Which statement best describes the role of resin tags in bonding?

• A. Resin tags have no effect on bonding
• B. Resin tags provide micromechanical interlocking
• C. Resin tags cause corrosion
• D. Resin tags only affect color

Answer: (B)

Resin tags are resin filaments that penetrate the microscopic pores created on the tooth surface by bonding agents. When the adhesive infiltrates these spaces and hardens, the tags become physical anchors that extend into the dentin or enamel. This creates micromechanical interlocking between the resin and the tooth structure, which significantly enhances bond strength and durability by increasing the attachment area and providing a mechanical grip that resists debonding. They are not about corrosion or color change, and their primary function is to improve adhesion through mechanical retention; chemical bonding can also occur at the interface, but the resin tags specifically bolster the bond via interlocking at the microscopic level.