Objective: The objective of this study is to compare a self-etching sealant with a conventional fissure sealant over 3, 6 and 12 months follow up.
Study designing: double blinded randomized clinical trial
Methods: in this clinical trial, sample group consisted of 200 first permanent molars teeth of 50 children aged 7 to 9 years.
Selection criteria include four fully erupted first permanent molars in each patient and the permanent molars have deep, narrow and retentive fissures.
The first permanent molars with occlusal or approximal caries and Patients with any bruxism or malocclusion are exclusion criteria.
A split mouth technique, where the two techniques will be randomly allocated to either the right or the left side of the mouth is used. On the one side, a self-etching light cured fissure sealant, Prevent Seal (Itena, Paris, France) and on the other side, a conventional light-cured fissure sealant concise (3M ESPE,St.Paul,MN,USA) will be used. At the follow-up visits after 3 and 6months the sealants will be evaluated in terms of retention, the presence of caries and marginal integrity according to Modified USPHS system and two groups will be compared.