Dental Adhesive Function — NDEB AFK MCQ
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Correct answer: C — To provide a micromechanical and chemical bond between the composite and tooth structure
Dental adhesive bonding agents create a bond between composite resin and tooth structure through micromechanical interlocking (resin tags in enamel; hybrid layer in dentin) and chemical interaction (ionic bonding with hydroxyapatite in some self-etch systems). The adhesive infiltrates the demineralised collagen network of acid-etched dentin to form the hybrid layer, which is the foundation of the dentin bond. The adhesive also acts as a coupling agent between hydrophilic dentin and hydrophobic resin composite.
Reference: Heymann – Sturdevant's Art and Science of Operative Dentistry, 7th ed., 2019