Preventive Resin Restoration are indicated in
Preventive resin restoration (PRR) is a thin, resin coating applied to the deep pits and grooves or cavitated fissures of young permanent teeth. Simonsen in 1978 described this technique. In addition to restoring the caries, the remaining pits and fissueres are protected with sealants. PRR is also called as conservative adhesive resin restoration.
Depending on the extent and depth of the lesion, there are 3 types of PRR:
Type A- Suspicious pits and fissures where caries is limited to enamel.
Type B- Incipient lesion extending into dentin that is small and confined
Type C- Deep caries thereby requiring greater exploratory preparation in dentin.
Non cavitated pit and fissures
Deep caries to prevent progress of lesion
Cavitated fissures which require restoration
Wide cavity to prevent cusp fracture