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Dentin Erosion: Method Validation and Efficacy of Fluoride Protection
Clifton M Carey1, William Brown2
1School of Dental Medicine, University of Colorado, 12800 E. 19th Ave., MS8310, Aurora, CO 80045, USA. clifton.carey@ucdenver.edu.
Transverse microradiography effectively measured dentin erosion. Optimal fluoride concentration (25.0 mg/L) protected dentin against citric acid erosion, highlighting fluoride
Area of Science:
- Dental research focusing on mineralized tissue erosion.
- Materials science in dental applications.
Background:
- Aging populations face increased gingival recession and root exposure.
- Root exposure elevates the risk of dentin erosion from acidic challenges.
Purpose of the Study:
- To evaluate transverse microradiography (TMR) for assessing dentin erosion.
- To investigate the interaction between fluoride and citric acid on dentin erosion.
Main Methods:
- Experimental design: 4 fluoride concentrations × 3 citric acid concentrations.
- Dentin samples exposed to solutions for 1 and 4 hours.
- Quantification of surface loss using TMR with 0.9 μm/pixel resolution.
Main Results:
- Dentin erosion escalated with citric acid concentration and exposure time.
- Increased fluoride concentration significantly reduced dentin erosion.
- Statistical significance (p < 0.0001) for individual and interaction effects.
Conclusions:
- Transverse microradiography is a suitable method for quantifying dentin erosion.
- 25.0 mg/L fluoride concentration is optimal for protecting dentin against 1.00% citric acid.
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