Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures
Shakal, M., Oraby, H. (2018). Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures. EKB Journal Management System, 64(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), 1499-1505. doi: 10.21608/edj.2018.77465
Mahmoud Abdel Salam Shakal; Hany Aboulfotouh Abdelmohsen Oraby. "Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures". EKB Journal Management System, 64, Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), 2018, 1499-1505. doi: 10.21608/edj.2018.77465
Shakal, M., Oraby, H. (2018). 'Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures', EKB Journal Management System, 64(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)), pp. 1499-1505. doi: 10.21608/edj.2018.77465
Shakal, M., Oraby, H. Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures. EKB Journal Management System, 2018; 64(Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics)): 1499-1505. doi: 10.21608/edj.2018.77465

Comparative Flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures

Egyptian Dental Journal
Article 12, Volume 64, Issue 2 - April (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), April 2018, Page 1499-1505  XML PDF (865.17 K)
Document Type: Original Article
DOI: 10.21608/edj.2018.77465
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Authors
Mahmoud Abdel Salam Shakal1; Hany Aboulfotouh Abdelmohsen Oraby2
1Assistant professor of Fixed Prosthodontics, Department of Fixed Prosthodontics, Faculty of Dentistry, University of Tanta, Egypt
2Lecturer of Fixed Prosthodontics, Department of Fixed Prosthodontics, Faculty of Dentistry, University of Tanta, Egypt
Abstract
Objectives: The purpose of this study was to evaluate the flexural strength of two types of monolithic zirconium oxide long-span fixed partial dentures (FPDs). The monolithic materials used in the study were (InCoris TZI C and Bruxzir shaded 16). Readily prepared ivory teeth were used to simulate a 4-unit FPD with 22 mm span length. A total number of 40 FPDs 4 units FBDs were distributed into two main groups based on the construction material type, each counting 20 FPDs. Twenty FPDs were fabricated using InCoris TZI C (group 1) and the other twenty FBDs were fabricated using Bruxzir shaded 16 (group 2). FPDs were manufactured according to CAD/CAM technique. All specimens were stored in water for 24 hours and then subjected to 10,000 thermal cycles then mechanically loaded for 10.000 preloading cycles at loads between minimum 10 N and maximum 89N at 1HZ frequency. and then loaded until failure in a universal testing machine. The 3-point bending test was done to evaluate the flexural strength of the FPDs using Instron testing machine. Results. Bruxzir shaded 16 has recorded the highest mean of values at a level of (928.55 Mpa± 66.13), while those recorded for InCoris TZI C group of specimens were at the level of (845.21 Mpa±83.54). T-test revealed a highly statistical significant difference between both tested monolithic zirconia materials at the value level of P<0.001.
Keywords
Bruxzir shaded 16; InCoris TZI C; flexural strength; long-span FPDs
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