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Marginal failures of amalgam and composite restorations
Journal of Dentistry
|January 1, 1997
Summary
Diagnosing secondary caries, particularly along the gingival margin, is crucial for determining the replacement of dental restorations. This study found secondary caries to be the primary reason for replacing amalgam and composite fillings.
Area of Science:
- Dental Materials Science
- Clinical Dentistry
- Restorative Dentistry
Background:
- Marginal failures in dental restorations are common.
- Secondary caries is a frequent complication leading to restoration replacement.
- Accurate diagnosis of marginal defects is essential for effective treatment planning.
Purpose of the Study:
- To clinically evaluate marginal failures in amalgam and composite restorations.
- To determine the primary causes of restoration replacement.
- To assess the diagnostic accuracy of secondary caries in marginal failures.
Main Methods:
- Clinical assessment of marginal defects in 235 amalgam and 193 composite restorations.
- Evaluation of restorations pre-operatively and post-removal.
- Comparison of pre-operative diagnoses with post-removal findings, specifically for secondary caries.
Main Results:
- Secondary caries was the most common reason for replacing both amalgam and composite restorations.
- Gingival margins were the predominant location for secondary caries.
- Pre-operative diagnoses showed good consistency with post-removal findings, though some false positives and negatives occurred.
Conclusions:
- Diagnosis of secondary caries at the outer lesion provides a reliable basis for treatment decisions.
- Effective management of marginal failures requires accurate identification of secondary caries.
- Understanding the prevalence and location of secondary caries aids in restorative dentistry.