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. 2019 Oct 2;38(5):790-797.
doi: 10.4012/dmj.2018-129. Epub 2019 Aug 22.

Effect of application of desensitizers before bleaching on change of tooth shade

Khin Yupar Kyaw  1 , Masayuki Otsuki  1 , Noriko Hiraishi  1 , Michelle Sunico Segarra  1   2 , Junji Tagami  1
Affiliations
Free article

Effect of application of desensitizers before bleaching on change of tooth shade

Khin Yupar Kyaw et al. Dent Mater J. .
Free article

Abstract

The aim of this in vitro study was to evaluate the effects of desensitizer pre-treatment on in-office bleaching using an artificial discoloration tooth model. The stained specimens were divided into four groups (n=10); without application (Control group), Shield Force plus (SF group), UltraEz (UE group) and Teeth Mate AP paste (TM group) applied before bleaching. Each group was bleached by an in-office bleaching agent. The CIE L*a*b* values were measured by a colorimeter before and after ten consecutive bleaching treatments and the color difference (∆E) was calculated. There was no statistical difference among ∆E values of Control, UE, and TM groups (p>0.05). There was a significant difference between SF and Control groups (p<0.001). It was concluded that application of TM and UE did not affect the change of tooth shade while SF application impeded the bleaching effect.

Keywords: Desensitizer; Hypersensitivity; Tooth bleaching; Tooth shade.

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