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Review
. 2021 Jul 9;13(14):2251.
doi: 10.3390/polym13142251.

Effect of Composite Core Materials on Fracture Resistance of Endodontically Treated Teeth: A Systematic Review and Meta-Analysis of In Vitro Studies

Maciej Zarow  1 , Marzena Dominiak  2 , Katarzyna Szczeklik  3 , Louis Hardan  4 , Rim Bourgi  4 , Carlos Enrique Cuevas-Suárez  5 , Juan Eliezer Zamarripa-Calderón  5 , Naji Kharouf  6 , Dimitar Filtchev  7
Affiliations
Review

Effect of Composite Core Materials on Fracture Resistance of Endodontically Treated Teeth: A Systematic Review and Meta-Analysis of In Vitro Studies

Maciej Zarow et al. Polymers (Basel). .

Abstract

Various material properties are involved in the success of endodontically treated restorations. At present, restorative composites are commonly employed as core build-up materials. This study aimed to systematically review the literature to assess the effect of using composite core materials on the in vitro fracture of endodontically treated teeth. Two different reviewers screened the literature, up to June 2021, in five distinct electronic databases: PubMed (MedLine), Scopus, Scielo, ISI Web of Science, and EMBASE. Only in vitro studies reporting the effect of the use of composite core materials on the fracture resistance of endodontically treated teeth were included. A meta-analysis was carried out using a software program (Review Manager v5.4.1; The Cochrane Collaboration, Copenhagen, Denmark). The risk of bias in each study was assessed following the parameters of another systematic review. A total of 5016 relevant papers were retrieved from all databases. After assessing the title and abstract, five publications remained for qualitative analysis. From these, only three studies remained for meta-analysis. The fracture strength of endodontically treated teeth where a core build-up composite was used was statistically significantly higher than the control (p = 0.04). Most of the analyses showed a high heterogenicity. The in vitro evidence suggests that the composite core build-up with higher filler content tended to improve the fracture resistance of the endodontically treated teeth, in comparison with conventional composite resins. This research received no external funding. Considering that this systematic review was only carried out on in vitro papers, registration was not performed. Furthermore, there were no identified clinical studies assessing core build-up materials; therefore, more well-designed research on these materials is needed.

Keywords: composite core material; composite resin; dentistry; endodontically treated tooth; fracture resistance; restoration.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Prisma flow diagram of the study.
Figure 2
Figure 2
Results of the meta-analysis of the fracture strength of endodontically treated teeth, restored with a core-build up composite or a conventional composite. Fracture strength was higher when the endodontically treated teeth were restored with a core-build up composite (p = 0.04).
See this image and copyright information in PMC

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