The Effect of Bioceramic Sealers on the Fracture Resistance of Endodontically Treated Teeth (In Vitro Study)

Abstract

This study aimed to evaluate the effect of bioceramic sealers on the fracture resistance of endodontically treated teeth compared to resin-based sealers and zinc oxide and eugenol based sealers. Methods: Seventy (n=70) freshly human extracted single rooted teeth were selected. The samples were biomechanically prepared and classified according to the type of the sealer used into four groups as follows; Group 1 (n=21) obturated with gutta-percha and Endofill sealer (Dentsply, Germany). Group 2 (n=21) obturated with gutta-percha and AD-seal sealer (Meta Biomed, Korea). Group 3 (n=21) obturated with gutta-percha and MTA filapex sealer (Angelus, Brazil). Group 4 (n=7) Control group (unobturated). All samples were kept in saline until evaluation. The samples were further classified according to the observation time into: subgroup A (n=7) evaluated after one week, subgroup B (n=7) evaluated after two weeks and subgroup C (n=7) evaluated after one month. Samples were loaded vertically after obturation using Universal Testing Machine until fracture. Results: MTA filapex group showed higher fracture resistance values than the other groups with no significant difference. No significant difference was found between the subgroups evaluated at different time intervals. Conclusion: Neither the type of root canal sealer nor the time lapsed affects fracture resistance significantly.

Evaluation of Fracture Resistance of Bioceramic sealer with C points with and without laser activation (An In-vitro study)

“…Furthermore, bioceramic sealer has slow setting and when it is combined with the sluggish expansion of C-points when subjected to moisture, may have possibly pushed the sealer into spaces AH Plus sealer with gutta-percha could not reach (26) . This came in agreement with Nagas et al (25) , Patil et al (27) and Elfaramawy and Abdelrahman (28) who reported that the calcium silicate composition of bioceramic sealer helps in minimizing contraction during the setting procedure. Also, its bonding effectiveness to root canal dentin might be due to the extremely small particle size and the low level of viscosity of bioceramic sealer which improves its flow.…”