Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials
Hussein, G., wagdy, N., nasser, M. (2020). Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials. EKB Journal Management System, 66(Issue 4 - October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)), 2563-2573. doi: 10.21608/edj.2020.40787.1230
Ghada abdelfattah Hussein; nourhan wagdy; mohamed nasser. "Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials". EKB Journal Management System, 66, Issue 4 - October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials), 2020, 2563-2573. doi: 10.21608/edj.2020.40787.1230
Hussein, G., wagdy, N., nasser, M. (2020). 'Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials', EKB Journal Management System, 66(Issue 4 - October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)), pp. 2563-2573. doi: 10.21608/edj.2020.40787.1230
Hussein, G., wagdy, N., nasser, M. Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials. EKB Journal Management System, 2020; 66(Issue 4 - October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)): 2563-2573. doi: 10.21608/edj.2020.40787.1230

Effect of Different Beaching Protocols on Biaxial Flexural Strength and Micro Hardness of Two Ceramic Materials

Egyptian Dental Journal
Article 14, Volume 66, Issue 4 - October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials), October 2020, Page 2563-2573  XML PDF (645.89 K)
Document Type: Original Article
DOI: 10.21608/edj.2020.40787.1230
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Authors
Ghada abdelfattah Hussein email orcid 1; nourhan wagdy2; mohamed nasser3
110 abo dawood el zahery st
2fixed prosothodontics departement faculty of dentistry ain shams university
3restorative departement. faculty of dentistry. Ainshams university
Abstract
Purpose: The aim of this study was to evaluate the effect of different bleaching protocols on biaxial flexural strength and micro hardness of two ceramic materials.
Material and Methods: A total of 112 discs, 56 discs of each material, were prepared from Celtra® Duo and VITA ENAMIC® with 10mm diameter and 1.2mm thickness. Each material was divided into 4 groups (n=14) according to the bleaching protocol done: Group 1 Control group “no bleaching”, Group 2 home bleaching “Carbamide Peroxide 22%”, Group 3 home bleaching “Hydrogen Peroxide 14%” and Group 4 In-office bleaching using diode Laser. For each material, half the number of discs in each group (n=7) were subjected to Biaxial Flexural Test using Universal Testing Machine Instron-3345 together with Instron BlueHill® universal software, while the other half was subjected to Micro-Hardness Test using Tukon™ 1102 Wilson® Hardness Tester. Data was represented by mean and standard deviation (SD) values. Two-way ANOVA was used to study the effect of different tested variables and their interaction on biaxial flexural strength (Mpa) and micro-hardness, The significance level was set at p ≤0.05 within all tests. Statistical analysis was performed with IBM® SPSS® Statistics Version 26 for Windows.
Results: For Biaxial Flexural Strength and Micro-hardness; Celtra duo samples had a significantly higher value than samples made with Vita Enamic for all bleaching groups.
Conclusion: Bleaching resulted in a significant diminution for both biaxial flexural strength and surface micro-hardness of Celtra Duo and Vita Enamic.
Keywords
bleaching techniques; laser bleaching Vitaenamic; Celtra Duo; flexural strength and Micro hardness
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