Özet:

Background and aim:the aim of the present study was to evaluate the effect of using composite core materials on the in vitro fracture of endodontically treated teeth. Method:Databases of PubMed, Scopus, Web of Science, EBSCO and Embase were searched for systematic literature between 2012 to August 2021.  For Data extraction, two reviewers blind and independently extracted data from abstract and full text of studies that included.95% confidence interval for mean differences with fixed effect model and in-variance method were calculated. To deal with potential heterogeneity, random effects were used and I2 showed heterogeneity. Meta-analysis was performed using Stata/MP v.16 software (The fastest version of Stata). Result:In the initial review, duplicate studies were eliminated and abstracts of 126 studies were reviewed, the full text of 16 studies was reviewed by two authors, finally, five studies were selected. Mean differences of Fracture strength of endodontically treated teeth between intervention and control groupwas 8.40 (MD, 8.40 95% CI -31.93, 48.73). Conclusion: fracture resistanceof the treated root teeth in composite core build-up with higher filler content tends was much higher than the conventional composite resins.

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