Sialometry Method — NDEB AFK MCQ

Correct answer: A — Unstimulated whole sialometry (draining/spitting method over 5-15 minutes)

Unstimulated whole sialometry (the draining or spitting method) is the most accurate and standardised clinical method for measuring salivary flow rate. The patient refrains from eating, drinking, smoking, and oral hygiene for 1-2 hours before testing. They sit upright, lean forward, and allow saliva to drain passively into a graduated cylinder for 5-15 minutes (spitting periodically). Normal unstimulated flow rate is 0.3-0.5 mL/min. Hyposalivation is defined as <0.1 mL/min (unstimulated) or <0.5 mL/min (stimulated).

Reference: Neville – Oral and Maxillofacial Pathology, 4th ed., 2016