Definition
Tooth pain caused by changes in atmospheric pressure during flight, typically experienced during climb or descent when trapped gas inside a tooth — usually beneath a filling, in a decayed area, or within an abscess — expands or contracts as cabin pressure changes.
Plain English
A toothache that shows up when you fly, caused by air pressure changes acting on a small pocket of gas trapped inside a tooth.
Context Anchor
Seen in aviation medical discussions, especially when a pilot has tooth pain during climb, descent, or flight in an unpressurized aircraft.
Derivation
From Greek baros meaning 'pressure' or 'weight,' Latin dent- meaning 'tooth,' and Greek algia meaning 'pain.' Together: pressure-related tooth pain. The derivation tells you exactly what it is — pain in a tooth caused by pressure change.
Why Pilots Care
The pain can distract a pilot and reduce focus during critical phases of flight.
Grounding Statement
As the aircraft climbs and outside pressure drops, any small gas pocket sealed inside a tooth expands — pressing on the nerve and causing pain that disappears once pressure equalises on descent.
Intuition Check
Do not read this as just any toothache. Barodontalgia is specifically tooth pain connected to pressure changes.
Example Sentence 1
The pilot reported a sharp pain in a molar during climb through 8,000 feet, and the flight surgeon diagnosed barodontalgia caused by a failing filling.
Example Sentence 2
Regular dental exams before high-altitude flights help reduce the chance of barodontalgia.