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  • Title: Brushing Behavior Changes and Plaque Removal with an Electric Toothbrush: A clinical trial.
    Author: Adam R, Zou Y, Grender J, Mesples U, Erb J, Bray KK.
    Journal: J Dent Hyg; 2023 Oct; 97(5):155-165. PubMed ID: 37816615.
    Abstract:
    Purpose To evaluate changes in toothbrushing behavior and plaque removal performance with usage of a next generation oscillating-rotating electric toothbrush (NG-OR).Methods This exploratory clinical study had a two-treatment, three-period, single-group, sequential design. Generally healthy adults with a screening whole mouth mean Turesky modified Quigley-Hein Plaque Index (TQHPI) score of at least 1.75 on a 0-5 scale and who were primarily OR brush users were enrolled. Participants used each OR toothbrush in A-B-B order, where a currently marketed OR brush with a traditional mechanical drive system (T-OR) was used in period A and the NG-OR brush with a linear magnetic drive was used in period B. At Visit 1, qualifying participants brushed on-site with T-OR. After a 48h washout, participants returned for Visit 2 and brushed on-site with NG-OR. Participants then used NG-OR for 1 week, twice daily, at home and returned for Visit 3 to brush on-site with NG-OR again. For all on-site brushings, participants were instructed to brush for 2min without interactive features. Each toothbrush was tagged with a transmitter chip connected to a Motion Tracking System to record movements of the toothbrush and participant using infrared light transmission to determine Isochronicity (brushing time uniformly distributed across the dentition). Plaque was measured using TQHPI. Primary variables were Isochronicity and TQHPl whole mouth mean plaque reduction (pre-brushing minus post brushing).Results Overall, 41 participants enrolled and received treatment; 40 completed the trial. NG-OR showed significantly greater Isochronicity after a single brushing (p=0.043) and after a 1-week at-home use (p=0.001) versus T-OR. NG-OR showed 41% greater whole mouth plaque removal than T-OR (p<0.001) after a single brushing. Plaque reduction by region/surface was consistent with whole mouth results.Conclusion The NG-OR brush showed greater brushing uniformity and plaque removal versus the T-OR brush.
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