title: [Study of the effect of zine-oxide phosphorate base on preventing leakage in intracoronal bleaching]
abstract: 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.
authors.affiliation: Guanghua Hospital of Stomatology,Sun Yaten University of Medical Science. Guangzhou 510055, China.
authors.forename: X
authors.initials: X
authors.lastname: Wei
authors.forename: J
authors.initials: J
authors.lastname: Hong
authors.forename: X Y
authors.initials: XY
authors.lastname: Wang