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A clinical study assessing the short‐term efficacy of combined in‐office/at‐home whitening treatment
Author(s) -
Knezović Zlatarić Dubravka,
Žagar Maja,
Illeš Davor
Publication year - 2019
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/jerd.12467
Subject(s) - carbamide peroxide , medicine , tooth whitening , hydrogen peroxide , colorimetry , dentistry , chemistry , chromatography , enamel paint , organic chemistry
Objective The purpose of this randomized clinical trial was to assess the efficacy of color change in combined in‐office/at‐home whitening. Materials and Methods Thirty participants were randomly divided into two groups: 15 received combined treatment in‐office whitening (6% hydrogen peroxide + 2 weeks at‐home whitening with 16% carbamide peroxide [CP]); 15 were assigned to control group. Instrumental color measurements were obtained before whitening ( t 0 ), immediately after in‐office whitening ( t in‐office ), after 1 week of active treatments ( t 1 ), and at the completion of the whitening treatment ( t 2 ). CIE L * a * b * values were recorded and CIE L * a * b * and CIEDE2000 color differences were calculated. Results The color change at t in‐office was Δ E ab = 4.7 and Δ E 00 = 3.2 and overall color change of combined method at t 2 was Δ E ab = 8.2 and Δ E 00 = 5.3 ( P < 0.05). A statistically significant effect for the mean CIE L * a * b * and CIEDE2000 values was detected within time with the mean a *, b * and C ′ values decreasing and mean h ′ values increasing significantly ( P < 0.05). Conclusions Combined in‐office/at‐home whitening was effective. Whitening efficacy increased upon application of 16% CP in combined in‐office/at‐home treatment ( P < 0.05). Clinical Significance The statistically significant increase in color change recommends clinical application of combined in‐office/at‐home whitening treatment.