{"title":"两种不同超快固化曝光持续时间对块状填充复合材料表面硬度的影响--体外研究。","authors":"Shekar Shobana, Anandavelu Sujareetha, Sundaresan Balagopal, Sarath Kumar, Sriganesh Angusamy, Sebatni Anisha","doi":"10.4103/ijdr.ijdr_5_23","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>The aim of the present study is to assess the microhardness of resin-based composites (RBCs) cured with ultrafast curing mode at two different exposure durations.</p><p><strong>Study design: </strong>This is an experimental in-vitro study. Forty-five cylindrical composite specimens were prepared to a dimension of 5 mm height and 4 mm diameter. Curing was done using three different exposure modes and duration with dual mode LED curing light as follows: Group I: Ultrafast curing mode for 1 second at 2300 mW/cm2 (n = 15); Group II: Ultrafast curing mode for 3 second at 2300 mW/cm2 (n = 15) and Group III: Standard exposure mode for 20 second at 1000 mW/cm2 (n = 15). Vicker's microhardness measurement was done on both the curing and non-curing sides of the specimen using a motorised diamond-faced micro-indenter (Wilson Wolpwert, Germany) using a load of 50 gram and a dwell time of 30 second.</p><p><strong>Statistical analysis: </strong>Kruskal Wallis ANOVA was used to test for difference between the three groups followed by Mann-Whitney U test for post-hoc analysis.</p><p><strong>Results: </strong>The microhardness values of the composite cured with a conventional curing unit were significantly higher than the ultrafast cured specimens.</p><p><strong>Conclusion: </strong>Low-intensity conventional curing lights were found to perform better than the high-intensity ultrafast curing units.</p>","PeriodicalId":13311,"journal":{"name":"Indian Journal of Dental Research","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Two Different Ultrafast Curing Exposure Durations on the Surface Hardness of Bulk Fill Composite - An In-Vitro Study.\",\"authors\":\"Shekar Shobana, Anandavelu Sujareetha, Sundaresan Balagopal, Sarath Kumar, Sriganesh Angusamy, Sebatni Anisha\",\"doi\":\"10.4103/ijdr.ijdr_5_23\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Aim: </strong>The aim of the present study is to assess the microhardness of resin-based composites (RBCs) cured with ultrafast curing mode at two different exposure durations.</p><p><strong>Study design: </strong>This is an experimental in-vitro study. Forty-five cylindrical composite specimens were prepared to a dimension of 5 mm height and 4 mm diameter. Curing was done using three different exposure modes and duration with dual mode LED curing light as follows: Group I: Ultrafast curing mode for 1 second at 2300 mW/cm2 (n = 15); Group II: Ultrafast curing mode for 3 second at 2300 mW/cm2 (n = 15) and Group III: Standard exposure mode for 20 second at 1000 mW/cm2 (n = 15). Vicker's microhardness measurement was done on both the curing and non-curing sides of the specimen using a motorised diamond-faced micro-indenter (Wilson Wolpwert, Germany) using a load of 50 gram and a dwell time of 30 second.</p><p><strong>Statistical analysis: </strong>Kruskal Wallis ANOVA was used to test for difference between the three groups followed by Mann-Whitney U test for post-hoc analysis.</p><p><strong>Results: </strong>The microhardness values of the composite cured with a conventional curing unit were significantly higher than the ultrafast cured specimens.</p><p><strong>Conclusion: </strong>Low-intensity conventional curing lights were found to perform better than the high-intensity ultrafast curing units.</p>\",\"PeriodicalId\":13311,\"journal\":{\"name\":\"Indian Journal of Dental Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Indian Journal of Dental Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/ijdr.ijdr_5_23\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/4/19 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"Dentistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Dental Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/ijdr.ijdr_5_23","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/4/19 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"Dentistry","Score":null,"Total":0}
Effect of Two Different Ultrafast Curing Exposure Durations on the Surface Hardness of Bulk Fill Composite - An In-Vitro Study.
Aim: The aim of the present study is to assess the microhardness of resin-based composites (RBCs) cured with ultrafast curing mode at two different exposure durations.
Study design: This is an experimental in-vitro study. Forty-five cylindrical composite specimens were prepared to a dimension of 5 mm height and 4 mm diameter. Curing was done using three different exposure modes and duration with dual mode LED curing light as follows: Group I: Ultrafast curing mode for 1 second at 2300 mW/cm2 (n = 15); Group II: Ultrafast curing mode for 3 second at 2300 mW/cm2 (n = 15) and Group III: Standard exposure mode for 20 second at 1000 mW/cm2 (n = 15). Vicker's microhardness measurement was done on both the curing and non-curing sides of the specimen using a motorised diamond-faced micro-indenter (Wilson Wolpwert, Germany) using a load of 50 gram and a dwell time of 30 second.
Statistical analysis: Kruskal Wallis ANOVA was used to test for difference between the three groups followed by Mann-Whitney U test for post-hoc analysis.
Results: The microhardness values of the composite cured with a conventional curing unit were significantly higher than the ultrafast cured specimens.
Conclusion: Low-intensity conventional curing lights were found to perform better than the high-intensity ultrafast curing units.
期刊介绍:
Indian Journal of Dental Research (IJDR) is the official publication of the Indian Society for Dental Research (ISDR), India section of the International Association for Dental Research (IADR), published quarterly. IJDR publishes scientific papers on well designed and controlled original research involving orodental sciences. Papers may also include reports on unusual and interesting case presentations and invited review papers on significant topics.