What are the reasons for the failure of posterior dental restorations?
This summary is based on the article published in the European Journal of Oral Sciences: Longevity of posterior dental restorations and reasons for failure (December 2012)
Context and Purpose of the Study
- Tooth-coloured restorative materials are being used increasingly more often in Class II preparations in permanent teeth.
- The authors used a practice-based study design to assess the survival time of Class II restorations and to identify factors relevant to their longevity.
- In this practice-based study, amalgam restorations showed significantly better longevity than resin composite.
- Secondary caries were the most common reason for replacing resin-composite restorations.
- Failure of the resin-composite restorations was significantly related to the patient’s young age, the patient’s high previous caries experience, large cavity depth, use of saucer-shaped preparation technique, and Filtek Z100 as the resorative material.
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