JResDent23144-4459922_122319.pdf

144 • Journal of Restorative Dentistry / Vol - 2 / Issue - 3 / Sep-Dec 2014 Comparison of fracture resistance of endodontically treated teeth with MOD cavity using different techniques of fiber insertion Ömer Kırmah, Onur Şahin 1 , Fatma Aytaç 2 , Fatih Sarı 3 , Faik Tuğut 4 , Alper Kuştarcı 5 Departments of Prosthodontics, and 5 Endodontics, Faculty of Dentistry, Akdeniz University, Antalya, 1 Department of Prosthodontics, Faculty of Dentistry, Bulent Ecevit University , Zonguldak, 2 Department of Restorative Dentistry, Faculty of Dentistry, Gaziosmanpasa University , Tokat, 3 Department of Prosthodontics, Faculty of Dentistry, Gaziantep University, Gaziantep, 4 Department of Prosthodontics, Faculty of Dentistry, Cumhuriyet University , Sivas, Turkey Address for correspondence: Dr. Ömer Kırmalı, Depar tments of Prosthodontics, Faculty of Dentist ry, Akdeniz University, Antalya, T urkey . E-mail: [email protected] INTRODUCTION The teeth with healthy pulps are more resistant to fracture than endodontically treated teeth because of reduced dentinal elasticity, substantial loss of dentine, [1] and lower water content. [2,3] The loss of anatomical structures due to caries and tooth preparation is the key reason for the fracture. [4] An ideal restoration for these teeth is able to preserve the remaining tooth structure, maintain the aesthetics and function, and prevent the microleakage. Following endodontic treatment, full cast crown restorations, [5,6] complex amalgam restorations, [7,8] composite materials, or aesthetic restorations for inlays/onlays (composites/ceramics) can be used for nal restorations. Bonding systems, restorative materials, and conservative preparation techniques continue to evolve. The use of direct composite restoration in posterior teeth has Objectives: The purpose of this study was to evaluate the effect of ber by using different techniques on fracture resistance of endodontically treated molars with mesio‑occlusal‑distal (MOD) cavities. Materials and Methods: Forty extracted human molars were randomly assigned to four gro ups (n = 10). T eeth in Groups 2‑4 received root canal treatment and a MOD cavity preparation. Group 1 served as control. Group 2 was restored with composite resin. In Group 3, the ber was inserted into the cavities in buccal to lingual direction by coating the occlusal one-third of the buccal wall to the occlusal one-third of the lingual wall, and lastly, the teeth were restored with composite resin. In Group 4, the owable resin was coated inside the cavities with the ber, as Group 3 was before restoring teeth with composite resin. Compressive loading of the teeth was performed at a cross-head speed of 0.5 mm/min. Data were analyzed u sing one‑way ANOVA and Tukey post‑hoc tests. Results: Fracture resistance values of all the groups were compared; the differences between Groups 2 and 3 or Groups 2 and 4 were found to be statistically signican t. Conclusions: As a result, use of the ber under composite resin with a owable resin increased fracture strength to MOD cavities. Key words: Endodontically treated, ber, fracture resistance, mesio-occlusal-di stal preparation Original Article Access this article online Quick Response Code: Website: www.jresdent.org DOI: 10.4103/2321-4619.143598 ABSTRACT [Downloaded free from http://www.jresdent. org on Thursday, September 10, 2015, IP: 139.0.112.23]

JResDent23144-4459922_122319.pdf

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