American Board of General Dentistry (ABGD) Practice Exam

The correct answer emphasizes that prepared surfaces typically yield higher bond strengths. This is grounded in the fundamental principles of bonding in dentistry and materials science.

Surface preparation involves cleaning, etching, or roughening surfaces to increase surface area and enhance mechanical interlocking between the materials. A well-prepared surface removes contaminants, debris, and creates a micro-topography that significantly contributes to the strength of the bond achieved. This is particularly relevant when dental adhesives are applied to enamel or dentin, as prepared surfaces allow for better penetration and a more intimate contact between the adhesive and the tooth structure.

As a result, the increase in surface area and the proper micro-structuring combined with effective adhesion chemistry produces a more robust and durable bond. Therefore, it is crucial in clinical practice to emphasize proper surface preparation for optimal bond strength in restorative procedures. Proper techniques lead to improved clinical outcomes and longevity of dental restorations.