Premium
Effect of fibre‐reinforced composite on the fracture resistance of endodontically treated teeth
Author(s) -
Ozsevik Abdul Semih,
Yildirim Cihan,
Aydin Ugur,
Culha Emre,
Surmelioglu Derya
Publication year - 2016
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/aej.12136
Subject(s) - materials science , composite number , fracture (geology) , dentistry , orthodontics , composite material , medicine
Abstract The aim of this study is to evaluate the fracture resistance of root‐filled teeth restored with fibre‐reinforced composite (ever X posterior). Fifty mandibular molars were divided into five groups ( n = 10). Group 1: no treatment was applied (intact teeth). Group 2–5: canals were prepared and root filled. Group 2: no coronal restoration was placed. Group 3: teeth were coronally restored with composite. Group 4: composite restorations were performed following polyethylene fibre insertion at the cavity base. Group 5: composite resin placed over ever X posterior. After thermocycling (5–55°C, 5000×), fracture resistance was measured. Mean force load for each sample was recorded in N ewtons ( N ). Results were statistically analysed with one‐way analysis of variance and post hoc T ukey's tests. The mean force required to fracture samples and standard deviations are as follows: group 1: 2859.5 ± 551.27 N , group 2: 318.97 ± 108.67 N , group 3: 1489.5 ± 505.04 N , group 4: 1958.3 ± 362.94 N , group 5: 2550.7 ± 586.1 N . ever X posterior (group 5) was higher than groups 2, 3 and 4 ( P < 0.05). There were no significant differences between ever X posterior and intact teeth ( P > 0.05). Placing fibre‐reinforced composite under composite increased the fracture strength of root‐filled teeth to the level of intact teeth.