Supragingival calculus is 60% mineralized, subgingival calculus is 30% mineralized
A) First statement is true, second statement is false.
B) First statement is false, second statement is true.
C) Both statements are true.
D) Both statements are false.
D
Explanation: D) Subgingival calculus is about 60% mineralized, whereas supragingival calculus is only about 30% mineralized.
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