Laboratory Investigation of Fracture Resistance of Implant-Supported Fixed Denture with Different Connector Sizes in Zir/CAD/CAM

Heidari, Bijan and Izadi, Alireza and Firouz, Farnaz and Saleh, Amir and khazaei, Sara (2017) Laboratory Investigation of Fracture Resistance of Implant-Supported Fixed Denture with Different Connector Sizes in Zir/CAD/CAM. Journal of Mashhad Dental School, 41 (2). pp. 121-128.

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Abstract

Introduction: The effect of different connector sizes on all-ceramic systems is controversial. The aim of this investigation was to evaluate the effects of different connector sizes on fracture resistance of zirconium oxide posterior bridges. Materials & Methods:      In this experimental�laboratory study, 24 posterior zirconia bridges and eight posterior metal-ceramic implant-supported bridges (control group) were manufactured by CAD/CAM software to replace a second premolar. The specimens were divided into four groups, each with a different connector size. After one day storing in artificial saliva and applying thermal cycling, the fracture load in specimens was measured. Tukey HSD and ANOVA were used for data analysis. Results:The mean fracture resistance of the metal-ceramic group was significantly higher than the all-ceramic groups. In Zir/CAD/CAM groups, the mean fracture resistance of the group with 4�4 mm connector size was significantly higher compared to the groups with 3�3 mm and 2�3 mm connector sizes. Conclusion: The mean fracture load values of zirconia specimens were significantly affected by connector size.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 19 Sep 2017 14:08
Last Modified: 19 Sep 2017 14:08
URI: http://eprints.mums.ac.ir/id/eprint/1084

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