Fracture resistance of endodontically treated teeth restored with bulk-fill materials at different depths in root canals

Main Article Content

Panuwat Seekongpan
Chayada Teanchai
Pong Pongprueksa
Pisol Senawongse

Abstract

Objective: This study aims to compare fracture resistance of endodontically treated teeth restored with different bulk-fill materials as core materials and with different depths into the root canals. 


Materials and Methods: Endodontically treated teeth with mesio-occluso-distal (MOD) cavities were prepared from extracted premolar teeth and divided into 3 experimental groups and 1 positive control group without any restorations. The teeth in experimental groups were divided into 2 subgroups according to the depth of gutta percha removal (1: the level of cemento-enamel junction (CEJ), and 2: the level of 3 mm-below CEJ). The teeth were then restored with an ClearfilTM SE bond in combination with one of the following materials; light-curing bulk-fill materials: Ever-X posterior or SDR flow, or a self-curing core material: Multicore flow, and finally restored the top layer by Filtek Z350XT. The intact teeth were used as a negative control. All specimens were subjected to fracture resistance testing.


Results: The highest fracture resistance was observed in the negative control group (1438.83 ± 224.11N). No statistically significant differences were found between the group restored with bulk-fill materials (p>0.05) except between the group restored with the Multicore flow at CEJ and the group restored with Multicore flow below the level of 3 mm-below CEJ (p=0.028). The lowest fracture resistance value was found in the positive control group (298.16 ± 62.67N).


Conclusion: The restorations of endodontically treated teeth with light-curing bulk-fill materials could improve fracture resistance which was less than the fracture resistance of intact teeth.

Article Details

How to Cite
1.
Seekongpan P, Teanchai C, Pongprueksa P, Senawongse P. Fracture resistance of endodontically treated teeth restored with bulk-fill materials at different depths in root canals. M Dent J [Internet]. 2022 Jul. 6 [cited 2024 Mar. 29];42(suppl):S15-S24. Available from: https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/257837
Section
Oral Presentation(MDRD2024)

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