{"title":"不同树脂义齿基托材料弹性模量的比较研究","authors":"A. Sherif, Mohamed Helal, Y. Baraka","doi":"10.21608/ajdsm.2021.78808.1204","DOIUrl":null,"url":null,"abstract":"Objective: The objective of this in vitro study was to compare modulus of elasticity of CAD /CAM milled, 3D printed and flexible pressed resins. Materials and Methods: eighteen rectangular specimens with specific measurement (65mm X 10mm X 3 mm) were constructed from different resin denture base materials and divided into 3 groups (6 specimens for each group). Group I contained the CAD/CAM milled resin specimens, Group II contained 3D printed specimens and Group III contained polyamide flexible resin. The specimens were evaluated by the three-point bending test on universal testing machine (INSTRON) to calculated modulus of elasticity. Data was analyzed with ANOVA and Tukey’s pair-wise post-hoc tests. Results: The modulus of elasticity values of all groups ranged from 845.5 MPa to 2962.3 MPa. There were significant differences among the tested resin denture base materials. CAD/CAM milled materials had the highest modulus of elasticity, while the polyamide pressed materials had the lowest. The 3D-printed acrylics materials had lower modulus of elasticity values than CAD/CAM milled materials. Conclusion: The CAD/CAM milled and 3D printed denture base resins showed higher modulus of elasticity when evaluated with polyamide pressed materials.","PeriodicalId":117944,"journal":{"name":"Al-Azhar Journal of Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modulus of Elasticity of Different Resin Denture Base Materials: A Comparative Study\",\"authors\":\"A. Sherif, Mohamed Helal, Y. Baraka\",\"doi\":\"10.21608/ajdsm.2021.78808.1204\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Objective: The objective of this in vitro study was to compare modulus of elasticity of CAD /CAM milled, 3D printed and flexible pressed resins. Materials and Methods: eighteen rectangular specimens with specific measurement (65mm X 10mm X 3 mm) were constructed from different resin denture base materials and divided into 3 groups (6 specimens for each group). Group I contained the CAD/CAM milled resin specimens, Group II contained 3D printed specimens and Group III contained polyamide flexible resin. The specimens were evaluated by the three-point bending test on universal testing machine (INSTRON) to calculated modulus of elasticity. Data was analyzed with ANOVA and Tukey’s pair-wise post-hoc tests. Results: The modulus of elasticity values of all groups ranged from 845.5 MPa to 2962.3 MPa. There were significant differences among the tested resin denture base materials. CAD/CAM milled materials had the highest modulus of elasticity, while the polyamide pressed materials had the lowest. The 3D-printed acrylics materials had lower modulus of elasticity values than CAD/CAM milled materials. Conclusion: The CAD/CAM milled and 3D printed denture base resins showed higher modulus of elasticity when evaluated with polyamide pressed materials.\",\"PeriodicalId\":117944,\"journal\":{\"name\":\"Al-Azhar Journal of Dental Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Al-Azhar Journal of Dental Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21608/ajdsm.2021.78808.1204\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Al-Azhar Journal of Dental Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21608/ajdsm.2021.78808.1204","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
目的:比较CAD /CAM铣削、3D打印和柔性压制树脂的弹性模量。材料与方法:采用不同的树脂义齿基托材料制作尺寸为65mm X 10mm X 3mm的长方形标本18个,分为3组(每组6个)。第一组为CAD/CAM铣削树脂试件,第二组为3D打印试件,第三组为聚酰胺柔性树脂试件。在万能试验机(INSTRON)上进行三点弯曲试验,计算试件的弹性模量。数据分析采用方差分析和Tukey’s成对事后检验。结果:各组的弹性模量在845.5 MPa ~ 2962.3 MPa之间。不同树脂义齿基托材料间存在显著性差异。CAD/CAM铣削材料的弹性模量最高,聚酰胺压制材料的弹性模量最低。3d打印丙烯酸材料的弹性模量低于CAD/CAM铣削材料。结论:CAD/CAM研磨和3D打印的义齿基托树脂与聚酰胺压制材料相比具有更高的弹性模量。
Modulus of Elasticity of Different Resin Denture Base Materials: A Comparative Study
Objective: The objective of this in vitro study was to compare modulus of elasticity of CAD /CAM milled, 3D printed and flexible pressed resins. Materials and Methods: eighteen rectangular specimens with specific measurement (65mm X 10mm X 3 mm) were constructed from different resin denture base materials and divided into 3 groups (6 specimens for each group). Group I contained the CAD/CAM milled resin specimens, Group II contained 3D printed specimens and Group III contained polyamide flexible resin. The specimens were evaluated by the three-point bending test on universal testing machine (INSTRON) to calculated modulus of elasticity. Data was analyzed with ANOVA and Tukey’s pair-wise post-hoc tests. Results: The modulus of elasticity values of all groups ranged from 845.5 MPa to 2962.3 MPa. There were significant differences among the tested resin denture base materials. CAD/CAM milled materials had the highest modulus of elasticity, while the polyamide pressed materials had the lowest. The 3D-printed acrylics materials had lower modulus of elasticity values than CAD/CAM milled materials. Conclusion: The CAD/CAM milled and 3D printed denture base resins showed higher modulus of elasticity when evaluated with polyamide pressed materials.