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Medical Definition of Critical pH
1. The pH range, about 5.5, at which saliva ceases to be saturated with respect to calcium and phosphate, and below which tooth mineral will dissolve. (05 Mar 2000)
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1. The pH range, about 5.5, at which saliva ceases to be saturated with respect to calcium and phosphate, and below which tooth mineral will dissolve. (05 Mar 2000)