Comparative Evaluation of Fracture Resistance in Endodontically Treated Posterior Teeth Restored With Endocrowns Versus Conventional Post and Core Followed by a Full Crown: An In Vitro Study
In vitro study compares fracture resistance in endodontically treated teeth restored with endocrowns and conventional post-core-crowns, suggesting clinical implications.
Key Points
This study aims to compare the fracture resistance and failure modes of endodontically treated molars restored with endocrowns versus post-core-crowns.
Conducted an in vitro study using extracted mandibular first molars.
Randomly assigned 60 molars to two groups: endocrowns and post-core-crowns.
All specimens cemented with dual-cure resin; tested under compressive load using a universal testing machine.
Fracture load and failure mode were recorded and analyzed statistically.
Endocrowns showed a mean fracture resistance of 1250.45 N, while post-core-crowns had 1180.20 N, with no significant difference.
Endocrown failures were primarily favorable and restorable, while post-core-crown failures were often unfavorable, including root fractures.
Endocrowns displayed better stress distribution, contributing to a lower risk of catastrophic fractures.