دورية أكاديمية
Microstructural and mechanical analysis of two CAD-CAM lithium disilicate glass-reinforced ceramics.
| العنوان: | Microstructural and mechanical analysis of two CAD-CAM lithium disilicate glass-reinforced ceramics. |
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| المؤلفون: | Tavares LDN; Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Occlusion, Fixed Prosthesis and Dental Materials, Uberlândia, MG, Brazil., Zancopé K; Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Occlusion, Fixed Prosthesis and Dental Materials, Uberlândia, MG, Brazil., Silva ACA; Universidade Federal de Uberlândia - UFU, Physics Institute, Laboratory of New Insulating and Semiconductor Materials, Uberlândia, Minas Gerais, Brazil., Raposo LHA; Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Occlusion, Fixed Prosthesis and Dental Materials, Uberlândia, MG, Brazil., Soares CJ; Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Operative Dentistry and Dental Materials, Uberlândia, MG, Brazil., Neves FDD; Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Occlusion, Fixed Prosthesis and Dental Materials, Uberlândia, MG, Brazil. |
| المصدر: | Brazilian oral research [Braz Oral Res] 2020 Jan 31; Vol. 34, pp. e004. Date of Electronic Publication: 2020 Jan 31 (Print Publication: 2020). |
| نوع المنشور: | Evaluation Study; Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Sociedade Brasileira de Pesquisa Odontológica Country of Publication: Brazil NLM ID: 101307187 Publication Model: eCollection Cited Medium: Internet ISSN: 1807-3107 (Electronic) Linking ISSN: 18068324 NLM ISO Abbreviation: Braz Oral Res Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: São Paulo, SP : Sociedade Brasileira de Pesquisa Odontológica |
| مواضيع طبية MeSH: | Computer-Aided Design*, Ceramics/*chemistry , Dental Porcelain/*chemistry , Glass/*chemistry, Analysis of Variance ; Dental Bonding/methods ; Flexural Strength ; Materials Testing ; Microscopy, Electron, Scanning ; Porosity ; Reference Values ; Reproducibility of Results ; Resin Cements/chemistry ; Shear Strength ; Surface Properties ; X-Ray Diffraction |
| مستخلص: | The aim of this study was to analyze the structural, morphological and mechanical properties of two different lithium disilicate glass-reinforced ceramics for CAD-CAM systems (IPS e.max CAD and Rosetta SM). Five methodologies were used for both ceramics: microstructure (n = 2) was analyzed using x-ray diffraction (XRD); morphological properties (n = 2) were analyzed by scanning electron microscopy (SEM), with and without hydrofluoric etching; porosity (n = 3) was assessed using 3D micro-computed tomography (micro-CT); flexural strength was measured (n =1 0) using the three-point bending test; and bond strength was determined with self-adhesive resin cement (n = 10), using a microshear bond test. After performing all the tests, the data were analyzed using t-Student test and two-way ANOVA. All the tests used a significance level of α = 0.05. High peak positions corresponding to standard lithium metasilicate and lithium disilicate with similar intensities were observed for both ceramics in the XRD analysis. Morphological analysis showed that the crystalline structure of the two ceramics studied showed no statistical difference after acid etching. Additionally, no significant differences were recorded in the number or size of the pores for the ceramics evaluated. Moreover, no differences in flexural strength were found for the ceramic materials tested, or in the bond strength to ceramic substrates for the resin cements. Based on the study results, no significant differences were found between the two CAD-CAM lithium disilicate glass-reinforced ceramics tested, since they presented similar crystalline structures with comparable intensities, and similar total porosity, flexural strength and bond strength. |
| المشرفين على المادة: | 0 (Resin Cements) 0 (lithia disilicate) 12001-21-7 (Dental Porcelain) |
| تواريخ الأحداث: | Date Created: 20200206 Date Completed: 20200220 Latest Revision: 20200220 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1590/1807-3107bor-2020.vol34.0004 |
| PMID: | 32022223 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1807-3107 |
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| DOI: | 10.1590/1807-3107bor-2020.vol34.0004 |