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  • Title: Effectiveness of a digital device providing real-time visualized tooth brushing instructions: A randomized controlled trial.
    Author: Shida H, Okabayashi S, Yoshioka M, Takase N, Nishiura M, Okazawa Y, Kiyohara K, Konda M, Nishioka N, Kawamura T, Iwami T.
    Journal: PLoS One; 2020; 15(6):e0235194. PubMed ID: 32584893.
    Abstract:
    INTRODUCTION: The aim of this trial was to investigate whether a digital device that provides real-time visualized brushing instructions would contribute to the removal of dental plaque over usual brushing instructions. METHODS: We conducted a single-center, parallel-group, stratified permuted block randomized control trial with 1:1 allocation ratio. Eligibility criteria included people aged ≥ 18 years, and exclude people who met the following criteria: severely crowded teeth; using interdental cleaning implement; having external injury in the oral cavity, or stomatitis; having less than 20 teeth; using orthodontic apparatus; visited to a dental clinic; having the possibility of consulting a dental clinic; having a dental license; not owning a smartphone or tablet device; smoker; taken antibiotics; pregnant; an allergy to the staining fluid; and employee of Sunstar Inc. All participants received tooth brushing instructions using video materials and were randomly assigned to one of two groups for four weeks: (1) an intervention group who used the digital device, providing real-time visualized instructions by connection with a mobile application; and (2) a control group that used a digital device which only collected their brushing logs. The primary outcome was the change in 6-point method plaque control record (PCR) score of all teeth between baseline and week 4. The t-test was used to compare the two groups in accordance with intention-to-treat principles. RESULTS: Among 118 enrolled individuals, 112 participants were eligible for our analyses. The mean of PCR score at week 4 was 45.05% in the intervention group and 49.65% in the control group, and the change of PCR score from baseline was -20.46% in the intervention group and -15.77% in the control group (p = 0.088, 95% confidence interval -0.70-10.07). CONCLUSIONS: A digital device providing real-time visualized brushing instructions may be effective for the removal of dental plaque.
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