Which sequence lists the first three steps of indirect bonding?

Which sequence lists the first three steps of indirect bonding?

• A. Etch teeth 30 seconds; rinse and dry; apply adhesive
• B. Rinse and dry; etch teeth 30 seconds; apply adhesive
• C. Etch teeth 30 seconds; apply adhesive; light cure
• D. Apply adhesive; light cure; insert bonding trays

Answer: (C)

The sequence starts by preparing the enamel surface to accept resin, then applying the bonding agent, and finally polymerizing that adhesive so the transfer tray can be seated with a stable bond. Etching the enamel for about 30 seconds creates microroughness that provides mechanical retention for the bonding resin. After that roughened surface is ready, applying adhesive coats the etched enamel and primes it for bonding with the indirect-bonding resin. Light curing then polymerizes the adhesive layer, giving a solid, tack-free surface that allows the bonding tray to be placed accurately and stay in position during seating. This order emphasizes establishing a cured adhesive layer before or during tray seating to ensure precise, stable placement of the indirect bond.