Journal of Prosthetic Dentistry最新文献

{"title":"Complete mouth rehabilitation in a patient with condylar fracture malunion: A clinical report","authors":"Sang-Ah Lee DDS, MSD ,&nbsp;Chan-Ho Park DDS, MSD ,&nbsp;Kyung-Ho Ko DDS, MSD, PhD ,&nbsp;Chan-Jin Park DDS, MSD, PhD ,&nbsp;Lee-Ra Cho DDS, MSD, PhD","doi":"10.1016/j.prosdent.2023.12.023","DOIUrl":"10.1016/j.prosdent.2023.12.023","url":null,"abstract":"<div><div><span><span><span>Mandibular condyle fracture malunion and </span>tooth loss can cause functional and esthetic problems. A patient with restricted mouth opening associated with </span>muscle atrophy<span> required prosthetic rehabilitation. Since the remaining teeth had a poor prognosis and the patient had difficulty adapting to the interim denture, complete mouth rehabilitation with implants was chosen. The implants were placed by using nerve lateralization and an autogenous </span></span>bone graft<span>. Prosthetic rehabilitation combines digital diagnosis and conventional prosthetic restorations. The definitive prosthesis was fabricated to ensure adequate oral hygiene and functional adaptation of the orofacial structures. Treatment resulted in stable masticatory function, occlusion, and esthetics and restored the function of the atrophied lips and restricted mouth opening.</span></div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 849.e1-849.e6"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140039619","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}

{"title":"Bibliometric assessment in implant-retained overdenture articles: Mapping citation and journal impact factor trends","authors":"Guilherme Almeida Borges DDS, MSc ,&nbsp;Caroline Dini DDS, MSc ,&nbsp;Mariana Marinho Davino de Medeiros DDS, MSc ,&nbsp;Renata Cunha Matheus Rodrigues Garcia DDS, MSc, PhD ,&nbsp;Valentim Adelino Ricardo Barão DDS, MSc, PhD ,&nbsp;Marcelo Ferraz Mesquita DDS, MSc, PhD","doi":"10.1016/j.prosdent.2022.11.002","DOIUrl":"10.1016/j.prosdent.2022.11.002","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Implant-retained overdentures are a recognized treatment option. However, a comprehensive assessment of all articles on implant-retained overdentures to identify publication standards such as mean citation and the Journal Citation Reports (JCR) impact factor is lacking.</div></div><div><h3>Purpose</h3><div>The purpose of this bibliometric assessment was to evaluate the association of mean citation and JCR impact factor with bibliometric parameters in articles on implant-retained overdentures.</div></div><div><h3>Material and methods</h3><div>Articles reporting randomized controlled clinical trials<span><span> (RCTs) and nonrandomized controlled clinical trials (N-RCTs); case reports and series; retrospective studies; and in silico, in vitro, or </span>systematic reviews in 6 databases were included. Data were extracted, and 2 multiple Poisson regressions analyses were applied (α=.05). The dependent variables were mean citation and JCR impact factor, which were evaluated to identify their association with bibliometric parameters by using prevalence ratio (PR) values.</span></div></div><div><h3>Results</h3><div>A total of 1369 articles published from 1986 to 2021 were included. The data revealed a high mean citation and high JCR impact factor for RCT, N-RCT, retrospective, and in vitro studies (<em>P</em>&lt;.05). In silico studies presented a high mean citation (<em>P</em>&lt;.001). Senior researchers with a high h-index were more likely to have a high mean citation and publications with a high JCR impact factor (<em>P</em>&lt;.001). Also, senior authors associated with an international network were more likely to have a high mean citation (<em>P</em>=.001). High-income countries had more studies with a high mean citation and JCR impact factor (<em>P</em><span>&lt;.05). Higher JCR impact factors were associated with articles evaluating only the maxilla<span> or mandible (</span></span><em>P</em>&lt;.05). The topics “implant setting” and “macrodesign” were associated with a high mean citation (<em>P</em>&lt;.05).</div></div><div><h3>Conclusions</h3><div>The publication trends suggest a high mean citation and a high JCR impact factor for clinical designs (RCT, N-RCT, retrospective) and in vitro studies. The same pattern was also displayed for researchers with a high h-index and located in high-income countries.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 921.e1-921.e9"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10407172","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}

{"title":"Surface roughness, wear, and abrasiveness of printed and milled occlusal veneers after thermomechanical aging","authors":"Noha Morsy DDS, MSD, PhD ,&nbsp;Mohammed El Kateb DDS, MSD, PhD ,&nbsp;Mona Mohamed Ghoneim DDS, MSD, PhD ,&nbsp;Ahmed A. Holiel DDS, MSD, PhD","doi":"10.1016/j.prosdent.2024.07.012","DOIUrl":"10.1016/j.prosdent.2024.07.012","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;Occlusal veneers are a conservative method of reestablishing vertical dimensions of occlusion (VDO) for worn teeth. A restorative material used for occlusal veneers should have a smooth surface, adequate wear resistance, and low abrasiveness to the antagonists, as total wear of occlusal veneers and their antagonists determines the stability of the reestablished VDO. Studies on roughness, wear, and abrasiveness of occlusal veneers are scarce.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this in vitro study was to assess the surface roughness, wear, and abrasiveness of printed and milled occlusal veneers after thermomechanical aging against natural cusps and restorative materials.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;Forty-eight extracted mandibular first molars were prepared for occlusal veneers and scanned with an intraoral scanner. The scans were exported to a computer-aided design program to design the occlusal veneers in 3 groups (n=16) according to the restorative material: group IP: milled lithium disilicate; group EN: milled hybrid ceramic (Vita Enamic), group VA: printed hybrid ceramic (Varseosmile Crown plus). The occlusal veneers in each group were bonded to their corresponding abutments and subjected to 250 000 mechanical cycles and a simultaneous 1000 thermal cycles in a mastication simulator. During thermomechanical aging, half of the specimens of each study group (n=8) were opposed by natural cusps (antagonist C) and the other half by antagonist cusps fabricated from the same restorative material as the occlusal veneers (antagonist R). The wear of the occlusal veneers and their antagonists was assessed with a 3-dimensional processing software program. The surface roughness of the veneers was assessed with a contact profilometer. The results were statistically analyzed with a 2-way ANOVA followed by the post hoc Tukey HSD test (α=.05).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;The 2-way ANOVA indicated a significant effect for the material and the antagonist on surface roughness, wear, and abrasiveness (&lt;em&gt;P&lt;/em&gt;&lt;.05). When opposed by antagonist C, VA showed significantly higher surface roughness than IP and EN (&lt;em&gt;P&lt;/em&gt;&lt;.001). VA had significantly higher surface wear followed by EN and IP (&lt;em&gt;P&lt;/em&gt;&lt;.001). IP caused significantly higher wear to antagonist C than EN and VA (&lt;em&gt;P&lt;/em&gt;&lt;.001). In addition, IP had significantly higher total wear (combined wear of veneers and their antagonists) followed by VA and EN (&lt;em&gt;P&lt;/em&gt;&lt;.001). When opposed by antagonist R, no significant difference was found among the 3 materials for surface roughness (&lt;em&gt;P&lt;/em&gt;=.08), material wear (&lt;em&gt;P&lt;/em&gt;=.12), opposing wear (&lt;em&gt;P&lt;/em&gt;=.11), or total wear (&lt;em&gt;P&lt;/em&gt;=.11).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;Both material and antagonist had a significant effect on surface roughness and occlusal stability when occlusal veneers were fabricated to restore VDO. VA had significantly mo","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 984.e1-984.e7"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141878932","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}

{"title":"Monolithic zirconia as a valid alternative to metal-ceramic for implant-supported single crowns in the posterior region: A systematic review and meta-analysis of randomized controlled trials","authors":"Péter Tajti DMD ,&nbsp;Eleonora Solyom DMD ,&nbsp;László Márk Czumbel DMD ,&nbsp;Bence Szabó MSc ,&nbsp;Réka Fazekas DMD, PhD ,&nbsp;Orsolya Németh DMD, MDSc, PhD ,&nbsp;Péter Hermann DMD, MSc, PhD ,&nbsp;Gábor Gerber DMD, PhD ,&nbsp;Péter Hegyi MD, PhD ,&nbsp;Krisztina Mikulás DMD, PhD","doi":"10.1016/j.prosdent.2023.05.006","DOIUrl":"10.1016/j.prosdent.2023.05.006","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Technical complication rates of standard metal-ceramic implant-supported posterior restorations are relatively high. Whether monolithic zirconia crowns represent a more successful alternative is unclear.</div></div><div><h3>Purpose</h3><div>The purpose of this systematic review and meta-analysis was to compare the clinical outcomes of posterior monolithic zirconia and metal-ceramic implant-supported single crowns.</div></div><div><h3>Material and methods</h3><div>A search was conducted in MEDLINE, Scopus, Embase, Web of Science, and CENTRAL databases for randomized controlled trials up to April 2023 with a follow-up time of at least 1 year. Restoration and implant survival and failure rates, marginal bone loss (MBL), bleeding on probing (BOP), and technical complications were analyzed by 2 reviewers. Statistical analyses were conducted using the R-statistics software program. The risk of bias was assessed by the Cochrane Risk of Bias Tool 2 (RoB 2), and the certainty of evidence by the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach.</div></div><div><h3>Results</h3><div>A total of 11 out of 2030 records were identified by title and abstract, and 4 records were included after full-text analysis. The statistical analysis revealed no significant difference in MBL (MD –0.11, 95% CI: [–0.25; 0.03]), BOP (OR 0.66, 95% CI: [0.25; 1.77]), or implant failure (OR 1.30, 95% CI: [0.24; 7.08]). Monolithic zirconia presented significantly less chipping over 1 year (OR 0.17, 95% CI: [0.03; 0.99]). The chipping rate was 0% for monolithic zirconia and 7.61% for metal-ceramic. Based on a narrative review, the restoration survival rate was 97.5% in the monolithic zirconia group and 99.1% in the metal-ceramic group.</div></div><div><h3>Conclusions</h3><div>Monolithic zirconia showed favorable short-term survival rates and had significantly less chipping over 1 year. Regarding MBL, BOP, and failure rates, both restoration types presented similar results at the 1-year follow-up.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 881-889"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9677298","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}

{"title":"Differences in maxillomandibular relationship recorded at centric relation when using a conventional method, four intraoral scanners, and a jaw tracking system: A clinical study","authors":"Marta Revilla-León DDS, MSD, PhD ,&nbsp;Rubén Agustín-Panadero DMD, PhD ,&nbsp;Jonathan M. Zeitler ,&nbsp;Abdul B. Barmak MD, MSc, EdD ,&nbsp;Burak Yilmaz DDS, PhD ,&nbsp;John C. Kois DMD, MSD ,&nbsp;Jorge Alonso Pérez-Barquero DDS","doi":"10.1016/j.prosdent.2022.12.007","DOIUrl":"10.1016/j.prosdent.2022.12.007","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Statement of problem&lt;/h3&gt;&lt;div&gt;&lt;span&gt;Digital systems including intraoral scanners (IOSs) and optical jaw tracking systems can be used to acquire the maxillomandibular relationship at the &lt;/span&gt;centric relation (CR). However, the discrepancy of the maxillomandibular relationship recorded at the CR position when using digital methods remains uncertain.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Purpose&lt;/h3&gt;&lt;div&gt;The purpose of this clinical study was to compare the accuracy of the maxillomandibular relationship recorded at the CR position using a conventional procedure, 4 different IOSs, and an optical jaw tracking system.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Material and methods&lt;/h3&gt;&lt;div&gt;A completely dentate volunteer was selected. A Kois deprogrammer (KD) was fabricated. Six groups were created based on the technique used to obtain diagnostic casts and record the maxillomandibular relationship at the CR position: conventional procedures (CNV group), 4 IOS groups: TRIOS4 (TRIOS4 group), iTero Element 5D (iTero group), i700 wireless (i700 group), Primescan (Primescan group), and a jaw tracking system (Modjaw) (Modjaw group) (n=10). In the CNV group, conventional diagnostic stone casts were obtained. A facebow record was used to mount the maxillary cast on an articulator&lt;span&gt; (Panadent). The KD was used to obtain a CR record for mounting the mandibular cast, and the mounted casts were digitized by using a scanner (T710) to acquire the reference scans. In the TRIOS group, intraoral scans were obtained and duplicated 10 times. The KD was used to obtain a bilateral virtual occlusal record at the CR position. To acquire the specimens of the iTero, i700, and Primescan groups, the procedures in the TRIOS4 group were followed, but with the corresponding IOS. In the Modjaw group, the KD was used to record and export the maxillomandibular relationship at the CR position. Articulated virtual casts of each group were exported. Thirty-six interlandmark linear measurements were computed on both the reference and experimental scans. The distances obtained on the reference scan were used to calculate the discrepancies with the distances obtained on each experimental scan. The data were analyzed by using 1-way ANOVA followed by the pairwise comparison Tukey tests (α=.05).&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;The trueness and precision of the maxillomandibular relationship record were significantly affected by the technique used (&lt;em&gt;P&lt;/em&gt;&lt;.001). The maxillomandibular relationship trueness values from high to low were iTero (0.14 ±0.09 mm), followed by the Modjaw (0.20 ±0.04 mm) and the TRIOS4 (0.22 ±0.09 mm) groups. However, the iTero, Modjaw, and TRIOS4 groups were not significantly different from each other (&lt;em&gt;P&lt;/em&gt;&gt;.05). The i700 group obtained the lowest trueness and precision values (0.40 ±0.22 mm) of all groups tested, followed by the Primescan grop (0.26±0.13 mm); however, the i700 and Primescan groups had significantly lower trueness and precision than only the iTero gro","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 964-972"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10567398","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}

{"title":"Use of 3-dimensional imaging and manufacturing for bilateral auricular prostheses: A case series of six patients with congenital auricular defects","authors":"Muhanad M. Hatamleh BSc, MPhil, MSc, PhD ,&nbsp;Heba Mohammad Hatamlah BSc, MSc, PhD ,&nbsp;Amjad Nuseir MD","doi":"10.1016/j.prosdent.2022.09.022","DOIUrl":"10.1016/j.prosdent.2022.09.022","url":null,"abstract":"<div><div>The prosthetic reconstruction of unilateral ear deformity<span> is a straightforward procedure which relies on copying the details, position, and symmetry of the existing contralateral<span> ear. However, reconstructing bilaterally missing ears is challenging. The use of 3-dimensional (3D) technology in the prosthetic reconstruction of the bilaterally missing ears of 6 patients is described. The deformity site was created directly by segmenting the patient’s digital scan or indirectly via a desktop scanner. Adequate bone quantity and quality for implant retention and optimal implant locations were also identified virtually. The use of 3D technologies has made it more straightforward to accomplish ear symmetry, as well as to validate the orientation and location of the ears reliably with the minimum subjectivity. The printed ears were matched in shape, surface texture, and anatomy. The skin color was straightforward to record and store so that it could be reproduced at a future time. Overall, the digital manufacture of the ears was controlled, consistent, and reproducible.</span></span></div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1076-1081"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40718969","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}

{"title":"Evaluation of the biomechanics of Aramany class I obturators of different designs using numerical and experimental methods. Part I: Retention and associated stress","authors":"Mohammed A. Mousa BDSc, MFDs, MDSc, PhD ,&nbsp;Adam Husein BDS, GradDipClinDent, DClinDent (Prosthodontics) ,&nbsp;Mohamed I. El-Anwar BSc, MSc, PhD ,&nbsp;Norwahida Yusoff BSc, MSc, PhD ,&nbsp;Johari Yap Abdullah B.S. & I.T., GradDip ICT, MSc, PhD (Craniofacial Biology)","doi":"10.1016/j.prosdent.2024.07.011","DOIUrl":"10.1016/j.prosdent.2024.07.011","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Studies on the biomechanics of obturators in the currently used designs of Aramany class I defect are lacking. Also, modifications of the designs presently used in unilateral palatal defects are needed to produce a prosthesis with more retention and less stress on the abutments.</div></div><div><h3>Purpose</h3><div>The purpose of part I of this study was to differentiate among Aramany class I obturators of 4 designs regarding retention and associated stress using numerical and experimental methods.</div></div><div><h3>Material and methods</h3><div><span>Four finite element models and 36 different base obturators were fabricated and divided into 9 acrylic resin bases retained with Adams clasps and 9 linear, 9 tripodal, and 9 fully tripodal design obturators from casts obtained from a scanned skull. After modification, the prostheses were fabricated on the casts obtained from a 3-dimensionally printed cast. The retention was evaluated, and the data were collected and analyzed using a statistical software program (α=.05). The displacement and associated stress in the assorted casts were compared by using 5-N displacing force at 3 points using </span>finite element analysis. The quantitative assessment was made by measuring the displacement and von Mises stress distribution on the prostheses and their supporting structures. The qualitative analysis was done by using a visual color mapping to depict stress location and intensity.</div></div><div><h3>Results</h3><div>No significant differences were found between fully tripodal (4.478 ±2.303 MPa) and tripodal obturators (4.478 ±2.286 MPa; <em>P</em>=.153), although fully tripodal showed more resistance to anterior displacement (4.522 ±0.979 and 3.553 ±1.58 MPa for fully tripodal and tripodal designs, respectively; <em>P</em>=.007), and tripodal obturators produced more resistance to middle displacement (5.441 ±1.778 and 2.784 ±0.432 MPa for tripodal and fully tripodal design respectively; <em>P</em>=.001). The fully tripodal obturator showed more retention (3.736 ±1.182 MPa) than the linear one (2.493 ±1.052 MPa; <em>P</em><span><span><span>=.001). The maxillary central incisor was the most stressed abutment, followed by the </span>lateral incisor, while the </span>second molar was the least.</span></div></div><div><h3>Conclusions</h3><div>Regarding retention, the fully tripodal obturator produces retention comparable with the tripodal and significantly more than the linear. Acrylic resin prostheses retained with Adams clasps may be similar to metal-based prostheses regarding retention and stress distribution on the supporting structures.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1088.e1-1088.e8"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141759391","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}

{"title":"Response to Letter to the Editor regarding, “Clinical benefits of immediate dentin sealing: A systematic review and meta-analysis” by Alghuali et al","authors":"Mohammed Ahmed Alghauli MDSc,&nbsp;Ahmed Yaseen Alqutaibi PhD,&nbsp;Sary Borzangy PhD","doi":"10.1016/j.prosdent.2024.07.025","DOIUrl":"10.1016/j.prosdent.2024.07.025","url":null,"abstract":"","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1097-1099"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141902041","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}

{"title":"Comparative analysis of polishing protocols on microhardness and surface roughness of occlusal device materials fabricated using microwave-polymerized acrylic or 3D printed resins.","authors":"Thiago Carvalho de Sousa, Alexia Guimarães Ramos, Fernanda Cristina Pimentel Garcia, Rodrigo Antonio de Medeiros","doi":"10.1016/j.prosdent.2024.10.010","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.10.010","url":null,"abstract":"<p><strong>Statement of problem: </strong>With advancements in digital technologies, the digital workflow has revolutionized the fabrication of occlusal devices through additive methods using 3-dimensional (3D) printing. However, an established protocol for polishing 3D printed occlusal devices is lacking, despite this step being crucial for minimizing surface porosity, material fatigue and preventing bacterial plaque accumulation, thereby contributing to device longevity.</p><p><strong>Purpose: </strong>The purpose of this in vitro study was to evaluate the impact of polishing systems on the surface roughness and Vickers microhardness of heat-polymerizing acrylic resin and 3D printing resins used for occlusal devices.</p><p><strong>Material and methods: </strong>One hundred and twenty microwaved-polymerized acrylic resin and 3D printed resin specimens (40×40×3 mm) were divided into 12 groups (n=10) based on the type of resin and polishing protocol (Sealant, DhPro, Dhpro + Sealant, Trihawk, Trihawk + Sealant, and control). Surface roughness (Ra) and Vickers microhardness were tested. Additionally, 1 specimen per group underwent scanning electron microscopy before and after thermocycling (5000 cycles, 5 ºC and 55 ºC). Data analysis involved a 2-way ANOVA, 2-way repeated measured ANOVA, and Tukey's multiple comparison test (α=.05).</p><p><strong>Results: </strong>The Trihawk polishing protocol yielded significantly higher microhardness and lower surface roughness values for both resins. After thermocycling, the acrylic resin maintained its surface roughness for the Trihawk, Trihawk + Sealant, and unpolished groups, but all groups showed decreased microhardness. The 3D printing resin exhibited increased surface roughness and reduced microhardness after thermocycling across all groups.</p><p><strong>Conclusions: </strong>The polishing protocol affects the surface microhardness and roughness of 3D printing resins and microwave acrylic resins for occlusal devices. Polishing using the Trihawk polishing protocol demonstrated significantly smoother and harder surfaces for both resins tested.</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":"142564244","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}

{"title":"Which clinical and laboratory procedures should be used to fabricate digital complete dentures? A systematic review","authors":"Khaing Myat Thu BDS, DipDSc, PhD ,&nbsp;Pedro Molinero-Mourelle Dr med dent, PhD ,&nbsp;Andy Wai Kan Yeung BDS, PhD ,&nbsp;Samir Abou-Ayash Prof, Dr med dent ,&nbsp;Walter Yu Hang Lam BDS, MDS(Pros), AdvDipProsth, FHKAM, FCDSHK, MFDS (RCSEd), MFDS (RCPSG), FDS (RCSEd), FDS (RCPSG), MPros RCSEd, FRACDS","doi":"10.1016/j.prosdent.2023.07.027","DOIUrl":"10.1016/j.prosdent.2023.07.027","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Digital workflows for digital complete denture fabrication have a variety of clinical and laboratory procedures, but their outcomes and associated complications are currently unknown.</div></div><div><h3>Purpose</h3><div>The purpose of this systematic review was to evaluate the clinical and laboratory procedures for digital complete dentures, their outcomes, and associated complications.</div></div><div><h3>Material and methods</h3><div>Electronic literature searches were conducted on PubMed/Medline, Embase, and Web of Science for studies published from January 2000 to September 2022 and screened by 2 independent reviewers. Information on digital complete denture procedures, materials, their outcomes, and associated complications was extracted.</div></div><div><h3>Results</h3><div>Of 266 screened studies, 39 studies were included. While 26 assessed definitive complete dentures, 7 studies assessed denture bases, 2 assessed trial dentures, and 4 assessed the digital images only. Twenty-four studies used border molded impression technique, 3 studies used a facebow record, and 7 studies used gothic arch tracing. Only 13 studies performed trial denture placement. Twenty-one studies used milling, and 17 studies used 3D printing for denture fabrication. One study reported that the retention of maxillary denture bases fabricated from a border-molded impression (14.5 to 16.1 N) was statistically higher than the retention of those fabricated from intraoral scanning (6.2 to 6.6 N). The maximum occlusal force of digital complete denture wearers was similar across different fabrication procedures. When compared with the conventional workflow, digital complete dentures required statistically shorter clinical time with 205 to 233 minutes saved. Up to 37.5% of participants reported loss of retention and up to 31.3% required a denture remake. In general, ≥1 extra visit and 1 to 4 unscheduled follow-up visits were needed. The outcomes for patient satisfaction and oral health-related quality of life were similar between conventional, milled, and 3D printed complete dentures.</div></div><div><h3>Conclusions</h3><div>Making a border-molded impression is still preferred for better retention, and trial denture placement is still recommended to optimize the fabrication of definitive digital complete dentures.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 922-938"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10246736","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}