One bottle system of adhesive resins_____________?
Correct answer: A. Separate etching step is still required
- A. Separate etching step is still required
- B. Separate etching step not required
- C. 4th generation bonding agents
- D. Contains only primer
Explanation
A one-bottle adhesive combines primer and bonding resin, but in the conventional fifth-generation etch-and-rinse system a separate phosphoric-acid etching step is still required. It is therefore not a fourth-generation system or a primer-only bottle.
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