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

摘目的研究髓室内漂白时，磷酸锌水门汀基对抗过氧氢渗漏的作用。

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漂白部外吸收的一种有效方法。