Answer :
Final answer:
b) Pit and fissure sealants
Pit and fissure sealants are applied to the enamel surfaces before bonding orthodontic appliances to prevent decay by sealing out food and bacteria.
Explanation:
Before the bonding of orthodontic appliances, pit and fissure sealants are applied to appropriate enamel surfaces. These sealants are designed to fill in the tiny crevices on the surface of the teeth to prevent food and bacteria from getting trapped, thereby reducing the risk of decay. This preventive measure is particularly useful in orthodontic treatments to maintain oral hygiene, considering the complexity of cleaning teeth with braces or other appliances attached.
