[Effectiveness of fissure sealants in a child population]

In order to know how long will stay pit and fissure sealants in newly erupted molars we study one hundred molars in childhood population (between the ages 5 to 12 years). A pit and fissure chemical sealant isolated by a rubber dam during five minutes was used. The follow-up varies between six months and three years (22,4 months average) with full retention. 87 percent of the sealants were fully retained after twenty four months and there was an increasing of partial loss over thirty months. No total loss was observed and partial loss was more frequent on lower molars.