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Objective
To evaluate the efficacy of the Sonicare FlexCare to remove induced extrinsic tooth stains
Methodology
Twenty healthy adults aged 19-53 years participated in a forced-stain model study to assess the ability of the Sonicare FlexCare to mechanically remove extrinsically induced stain. The stain inducing slurry consisted of 0.12% chlorhexidine, doublestrength instant tea, instant coffee and grape juice concentrate used over a period of 3 weeks. Subjects were known stain formers and included coffee, tea, tobacco and red-wine users. Tooth shade was assessed on at least 3 buccal surfaces of the anterior dentition. The evaluation of tooth shade and color change was assessed using the X-Rite ShadeVision® device, a digital imaging analysis tool. Vitapan® Classical shades were derived on the system, as were changes in color parameters using the CIE color equation, ΔE = ((ΔL*)2 + (Δa*)2 + (Δb*)2)1/2. Following the period of stain induction, subjects were dispensed a Sonicare FlexCare for use over a 6-week period, with safety and efficacy intervals assessed at 2, 3 and 6 weeks post product use. A low abrasive dentifrice was used throughout the study.
Results
Sonicare FlexCare was proven to significantly reduce stain over a period of 2, 3 and 6 weeks (p<0.0001). Vitapan Classical shade improvements of at least 2 shades were seen at all time points. ΔE values greater than 3.5 were also observed at these intervals (p<0.0001).
Conclusion
Sonicare FlexCare was shown to be effective in removing commonly observed extrinsic stain-forming pigments from tooth surfaces. An improvement of 2 Vitapan Classical shades was seen following 2, 3 and 6 weeks product use.
Putt M, Milleman J, Jenkins W, Wei J, Schmitt P, Strate J. Data on file, 2007.
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