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Comparison of Whitening Dentifrices on the Effectiveness of In-Office Tooth Bleaching: A Double-Blind Randomized Controlled Clinical Trial


Jiang, N; Zhang, C; Agingu, C; Attin, T; Cheng, H; Yu, H (2019). Comparison of Whitening Dentifrices on the Effectiveness of In-Office Tooth Bleaching: A Double-Blind Randomized Controlled Clinical Trial. Operative Dentistry, 44(2):138-145.

Abstract

OBJECTIVES To investigate the effect of whitening dentifrices on the effectiveness of in-office tooth bleaching. METHODS AND MATERIALS A double-blind randomized controlled clinical trial was performed. The participants were randomly allocated into three groups according to the different dentifrices used during this clinical trial: regular dentifrice (group C), conventional whitening dentifrice (group CW), and whitening dentifrice containing blue covarine (group CU). All participants received in-office tooth bleaching for the maxillary anterior teeth (two sessions conducted at a one-week interval). Tooth color was measured with a spectrophotometer at baseline (T1), after the first bleaching session (T2), after the second bleaching session (T3); one week after the completion of in-office bleaching (T4); and three weeks after the completion of in-office bleaching (T5). The data were statistically analyzed through repeated analysis of variance and the Tukey test (α=0.05). RESULTS Sixty participants completed the study (n=20 per group). At T3, group CU exhibited the lowest ΔE values ( p=0.008). The ΔE values increased from T4 to T5 in the CW and CU groups, whereas a decrease in ΔE values was observed for group C. CONCLUSIONS The use of a whitening dentifrice containing blue covarine during in-office bleaching reduced color changes. After tooth bleaching, brighter tooth colors were observed in the participants who brushed with whitening dentifrices compared to those who brushed with a regular dentifrice.

Abstract

OBJECTIVES To investigate the effect of whitening dentifrices on the effectiveness of in-office tooth bleaching. METHODS AND MATERIALS A double-blind randomized controlled clinical trial was performed. The participants were randomly allocated into three groups according to the different dentifrices used during this clinical trial: regular dentifrice (group C), conventional whitening dentifrice (group CW), and whitening dentifrice containing blue covarine (group CU). All participants received in-office tooth bleaching for the maxillary anterior teeth (two sessions conducted at a one-week interval). Tooth color was measured with a spectrophotometer at baseline (T1), after the first bleaching session (T2), after the second bleaching session (T3); one week after the completion of in-office bleaching (T4); and three weeks after the completion of in-office bleaching (T5). The data were statistically analyzed through repeated analysis of variance and the Tukey test (α=0.05). RESULTS Sixty participants completed the study (n=20 per group). At T3, group CU exhibited the lowest ΔE values ( p=0.008). The ΔE values increased from T4 to T5 in the CW and CU groups, whereas a decrease in ΔE values was observed for group C. CONCLUSIONS The use of a whitening dentifrice containing blue covarine during in-office bleaching reduced color changes. After tooth bleaching, brighter tooth colors were observed in the participants who brushed with whitening dentifrices compared to those who brushed with a regular dentifrice.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Conservative and Preventive Dentistry
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:1 March 2019
Deposited On:15 Nov 2018 12:50
Last Modified:23 Feb 2020 08:01
Publisher:Academy of Operative Dentistry
ISSN:0361-7734
OA Status:Closed
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.2341/17-333-C
PubMed ID:30106335

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