SDC Dentist Qualifying Exam Practice Questions - Singapore Dental Council Qualifying Examination For Dentists Exam

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What is the primary buffering system in stimulated human saliva that maintains oral pH above the critical threshold of 5.5 to prevent enamel demineralization?

Carbonic acid-bicarbonate system Phosphate buffering system Macromolecular protein system Urea-ammonia system

Correct Answer:

Carbonic acid-bicarbonate system

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