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Effect of fluoride on overdenture abutments
R L Ettinger1, W Bergman, J Wefel
1Department of Prosthodontics, College of Dentistry, University of Iowa, Iowa City.
American Journal of Dentistry
|February 1, 1994
Summary
High fluoride concentrations significantly reduce caries on overdenture abutment teeth. Topical fluoride applications showed a dose-dependent preventive effect against demineralization, especially on occlusal surfaces.
Area of Science:
- Dental Materials Science
- Cariology
- Preventive Dentistry
Background:
- Overdenture abutment teeth are susceptible to root caries.
- Fluoride is a key agent in preventing dental caries.
- Evaluating high fluoride concentrations for enhanced caries prevention is crucial.
Purpose of the Study:
- To assess the caries preventive efficacy of varying high concentrations of topical fluoride.
- To compare the effects of fluoride on root surface versus occlusal dentin of overdenture abutments.
Main Methods:
- Extracted teeth from patients aged 50-70 were prepared as overdenture abutments.
- Teeth were treated with distilled water, 1,000 ppm, 5,000 ppm, or 10,000 ppm fluoride.
- Demineralization/remineralization cycling was performed for 17 days.
- Lesion depth and demineralization were quantified using microradiography and polarized light microscopy.
Main Results:
- Root surface lesions were significantly shallower than occlusal lesions.
- A clear dose-response relationship was observed between fluoride concentration and caries prevention.
- Higher fluoride concentrations (5,000 and 10,000 ppm) demonstrated greater protective effects.
Conclusions:
- High-concentration topical fluoride effectively prevents caries on overdenture abutment teeth.
- The preventive effect of fluoride is concentration-dependent.
- Occlusal surfaces are more vulnerable to demineralization than root surfaces in this model.