Which of the following etching pattern is optimal for bonding?
Correct Answer: Type 1
Description: Three types of etched patterns are noted. They are:
Type I: Etched enamel surface in which the center of enamel rods is dissolved with periphery intact
Type II: There is peripheral dissolution of enamel rods
Type III: It is a combination of the above two patterns
For optimum bond strength, Type I pattern is preferred.
Category:
Dental
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