Avulsed Tooth Storage Temperature — NDEB AFK MCQ
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Correct answer: D — Refrigerator temperature (4°C)
Cold milk (4°C, refrigerator temperature) is the recommended storage medium for avulsed teeth when HBSS is not available. Cold temperature slows cellular metabolism, reducing PDL cell death. Milk maintains PDL cell viability for up to 6 hours (compared to 1-2 hours in saliva and minutes in water). The osmolality and pH of milk are compatible with cell survival. UHT/pasteurised whole milk is preferred over skim milk due to higher protein content.
Reference: IADT – Guidelines for Management of Traumatic Dental Injuries, 2020