[The effect of air abrasion on enamel  composite resin adhesive strength].
OBJECTIVE
In this study we observed the effect of air abrasion on enamel-composite resin adhesive strength in vitro.


METHODS
Thirty teeth were prepared and divided into three groups. One group was air abraded and was acid-etched, another one was air abraded, and the other one was acid-etched. Next the bond and resin were used. Then we observed and compared the shear bond strength. The data were analysed by Chi square(chi(2)) test.


RESULTS
Enamel-composite resin adhesive strength were not affected by acid etching and air abrading, but can be affected by air abrading alone.


CONCLUSIONS
In clinic the traditional acidetch technique that used in composite resin restoration can be replaced with air abrasion surface preparation technique.
Department of Oral Medicine, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
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Tao
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Xu
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Cui