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Title: Which of the following reasons explains why subgingival calculus is usually black? Post by: WENLiu on Jan 27, 2018 Which of the following reasons explains why subgingival calculus is usually black?
A) Supragingival saliva B) Crevicular fluid C) Subgingival enzymes D) Salivary crystals Title: Which of the following reasons explains why subgingival calculus is usually black? Post by: csaenz4 on Jan 27, 2018 B
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