1Bettngerg P,Craber HG,Lamper F. Penetration of etching agent and it influence on sealant penetration into fissure in vitro. Dent Mater,1996, 12:96-102.
2Zyskind D, Zyskind K, Hirschfeld Z, et al.Effeet of etching on leakage of sealants placed after air abrasion. Pediatr Dent, 1998, 20:25-27.
3Grande RH, Ballester R, Singer J da M, et al. Microleakage of a universal adhesive used as a fissure sealant. Am J Dent, 1998 , 11:109- 113.