Microleakage and SEM evaluation of fissure sealants placed by use of self-etching priming agents

Microleakage under Metallic and Ceramic Brackets Bonded with Orthodontic Self-Etching Primer Systems

“…24 However, several in vitro studies do not advocate the use of selfetching adhesives on intact enamel because of significantly lower bond strengths, greater microleakage, and an etching pattern that is not deep enough to obtain good penetration of bonding resin. 25,26 Our results were consistent with the literature for microleakage under brackets at the enamel-adhesive interface. 8 Both metallic and ceramic brackets bonded with TSEP showed significantly higher microleakage than when the conventional acid-etch method was used.…”

Microtensile bond strength to ground enamel by glass-ionomers, resin-modified glass-ionomers, and resin composites used as pit and fissure sealants

“…A large amount of research data has been collected for sealants. This includes findings from microleakage tests, 7,11,14,29 observations of retention and caries protection, 8,10,19,20,21,23,27,28 conventional and environmental scanning electron microscopy, 15 transmission electron microscopy 15 and bond strength measurements. 12,13,24,25,30 In particular, the strength of the adhesion to enamel of sealing materials has so far been assessed only with shear 13,24,25,30 and traditional tensile tests.…”

Use of a self-etching adhesive on previously etched intact enamel and its effect on sealant microleakage and tag formation

“…However, both methods exhibited significantly more microleakage than sealants applied over phosphoric acid treated fissures. 16,17 Furthermore, self-etching adhesives exhibited significantly lower bond strengths on intact than on ground enamel. 18 We hypothesized that this disadvantage could be minimized with the use of a strong (pH!1), filled, one-step, self-etching adhesive (Xeno w III) on phosphoric acid etched enamel.…”