Materials & Methods: The present study was conducted on 48 patients of both genders (Males- 28, Females- 20). Two techniques were used in different selected teeth. In group I (24), mandibular permanent first molar of both sides was treated by acid etching alone while in group II (24), mandibular permanent second molar of both sides was pretreated by with air abrasion followed by acid etching.

Results: Out of 48 patients, males were 28 and females were 20. After 3 months, completely retained sealants was observed in 32 in group I and 29 in group II, partially in 12 in group I and 14 in group II and missing in 4 in group I and 5 in group II. The difference was non- significant (P> 0.05). After 6 months, sealants were completely present in 28 in group I and 26 in group II, partially in 14 in group I and 12 in group II and missing in 6 in group I and 10 in group II. The difference was non- significant (P> 0.05).

Conclusion: Pit and fissure sealants are useful in preventing dental caries. There was no significant difference in retention of pit and fissure sealants in either of techniqueh.