In general, what species are predominant in supragingival tooth-associated attached plaque?: (A) Gram-negative rods and cocci, (B) Gram-negative filaments, (C) Gram-positive filaments, (D) Gram-positive rods and cocci
Answer is D. Supragingival plaque is either tooth-associated or outer layer. Tooth-associated is composed primarily of gram-positive cocci and short rods.