Bonding of composite resins to tooth structure is by________________?
Correct answer: C. Mechanical
- A. Covalent bond
- B. Ionic bond
- C. Mechanical
- D. Vanderval forces
Explanation
Composite resin retention to etched enamel and dentin is mainly micromechanical: resin penetrates surface irregularities and forms resin tags. It is not primarily a covalent or ionic bond with tooth structure.
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