Author/Editor		Jovanovski, Sašo; Cotič, Jasna; Kocjan, Andraž; Oblak, Čedomir; Jevnikar, Peter
Title		Fracture resistance of endodontically treated maxillary incisors restored with zirconia posts
Type		članek
Publication year		2018
Volume		str. str.
ISSN		1743-6753 - Advances in Applied Ceramics: Structural, Functional & Bioceramics
Language		eng
Abstract		We report on a new approach to increase the fracture resistance of endodontically treated teeth. We propose a preparation of horizontal internal plateau (IP) in dentine and the use of retentive zirconia posts to achieve a more favourable load transmission. The aim of our work was to investigate the effect of the IP depth and the post diameter on the fracture resistance and the failure mode of maxillary central incisors. Seventy-two teeth were, divided into six groups of 12. IP 4 mm in diameter and 0, 1 or 2 mm in depth was prepared and zirconia posts of two diameters luted. Specimens were loaded until failure and fractures were classified as reparable or not. Two-way ANOVA, Tukey%s HSD test and Poisson regression were used for statistical analysis (% = 0.05). Significantly improved fracture resistance and predominantly favourable failure modes were found when 2-mm deep IP is prepared.
Keywords		zirconia ceramics root canal preparation fracture resistance cirkonij keramika priprava koreninskih kanalov odpornost proti zlomom