First aid expert warns about jaw dislocation from excessive mouth opening

First aid expert Miguel Assal warns that excessive mouth opening can cause jaw dislocation, leaving the mouth stuck open. This occurs when the jawbone slips out of its joint. It can happen unintentionally while eating, yawning, or making sudden movements. Assal advises against forcing the mouth open too wide and recommends professional help for reduction, especially for first-time occurrences.