ÜÇ FARKLI POST SİSTEMİNİN AĞIZ İÇİNDE OLUŞABİLECEK KUVVETLERE KARŞI DAYANCININ İN VİTRO DEĞERLENDİRİLMESİ

Background: In order to ensure sufficient resistance against functional forces for dentin, which is severely weakened by excessive material loss in single-root single-canal teeth with previous root canal treatment, maximum retention and must be the target. The main purpose of this study evaluate shear rupture chosen three kinds posts placed roots, that could occur replicated mouth. Methods: Freshly extracted 45 -maxillary canin maxillary central- have been used our study. Crown portion tooth was removed cutting away 1 mm over enamel cement junction. Root canals were obturated a lateral condensation technique using AH-26 gutta percha sealer. study, 15 specimens each from Flexi-Post, Cosmopost, FRC Postec post systems sockets opened down through specific burs system. A dual cured composite (Variolink II low viscosity) bind posts. Prepared put steel hose acrylic resin. Standardized core (Coradent) applied onto top side posts, hoses connected Lloyd test instrument an angle degrees. force speed mm/min specimens. Compression values recorded One Way ANOVA Kruskall-Wallis variance analyses conducted statistical evaluation. Results Conclusion: Highest obtained Flexi-Post group. second, Cosmopost had lowest strength values. However, all provided adequate mouth, hence it concluded they can utilized clinically. Key words: cores, system, prefabricated