PAPER A25 Practice Questions Mapped
Salivary Physiology & Biochemistry — ORE Part 1 Sample Questions
Salivary flow rates, buffering capacity, xerostomia diagnostic criteria, and enamel remineralization mechanics. Practice Single Best Answer (SBA) questions with evidence-based UK clinical rationale, instant scoring, and adaptive weakness tracking on MentoraMed.
HIGH-YIELD SAMPLE SBA ITEMOfficial Format: Single Best Answer
A patient presents with xerostomia and generalized dental erosion. When evaluating resting salivary function, what is considered the normal physiological pH range of healthy human saliva?
A. 5.0 – 5.8
B. 7.4 – 8.0
C. 5.8 – 7.4CORRECT ANSWER ✓
D. 4.5 – 5.5
lightbulbCLINICAL RATIONALE & GUIDELINE CITATION
Healthy human saliva maintains a physiological pH between 5.8 and 7.4, buffered primarily by bicarbonate, phosphate, and protein systems.
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