Purpose: To compare the microleakage of a self-etching sealant with a traditional
phosphoric acid-etched sealant under non-contaminated and saliva-contaminated
conditions. Methods: Seventy-eight sound extracted human molars were used (n=13).
Teeth in groups 1 and 2 were cleaned with pumice, phosphoric acid etched, rinsed, drying
agent applied, sealant placed (UltraSeal XT plus) and light cured. Teeth in groups 3 and 4
were sealed using the same steps as groups 1 and 2 with the addition of a bonding agent
placed underneath the sealant. Teeth in groups 5 and 6 were cleaned with a proprietary
flour pumice and rinsed prior to being sealed with a self-etching sealant (Enamel Loc®).
Teeth in groups 2, 4 and 6 were contaminated with saliva and thoroughly air-dried prior
to the sealant placement. All teeth were subjected to a thermocycling process, stained
with silver nitrate, sectioned, and the images of sealant on the occlusal surface were
recorded. Microleakage distance was measured and subjected to a two-way ANOVA
analysis. Results: Significantly larger microleakage distances were found for the selfetching sealant compared to the traditional sealant group and those sealants that had a
bonding agent placed underneath them. (P=0.0001). Saliva contamination did not
significantly affect the microleakage distance (P=0.1674). Conclusions: Under the
conditions used in this in-vitro study, the self-etching sealant, regardless of contamination
condition, had extensive microleakage distances in comparison to little microleakage in
the traditional phosphoric acid-etched sealant and/or those that had a bonding agent used underneath them.
University of Minnesota M.S. thesis. June 2011. Major: Dentistry. Advisor: Soraya Beiraghi, D.D.S., M.S., M.S.D. 1 computer file (PDF); v, 53 pages.
Parco, Todd M..
Microleakage of self-etching sealants on dry and saliva contaminated enamel..
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