Subgingival calculus is always covered with dental plaque biofilm.The presence of subgingival calculus and plaque biofilm causes greater progression of periodontal disease than plaque biofilm alone.

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Quizplus · Accepted Answer

Both statements are true. Subgingival calculus serves as a reservoir for bacteria, contributing to the formation of dental plaque biofilm. The combination of subgingival calculus and plaque biofilm exacerbates the progression of periodontal disease more than plaque alone due to the increased bacterial load and the rough surface of calculus that facilitates further plaque accumulation.

Subgingival Calculus Is Always Covered with Dental Plaque Biofilm