Attin T, Paqué F, Ajam F, Lennon A M
Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg-August Universität Göttingen, Göttingen, Germany.
Int Endod J. 2003 May;36(5):313-29. doi: 10.1046/j.1365-2591.2003.00667.x.
Internal bleaching procedures such as the walking bleach technique can be used for whitening of discoloured root-filled teeth. The walking bleach technique is performed by application of a paste consisting of sodium perborate-(tetrahydrate) and distilled water (3% H2O2), respectively, in the pulp chamber. Following a critical review of the scientific literature, heating of the mixture is contra-indicated as the risk of external cervical resorption and the formation of chemical radicals is increased by application of heat. An intracoronal dressing using 30% H2O2 should not be used in order to reduce the risk of inducing cervical resorption. This review provides advice based on the current literature and discusses how the walking bleach technique can lead to successful whitening of non-vital root-filled teeth without the risks of side-effects.
诸如“渐进性漂白术”之类的内漂白程序可用于美白已进行根管充填的变色牙齿。渐进性漂白术是通过在牙髓腔中分别应用由过硼酸钠（四水合物）和蒸馏水（3%过氧化氢）组成的糊剂来进行的。在对科学文献进行严格审查后，不建议加热该混合物，因为加热会增加发生外源性颈缘吸收和形成化学自由基的风险。为降低诱发颈缘吸收的风险，不应使用30%过氧化氢进行冠内封药。本综述基于当前文献提供建议，并讨论渐进性漂白术如何能够成功美白无活力的根管充填牙齿而无副作用风险。
