Objectives: To study the clinical efficacy of two different whitening products using a recently marketed adaptable versus a traditional customized tray formulation, both designed for at home bleaching.
Methods: 50 patients attending a Portuguese dental school clinic were recruited for this study. This was a two arm parallel RCT in which after initial screening visit and dental prophylaxis, each patient was randomized to one of two groups: Tres White Supreme (Ultradent, USA) (TWS) with 10 % hydrogen peroxide (HP) designed as an adaptable tray formulation or Opalescence 10%PF (Ultradent,USA) (OPL) with 10% Carbamide Peroxide (CP) designed for customized tray at home use. Bleaching regimen was followed as determined by manufacturer protocols. Efficacy was assessed visually using the Vita pan classical shade guide (VITAPAN classical, VITA Zahnfabrik, Bad Säckingen, Germany) on the facial surface of the six anterior maxillary and mandibular teeth at pre-treatment (PT), Half-treatment (HT) and End-treatment (ET). Of the twelve anterior teeth only the ones with a gradable VITA shade A3 or darker were selected at baseline. All shade guide colour evaluations were carried out under standard colour corrected operatory light and photo documentation of tooth shade was made. Efficacy was expressed in Mean±S.E.M. of vita shade guided values. Mean differences were tested with Student t Test, significance level was set at α= 0.05. This study was approved by the local ethical committee.
Results:
Product | Vita Shade Guided Values | ||
PT (Mean±S.E.M.) | HT (Mean±S.E.M.) | ET (Mean±S.E.M.) | |
OPL | 10.763±0.132 | 6.376±0.224 | 4.360±0.184 |
TWS | 10.258±0.155 | 6.927±0.230 | 3.797±0.275 |
At end-treatment the Δ Vita shade improvement was 6.280±0.177 and 6.584±0.269, for OPL and TWS, respectively.
Conclusions: The results of this study suggest that both TWS and OPL bleaching using 10% HP and 10% CP achieved significant whitening and presented similar efficacy results.