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Weaker dental enamel explains dental decay
Alexandre R Vieira1, Carolyn W Gibson2, Kathleen Deeley1
1Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America.
Plos One
|April 18, 2015
Summary
Dental caries susceptibility may depend on amelogenin levels during tooth development. Higher amelogenin enhances enamel resistance to acid, potentially reducing caries risk.
Area of Science:
- Biochemistry
- Dental Science
- Biomaterials Science
Background:
- Dental caries is a prevalent, bacteria-mediated disease.
- Current understanding attributes caries to poor hygiene and sugar intake.
- This model doesn't explain caries-free individuals with similar risk factors.
Purpose of the Study:
- To investigate the role of amelogenin in dental caries susceptibility.
- To test the hypothesis that amelogenin levels during enamel development influence caries risk.
Main Methods:
- Generated mouse models with varying amelogenin levels during dental development.
- Performed mechanical tests on enamel.
- Assessed enamel resistance to acid dissolution.
Main Results:
- Enamel developed with lower amelogenin levels was mechanically weaker.
- Enamel from mice over-expressing amelogenin showed increased resistance to acid dissolution.
Conclusions:
- Amelogenin levels during enamel development significantly impact caries susceptibility.
- Higher amelogenin expression may confer greater resistance to dental caries.
- This finding offers a new perspective beyond traditional caries risk factors.
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