Conclusion The zine oxide phosphorate base was a kind of effctive measure to prevent post-bleaching external cervical resorption.

结论磷酸锌水门汀基是防治内牙颈部外吸收种有效方法。

Objective To study the effect of zinc-oxide phosphorate base on preventing hydrogen peroxide leakage in intracoronal bleaching.

摘要究髓室内时，磷酸锌水门汀基对抗过氧化氢渗漏作用。