en
Scientific article
Open access
English

Marginal adaptation, retention and fracture resistance of adhesive composite restorations on devital teeth with and without posts

Published inOperative dentistry, vol. 28, no. 2, p. 127-135
Publication date2003
Abstract

This in vitro study generated data on the quality of marginal adaptation, fracture resistance and retention of several indirect adhesive composite configurations on root-treated premolars before and after a long-term fatigue test and compared these results to a control group of adhesive onlays on "vital" teeth. Six root-treated extracted human premolars per group, with four different restorative configurations with and without adhesive fiber posts, were evaluated. Another group of six premolars, "revitalized" by using diluted horse serum to simulate pulpal fluid and restored with adhesive composite onlays, served as the control. Marginal adaptation before and after long-term occlusal loading (1,200,000 occlusal loading cycles at max 49 N) was assessed by using the replica technique and quantitative evaluation in SEM at 200x magnification. The number of lost restorations was recorded after loading. Fracture resistance and fracture patterns were evaluated by using a universal-testing machine on the fatigued samples. No significant differences (p > 0.05) between groups were detected before and after loading for the percentage of "continuous margin" at the total marginal length. Loading had a significant (p < 0.05) effect on the percentage of "continuous margin" for the total marginal length of two groups only. No significant difference (p > 0.05) for fracture resistance was detected and no lost restorations were observed. The results suggest that for both the less decayed and the more significantly decayed devital teeth, the minimally invasive adhesive restorative approach is promising.

Keywords
  • Analysis of Variance
  • Bicuspid
  • Bite Force
  • Composite Resins/chemistry
  • Dental Bonding
  • Dental Cavity Lining
  • Dental Marginal Adaptation
  • Dental Prosthesis Retention
  • Dental Restoration Failure
  • Dentin-Bonding Agents/chemistry
  • Glass Ionomer Cements/chemistry
  • Humans
  • Inlays
  • Microscopy
  • Electron
  • Scanning
  • Post and Core Technique/instrumentation
  • Replica Techniques
  • Resin Cements/chemistry
  • Surface Properties
  • Tooth
  • Nonvital/therapy
  • Weight-Bearing
Citation (ISO format)
KREJCI, Ivo et al. Marginal adaptation, retention and fracture resistance of adhesive composite restorations on devital teeth with and without posts. In: Operative dentistry, 2003, vol. 28, n° 2, p. 127–135.
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0361-7734
425views
59downloads

Technical informations

Creation23.02.2016 15:53:00
First validation23.02.2016 15:53:00
Update time15.03.2023 00:31:25
Status update15.03.2023 00:31:25
Last indexation16.01.2024 21:14:00
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack