Effects of Differences in Bristle Hardness and Vibration of an Electric Toothbrush on Plaque Removal and Toothbrushing Pressure.

DOI 12 Citations
  • ITOH Yoshihiko
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • SIMIZU Nobuyuki
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • FUJII Miya
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • SEKI Noriko
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • KURIHARA Kenji
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • SUZUKI Joichiro
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • WATANABE Takaaki
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • ARAI Takashi
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine
  • NAKAMURA Jiro
    Department of Periodontics and Endodontics, Tsurumi University School of Dental Medicine

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Other Title
  • 電動歯ブラシの振動数と歯ブラシの硬さの違いがプラーク除去およびブラッシング圧に与える影響

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Abstract

The purpose of this study was to investigate the effects of differences in the vibration of an electric toothbrush and the hardness of electric toothbrush bristles on plaque removal and toothbrushing pressure. Nine electric toothbrushes, which differed in the frequency of vibrations (1, 000cpm, 2, 000cpm, 3, 000cpm) and bristle hardness (soft, mdium, hard) were used in this study.<BR>Nine subjects participated in the experiment. Plaque scoring was carried out before and after toothbrushing, and the plaque removal rate was calculated. Toothbrushing pressure was determined. Side effects of their usage were also checked after toothbrushing.<BR>The results were as follows:<BR>1. Statistically significant differences in plaque removal from mesial tooth surfaces were found among the frequencies of vibrations and the hardness of electric toothbrush bristle (p<0.05).<BR>2. Electric toothbrushes with a lower frequency of vibrations showed higher toothbrushing pressures (p<0.05).<BR>3. The harder toothbrushes were used the lower PCR by O'Leary et al. (p<0.05).<BR>4. Erectric toothbrushes with vibrations of 2, 000 cpm showes no gingival injury or bleeding.

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