Estimation of the Risk of Failure for an Endodontically Treated Maxillary Premolar With MODP Preparation and CAD/CAM Ceramic Restorations

Chun Li Lin*, Yen Hsiang Chang, Che An Pa

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

48 Scopus citations

Abstract

Introduction: This study evaluated the risk of failure for an endodontically treated premolar with mesio occlusodistal palatal (MODP) preparation and 3 different computer-aided design/computer-aided manufacturing (CAD/CAM) ceramic restoration configurations. Methods: Three 3-dimensional finite element (FE) models designed with CAD/CAM ceramic onlay, endocrown, and conventional crown restorations were constructed to perform simulations. The Weibull function was incorporated with FE analysis to calculate the long-term failure probability relative to different load conditions. Results: The results indicated that the stress values on the enamel, dentin, and luting cement for endocrown restoration were the lowest values relative to the other 2 restorations. Weibull analysis revealed that the individual failure probability in the endocrown enamel, dentin, and luting cement obviously diminished more than those for onlay and conventional crown restorations. The overall failure probabilities were 27.5%, 1%, and 1% for onlay, endocrown, and conventional crown restorations, respectively, in normal occlusal condition. Conclusions: This numeric investigation suggests that endocrown and conventional crown restorations for endodontically treated premolars with MODP preparation present similar longevity.

Original languageEnglish
Pages (from-to)1391-1395
Number of pages5
JournalJournal of Endodontics
Volume35
Issue number10
DOIs
StatePublished - 10 2009

Keywords

  • Endocrown
  • Weibull analysis
  • endodontically treated premolar
  • failure probability
  • finite element analysis

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