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Effect of preparation design and endodontic access on fracture resistance of zirconia overlays in mandibular molars: An in vitro study.

Carlos Alberto JuradoKelvin Ian AfrashtehfarManuel RoblesRazan S AlaqeelyHussain D AlsayedTerry J LindquistAbdulaziz Alhotan
Published in: Journal of prosthodontics : official journal of the American College of Prosthodontists (2024)
The more extensive zirconia overlay for mandibular molars is the first choice since the 2 mm margin above the gingival level design withstood considerable loads even after undergoing endodontic access. A no-margin overlay is preferred over the 4-mm supragingival design as it preserves more tooth structure and there was no outcome difference, irrespective of endodontic access. Caution is warranted in interpreting these findings due to the in vitro nature of the study.
Keyphrases
  • mass spectrometry
  • high resolution
  • cone beam computed tomography
  • decision making
  • simultaneous determination