evaluation of an experimental method for bonding of orthodontic brackets with self-adhesive resin cements.

Background: Self-adhesive resin cements do not require the surface treatment of teeth and are said to release fluoride, which makes them suitable candidates for bonding of orthodontic brackets. The objectives of this study was to investigate the shear bond strength (SBS) of self-adhesive resin cements on etched on non-etched surfaces in vitro and to assess their fluoride release features.

Materials And Methods: Four fluoride-releasing dual-cure self-adhesive resin cements were investigated.

[The observation of the contained fluoride sealant on caries prevention for 3 years].

Pit and fissure sealant is an effective method for preventing pit and fissure caries,though it has less effect in smooth surface teeth.But the contained sealant is effective on caries prevention both in pit and fissure area and in smooth surface.The aim of the present search was observing the clinic results of the contained fluoride sealant on caries prevention.