Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2024.09.025
Omar Moustafa, Jacqueline Chow, Damian J Lee
Magnets have been used to help position dental components, including magnetic mounting plates for articulators and magnetic attachments for implant surgical guides. A magnetically coupled tooth arrangement technique used the fixed reference point of integrated implants to determine maxillomandibular relations and the tooth arrangement, thus improving the efficiency of the clinical appointment. The magnetic framework was screwed into the implants only once for the duration of a clinical appointment. The base was used to complete the tooth arrangement and determine the maxillomandibular jaw relationship.
{"title":"Magnetically coupled tooth arrangement for an implant-supported fixed complete denture: A dental technique.","authors":"Omar Moustafa, Jacqueline Chow, Damian J Lee","doi":"10.1016/j.prosdent.2024.09.025","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.025","url":null,"abstract":"<p><p>Magnets have been used to help position dental components, including magnetic mounting plates for articulators and magnetic attachments for implant surgical guides. A magnetically coupled tooth arrangement technique used the fixed reference point of integrated implants to determine maxillomandibular relations and the tooth arrangement, thus improving the efficiency of the clinical appointment. The magnetic framework was screwed into the implants only once for the duration of a clinical appointment. The base was used to complete the tooth arrangement and determine the maxillomandibular jaw relationship.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142564246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Studies on the movement of artificial teeth during the manufacturing of computer-aided design and computer-aided manufacturing (CAD-CAM) complete dentures using the custom disk method with milled recesses and on whether the movement is within a clinically acceptable range are lacking.
Purpose
The purpose of this in vitro study was to assess the trueness and precision of the artificial teeth on custom disks the recesses of which were manufactured using a milling machine and to compare the results with the recesses manufactured using a 3-dimensional (3D) printer.
Material and methods
Four types of artificial teeth (maxillary left central incisors [Max-L1], mandibular left central incisors [Man-L1], maxillary left first premolars [Max-L4], and maxillary left first molars [Max-L6]) were prepared. Milling data were created, and 3 of each type of tooth were attached to each disk made up of 3 concentric circles (large, medium, and small). Five each of the 3D printed custom disks and custom disks with milled recesses were milled based on the milling data. Standard tessellation language data were obtained through cone beam computed tomography and superimposed by using a CAD software program. Mean absolute error (MAE) values were calculated to assess trueness and precision; MAE values of artificial teeth in custom disks with milled recesses and 3D printed custom disks were statistically compared by using the 2-way analysis of variance test with 2 factors, 2 types of custom disks and 4 types of artificial teeth, and the Tukey post hoc comparison (α=.05).
Results
Regarding position trueness, the MAE value of Man-L1 on the milling custom disk was significantly lower than that of the 3D printed custom disk (P<.001), whereas the MAE values of Max-L4 and Max-L6 on the milling custom disk were significantly higher than those on the 3D printed custom disk (P<.001). No significant difference was found in the MAE value of the position trueness of Max-L1 between the milling and 3D printed custom disks. Regarding position precision, the MAE values of Max-L1, Man-L1, and Max-L4 on the milling custom disk were significantly lower than those on the 3D printed custom disks (P=.002, P<.001, P=.025, respectively). However, no significant difference was seen in the MAE value of position precision of Max-L6 between the milling and 3D printed custom disks (P=.180)
Conclusions
Movement of artificial teeth during the manufacture of dentures using the custom disk method and custom disks with milled recesses was within a clinically acceptable range.
目的：本体外研究的目的是评估使用铣床制造凹槽的定制盘上人工牙的真实度和精确度，并将结果与使用三维（3D）打印机制造的凹槽进行比较：制备了四种类型的人工牙齿（上颌左中切牙[Max-L1]、下颌左中切牙[Man-L1]、上颌左第一前臼齿[Max-L4]和上颌左第一臼齿[Max-L6]）。创建了铣削数据，并在由 3 个同心圆（大、中、小）组成的每个圆盘上安装了每种类型的 3 颗牙齿。根据铣削数据铣削了 3D 打印定制盘和带有铣削凹槽的定制盘各 5 个。通过锥形束计算机断层扫描获得了标准细分语言数据，并使用 CAD 软件程序进行了叠加。计算平均绝对误差（MAE）值以评估真实度和精确度；通过2个因子、2种定制盘和4种人造牙的2方差分析检验和Tukey事后比较（α=.05），对带有铣削凹槽的定制盘和3D打印定制盘中人造牙的MAE值进行统计比较：在位置真实度方面，铣制定制盘上 Man-L1 的 MAE 值明显低于 3D 打印定制盘（P＜0.05）。
{"title":"Trueness and precision of artificial teeth in CAD-CAM milled complete dentures from custom disks with a milled recess","authors":"Yumika Soeda DDS, PhD , Yuriko Komagamine DDS, PhD , Manabu Kanazawa DDS, PhD , Tamaki Hada RDT, PhD , Maiko Iwaki DDS, PhD , Shunsuke Minakuchi DDS, PhD","doi":"10.1016/j.prosdent.2022.08.037","DOIUrl":"10.1016/j.prosdent.2022.08.037","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Studies on the movement of artificial teeth during the manufacturing of computer-aided design and computer-aided manufacturing (CAD-CAM) complete dentures using the custom disk method with milled recesses and on whether the movement is within a clinically acceptable range are lacking.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to assess the trueness and precision of the artificial teeth on custom disks the recesses of which were manufactured using a milling machine and to compare the results with the recesses manufactured using a 3-dimensional (3D) printer.</div></div><div><h3>Material and methods</h3><div><span>Four types of artificial teeth (maxillary left central incisors [Max-L1], mandibular left central incisors [Man-L1], maxillary left </span>first premolars<span> [Max-L4], and maxillary left first molars<span><span> [Max-L6]) were prepared. Milling data were created, and 3 of each type of tooth were attached to each disk made up of 3 concentric circles (large, medium, and small). Five each of the 3D printed custom disks and custom disks with milled recesses were milled based on the milling data. Standard tessellation language data were obtained through cone beam computed tomography and superimposed by using a CAD software program. Mean absolute error (MAE) values were calculated to assess trueness and precision; MAE values of artificial teeth in custom disks with milled recesses and 3D printed custom disks were statistically compared by using the 2-way analysis of variance test with 2 factors, 2 types of custom disks and 4 types of artificial teeth, and the Tukey </span>post hoc comparison (α=.05).</span></span></div></div><div><h3>Results</h3><div>Regarding position trueness, the MAE value of Man-L1 on the milling custom disk was significantly lower than that of the 3D printed custom disk (<em>P</em><.001), whereas the MAE values of Max-L4 and Max-L6 on the milling custom disk were significantly higher than those on the 3D printed custom disk (<em>P</em><.001). No significant difference was found in the MAE value of the position trueness of Max-L1 between the milling and 3D printed custom disks. Regarding position precision, the MAE values of Max-L1, Man-L1, and Max-L4 on the milling custom disk were significantly lower than those on the 3D printed custom disks (<em>P</em>=.002, <em>P</em><.001, <em>P</em>=.025, respectively). However, no significant difference was seen in the MAE value of position precision of Max-L6 between the milling and 3D printed custom disks (<em>P</em>=.180)</div></div><div><h3>Conclusions</h3><div>Movement of artificial teeth during the manufacture of dentures using the custom disk method and custom disks with milled recesses was within a clinically acceptable range.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1014-1019"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40458032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2022.10.019
Mariana Balcewicz Pozza DDS , Alan Jony de Moura Costa DDS , Shaban Burgoa DDS , Dionir Ventura DT , Arthur Rodriguez Gonzalez Cortes DDS, PhD
Several protocols have been used with computer-aided design and computer-aided manufacture (CAD-CAM) prostheses after image-guided implant surgery based on a prosthetically driven surgical plan. For delayed approaches, a CAD-CAM custom healing abutment can be manufactured before the surgery and installed immediately after implant placement. However, information on the use of emergence profile segmentation on which to base the digital design and on the use of low-cost 3-dimensional printers to produce custom healing abutments are lacking. The purpose of this article was to present a fully digital workflow to digitally design and 3-dimensionally print custom healing abutments with a biocompatible light-polymerizing resin based on the natural emergence profile of the tooth to be replaced.
{"title":"Digital workflow for low-cost 3D printed custom healing abutment based on emergence profile CBCT segmentation","authors":"Mariana Balcewicz Pozza DDS , Alan Jony de Moura Costa DDS , Shaban Burgoa DDS , Dionir Ventura DT , Arthur Rodriguez Gonzalez Cortes DDS, PhD","doi":"10.1016/j.prosdent.2022.10.019","DOIUrl":"10.1016/j.prosdent.2022.10.019","url":null,"abstract":"<div><div>Several protocols have been used with computer-aided design and computer-aided manufacture (CAD-CAM) prostheses after image-guided implant surgery based on a prosthetically driven surgical plan. For delayed approaches, a CAD-CAM custom healing abutment can be manufactured before the surgery and installed immediately after implant placement. However, information on the use of emergence profile segmentation on which to base the digital design and on the use of low-cost 3-dimensional printers to produce custom healing abutments are lacking. The purpose of this article was to present a fully digital workflow to digitally design and 3-dimensionally print custom healing abutments with a biocompatible light-polymerizing resin based on the natural emergence profile of the tooth to be replaced.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 863-866"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10333213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2023.07.021
Sara Martakoush-Saleh DDS, MSc , Angel-Orión Salgado-Peralvo DDS, MSc, MPH, PhD , Juan-Francisco Peña-Cardelles DDS, MSc, PhD , Naresh Kewalramani DDS, MSc, MSc , German O. Gallucci DMD, PhD
Statement of problem
Because the use of zirconia in dentistry is relatively new, the number of published studies on the subject is scarce, even though material selection is an important factor in clinical performance. Therefore, a systematic assessment of the impact of the prosthetic material, framework design, veneering material, and manufacturing process is required.
Purpose
The purpose of this systematic review and meta-analysis was to investigate the survival and success rates of feldspathic porcelain veneered zirconia (VZir) in comparison with monolithic zirconia (MZir) complete arch implant-supported prostheses (CAISPs). A secondary objective was to assess the influence of the type of loading, the presence or absence of a cantilever, the type of zirconia used, the location, and the opposing arch on complications rates and patient satisfaction.
Material and methods
An electronic search of the MEDLINE database (via PubMed), Scopus, Science Direct, Cochrane Library, and OpenGrey was carried out. The criteria described in the preferred reporting items for systematic reviews and meta-analyses statement were used. The search was restricted from January 2000 to January 2022.
Results
The systematic search resulted in 20 articles that met the established criteria. In total, 751 patients (VZir=302; MZir=449) with 3038 CAISPs (VZir=368; MZir=2670) were analyzed. Higher prosthetic survival and success rates were found in MZir compared with VZir CAISPs (100% and 95.45%, respectively). The meta-analysis found significantly fewer complications related to MZir (9.4% [4.8%-14.1%]) compared with VZir (33.7% [17.5%-49.9%]).
Conclusions
Based on the findings of this systematic review, MZir CAISPs had higher survival and success rates than VZir CAISPs, with significantly fewer prosthetic complications. The influence of factors such as the type of functional loading, the presence of a cantilever, the material used in the prosthodontic workflow, the location of the CAISP, and the type of antagonist arch on the performance of Zir CAISPs remains unclear.
{"title":"Evaluating the clinical behavior of veneered zirconia in comparison with monolithic zirconia complete arch implant-supported prostheses: A systematic review and meta-analysis","authors":"Sara Martakoush-Saleh DDS, MSc , Angel-Orión Salgado-Peralvo DDS, MSc, MPH, PhD , Juan-Francisco Peña-Cardelles DDS, MSc, PhD , Naresh Kewalramani DDS, MSc, MSc , German O. Gallucci DMD, PhD","doi":"10.1016/j.prosdent.2023.07.021","DOIUrl":"10.1016/j.prosdent.2023.07.021","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Because the use of zirconia in dentistry is relatively new, the number of published studies on the subject is scarce, even though material selection is an important factor in clinical performance. Therefore, a systematic assessment of the impact of the prosthetic material, framework design, veneering material, and manufacturing process is required.</div></div><div><h3>Purpose</h3><div>The purpose of this systematic review and meta-analysis was to investigate the survival and success rates of feldspathic porcelain veneered zirconia (VZir) in comparison with monolithic zirconia (MZir) complete arch implant-supported prostheses (CAISPs). A secondary objective was to assess the influence of the type of loading, the presence or absence of a cantilever, the type of zirconia used, the location, and the opposing arch on complications rates and patient satisfaction.</div></div><div><h3>Material and methods</h3><div>An electronic search of the MEDLINE database (via PubMed), Scopus, Science Direct, Cochrane Library, and OpenGrey was carried out. The criteria described in the preferred reporting items for systematic reviews and meta-analyses statement were used. The search was restricted from January 2000 to January 2022.</div></div><div><h3>Results</h3><div>The systematic search resulted in 20 articles that met the established criteria. In total, 751 patients (VZir=302; MZir=449) with 3038 CAISPs (VZir=368; MZir=2670) were analyzed. Higher prosthetic survival and success rates were found in MZir compared with VZir CAISPs (100% and 95.45%, respectively). The meta-analysis found significantly fewer complications related to MZir (9.4% [4.8%-14.1%]) compared with VZir (33.7% [17.5%-49.9%]).</div></div><div><h3>Conclusions</h3><div>Based on the findings of this systematic review, MZir CAISPs had higher survival and success rates than VZir CAISPs, with significantly fewer prosthetic complications. The influence of factors such as the type of functional loading, the presence of a cantilever, the material used in the prosthodontic workflow, the location of the CAISP, and the type of antagonist arch on the performance of Zir CAISPs remains unclear.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 899-912"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10213403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2024.07.019
Ahmet Serkan Küçükekenci DDS, PhD , Mustafa Borga Dönmez DDS, PhD , Doğu Ömür Dede DDS, PhD , Gülce Çakmak DDS, PhD , Burak Yilmaz DDS, PhD
Statement of problem
Several additively and subtractively manufactured resin-based materials indicated for interim and definitive fixed dental prostheses have been launched. However, knowledge of the bond strength of these materials to different implant abutment materials is limited.
Purpose
The purpose of this in vitro study was to evaluate the shear bond strength (SBS) of additively and subtractively manufactured resin-based materials to different implant abutment materials.
Material and methods
One hundred and ten disk-shaped specimens (Ø3×3 mm) were fabricated either additively from 2 resins indicated for definitive use (Crowntec; AM_CT and VarseoSmile Crown Plus; AM_VS) and 1 resin indicated for interim use (FREEPRINT temp; AM_FP) or subtractively from a nanographene-reinforced polymethyl methacrylate (G-CAM; SM_GC) and a high-impact polymer composite (breCAM.HIPC; SM_BC). After allocating 2 specimens from each group for scanning electron microscope evaluation, the specimens were divided according to the abutment material (CopraPeek; polyetheretherketone, PEEK and Dentium Superline Pre-Milled Abutment; titanium, Ti) (n=10). All specimens were airborne-particle abraded with 50-µm aluminum oxide. After applying a resin primer (Visio.link) to PEEK and an adhesive primer (Clearfil Ceramic Primer Plus) to Ti specimens, a self-adhesive resin cement (PANAVIA SA Cement Universal) was used for cementation. All specimens were stored in distilled water (24 hours, 37 °C), and a universal testing device was used for the SBS test. SBS data were analyzed with 2-way analysis of variance and Tukey honestly significant difference tests, while the chi-squared test was used to evaluate the difference among the abutment-resin pairs in terms of failure modes (α=.05).
Results
The interaction between the material type and the abutment type and the main factor of material type affected the SBS (P<.001). SM_BC-PEEK and SM_GC had the lowest SBS followed by SM_BC-Ti, whereas AM_VS-PEEK had the highest SBS (P≤.001). AM_CT-Ti had higher SBS than AM_FP-PEEK (P=.026). SM_GC had the lowest and AM_VS had the highest SBS, while AM_CT and AM_FP had higher SBS than SM_BC (P≤.004). The distribution of failure modes was significantly different among tested material-abutment pairs, and only for AM_CT among tested materials (P≤.025). Most of the material-abutment pairs had a minimum of 80% adhesive failures.
Conclusions
Regardless of the abutment material, additively manufactured specimens had higher bond strength and one of the subtractively manufactured materials (SM_GC) mostly had lower bond strength. The abutment material had a small effect on the bond strength. Adhesive failures were observed most frequently.
问题陈述：目前已经推出了几种用于临时和最终固定义齿修复的加法和减法树脂基材料。目的：本体外研究旨在评估加法和减法生产的树脂基底材料与不同种植体基底材料的剪切粘结强度（SBS）：110 个圆盘状试样（Ø3×3 毫米）由 2 种用于最终用途的树脂（Crowntec；AM_CT 和 VarseoSmile Crown Plus；AM_VS）和 1 种用于临时用途的树脂（FREEPRINT temp；AM_FP）加成制成，或由纳米石墨烯增强聚甲基丙烯酸甲酯（G-CAM；SM_GC）和高抗冲聚合物复合材料（breCAM.HIPC；SM_BC）减量制成。从每组中分配 2 个标本进行扫描电子显微镜评估后，根据基台材料（CopraPeek；聚醚醚酮，PEEK 和 Dentium Superline Pre-Milled 基台；钛，Ti）将标本分开（n=10）。所有试样都用 50 微米的氧化铝进行了气载颗粒研磨。在给 PEEK 试样涂上树脂底漆（Visio.link）和给钛试样涂上粘接底漆（Clearfil Ceramic Primer Plus）后，使用自粘树脂粘接剂（PANAVIA SA Cement Universal）进行粘接。所有试样都储存在蒸馏水中（24 小时，37 °C），并使用通用测试装置进行 SBS 测试。SBS 数据采用双向方差分析和 Tukey 诚实显著性差异检验进行分析，而基台-树脂配对在破坏模式方面的差异则采用卡方检验进行评估（α=.05）：结果：材料类型与基台类型之间的交互作用以及材料类型这一主要因素对 SBS 的影响（PC 结论）：无论基台材料如何，加成法制造的试样具有较高的结合强度，而减成法制造的材料之一（SM_GC）大多具有较低的结合强度。基台材料对粘接强度的影响很小。粘接失效的情况最为常见。
{"title":"Bond strength of recently introduced computer-aided design and computer-aided manufacturing resin-based crown materials to polyetheretherketone and titanium","authors":"Ahmet Serkan Küçükekenci DDS, PhD , Mustafa Borga Dönmez DDS, PhD , Doğu Ömür Dede DDS, PhD , Gülce Çakmak DDS, PhD , Burak Yilmaz DDS, PhD","doi":"10.1016/j.prosdent.2024.07.019","DOIUrl":"10.1016/j.prosdent.2024.07.019","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Several additively and subtractively manufactured resin-based materials indicated for interim and definitive fixed dental prostheses have been launched. However, knowledge of the bond strength of these materials to different implant abutment materials is limited.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to evaluate the shear bond strength (SBS) of additively and subtractively manufactured resin-based materials to different implant abutment materials.</div></div><div><h3>Material and methods</h3><div>One hundred and ten disk-shaped specimens (Ø3×3 mm) were fabricated either additively from 2 resins indicated for definitive use (Crowntec; AM_CT and VarseoSmile Crown Plus; AM_VS) and 1 resin indicated for interim use (FREEPRINT temp; AM_FP) or subtractively from a nanographene-reinforced polymethyl methacrylate (G-CAM; SM_GC) and a high-impact polymer composite (breCAM.HIPC; SM_BC). After allocating 2 specimens from each group for scanning electron microscope evaluation, the specimens were divided according to the abutment material (CopraPeek; polyetheretherketone, PEEK and Dentium Superline Pre-Milled Abutment; titanium, Ti) (n=10). All specimens were airborne-particle abraded with 50-µm aluminum oxide. After applying a resin primer (Visio.link) to PEEK and an adhesive primer (Clearfil Ceramic Primer Plus) to Ti specimens, a self-adhesive resin cement (PANAVIA SA Cement Universal) was used for cementation. All specimens were stored in distilled water (24 hours, 37 °C), and a universal testing device was used for the SBS test. SBS data were analyzed with 2-way analysis of variance and Tukey honestly significant difference tests, while the chi-squared test was used to evaluate the difference among the abutment-resin pairs in terms of failure modes (α=.05).</div></div><div><h3>Results</h3><div>The interaction between the material type and the abutment type and the main factor of material type affected the SBS (<em>P</em><.001). SM_BC-PEEK and SM_GC had the lowest SBS followed by SM_BC-Ti, whereas AM_VS-PEEK had the highest SBS (<em>P</em>≤.001). AM_CT-Ti had higher SBS than AM_FP-PEEK (<em>P</em>=.026). SM_GC had the lowest and AM_VS had the highest SBS, while AM_CT and AM_FP had higher SBS than SM_BC (<em>P</em>≤.004). The distribution of failure modes was significantly different among tested material-abutment pairs, and only for AM_CT among tested materials (<em>P</em>≤.025). Most of the material-abutment pairs had a minimum of 80% adhesive failures.</div></div><div><h3>Conclusions</h3><div>Regardless of the abutment material, additively manufactured specimens had higher bond strength and one of the subtractively manufactured materials (SM_GC) mostly had lower bond strength. The abutment material had a small effect on the bond strength. Adhesive failures were observed most frequently.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1066.e1-1066.e8"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141878930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2023.01.028
Jason D. Lee DDS, MMSc , Dianne Luu DMD , Tae Won Yoon BA , Sang J. Lee DMD, MMSc
Statement of problem
Alternatives to the bilateral interocclusal registration scanning technique to improve virtual articulation have not been fully investigated.
Purpose
The purpose of this in vitro study was to compare the accuracy of virtually articulating digital casts by using bilateral interocclusal registration scans versus a complete arch interocclusal scan.
Material and methods
A set of maxillary and mandibular reference casts were hand-articulated and mounted on an articulator. The mounted reference casts were scanned, and the maxillomandibular relationship record was scanned 15 times using 2 different scanning techniques, the bilateral interocclusal registration scan (BIRS) and complete arch interocclusal registration scan (CIRS), with an intraoral scanner. The generated files were transferred to a virtual articulator, and each set of scanned casts was articulated using BIRS and CIRS. The virtually articulated casts were saved as a set and transferred to a 3-dimensional (3D) analysis program. The scanned casts were set in the same coordinate system as the reference cast and overlaid on top of the reference cast for analysis. Two anterior and 2 posterior points were selected to determine points of comparison between the reference cast and test casts virtually articulated with BIRS and CIRS. The mean discrepancy between the 2 test groups and the anterior and posterior mean discrepancy within each group were tested for significance by using the Mann-Whitney U test (α=.05).
Results
A significant difference was found between the virtual articulation accuracy of BIRS and CIRS (P<.001). The mean deviation for BIRS was 0.053 ±0.051 mm and that for CIRS was 0.265 ±0.241 mm. Furthermore, significant differences were found between the anterior and posterior deviations in both BIRS (P=.020) and CIRS (P<.001). The mean deviation for BIRS was 0.034 ±0.026 mm in the anterior and 0.073 ±0.062 mm in the posterior. The mean deviation for CIRS was 0.146 ±0.108 mm anteriorly and 0.385 ±0.277 mm posteriorly.
Conclusions
BIRS was more accurate than CIRS for virtual articulation. Moreover, the alignment accuracy of anterior and posterior sites for both BIRS and CIRS exhibited significant differences, with the anterior alignment exhibiting better accuracy in relation to the reference cast.
{"title":"Accuracy comparison of bilateral versus complete arch interocclusal registration scans for virtual articulation","authors":"Jason D. Lee DDS, MMSc , Dianne Luu DMD , Tae Won Yoon BA , Sang J. Lee DMD, MMSc","doi":"10.1016/j.prosdent.2023.01.028","DOIUrl":"10.1016/j.prosdent.2023.01.028","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Alternatives to the bilateral interocclusal registration scanning technique to improve virtual articulation have not been fully investigated.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to compare the accuracy of virtually articulating digital casts by using bilateral interocclusal registration scans versus a complete arch interocclusal scan.</div></div><div><h3>Material and methods</h3><div>A set of maxillary and mandibular reference casts were hand-articulated and mounted on an articulator<span>. The mounted reference casts were scanned, and the maxillomandibular relationship record was scanned 15 times using 2 different scanning techniques, the bilateral interocclusal registration scan (BIRS) and complete arch interocclusal registration scan (CIRS), with an intraoral scanner. The generated files were transferred to a virtual articulator, and each set of scanned casts was articulated using BIRS and CIRS. The virtually articulated casts were saved as a set and transferred to a 3-dimensional (3D) analysis program. The scanned casts were set in the same coordinate system as the reference cast and overlaid on top of the reference cast for analysis. Two anterior and 2 posterior points were selected to determine points of comparison between the reference cast and test casts virtually articulated with BIRS and CIRS. The mean discrepancy between the 2 test groups and the anterior and posterior mean discrepancy within each group were tested for significance by using the Mann-Whitney U test (α=.05).</span></div></div><div><h3>Results</h3><div>A significant difference was found between the virtual articulation accuracy of BIRS and CIRS (<em>P</em><.001). The mean deviation for BIRS was 0.053 ±0.051 mm and that for CIRS was 0.265 ±0.241 mm. Furthermore, significant differences were found between the anterior and posterior deviations in both BIRS (<em>P</em>=.020) and CIRS (<em>P</em><.001). The mean deviation for BIRS was 0.034 ±0.026 mm in the anterior and 0.073 ±0.062 mm in the posterior. The mean deviation for CIRS was 0.146 ±0.108 mm anteriorly and 0.385 ±0.277 mm posteriorly.</div></div><div><h3>Conclusions</h3><div>BIRS was more accurate than CIRS for virtual articulation. Moreover, the alignment accuracy of anterior and posterior sites for both BIRS and CIRS exhibited significant differences, with the anterior alignment exhibiting better accuracy in relation to the reference cast.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1038-1043"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10816822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2023.01.025
Heather Button MEd , John C. Kois DMD, MSD , Abdul B. Barmak MD, MSc, EdD , Jonathan M. Zeitler , Vygandas Rutkunas DDS, PhD , Marta Revilla-León DDS, MSD, PhD
<div><h3>Statement of problem</h3><div><span>The accuracy of intraoral scanners (IOSs) can be affected by operator handling; however, the scanning area and accuracy discrepancies acquired at different scanning distances and </span>angulations among IOSs remain uncertain.</div></div><div><h3>Purpose</h3><div>The objective of this in vitro study was to compare the scanning area and scanning accuracy of the intraoral digital scans obtained at 3 scanning distances with 4 different scanning angulations among 4 different IOSs.</div></div><div><h3>Material and methods</h3><div>A reference device (reference file) was designed with 4 inclinations (0, 15, 30, and 45 degrees) and printed. Four groups were created based on the IOS: i700, TRIOS4, CS 3800, and iTero scanners. Four subgroups were generated depending on the scanning angulation (0, 15, 30, and 45 degrees). Each subgroup was divided into 3 subgroups based on the scanning distance: 0, 2, and 4 mm (N=720, n=15). The reference devices were positioned in a z-axis calibrated platform for standardizing the scanning distance. In the i700-0-0 subgroup, the 0-degree reference device was positioned in the calibrated platform. The wand of the IOS was positioned in a supporting framework with a 0-mm scanning distance, and the scans were acquired. In the i700-0-2 subgroup, the platform was lowered for a 2-mm scanning distance followed by the specimen acquisition. In the i700-0-4 subgroup, the platform was further lowered for a 4-mm scanning distance, and the scans were obtained. For the i700-15, i700-30, and i700-45 subgroups, the same procedures were carried out as in the i700-0 subgroups respectively, but with the 10-, 15-, 30-, or 45-degree reference device. Similarly, the same procedures were completed for all the groups with the corresponding IOS. The area of each scan was measured. The reference file was used to measure the discrepancy with the experimental scans by using the root mean square (RMS) error. Three-way ANOVA and post hoc Tukey pairwise comparison tests were used to analyze the scanning area data. Kruskal–Wallis and multiple pairwise comparison tests were used to analyze the RMS data (α=.05).</div></div><div><h3>Results</h3><div>IOS (<em>P</em><.001), scanning distance (<em>P</em><.001), and scanning angle (<em>P</em><.001) were significant factors of the scanning area measured among the subgroups tested. A significant group×subgroup interaction was found (<em>P</em><.001). The iTero and the TRIOS4 groups obtained higher scanning area mean values than the i700 and CS 3800 groups. The CS 3800 obtained the lowest scanning area among the IOS groups tested. The 0-mm subgroups obtained a significantly lower scanning area than the 2- and 4-mm subgroups (<em>P</em><.001). The 0- and 30-degree subgroups obtained a significantly lower scanning area than the 15- and 45-degree subgroups (<em>P</em><.001). The Kruskal–Wallis test revealed significant median RMS discrepancies (<em>P</em>
{"title":"Scanning accuracy and scanning area discrepancies of intraoral digital scans acquired at varying scanning distances and angulations among 4 different intraoral scanners","authors":"Heather Button MEd , John C. Kois DMD, MSD , Abdul B. Barmak MD, MSc, EdD , Jonathan M. Zeitler , Vygandas Rutkunas DDS, PhD , Marta Revilla-León DDS, MSD, PhD","doi":"10.1016/j.prosdent.2023.01.025","DOIUrl":"10.1016/j.prosdent.2023.01.025","url":null,"abstract":"<div><h3>Statement of problem</h3><div><span>The accuracy of intraoral scanners (IOSs) can be affected by operator handling; however, the scanning area and accuracy discrepancies acquired at different scanning distances and </span>angulations among IOSs remain uncertain.</div></div><div><h3>Purpose</h3><div>The objective of this in vitro study was to compare the scanning area and scanning accuracy of the intraoral digital scans obtained at 3 scanning distances with 4 different scanning angulations among 4 different IOSs.</div></div><div><h3>Material and methods</h3><div>A reference device (reference file) was designed with 4 inclinations (0, 15, 30, and 45 degrees) and printed. Four groups were created based on the IOS: i700, TRIOS4, CS 3800, and iTero scanners. Four subgroups were generated depending on the scanning angulation (0, 15, 30, and 45 degrees). Each subgroup was divided into 3 subgroups based on the scanning distance: 0, 2, and 4 mm (N=720, n=15). The reference devices were positioned in a z-axis calibrated platform for standardizing the scanning distance. In the i700-0-0 subgroup, the 0-degree reference device was positioned in the calibrated platform. The wand of the IOS was positioned in a supporting framework with a 0-mm scanning distance, and the scans were acquired. In the i700-0-2 subgroup, the platform was lowered for a 2-mm scanning distance followed by the specimen acquisition. In the i700-0-4 subgroup, the platform was further lowered for a 4-mm scanning distance, and the scans were obtained. For the i700-15, i700-30, and i700-45 subgroups, the same procedures were carried out as in the i700-0 subgroups respectively, but with the 10-, 15-, 30-, or 45-degree reference device. Similarly, the same procedures were completed for all the groups with the corresponding IOS. The area of each scan was measured. The reference file was used to measure the discrepancy with the experimental scans by using the root mean square (RMS) error. Three-way ANOVA and post hoc Tukey pairwise comparison tests were used to analyze the scanning area data. Kruskal–Wallis and multiple pairwise comparison tests were used to analyze the RMS data (α=.05).</div></div><div><h3>Results</h3><div>IOS (<em>P</em><.001), scanning distance (<em>P</em><.001), and scanning angle (<em>P</em><.001) were significant factors of the scanning area measured among the subgroups tested. A significant group×subgroup interaction was found (<em>P</em><.001). The iTero and the TRIOS4 groups obtained higher scanning area mean values than the i700 and CS 3800 groups. The CS 3800 obtained the lowest scanning area among the IOS groups tested. The 0-mm subgroups obtained a significantly lower scanning area than the 2- and 4-mm subgroups (<em>P</em><.001). The 0- and 30-degree subgroups obtained a significantly lower scanning area than the 15- and 45-degree subgroups (<em>P</em><.001). The Kruskal–Wallis test revealed significant median RMS discrepancies (<em>P</em>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1044-1060"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10837816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2024.03.033
Peter Evans FIMPT, ANSHCS , Lawrence Dovgalski BSc (Hons) PGDip , Steven Hollisey-McLean PGDip , Lisa Farquhar MSc, BA joint (Hons), CertMRCSLT , Helen Extence BSc (Hons), CertMRCSLT
Nasal obturation using a removable medical device is a suitable treatment option for patients with velopharyngeal dysfunction. In the United Kingdom in recent years, the use of nasal obturation has increased because of the successful collaborations among the Speech and Language Therapy, Restorative Dentistry, and Maxillofacial departments. However, fabrication of the devices requires specialist skill and considerable time. A digital process which facilitates the rapid, cost effective production of a light, comfortable, unobtrusive nasal obturator is described.
{"title":"Custom nasal obturator for velopharyngeal dysfunction: Digitizing the fabrication process","authors":"Peter Evans FIMPT, ANSHCS , Lawrence Dovgalski BSc (Hons) PGDip , Steven Hollisey-McLean PGDip , Lisa Farquhar MSc, BA joint (Hons), CertMRCSLT , Helen Extence BSc (Hons), CertMRCSLT","doi":"10.1016/j.prosdent.2024.03.033","DOIUrl":"10.1016/j.prosdent.2024.03.033","url":null,"abstract":"<div><div>Nasal obturation using a removable medical device<span> is a suitable treatment option for patients with velopharyngeal dysfunction<span>. In the United Kingdom in recent years, the use of nasal obturation has increased because of the successful collaborations among the Speech and Language Therapy<span>, Restorative Dentistry, and Maxillofacial departments. However, fabrication of the devices requires specialist skill and considerable time. A digital process which facilitates the rapid, cost effective production of a light, comfortable, unobtrusive nasal obturator is described.</span></span></span></div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1075.e1-1075.e4"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140784203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The relationship of awake bruxism with pain is still unclear.
Purpose
The purpose of this clinical study was to evaluate awake bruxism behavior for 1 week in healthy young adults with ecological momentary assessment, assess its relationship with masticatory muscle tenderness, and the participation of endogenous analgesia.
Material and methods
A total of 150 healthy participants were provided with a smartphone application that sent 10 alerts at random intervals every day. The participants were instructed to report in real time which of the following awake bruxism behaviors best represented their current condition: relaxed jaw muscles, tooth contact, tooth clenching, tooth grinding, or jaw bracing. At baseline, participants underwent recordings of the pressure pain threshold and conditioned pain modulation of the masticatory muscles. Pressure pain threshold recording was also repeated on the last day of the study. A t test was used to compare the first and the last pressure pain threshold recording after 1 week with an ecological momentary assessment evaluation. The Pearson correlation test was performed to evaluate the correlation between variables (α=.05).
Results
Overall compliance was 75.9%. The average frequency of relaxed jaw muscles was 54.5%, tooth contact 29.4%, jaw bracing 5.8%, tooth clenching 9.7%, and tooth grinding 0.6%. The average frequency of a distinct awake bruxism behavior was 45.5%. A statistically significant increase in pressure pain threshold values was found (P=.001; P=.001; P=.045 for right and left anterior temporalis and left masseter, respectively). No significant correlation was found between the frequency of awake bruxism behaviors, the pressure pain threshold, and conditioned pain modulation (P>.05).
Conclusions
The most prevalent behavior was tooth contact (29.4%). No relationship was found between awake bruxism behaviors and masticatory muscle tenderness or endogenous analgesia.
{"title":"Real time evaluation of awake bruxism behaviors in young asymptomatic students and its impact on the masticatory muscles","authors":"Dyanne Medina Flores DDS, MSc , Maria Isabel Barragán Nuñez DDS, MSc , Henrique Müller de Quevedo DDS, MSc, PhD , Leonardo Rigoldi Bonjardim DDS, MSc, PhD , Paulo César Rodrigues Conti DDS, PhD","doi":"10.1016/j.prosdent.2023.03.009","DOIUrl":"10.1016/j.prosdent.2023.03.009","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The relationship of awake bruxism with pain is still unclear.</div></div><div><h3>Purpose</h3><div><span>The purpose of this clinical study was to evaluate awake bruxism behavior for 1 week in healthy young adults with ecological momentary assessment, assess its relationship with </span>masticatory muscle tenderness, and the participation of endogenous analgesia.</div></div><div><h3>Material and methods</h3><div><span>A total of 150 healthy participants were provided with a smartphone application that sent 10 alerts at random intervals every day. The participants were instructed to report in real time which of the following awake bruxism behaviors best represented their current condition: relaxed jaw muscles, tooth contact, tooth clenching<span>, tooth grinding, or jaw bracing. At baseline, participants underwent recordings of the pressure pain threshold<span> and conditioned pain modulation of the masticatory muscles. Pressure pain threshold recording was also repeated on the last day of the study. A </span></span></span><em>t</em> test was used to compare the first and the last pressure pain threshold recording after 1 week with an ecological momentary assessment evaluation. The Pearson correlation test was performed to evaluate the correlation between variables (α=.05).</div></div><div><h3>Results</h3><div>Overall compliance was 75.9%. The average frequency of relaxed jaw muscles was 54.5%, tooth contact 29.4%, jaw bracing 5.8%, tooth clenching 9.7%, and tooth grinding 0.6%. The average frequency of a distinct awake bruxism behavior was 45.5%. A statistically significant increase in pressure pain threshold values was found (<em>P</em>=.001; <em>P</em>=.001; <em>P</em>=.045 for right and left anterior temporalis and left masseter, respectively). No significant correlation was found between the frequency of awake bruxism behaviors, the pressure pain threshold, and conditioned pain modulation (<em>P</em>>.05).</div></div><div><h3>Conclusions</h3><div>The most prevalent behavior was tooth contact (29.4%). No relationship was found between awake bruxism behaviors and masticatory muscle tenderness or endogenous analgesia.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 982.e1-982.e7"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9318995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.prosdent.2023.04.003
Mustafa Borga Donmez DDS, PhD , Gülce Çakmak DDS, PhD , Deniz Yılmaz DDS, PhD , Martin Schimmel Prof Dr Med Dent, PD, MAS , Samir Abou-Ayash Prof Dr Med Dent , Burak Yilmaz DDS, PhD , Anne Peutzfeldt DDS, PhD, DrOdont
<div><h3>Statement of problem</h3><div>Additively manufactured composite resins for definitive restorations have been recently introduced. The bond strength between these composite resins and different substrates has not been extensively studied.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to measure the shear bond strength (SBS) between additively manufactured composite resins and dentin and titanium substrates and compare those with the SBS between subtractively manufactured polymer-infiltrated ceramic and the same substrates (dentin and titanium), when different dual-polymerizing resin cements were used.</div></div><div><h3>Material and methods</h3><div>One hundred and eighty cylinder-shaped specimens (Ø5×5 mm) were prepared from 3 materials recommended for definitive restorations: an additively manufactured composite resin (Crowntec [CT]); an additively manufactured hybrid composite resin (VarseoSmile Crown Plus [VS]); and a subtractively manufactured polymer-infiltrated ceramic (Enamic [EN]) (n=60). Specimens were randomly divided into six subgroups to be cemented to the two substrates (dentin and titanium; n=30) with 1 of 3 resin cements (RelyX Universal, Panavia V5, and Variolink Esthetic DC) (n=10). The restoration surface to be bonded was treated according to the respective manufacturer’s recommendations. Dentin surfaces were treated according to the resin cement (Scotchbond Universal Plus Adhesive for RelyX Universal, Panavia V5 Tooth Primer for Panavia V5, and Adhese Universal for Variolink Esthetic DC), while titanium surfaces were airborne-particle abraded, and only the specimens paired with Panavia V5 were treated with a ceramic primer (Clearfil Ceramic Primer Plus). SBS was measured in a universal testing machine at a crosshead speed of 1 mm/min. Failure modes were analyzed under a microscope at ×12 magnification. Data were analyzed by using 2-way analysis of variance and Tukey honestly significant difference tests (α=.05).</div></div><div><h3>Results</h3><div>When SBS to dentin was considered, only restorative material, as a main factor, had a significant effect (<em>P</em><.001); EN had the highest SBS (<em>P</em><.001), while the difference in SBS values of CT and VS was not significant (<em>P</em>=.145). As for SBS to titanium, the factors restorative material and resin cement and their interaction had a significant effect (<em>P</em><.001). Within each resin cement, EN had the highest SBS to titanium (<em>P</em><.001), and within each restorative material, Variolink resulted in the lowest SBS (<em>P</em>≤.010). Overall, EN and RelyX were associated with the highest SBS to titanium (<em>P</em>≤.013). Mixed failures were predominant in most groups.</div></div><div><h3>Conclusions</h3><div>Regardless of the substrate or the resin cement used, the subtractively manufactured polymer-infiltrated ceramic had higher shear bond strength than the additively manufactured composite resins. The S
问题陈述：用于最终修复体的添加型复合树脂是最近才出现的。目的：本体外研究的目的是测量加成法生产的复合树脂与牙本质和钛基底之间的剪切粘结强度（SBS），并将其与减法生产的聚合物浸润陶瓷与相同基底（牙本质和钛）之间的SBS（当使用不同的双聚合树脂水门汀时）进行比较：用三种建议用于最终修复体的材料制备了 180 个圆柱形试样（Ø5×5 毫米）：添加型复合树脂（Crowntec [CT]）、添加型混合复合树脂（VarseoSmile Crown Plus [VS]）和减量型聚合物浸润陶瓷（Enamic [EN]）（n=60）。试样被随机分成 6 个亚组，分别用 3 种树脂粘结剂（RelyX Universal、Panavia V5 和 Variolink Esthetic DC）中的一种粘结在两种基底（牙本质和钛，n=30）上（n=10）。待粘接的修复体表面按照各生产商的建议进行处理。牙本质表面根据树脂粘接剂进行处理（RelyX Universal 使用 Scotchbond Universal Plus 粘接剂，Panavia V5 使用 Panavia V5 牙体底漆，Variolink Esthetic DC 使用 Adhese Universal），而钛表面则进行空气颗粒磨削，只有与 Panavia V5 配对的试样才使用陶瓷底漆（Clearfil Ceramic Primer Plus）进行处理。SBS 在万能试验机中以 1 毫米/分钟的十字头速度进行测量。在放大到 ×12 倍的显微镜下分析失效模式。数据分析采用双向方差分析和 Tukey 诚实显著性差异检验（α=.05）：结果：当考虑对牙本质的 SBS 时，只有作为主要因素的修复材料有显著影响（PConclusions）：无论使用何种基底或树脂粘结剂，减法生产的聚合物浸润陶瓷的剪切粘结强度都高于加法生产的复合树脂。无论是与牙本质还是钛粘接，加成法制造的复合树脂的 SBS 都没有显著差异。无论使用哪种修复材料，Variolink DC 对钛表面的 SBS 都是最低的。
{"title":"Bond strength of additively manufactured composite resins to dentin and titanium when bonded with dual-polymerizing resin cements","authors":"Mustafa Borga Donmez DDS, PhD , Gülce Çakmak DDS, PhD , Deniz Yılmaz DDS, PhD , Martin Schimmel Prof Dr Med Dent, PD, MAS , Samir Abou-Ayash Prof Dr Med Dent , Burak Yilmaz DDS, PhD , Anne Peutzfeldt DDS, PhD, DrOdont","doi":"10.1016/j.prosdent.2023.04.003","DOIUrl":"10.1016/j.prosdent.2023.04.003","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Additively manufactured composite resins for definitive restorations have been recently introduced. The bond strength between these composite resins and different substrates has not been extensively studied.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to measure the shear bond strength (SBS) between additively manufactured composite resins and dentin and titanium substrates and compare those with the SBS between subtractively manufactured polymer-infiltrated ceramic and the same substrates (dentin and titanium), when different dual-polymerizing resin cements were used.</div></div><div><h3>Material and methods</h3><div>One hundred and eighty cylinder-shaped specimens (Ø5×5 mm) were prepared from 3 materials recommended for definitive restorations: an additively manufactured composite resin (Crowntec [CT]); an additively manufactured hybrid composite resin (VarseoSmile Crown Plus [VS]); and a subtractively manufactured polymer-infiltrated ceramic (Enamic [EN]) (n=60). Specimens were randomly divided into six subgroups to be cemented to the two substrates (dentin and titanium; n=30) with 1 of 3 resin cements (RelyX Universal, Panavia V5, and Variolink Esthetic DC) (n=10). The restoration surface to be bonded was treated according to the respective manufacturer’s recommendations. Dentin surfaces were treated according to the resin cement (Scotchbond Universal Plus Adhesive for RelyX Universal, Panavia V5 Tooth Primer for Panavia V5, and Adhese Universal for Variolink Esthetic DC), while titanium surfaces were airborne-particle abraded, and only the specimens paired with Panavia V5 were treated with a ceramic primer (Clearfil Ceramic Primer Plus). SBS was measured in a universal testing machine at a crosshead speed of 1 mm/min. Failure modes were analyzed under a microscope at ×12 magnification. Data were analyzed by using 2-way analysis of variance and Tukey honestly significant difference tests (α=.05).</div></div><div><h3>Results</h3><div>When SBS to dentin was considered, only restorative material, as a main factor, had a significant effect (<em>P</em><.001); EN had the highest SBS (<em>P</em><.001), while the difference in SBS values of CT and VS was not significant (<em>P</em>=.145). As for SBS to titanium, the factors restorative material and resin cement and their interaction had a significant effect (<em>P</em><.001). Within each resin cement, EN had the highest SBS to titanium (<em>P</em><.001), and within each restorative material, Variolink resulted in the lowest SBS (<em>P</em>≤.010). Overall, EN and RelyX were associated with the highest SBS to titanium (<em>P</em>≤.013). Mixed failures were predominant in most groups.</div></div><div><h3>Conclusions</h3><div>Regardless of the substrate or the resin cement used, the subtractively manufactured polymer-infiltrated ceramic had higher shear bond strength than the additively manufactured composite resins. The S","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1067.e1-1067.e8"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9816428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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