INBDE (Integrated National Board Dental Examination) 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1180

How does Bis-GMA function in dental adhesives?

By removing smear layer

By wettability of dentin

Chemically bonds to resin through MMA bonds

Bis-GMA functions in dental adhesives by chemically bonding to resin through MMA bonds. This is an important mechanism that ensures the stability and strength of the adhesive. Option A is incorrect because the removal of smear layer is not the primary role of Bis-GMA in dental adhesives. Option B is incorrect because while Bis-GMA may contribute to the wettability of dentin, it is not its main function. Similarly, option D is incorrect because although Bis-GMA can increase composite viscosity, it is not the main purpose of its use in dental adhesives. Therefore, option C is the most accurate and best explains how Bis-GMA functions in dental adhesives.

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Increases composite viscosity

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