Considerations for Altering Preparation Designs of Porcelain Inlay/Onlay Restorations for Nonvital Teeth

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Foudda HomsyJose Johann Chidiac

Abstract

The aim of this study was to compare all ceramic inlay/onlay survival rates in vital and nonvital teeth having the same cavity design. Filling the pulp chamber with ceramic materials or not was also discussed. Ceramic class II inlays/onlays were made on 11 premolars and 30 molars: 14 vital, 27 endodontically treated. The same tooth preparation design was performed on vital and nonvital teeth: In nonvital teeth the pulp chambers were covered by a glass ionomer cement until the pulpal floor depths were between 2 and 2.5 mm, more likely similar to the vital teeth preparations. In vital teeth, glass ionomer was used as a liner to achieve pulpal floor depths between 2 and 2.5 mm when needed. The restorations were assessed (at baseline, 6 months, 1 and 2 years) according to three criteria: marginal discoloration, marginal integrity, and fracture of teeth/restorations, consistent with United States Public Health Service (USPHS) criteria. Eight teeth (19%) showed minor marginal discolorations, while three molars (7%) had loss of marginal integrity. These margins were adjusted using rubber polishing cups and were then judged clinically acceptable. From these three molars, one was vital and two were endodontically treated. No fracture of...Continue Reading

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Citations

Aug 23, 2008·Dental Materials : Official Publication of the Academy of Dental Materials·Markus BalkenholBernd Wöstmann
Mar 14, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Hyung-In YoonSang J Lee

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