The aim of the study was to evaluate the effect of two distinct light-polymerization protocols, used by dental students, on the placement time and polymerization efficiency of bulk-fill (BF) and conventional (CRC) resin-based composites (RBCs).
Methods
Thirty dental students participated in this study. Each student was asked to complete four Class II RBC restorations using two different types of RBCs (BF and CRC) paired with two distinct light-polymerization protocols: one using 1200 mW/cm2 irradiance (P1200) and one using 800 mW/cm2 irradiance (P800). Manufacturer instructions for curing times relative to these irradiance levels were adhered to. The restorations were retrieved, sectioned and Vickers microhardness (VMH) was measured at specific reading points. The placement time was recorded for each procedure. Multivariate analysis of variance and Bonferroni post hoc test were used for data analysis.
Results
Bulk-fill RBCs were associated with significantly shortened placement times (P < 0.001). VMH values of CRC-P800 were significantly higher compared to all other groups (P < 0.02). Across all groups tested, the VMH values at the deepest reading points exceeded those at the occlusal surfaces by over 80 %.
Conclusions
The use of BF RBCs with a P1200 light-polymerization protocol reduced students’ procedural times while maintaining effective polymerization of the restorations.
{"title":"Efficiency of bulk-fill versus conventional resin-based composite in class II restorations: A dental student perspective","authors":"Doaa R.M. Ahmed , Reema Alhaniny , Safa Alyousef , Moustafa Aboushelib , Abdulaziz Samran","doi":"10.1016/j.sdentj.2024.08.004","DOIUrl":"10.1016/j.sdentj.2024.08.004","url":null,"abstract":"<div><h3>Purpose/objectives</h3><div>The aim of the study was to evaluate the effect of two distinct light-polymerization protocols, used by dental students, on the placement time and polymerization efficiency of bulk-fill (BF) and conventional (CRC) resin-based composites (RBCs).</div></div><div><h3>Methods</h3><div>Thirty dental students participated in this study. Each student was asked to complete four Class II RBC restorations using two different types of RBCs (BF and CRC) paired with two distinct light-polymerization protocols: one using 1200 mW/cm<sup>2</sup> irradiance (P1200) and one using 800 mW/cm<sup>2</sup> irradiance (P800). Manufacturer instructions for curing times relative to these irradiance levels were adhered to. The restorations were retrieved, sectioned and Vickers microhardness (VMH) was measured at specific reading points. The placement time was recorded for each procedure. Multivariate analysis of variance and Bonferroni post hoc test were used for data analysis.</div></div><div><h3>Results</h3><div>Bulk-fill RBCs were associated with significantly shortened placement times (<em>P</em> < 0.001). VMH values of CRC-P800 were significantly higher compared to all other groups (<em>P</em> < 0.02). Across all groups tested, the VMH values at the deepest reading points exceeded those at the occlusal surfaces by over 80 %.</div></div><div><h3>Conclusions</h3><div>The use of<!--> <!-->BF RBCs with a P1200 light-polymerization protocol reduced students’ procedural times while maintaining effective polymerization of the restorations.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1364-1368"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.07.014
Mustafa Tariq Mutar, Anas F Mahdee
Several factors can directly damage dental pulp. Pulp healing requires controlled inflammation, which can be directed through specialized medical materials to eliminate infection and promote pulp repair. This review aimed to categorise these materials and identify their histological and molecular effects on pulp tissue or isolated cells in culture. In addition, we sought to identify which of these materials could trigger a favourable inflammatory pathway that could direct the pulpal response toward healing and regeneration. A single database (PubMed) was used, and the search strategy was based on MeSH terms. The search was conducted for articles published in English between January 2010 and December 2023, including those with histological and molecular findings. Only 33 articles met our inclusion criteria. Several conventional pulp capping agents have been shown to induce pulp healing and repair through dentine bridge formation. These materials show varying degrees of inflammation, ranging from moderate to mild, which may diminish over time. Other experimentally developed materials were also studied, either alone or in combination with conventional products; these materials demonstrated promising potential to reduce inflammation and superficial necrosis associated with conventional products. However, they still do not meet all the criteria for ideal pulp-capping materials and need further development for commercialisation. Several inflammatory pathways were also addressed in this review, along with favourable tissue responses to induce pulp regeneration. The immunomodulatory role of M2 phenotype macrophages is currently the most accepted, though the lack of standardised experimental procedures across studies hinder precise decision-making.
{"title":"Different pulp capping agents and their effect on pulp inflammatory response: A narrative review","authors":"Mustafa Tariq Mutar, Anas F Mahdee","doi":"10.1016/j.sdentj.2024.07.014","DOIUrl":"10.1016/j.sdentj.2024.07.014","url":null,"abstract":"<div><div>Several factors can directly damage dental pulp. Pulp healing requires controlled inflammation, which can be directed through specialized medical materials to eliminate infection and promote pulp repair. This review aimed to categorise these materials and identify their histological and molecular effects on pulp tissue or isolated cells in culture. In addition, we sought to identify which of these materials could trigger a favourable inflammatory pathway that could direct the pulpal response toward healing and regeneration. A single database (PubMed) was used, and the search strategy was based on MeSH terms. The search was conducted for articles published in English between January 2010 and December 2023, including those with histological and molecular findings. Only 33 articles met our inclusion criteria. Several conventional pulp capping agents have been shown to induce pulp healing and repair through dentine bridge formation. These materials show varying degrees of inflammation, ranging from moderate to mild, which may diminish over time. Other experimentally developed materials were also studied, either alone or in combination with conventional products; these materials demonstrated promising potential to reduce inflammation and superficial necrosis associated with conventional products. However, they still do not meet all the criteria for ideal pulp-capping materials and need further development for commercialisation. Several inflammatory pathways were also addressed in this review, along with favourable tissue responses to induce pulp regeneration. The immunomodulatory role of M2 phenotype macrophages is currently the most accepted, though the lack of standardised experimental procedures across studies hinder precise decision-making.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1295-1306"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.08.003
Reinaldo Missaka , Sérgio Nakazone Jr , Mayra Torres Vasques , Albani Gouveia Zampol , Lucas Silva Mendes , Márcio Katsuyoshi Mukai , Maria Gabriela Haye Biazevic , Rosemary Sadami Arai Shinkai , Tomie Toyota de Campos
Objective
Temporomandibular joint disorder (TMD) comprises several musculoskeletal conditions in the orofacial region, with chronic pain and/or dysfunction involving the temporomandibular joint (TMJ) and masticatory muscles. This study assessed the clinical characteristics of patients with TMD treated at a public tertiary care facility in Brazil.
Methods
In this retrospective study, we assessed data from adult patients attending the Center for Occlusion, TMD, and Orofacial Pain at a Brazilian school of dentistry, from 2000 to 2020. Data from eligible charts were collected: demographic variables, clinical complaints, location of pain, pain intensity (10-point VAS), duration of treatment, and therapeutic procedures. Data were analyzed using descriptive and inferential statistics at the 0.05 significance level.
Results
The sample consisted of 2324 patients (79.4 % females) with a median age of 38 years and median duration of treatment of 35 days. Major clinical complaints were craniofacial pain (including in the TMJ region) (82.9 %), self-reported bruxism (clenching/grinding) (44.6 %), and clicking/crepitation (39.1 %). Craniofacial pain was associated with female gender and age of 39 years and older, but not with bruxism. The most frequent procedures were counseling (96.5 %), exercises (47.5 %), occlusal splints (18.5 %), and physiotherapy (13.8 %). Reduction in pain intensity was moderately associated with multiple (3 or more) therapies and longer duration of treatment.
Conclusion
It can be concluded that the patients presented a diversity of clinical characteristics requiring individualized treatment. A multimodal, interdisciplinary therapeutic approach, including counseling, appears to benefit most patients with TMD-related pain.
{"title":"Clinical profile of Brazilian patients with temporomandibular joint disorder and orofacial pain: A 20-year retrospective study","authors":"Reinaldo Missaka , Sérgio Nakazone Jr , Mayra Torres Vasques , Albani Gouveia Zampol , Lucas Silva Mendes , Márcio Katsuyoshi Mukai , Maria Gabriela Haye Biazevic , Rosemary Sadami Arai Shinkai , Tomie Toyota de Campos","doi":"10.1016/j.sdentj.2024.08.003","DOIUrl":"10.1016/j.sdentj.2024.08.003","url":null,"abstract":"<div><h3>Objective</h3><div>Temporomandibular joint disorder (TMD) comprises several musculoskeletal conditions in the orofacial region, with chronic pain and/or dysfunction involving the temporomandibular joint (TMJ) and masticatory muscles. This study assessed the clinical characteristics of patients with TMD treated at a public tertiary care facility in Brazil.</div></div><div><h3>Methods</h3><div>In this retrospective study, we assessed data from adult patients attending the Center for Occlusion, TMD, and Orofacial Pain at a Brazilian school of dentistry, from 2000 to 2020. Data from eligible charts were collected: demographic variables, clinical complaints, location of pain, pain intensity (10-point VAS), duration of treatment, and therapeutic procedures. Data were analyzed using descriptive and inferential statistics at the 0.05 significance level.</div></div><div><h3>Results</h3><div>The sample consisted of 2324 patients (79.4 % females) with a median age of 38 years and median duration of treatment of 35 days. Major clinical complaints were craniofacial pain (including in the TMJ region) (82.9 %), self-reported bruxism (clenching/grinding) (44.6 %), and clicking/crepitation (39.1 %). Craniofacial pain was associated with female gender and age of 39 years and older, but not with bruxism. The most frequent procedures were counseling (96.5 %), exercises (47.5 %), occlusal splints (18.5 %), and physiotherapy (13.8 %). Reduction in pain intensity was moderately associated with multiple (3 or more) therapies and longer duration of treatment.</div></div><div><h3>Conclusion</h3><div>It can be concluded that the patients presented a diversity of clinical characteristics requiring individualized treatment. A multimodal, interdisciplinary therapeutic approach, including counseling, appears to benefit most patients with TMD-related pain.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1344-1349"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
When selecting an instrument for canal preparation, it is important to consider several parameters that influence the shaping efficiency, including instrument design, metallurgy, and operating motion. This study aimed to evaluate the shaping ability of the ProTaper Next (PTN), WaveOne Gold (WOG), and XP-endo Rise Shaper (XPRS) rotary systems in severely and abruptly curved root canals using cone beam computed tomography (CBCT) and ImageJ software.
Materials and Methods
Forty-eight mesial root canals of the mandibular first molars were assigned equally to three groups: PTN, WOG, and XPRS. Using ImageJ software, CBCT images were acquired pre- and post-instrumentation to assess dentin removal, remaining dentin thickness (RDT), canal transportation, and centering ratio at the coronal, middle, and apical levels. Statistical analyses were conducted on all numerical data.
Results
All rotary systems removed significantly more distocoronal dentin in the danger zone (DZ), than the mesiocoronal area. PTN removed significantly more dentin and caused less RDT than XPRS (p < 0.05). However, there were no significant differences between PTN-WOG and WOG-XPRS. In the DZ, the highest percentage of specimens with an RDT < 0.5 mm was observed when using PTN (50%), followed by WOG (31.3%), and XPRS (6.3%). Compared with PTN and WOG, XPRS demonstrated less coronal transportation. Among all rotary systems, there was no significant difference in apical transportation or centering ratio.
Conclusions
Based on our observations, all rotary instruments exhibited a tendency to remove dentin in the DZ, but to different degrees. XPRS demonstrated better results in terms of coronal transportation and dentin thickness in the DZ. Comparable centering abilities and minimal apical transportation were demonstrated using all rotary instruments.
{"title":"Evaluation of the shaping ability of different rotary file systems in severely and abruptly curved root canals using cone beam computed tomography","authors":"Chanapa Damkoengsunthon , Adjabhak Wongviriya , Weeraya Tantanapornkul , Kessiri Wisithphrom , Kittipong Ketpan , Thosapol Piyapattamin , Peraya Puapichartdumrong","doi":"10.1016/j.sdentj.2024.07.016","DOIUrl":"10.1016/j.sdentj.2024.07.016","url":null,"abstract":"<div><h3>Background</h3><div>When selecting an instrument for canal preparation, it is important to consider several parameters that influence the shaping efficiency, including instrument design, metallurgy, and operating motion. This study aimed to evaluate the shaping ability of the ProTaper Next (PTN), WaveOne Gold (WOG), and XP-endo Rise Shaper (XPRS) rotary systems in severely and abruptly curved root canals using cone beam computed tomography (CBCT) and ImageJ software.</div></div><div><h3>Materials and Methods</h3><div>Forty-eight mesial root canals of the mandibular first molars were assigned equally to three groups: PTN, WOG, and XPRS. Using ImageJ software, CBCT images were acquired pre- and post-instrumentation to assess dentin removal, remaining dentin thickness (RDT), canal transportation, and centering ratio at the coronal, middle, and apical levels. Statistical analyses were conducted on all numerical data.</div></div><div><h3>Results</h3><div>All rotary systems removed significantly more distocoronal dentin in the danger zone (DZ), than the mesiocoronal area. PTN removed significantly more dentin and caused less RDT than XPRS (p < 0.05). However, there were no significant differences between PTN-WOG and WOG-XPRS. In the DZ, the highest percentage of specimens with an RDT < 0.5 mm was observed when using PTN (50%), followed by WOG (31.3%), and XPRS (6.3%). Compared with PTN and WOG, XPRS demonstrated less coronal transportation. Among all rotary systems, there was no significant difference in apical transportation or centering ratio.</div></div><div><h3>Conclusions</h3><div>Based on our observations, all rotary instruments exhibited a tendency to remove dentin in the DZ, but to different degrees. XPRS demonstrated better results in terms of coronal transportation and dentin thickness in the DZ. Comparable centering abilities and minimal apical transportation were demonstrated using all rotary instruments.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1333-1338"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.09.011
Sundus Mohammed Bukhary
Introduction
Endodontic retreatment procedures with calcium silicate-based sealers (CSS) have been receiving greater credibility in clinically challenging situations. The objective of this systematic review was to analyze the published in vitro studies for the retrievability of CSS in comparison to resin-based sealers evaluated using micro-computed tomography (micro-CT) in terms of the volume of the residual root canal filling materials, time taken, efficacy of the solvent, and different systems used during the retreatment procedure.
Methods
The study protocol was registered in the International Prospective Register of Systematic Reviews and conducted in adherence to PRISMA 2020 checklist. Accordingly, an electronic literature search was done to identify studies published in English language, within the time frame from January 2004 to June 2024. The search was conducted through popular databases including PubMed (Medline – National Library of Medicine), Scopus (Science Direct), EMBASE and Google Scholar following the inclusion and exclusion criteria answering the research question in focus.
Results
After thorough scrutiny, 15 studies qualified for the systematic review. Following retreatment, in all of the studies pre-treatment working length was achieved, with both the types of endodontic sealers. However, none of the micro-CT studies reported complete removal of endodontic filling material from the root canals. Irrespective of the sealer type used, within each root canal, apical third had the greatest amount of remaining filling material, followed by the middle and coronal thirds.
Conclusions
Retreatment of canals obturated with bioceramic sealers is feasible in most cases using traditional instruments and techniques. Active irrigation and supplemental mechanical removal, which employs lasers, XP-Finisher, and ultrasonics, adds advantage to maximize material removal.
{"title":"Retreatability of calcium silicate-based sealers based on micro-computed tomographic evaluation − A systematic review","authors":"Sundus Mohammed Bukhary","doi":"10.1016/j.sdentj.2024.09.011","DOIUrl":"10.1016/j.sdentj.2024.09.011","url":null,"abstract":"<div><h3>Introduction</h3><div>Endodontic retreatment procedures with calcium silicate-based sealers (CSS) have been receiving greater credibility in clinically challenging situations. The objective of this systematic review was to analyze the published <em>in vitro</em> studies for the retrievability of CSS in comparison to resin-based sealers evaluated using micro-computed tomography (micro-CT) in terms of the volume of the residual root canal filling materials, time taken, efficacy of the solvent, and different systems used during the retreatment procedure.</div></div><div><h3>Methods</h3><div>The study protocol was registered in the International Prospective Register of Systematic Reviews and conducted in adherence to PRISMA 2020 checklist. Accordingly, an electronic literature search was done to identify studies published in English language, within the time frame from January 2004 to June 2024. The search was conducted through popular databases including PubMed (Medline – National Library of Medicine), Scopus (Science Direct), EMBASE and Google Scholar following the inclusion and exclusion criteria answering the research question in focus.</div></div><div><h3>Results</h3><div>After thorough scrutiny, 15 studies qualified for the systematic review. Following retreatment, in all of the studies pre-treatment working length was achieved, with both the types of endodontic sealers. However, none of the micro-CT studies reported complete removal of endodontic filling material from the root canals. Irrespective of the sealer type used, within each root canal, apical third had the greatest amount of remaining filling material, followed by the middle and coronal thirds.</div></div><div><h3>Conclusions</h3><div>Retreatment of canals obturated with bioceramic sealers is feasible in most cases using traditional instruments and techniques. Active irrigation and supplemental mechanical removal, which employs lasers, XP-Finisher, and ultrasonics, adds advantage to maximize material removal.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1278-1294"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.08.007
Moritz Nicolas Laser , Tawfiq Hijazi Alsadi , Farid Muwaquet Rodriguez , Susana Muwaquet Rodriguez
Introduction
Pulpotomy is the total amputation of coronal pulp tissue and subsequent placement of a pulpotomy agent over the root canal orifices, followed by a coronal seal. The most suitable pulpotomy agent for successful treatment outcomes remains controversial.
Objectives
To evaluate and compare the clinical and radiographic success of calcium hydroxide (CH) and Biodentine (BD) in primary tooth pulpotomy at 6 and 12 months.
Materials and methods
An automatised search of the PubMed-Medline, Web of Science, and SCOPUS electronic databases was performed to identify scientific articles on primary tooth pulpotomies with either calcium hydroxide (CH) or Biodentine (BD) as a pulpotomy agent, published until January 2024. The software used for meta-analysis was R 4.3.1 (R Core Team, 2023).
Results
Of the 594 potentially eligible articles, 14 met the inclusion criteria: seven articles on CH pulpotomy and seven articles on BD pulpotomy with 6- and 12-months of follow-up. The meta-analysis concluded a mean clinical success rate of 91.8 % at 6 months and 79.0 % at 12 months for the CH group, and 99.2 % at 6 months and 98.8 % at 12 months for the BD group. In terms of the mean radiographic success, the CH group achieved 74.2 % at 6 months and 63.7 % at 12 months, whereas the BD group achieved 99.4 % at 6 months and 98.4 % at 12 months. In comparison, the meta-analysis concluded a marginally significant difference in clinical success in favour of the BD group at 6 months (p = 0.091). At 12 months, clinical success was significant in the BD group (p = 0.023). Regarding radiographic success, a significant difference in favour of the BD group was observed at 6 (p = 0.008) and 12 months (p < 0.001).
Conclusion
BD showed significantly higher clinical and radiographic success than CH in pulpotomy.
{"title":"Pulpotomy in primary teeth: Biodentine™ versus calcium hydroxide. A systematic review and meta-analysis","authors":"Moritz Nicolas Laser , Tawfiq Hijazi Alsadi , Farid Muwaquet Rodriguez , Susana Muwaquet Rodriguez","doi":"10.1016/j.sdentj.2024.08.007","DOIUrl":"10.1016/j.sdentj.2024.08.007","url":null,"abstract":"<div><h3>Introduction</h3><div>Pulpotomy is the total amputation of coronal pulp tissue and subsequent placement of a pulpotomy agent over the root canal orifices, followed by a coronal seal. The most suitable pulpotomy agent for successful treatment outcomes remains controversial.</div></div><div><h3>Objectives</h3><div>To evaluate and compare the clinical and radiographic success of calcium hydroxide (CH) and Biodentine (BD) in primary tooth pulpotomy at 6 and 12 months.</div></div><div><h3>Materials and methods</h3><div>An automatised search of the PubMed-Medline, Web of Science, and SCOPUS electronic databases was performed to identify scientific articles on primary tooth pulpotomies with either calcium hydroxide (CH) or Biodentine (BD) as a pulpotomy agent, published until January 2024. The software used for meta-analysis was R 4.3.1 (R Core Team, 2023).</div></div><div><h3>Results</h3><div>Of the 594 potentially eligible articles, 14 met the inclusion criteria: seven articles on CH pulpotomy and seven articles on BD pulpotomy with 6- and 12-months of follow-up. The meta-analysis concluded a mean clinical success rate of 91.8 % at 6 months and 79.0 % at 12 months for the CH group, and 99.2 % at 6 months and 98.8 % at 12 months for the BD group. In terms of the mean radiographic success, the CH group achieved 74.2 % at 6 months and 63.7 % at 12 months, whereas the BD group achieved 99.4 % at 6 months and 98.4 % at 12 months. In comparison, the meta-analysis concluded a marginally significant difference in clinical success in favour of the BD group at 6 months (p = 0.091). At 12 months, clinical success was significant in the BD group (p = 0.023). Regarding radiographic success, a significant difference in favour of the BD group was observed at 6 (p = 0.008) and 12 months (p < 0.001).</div></div><div><h3>Conclusion</h3><div>BD showed significantly higher clinical and radiographic success than CH in pulpotomy.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1261-1267"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.08.002
Chika Rani Safitri , Wiet Sidharta , Artanti Kusumaningsih , Farisa Miyuki Wicaksono , M. Aljunaid , Agung Krismariono
Objective
Hailed as one of the most fundamental and important treatment in management of periodontal disease, scalling and root planning has limitations regarding microorganism elimination. Meanwhile, turmeric has been proven to have a therapeutic effect on gingivitis and periodontitis. This study aimed to analyze the impact of curcumin 1% methanolic extract on the expression of Matrix Metalloproteinase-1, Matrix Metalloproteinase-8, Matrix Metalloproteinase -13, neutrophil, macrophage, and lymphocyte number in the gingiva of Wistar rats exposed to Porphyromonas gingivalis bacteria (P. gingivalis).
Materials and methods
The experimental animals used were Wistar rats, arbitrarilly split up into three experimental groups namely: normal, control (induced with periodontitis, received no treatment), and treatment (Periodontitis with 1% curcumin treatment). The samples were taken from the gingival tissue of the mandibular incisors on 1 and 7 days. Immunohistochemical and Hematoxylin Eosin staining were performed to measure the expression of Matrix Metalloproteinase-1, Matrix Metalloproteinase-8, Matrix Metalloproteinase-13, and the number of neutrophils, macrophages, and lymphocytes. Data were analyzed for mean standard deviation. The Oneway ANOVA was then performed to see whether there is a significant difference between experimental groups, the test then commenced with Tukey’s Honestly Significant Difference test with a significance level (α=0.05).
Results
MMP-8, MMP-13, neutrophil, and lymphocyte numbers in the treatment groups were significantly lower with P<0.05 than in the control groups in the 1 and 7 days. Meanwhile, in MMP-1 and macrophage numbers the difference was deemed not significant when control and treatment groups are compared.
Conclusion
The administration of 1% curcumin can significantly reduce the expression of MMP-8, MMP-13, neutrophil and lymphocyte cell numbers, but there is no reducing the number of macrophage cells and MMP-1 expression in gingiva of Wistar rats exposed to P. gingivalis bacteria.
{"title":"The effect of curcumin 1% methanolic extract on the expression of Matrix Metalloproteinase-1, Matrix Metalloproteinase-8, Matrix Metalloproteinase-13, neutrophil, macrophage, lymphocyte counts in Porphyromonas gingivalis induced periodontitis: a randomized controlled trial","authors":"Chika Rani Safitri , Wiet Sidharta , Artanti Kusumaningsih , Farisa Miyuki Wicaksono , M. Aljunaid , Agung Krismariono","doi":"10.1016/j.sdentj.2024.08.002","DOIUrl":"10.1016/j.sdentj.2024.08.002","url":null,"abstract":"<div><h3>Objective</h3><div>Hailed as one of the most fundamental and important treatment in management of periodontal disease, scalling and root planning has limitations regarding microorganism elimination. Meanwhile, turmeric has been proven to have a therapeutic effect on gingivitis and periodontitis. This study aimed to analyze the impact of curcumin 1% methanolic extract on the expression of Matrix Metalloproteinase-1, Matrix Metalloproteinase-8, Matrix Metalloproteinase -13, neutrophil, macrophage, and lymphocyte number in the gingiva of Wistar rats exposed to <em>Porphyromonas gingivalis bacteria</em> (<em>P. gingivalis</em>).</div></div><div><h3>Materials and methods</h3><div>The experimental animals used were Wistar rats, arbitrarilly split up into three experimental groups namely: normal, control (induced with periodontitis, received no treatment), and treatment (Periodontitis with 1% curcumin treatment). The samples were taken from the gingival tissue of the mandibular incisors on 1 and 7 days. Immunohistochemical and Hematoxylin Eosin staining were performed to measure the expression of Matrix Metalloproteinase-1, Matrix Metalloproteinase-8, Matrix Metalloproteinase-13, and the number of neutrophils, macrophages, and lymphocytes. Data were analyzed for mean standard deviation. The Oneway ANOVA was then performed to see whether there is a significant difference between experimental groups, the test then commenced with Tukey’s Honestly Significant Difference test with a significance level (α=0.05).</div></div><div><h3>Results</h3><div>MMP-8, MMP-13, neutrophil, and lymphocyte numbers in the treatment groups were significantly lower with P<0.05 than in the control groups in the 1 and 7 days. Meanwhile, in MMP-1 and macrophage numbers the difference was deemed not significant when control and treatment groups are compared.</div></div><div><h3>Conclusion</h3><div>The administration of 1% curcumin can significantly reduce the expression of MMP-8, MMP-13, neutrophil and lymphocyte cell numbers, but there is no reducing the number of macrophage cells and MMP-1 expression in gingiva of Wistar rats exposed to <em>P. gingivalis</em> bacteria.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1339-1343"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.07.009
Mohammed M. Gad , Fatimah Abdullah Alzaki , Fatimah Ahmed Abuwarwar , Ali Alhammad , Mohammed Al Hussain , Soban Q. Khan , Essam A. Nassar , Neveen M. Ayad
Background
This study evaluated the influence of various printing layer thicknesses with silicon dioxide nanoparticles (SiO2NPs) incorporated as a reinforcement material on the flexural strength of 3D-printed denture base resins.
Material and Methods
Asiga (DentaBASE, Asiga, Erfurt, Germany) and NextDent (Denture 3D+, NextDent B.V., Soesterberg, The Netherlands) 3D-printed resins were modified with different concentrations of SiO2NPs (0.25 % and 0.5 wt%). A total of 180 specimens (bar-shaped, 64 × 10 × 3.3 mm) were fabricated (N = 90/resin). Each resin was subdivided into three groups (n = 30) according to the SiO2NP concentration (0 %, 0.25 %, and 0.5 wt%) Each concentration was divided into three groups (n = 10) according to the printing layer thickness (50 µm, 75 µm, and 100 µm). Specimens were printed according to the manufacturer’s instructions and then subjected to 10,000 thermal cycles. A three-point bending test was used to measure the flexural strength (MPa). One-way analysis of variance (ANOVA) and Tukey’s post hoc tests were used to analyze the data (α = 0.05).
Results
For both resins, printing layer thicknesses of 50 µm and 75 µm exhibited significantly higher flexural strength than 100 µm (P < 0.001). The 50 µm thickness showed the greatest flexural strength values (81.65 ± 4.77 MPa and 84.59 ± 6.21 MPa for Asiga and NextDent, respectively). The 100 µm thickness showed the lowest flexural strength values (74.35 ± 5.37 and 73.66 ± 5.55 MPa) for Asiga and NextDent, respectively. The flexural strength significantly increased with the addition of SiO2NPs with printing layer thicknesses of 50 µm and 75 µm (P < 0.001), whereas the modified and unmodified groups printed with a 100 µm layer thickness did not differ significantly. Asiga 0.25 %/50 µm and NextDent 0.5 %/50 µm showed the highest flexural strength values (97.32 ± 6.82 MPa and 97.54 ± 7.04 MPa, respectively). Scanning electron microscopy fractured surfaces analysis revealed more lamellae and irregularities with lower printing layer thicknesses and SiO2NP concentrations.
Conclusion
The flexural strength increased with printing layer thicknesses of 50 µm or 75 µm combined with SiO2NP reinforcement.
{"title":"Impact of printing layer thickness on the flexural strength of nanocomposite 3D printed resins: An in vitro comparative study","authors":"Mohammed M. Gad , Fatimah Abdullah Alzaki , Fatimah Ahmed Abuwarwar , Ali Alhammad , Mohammed Al Hussain , Soban Q. Khan , Essam A. Nassar , Neveen M. Ayad","doi":"10.1016/j.sdentj.2024.07.009","DOIUrl":"10.1016/j.sdentj.2024.07.009","url":null,"abstract":"<div><h3>Background</h3><div>This study evaluated the influence of various printing layer thicknesses with silicon dioxide nanoparticles (SiO<sub>2</sub>NPs) incorporated as a reinforcement material on the flexural strength of 3D-printed denture base resins.</div></div><div><h3>Material and Methods</h3><div>Asiga (DentaBASE, Asiga, Erfurt, Germany) and NextDent (Denture 3D+, NextDent B.V., Soesterberg, The Netherlands) 3D-printed resins were modified with different concentrations of SiO<sub>2</sub>NPs (0.25 % and 0.5 wt%). A total of 180 specimens (bar-shaped, 64 × 10 × 3.3 mm) were fabricated (N = 90/resin). Each resin was subdivided into three groups (n = 30) according to the SiO<sub>2</sub>NP concentration (0 %, 0.25 %, and 0.5 wt%) Each concentration was divided into three groups (n = 10) according to the printing layer thickness (50 µm, 75 µm, and 100 µm). Specimens were printed according to the manufacturer’s instructions and then subjected to 10,000 thermal cycles. A three-point bending test was used to measure the flexural strength (MPa). One-way analysis of variance (ANOVA) and Tukey’s post hoc tests were used to analyze the data (α = 0.05).</div></div><div><h3>Results</h3><div>For both resins, printing layer thicknesses of 50 µm and 75 µm exhibited significantly higher flexural strength than 100 µm (P < 0.001). The 50 µm thickness showed the greatest flexural strength values (81.65 ± 4.77 MPa and 84.59 ± 6.21 MPa for Asiga and NextDent, respectively). The 100 µm thickness showed the lowest flexural strength values (74.35 ± 5.37 and 73.66 ± 5.55 MPa) for Asiga and NextDent, respectively. The flexural strength significantly increased with the addition of SiO<sub>2</sub>NPs with printing layer thicknesses of 50 µm and 75 µm (P < 0.001), whereas the modified and unmodified groups printed with a 100 µm layer thickness did not differ significantly. Asiga 0.25 %/50 µm and NextDent 0.5 %/50 µm showed the highest flexural strength values (97.32 ± 6.82 MPa and 97.54 ± 7.04 MPa, respectively). Scanning electron microscopy fractured surfaces analysis revealed more lamellae and irregularities with lower printing layer thicknesses and SiO<sub>2</sub>NP concentrations.</div></div><div><h3>Conclusion</h3><div>The flexural strength increased with printing layer thicknesses of 50 µm or 75 µm combined with SiO<sub>2</sub>NP reinforcement.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1307-1312"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141708973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.07.012
Mohammed Aso Abdulghafor, Zanyar Mustafa Amin
Objective
Polyether ether ketone (PEEK), a biocompatible polymer, is being explored as an alternative to metallic alloys for dental implants due to its aesthetic and mechanical properties. This study aimed to enhance the surface biofunctionality through evaluating human MG-63 osteoblastic cell survival, proliferation, differentiation, and mineralization.
Method
Following the sandblasting and plasma treatment of the 3D-printed PEEK discs, a layer of hyaluronic acid (Hya) was coated onto the PEEK surface. Osteoblast cells were seeded onto the discs. The groups consisted of Hya-coated PEEK, uncoated PEEK, and a control group. Cell viability, proliferation, differentiation, and mineralization potential were examined after seven and twenty-one days of cell seeding using the MTT test, DAPI staining technique, alkaline phosphatase activity (ALP), and alizarin red staining.
Results
Hya-coated PEEK increased cell viability (1.48 ± 0.13, 1.49 ± 0.09) compared to the uncoated group (1.19 ± 0.06, 1.26 ± 0.07) and control group (0.98 ± 0.04, 1.00 ± 0.07) after 7 and 21 days. Proliferation rates of coated group (60.50 ± 3.08) were greater than the uncoated (50.33 ± 2.58) and control group (38.33 ± 4.88) at 21 days, respectively. Additionally, the ALP activity on Hya-coated PEEK disks (5.55 ± 0.65, 7.54 ± 0.64) was notably higher than that of the uncoated group (1.08 ± 0.49, 2.59 ± 0.68), and control group (0.16 ± 0.09, 0.34 ± 0.18) at both time periods. Alizarin red staining in the Hya-coated PEEK group (1.81 ± 0.23, 1.97 ± 0.20) was significantly greater in comparison with uncoated group (1.12 ± 0.17, 1.14 ± 0.19) and control group (0.99 ± 0.10, 0.98 ± 0.05) at both time intervals.
Conclusion
Hya’s surface coating has enhanced the biofunctional properties of PEEK implant material, as demonstrated by improved cell survival, proliferation, differentiation, and mineralization potential.
{"title":"The impact of hyaluronic acid coating on polyether ether ketone dental implant surface: An in vitro analysis","authors":"Mohammed Aso Abdulghafor, Zanyar Mustafa Amin","doi":"10.1016/j.sdentj.2024.07.012","DOIUrl":"10.1016/j.sdentj.2024.07.012","url":null,"abstract":"<div><h3>Objective</h3><div>Polyether ether ketone (PEEK), a biocompatible polymer, is being explored as an alternative to metallic alloys for dental implants due to its aesthetic and mechanical properties. This study aimed to enhance the surface biofunctionality through evaluating human MG-63 osteoblastic cell survival, proliferation, differentiation, and mineralization.</div></div><div><h3>Method</h3><div>Following the sandblasting and plasma treatment of the 3D-printed PEEK discs, a layer of hyaluronic acid (Hya) was coated onto the PEEK surface. Osteoblast cells were seeded onto the discs. The groups consisted of Hya-coated PEEK, uncoated PEEK, and a control group. Cell viability, proliferation, differentiation, and mineralization potential were examined after seven and twenty-one days of cell seeding using the MTT test, DAPI staining technique, alkaline phosphatase activity (ALP), and alizarin red staining.</div></div><div><h3>Results</h3><div>Hya-coated PEEK increased cell viability (1.48 ± 0.13, 1.49 ± 0.09) compared to the uncoated group (1.19 ± 0.06, 1.26 ± 0.07) and control group (0.98 ± 0.04, 1.00 ± 0.07) after 7 and 21 days. Proliferation rates of coated group (60.50 ± 3.08) were greater than the uncoated (50.33 ± 2.58) and control group (38.33 ± 4.88) at 21 days, respectively. Additionally, the ALP activity on Hya-coated PEEK disks (5.55 ± 0.65, 7.54 ± 0.64) was notably higher than that of the uncoated group (1.08 ± 0.49, 2.59 ± 0.68), and control group (0.16 ± 0.09, 0.34 ± 0.18) at both time periods. Alizarin red staining in the Hya-coated PEEK group (1.81 ± 0.23, 1.97 ± 0.20) was significantly greater in comparison with uncoated group (1.12 ± 0.17, 1.14 ± 0.19) and control group (0.99 ± 0.10, 0.98 ± 0.05) at both time intervals.</div></div><div><h3>Conclusion</h3><div>Hya’s surface coating has enhanced the biofunctional properties of PEEK implant material, as demonstrated by improved cell survival, proliferation, differentiation, and mineralization potential.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1326-1332"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.sdentj.2024.08.012
Dalia E. Meisha , Amal Al-Khotani , Sultana A. Alhurishi , Moatazbellah M. Alruwaithi , Saud M. Orfali , Haila A. Al-Huraishi
Objective
At the beginning of the COVID-19 pandemic, it was recommended to provide emergency dental care and avoid aerosol-generating procedures (AGPs) when possible. This study aimed to determine how Saudi Arabian pediatric patients utilized emergency dental services at the national level at the beginning of the COVID-19 pandemic and what situations required an AGP.
Methods
Data was collected from all Ministry of Health dental facilities in Saudi Arabia between March and May 2020. All pediatric dental patients who received emergency dental care during the COVID-19 lockdown were included in this study.
Results
The majority of the 1,544 pediatric dental patients who received emergency dental care during this period received treatment for caries (77.9 %). AGPs were predominant in the treatment of urgent dental conditions (51.5 %). About 64 % of cases with pulpal inflammation and 52.4 % with abscesses underwent an AGP.
Conclusion
Emergency and urgent dental conditions were the main reason for seeking dental care during the pandemic (75.8 %), while only 24.2 % of cases were considered non-urgent. Despite the recommendations, AGPs were required for some urgent conditions to relieve the associated pain, and this comprised 46.8 % of dental treatment provided.
{"title":"Pattern of pediatric emergency dental care during COVID-19 pandemic in Saudi Arabia","authors":"Dalia E. Meisha , Amal Al-Khotani , Sultana A. Alhurishi , Moatazbellah M. Alruwaithi , Saud M. Orfali , Haila A. Al-Huraishi","doi":"10.1016/j.sdentj.2024.08.012","DOIUrl":"10.1016/j.sdentj.2024.08.012","url":null,"abstract":"<div><h3>Objective</h3><div>At the beginning of the COVID-19 pandemic, it was recommended to provide emergency dental care and avoid aerosol-generating procedures (AGPs) when possible. This study aimed to determine how Saudi Arabian pediatric patients utilized emergency dental services at the national level at the beginning of the COVID-19 pandemic and what situations required an AGP.</div></div><div><h3>Methods</h3><div>Data was collected from all Ministry of Health dental facilities in Saudi Arabia between March and May 2020. All pediatric dental patients who received emergency dental care during the COVID-19 lockdown were included in this study.</div></div><div><h3>Results</h3><div>The majority of the 1,544 pediatric dental patients who received emergency dental care during this period received treatment for caries (77.9 %). AGPs were predominant in the treatment of urgent dental conditions (51.5 %). About 64 % of cases with pulpal inflammation and 52.4 % with abscesses underwent an AGP.</div></div><div><h3>Conclusion</h3><div>Emergency and urgent dental conditions were the main reason for seeking dental care during the pandemic (75.8 %), while only 24.2 % of cases were considered non-urgent. Despite the recommendations, AGPs were required for some urgent conditions to relieve the associated pain, and this comprised 46.8 % of dental treatment provided.</div></div>","PeriodicalId":47246,"journal":{"name":"Saudi Dental Journal","volume":"36 10","pages":"Pages 1350-1356"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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