Tooth colour change with Ozicure Oxygen Activator: a comparative in vitro tooth bleaching study.
BACKGROUND
This in vitro study compared a new tooth bleaching product, Ozicure Oxygen Activator (O3, RSA) with Opalescence Quick (Ultradent, USA) using a randomised block design to assess tooth colour change.


OBJECTIVE
Colour change, stability and relapse in canine, incisor and premolar teeth was assessed following three bleach treatments and subsequent tooth colour assessment.


METHODS
Ninety nine teeth (canines, incisors and premolars), which were caries free, had no surface defects and were within the colour range 1M2 and 5M3 were selected. Teeth were randomly divided into the three experimental groups: Opalescence Quick, Ozicure Oxygen Activator and control. The three experimental groups received three treatments of one hour each over three consecutive days. Tooth colour was assessed using the Vitapan 3D Master Tooth Guide (VITA, Germany). A General Linear Models test for analysis of variance for a fractional design with significance set at P < 0.05 was used to test for significance.


RESULTS
Both bleaching methods significantly lightened the teeth (P < 0.0001). Tooth colour change was mainly after the first hour of tooth bleaching. The tooth type was significant in tooth colour change (P = 0.0416). Tooth colour relapse and resistance to colour change were observed.


CONCLUSIONS
Ozicure Oxygen Activator bleached teeth in a manner and to an extent similar to Opalescence Quick.
Department of Restorative Dentistry, Faculty of Dentistry, University of the Western Cape, South Africa. grundlingh@iburst.co.za
A A
AA
Grundlingh
E S
ES
Grossman
M J
MJ
Witcomb
D001641:Bicuspid / Q000187:drug effects; D003116:Color; D003481:Cuspid / Q000187:drug effects; D004338:Drug Combinations; D006801:Humans; D006861:Hydrogen Peroxide / Q000627:therapeutic use; D007180:Incisor / Q000187:drug effects; D008422:Materials Testing; D010126:Ozone / Q000627:therapeutic use*; D010545:Peroxides / Q000627:therapeutic use; D011145:Polyvinyls / Q000627:therapeutic use; D013997:Time Factors; D014070:Tooth / Q000187:drug effects* / Q000473:pathology; D014073:Tooth Bleaching / Q000295:instrumentation / Q000379:methods*; D058205:Tooth Bleaching Agents / Q000627:therapeutic use*; D014508:Urea / Q000031:analogs & derivatives / Q000627:therapeutic use
D004338:Drug Combinations; D010545:Peroxides; D011145:Polyvinyls; D058205:Tooth Bleaching Agents; C093177:tooth-bleaching agent, Opalescence; D010126:Ozone; D014508:Urea; D006861:Hydrogen Peroxide