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Related Experiment Videos

Influence of a controlled pressure system on toothbrushing behavior.

P A Heasman1, I Heynderickx, M de Jager

  • 1Department of Restorative Dentistry, University of Newcastle, Newcastle upon Tyne, UK. p.a.heasman@newcastle.ac.uk

The Journal of Clinical Dentistry
|July 31, 2001
PubMed
Summary

Excessive brushing causes gum damage. An electric toothbrush

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Area of Science:

  • Dentistry
  • Biomedical Engineering

Background:

  • Excessive brushing force is a primary cause of gingival abrasion.
  • Over-vigorous brushing can lead to soft tissue damage and tooth wear.

Purpose of the Study:

  • To evaluate the effectiveness of the Philips/Jordan electric toothbrush's Controlled Pressure system (CPS) in modifying brushing behavior.
  • To determine if the mechanical feedback from the CPS is sensitive enough for users to regulate their toothbrushing force (TBF).

Main Methods:

  • Study I: Evaluated learning patterns in 17 subjects over two weeks, recording "clicks" from the CPS feedback.
  • Study II: Assessed TBF in 46 subjects after a four-week learning period, using CPS thresholds between 150-420g.
  • Measured brushing force and user adaptation to the feedback mechanism.

Main Results:

  • Ten of seventeen subjects in Study I showed clear learning, reducing "clicks" significantly within two weeks.
  • In Study II, the lowest mean TBF (approx. 80g) was achieved with CPS thresholds set between 210-240g.
  • The CPS demonstrated a significant influence on habitual brushing force, with optimal settings identified.

Conclusions:

  • The Controlled Pressure system (CPS) is a functional feature that effectively helps users control habitual brushing force.
  • Users can learn to modify their brushing behavior within two weeks using the CPS feedback.
  • The CPS provides valuable mechanical feedback for preventing excessive toothbrushing force and protecting gingival tissues.

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