NDEB Virtual OSCE Practice Questions - NDEB Virtual OSCE Exam

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During placement of a posterior Class II composite restoration, the proximal box margin is located slightly subgingivally. Which step most effectively reduces moisture contamination and improves bond reliability at this margin?

Increasing the etch time to 60 seconds Using a high-copper amalgam instead Rubber dam isolation Switching to a self-cure glass ionomer base only

Correct Answer:

Rubber dam isolation

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