Self-charged toothbrush facilitates tooth healthcare maintenance.

Local piezoelectric stimulation from a self-charged PVDF toothbrush reduces plaque formation and gingival inflammation in clinical evaluation.

• Why it matters: Conventional toothbrushes often do not maintain an antibacterial environment on tooth surfaces, letting bacteria recover and recolonize.
• What they did: The team built a self-charged toothbrush combining daily brushing with piezoelectric activity that generates reactive oxygen species and surface potential to reduce adhesion. Mechanistic work showed oxidative membrane damage that impairs the ATP-binding cassette transporter pathway.
• The result: The approach links piezoelectric PVDF stimulation to sustained antibacterial effects, suggesting physical cleaning plus electrical/oxidative disruption can improve oral healthcare maintenance.

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