Effect of Sonic Wave Toothbrushes with Extra-fine Bristles on Gingival Injury, Clinical Effects and Intra-pocket Bacteria

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  • Yuji MATSUSHIMA
    Department of Periodontology, Tsurumi University School of Dental Medicine
  • Takuma SUZUKI
    Department of Periodontology, Tsurumi University School of Dental Medicine
  • Akihiro YASHIMA
    Department of Periodontology, Tsurumi University School of Dental Medicine
  • Satoshi SHIRAKAWA
    Department of Periodontology, Tsurumi University School of Dental Medicine
  • Joichiro SUZUKI
    Department of Periodontology, Tsurumi University School of Dental Medicine
  • Kazuhiro GOMI
    Department of Periodontology, Tsurumi University School of Dental Medicine

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  • 極細毛音波歯ブラシの歯肉傷害と臨床効果ならびにポケット内細菌への影響

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 Purpose: Due to their accessibility to periodontal pockets, manual toothbrushes with extra-fine bristles are fairly effective in plaque control. However, sonic wave toothbrushes seem to be more effective owing to their vibratory action. In the present study, we examined the effect of sonic wave toothbrushes with extra-fine bristles on plaque removal, change of flora within the periodontal pocket and gingival injury.<br> Methods: Fifty-two patients with gingivitis or slight periodontitis were divided into four different groups. Three different varieties of sonic wave toothbrushes (based on the kind of extra-fine bristles) and one manual toothbrush with extra-fine bristles were used.<br> Gingival injury, volume of gingival crevicular fluid, pocket depth, bleeding on probing, gingival index, and plaque control record were examined at 0, 2, and 4 week time points. Bacterial counts in the periodontal pockets were measured before and after toothbrushing using the polymerase chain reaction-Invader method.<br> Results: All toothbrushes were found to exert little gingival injury. No significant differences in plaque removal or gingival inflammatory improvement were observed between each toothbrush. However, a significant decrease in periodontal pathogens was noted with the sonic wave toothbrushes with extra-fine bristles of 3 mm.<br> Conclusion: Our results indicate that the extra-fine bristles of the sonic wave toothbrush are effective for plaque control in the periodontal pocket. Furthermore, they do not cause gingival injury and are safe for use in the oral cavity.

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