{"title":"二类修复体中大量填充与传统树脂基复合材料的效率对比：牙科学生的视角","authors":"Doaa R.M. Ahmed , Reema Alhaniny , Safa Alyousef , Moustafa Aboushelib , Abdulaziz Samran","doi":"10.1016/j.sdentj.2024.08.004","DOIUrl":null,"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":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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\":null,\"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\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Saudi Dental Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1013905224002347\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Saudi Dental Journal","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1013905224002347","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Efficiency of bulk-fill versus conventional resin-based composite in class II restorations: A dental student perspective
Purpose/objectives
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.
期刊介绍：
Saudi Dental Journal is an English language, peer-reviewed scholarly publication in the area of dentistry. Saudi Dental Journal publishes original research and reviews on, but not limited to: • dental disease • clinical trials • dental equipment • new and experimental techniques • epidemiology and oral health • restorative dentistry • periodontology • endodontology • prosthodontics • paediatric dentistry • orthodontics and dental education Saudi Dental Journal is the official publication of the Saudi Dental Society and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
