Australian Dental Council (ADC) Test 2026 – 400 Free Practice Questions to Pass the Exam

A finding of dark staining on a composite restoration can indicate potential problems that may necessitate replacement. Dark stains often suggest that there is underlying decay, leakage, or a failure in the bond between the composite material and the tooth structure. These issues can compromise the integrity of the restoration and potentially encourage further decay if not addressed. When a composite restoration shows significant dark staining, it may be a sign that it is no longer providing adequate protection for the tooth, thus signaling the need for replacement.

In contrast, light stains could be superficial and may not affect the integrity of the restoration, wear at the edges may be manageable without needing complete replacement, especially if the restoration remains functional, and a smooth surface generally indicates that the restoration is maintaining its integrity well. Therefore, while various factors can influence the decision to replace a restoration, dark staining is a clear indication that warrants further investigation and action.