[Study of the effect of zine-oxide phosphorate base on preventing leakage in intracoronal bleaching]
OBJECTIVE: To study the effect of zine-oxide phosphorate base on preventing hydrogen peroxide leakage in intracoronal bleaching. METHODS: Intracoronal bleaching was given to exsomatized teeth,and the amounts of penetrated hydrogen peroxide was determind by spectro-photo-metry. RESULTS: Placement of a zinc oxide phosphorat protective base at CEJ level decreased hydrogen peroxide. penetration dramatically. CONCLUSION: The zine oxide phosphorate base was a kind of effective measure to prevent post-bleaching external cervical ersorption.
Wei
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X
Guanghua Hospital of Stomatology,Sun Yaten University of Medical Science. Guangzhou 510055, China.
Hong
J
J
Wang
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