engleski

A clinical study assessing the short-term efficacy of combined in-office/at-home whitening treatment

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 [HP] + 2 weeks at-home whitening with 16% carbamide peroxide [CP]) ; 15 were assigned to control group. Instrumental color measurements were obtained before whitening (t0), immediately after in-office whitening (tin-office), after one week of active treatments (t1), and at the completion of the whitening treatment (t2). CIEL*a*b* values were recorded and CIEL*a*b* and CIEDE2000 color differences were calculated. Results The color change at tin- office was ΔEab = 4.7 and ΔE00 = 3.2 and overall color change of combined method at t2 was ΔEab = 8.2 and ΔE00 = 5.3 (P<0.05). A statistically significant effect for the mean CIEL*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.

in-office whitening ; at-home whitening

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