INBDE (Integrated National Board Dental Examination) Practice Exam

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What does MTA stimulate?

Secondary odontoblasts
Primary odontoblasts
Cementoblasts
MTA

The correct answer is: MTA

MTA, or mineral trioxide aggregate, stimulates the formation of secondary odontoblasts, which are cells responsible for dentin repair and regeneration. MTA also promotes the production of growth factors, such as TGF-B, that enhance the differentiation of stem cells into odontoblasts. Option A, primary odontoblasts, and option C, cementoblasts, are incorrect as MTA does not directly stimulate the production of these cells. However, MTA can indirectly stimulate cementoblasts through the promotion of secondary odontoblasts. Option B, primary odontoblasts, is incorrect as primary odontoblasts are not typically involved in the repair and regeneration of dentin. Therefore, the best answer is option D because MTA itself is the substance that stimulates the formation of secondary odontoblasts.