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  • Title: What is the critical pH and why does a tooth dissolve in acid?
    Author: Dawes C.
    Journal: J Can Dent Assoc; 2003 Dec; 69(11):722-4. PubMed ID: 14653937.
    Abstract:
    This paper discusses the concept of critical pH for dissolution of enamel in oral fluids. The critical pH does not have a fixed value but rather is inversely proportional to the calcium and phosphate concentrations in the solution. The paper also discusses why teeth dissolve in acid, why remineralization of white-spot caries lesions is possible and why remineralization of teeth eroded by acid is not possible.
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