Resin composite sealant vs. polyacid-modified resin composite applied to post eruptive mature and immature molars: two year clinical study.

The aim of this study was to evaluate the effect of the post eruptive enamel maturation on the durability of polyacid-modified resin composite (PMRC; Dyract Seal) and resin composite (Fissurit F) sealant and understanding the effect of posteruptive enamel maturation on the sealant retention. To determine the possible effect of the enamel maturation to the sealant retention, the success of the sealants applied to the newly erupted mandibular first molars of the 6 to 7 years old children, who were in the fourth or fifth eruption stage according to Dennison's classification were compared with the sealants applied to first mandibular molars which were in the mouth at least for two years of the 9 years old children. The molars of the younger children were accepted as immature and the elders were posteruptively mature. The sealant retention was evaluated for two years. At the end of two years the retention rates of Dyract Seal were significantly lower. Maturation has no effect on the sealant retention. Dyract Seal application after NRC conditioning is not recommended.