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Related Concept Videos

Teeth01:15

Teeth

369
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
369

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In-Vitro Tooth Cleaning Efficacy and Filament End Rounding of Different Manual Children's Toothbrushes.

Gina A Gemperle, Blend Hamza, Raphael Patcas

    Oral Health & Preventive Dentistry
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    Summary

    Rotational and vertical brushing movements demonstrated superior cleaning efficacy for manual children

    Keywords:
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    Area of Science:

    • Dental hygiene research
    • Materials science in dentistry

    Background:

    • Effective plaque removal is crucial for children's oral health.
    • Manual toothbrush design and usage significantly impact cleaning performance.

    Purpose of the Study:

    • To evaluate the cleaning efficacy of 18 manual children's toothbrushes.
    • To assess the impact of horizontal, vertical, and rotational brushing movements.
    • To examine the filament end rounding of the toothbrushes.

    Main Methods:

    • In-vitro study using artificial teeth coated with titanium dioxide.
    • Brushing machine simulating horizontal, vertical, and rotational movements (1 min, 100 g pressure).
    • Scanning electron microscopy for filament morphology assessment (Silverstone and Featherstone scale).

    Main Results:

    • Rotational and vertical movements yielded the highest cleaning efficacy across all toothbrushes.
    • Horizontal movement resulted in the poorest cleaning efficacy for most toothbrushes.
    • Only 3 out of 18 toothbrushes exhibited acceptable rounded filament ends.

    Conclusions:

    • Significant variation exists in the cleaning efficacy of manual children's toothbrushes.
    • Rotational and vertical brushing movements are generally more effective for cleaning.
    • Toothbrush filament design (rounding) is a critical factor for effective cleaning.