A crossover clinical investigation of the safety and efficacy of a new oscillating/rotating electric toothbrush and a high frequency electric toothbrush.

Purpose: To compare the efficacy on plaque, gingivitis and calculus of an oscillating/rotating power toothbrush (Braun Oral-B Ultra Plaque Remover-D9) and a high frequency toothbrush (sonicare).

Materials And Methods: A 6-week, randomized crossover study was carried out. A total of 62 healthy adult subjects completed the study and were assessed for plaque control, gingival condition and calculus control. At the end of the study, subjects completed a questionnaire which assessed their preferences for the two devices.

Results: Both toothbrushes were found to be safe and effective, but a significantly lower gingival index (P = 0.002) and a lower calculus index (P = 0.022) was found in the D9 group. Assessment of patient preferences revealed that a significant majority of subjects in the study (65%) preferred the D9 to the high frequency toothbrush (27%). It is concluded that the D9 may offer greater potential for the maintenance of good gingival condition than the high frequency toothbrush, and that the greater preference for the D9 may be important with respect to long-term compliance. The implications of these findings are discussed.