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Quintessence Int 50 (2019), No. 10     4. Oct. 2019
Quintessence Int 50 (2019), No. 10  (04.10.2019)

Page 802-807, doi:10.3290/j.qi.a43248, PubMed:31559399


A modified inside/outside bleaching technique for nonvital discolored teeth: a case report
Reitzer, François / Ehlinger, Claire / Minoux, Maryline
Over the past decades, the walking bleach technique using sodium perborate was considered a safe and effective method to bleach nonvital discolored teeth. However, sodium perborate has been classified as carcinogenic, mutagenic, and toxic for reproduction by European Union legislation. Its use is therefore prohibited since April 2015. The initially described inside/outside bleaching technique, combining internal and external application of 10% carbamide peroxide, is an alternative to the walking bleach technique using sodium perborate. While good esthetic results and low risks of external cervical resorptions have been associated with this technique, its main drawback is that the access cavity is left open. To overcome this disadvantage, the present authors propose to seal the bleaching agent in the access cavity instead of leaving the latter open. Through a clinical case, this paper presents and discusses several aspects of this protocol, including the clinical steps, the design of the bleaching tray, and the treatment of potential recurrences. The present authors believe that the protocol proposed in this article is easier to use for the patient. Moreover, it prevents the accumulation of food debris in the access cavity and avoids the colonization of coronary dentin by bacteria.

Keywords: carbamide peroxide, case report, inside/outside bleaching technique, sodium perborate, walking bleach technique