Aim of this experiment is the efficacy evaluation of three different types of surface preparation techniques by
microleakage assessment of two different sealing materials.
Sixty teeth were used for the experiment:
half were treated with Admira seal (Voco) and the remaining half with Delton FS+ (Dentsply). Each group was then divided into three
subgroups, which underwent three different preparation techniques before sealant placement: mechanical brushing, air abrasion and
Intensive bur FG 40D4, respectively. After immersion of the specimens in methylene blue solution, the degree of microleakage was
assessed by mean of optic microscope.
Results show no microleakage in samples treated with air abrasion, followed by the
samples treated with mechanical brushing. The teeth prepared by bur treatment before sealant application show a significant number
and degree of marginal infiltration.
It can be concluded that air abrasion technique is able to guarantee a reliable seal of
Vol.8 – n.3/2007
Harvard: S. Mazzoleni, M. De Francesco, D. Perazzolo, L. Favero, E. Bressan, R. Ferro, E. Stellini (2007) "Comparative evaluation of different techniques of surface preparation for occlusal sealing", European Journal of Paediatric Dentistry, 8(3), pp119-123. doi:
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