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Related Experiment Videos

Salivary pH while dissolving vitamin C-containing tablets.

G L Hays1, Q Bullock, E P Lazzari

  • 1Department of Oral Diagnostic Sciences, Dental Branch, University of Texas Health Science Center, Houston 77030.

American Journal of Dentistry
|October 1, 1992
PubMed
Summary

Chewable vitamin C tablets can harm teeth by dissolving enamel due to prolonged ascorbic acid exposure and reduced salivary pH. Swallowing vitamin C products is recommended for dental health.

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Area of Science:

  • Biochemistry
  • Dental Science
  • Nutrition

Background:

  • Vitamin C (ascorbic acid) is available in various forms, including chewable tablets.
  • Prolonged exposure of teeth to ascorbic acid can lead to dental issues.

Purpose of the Study:

  • To investigate the potential dental risks associated with chewable vitamin C tablets.
  • To analyze the effect of chewable vitamin C on salivary pH and mineral ion concentration.

Main Methods:

  • The study examined the process of enamel dissolution when exposed to chewable vitamin C.
  • Salivary pH and calcium/phosphorus ion concentrations were monitored during tablet dissolution.

Main Results:

  • Chewable vitamin C tablets cause a significant drop in salivary pH.

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  • This pH drop reduces calcium and phosphorus ion concentration, initiating enamel dissolution.
  • Buffering agents like sodium ascorbate may be insufficient in many products.

    • Conclusions:

    • Repeated use of chewable vitamin C tablets can damage tooth enamel.
    • There is no apparent therapeutic benefit from topical vitamin C application.
    • Vitamin C supplements should be swallowed to mitigate dental risks.