My 14 year old son started having severe pain in his teeth when we started descending on the airplane this afternoon. He spit out a small amount of mucus and felt a litter better. He had taken a Zyrtec prior to traveling. The pain calmed down for about an hour or 2 but is now hurting him again.  Had teeth checked and X-rays  a month or 2 back so I doubt it is a cavity.
Hello thanks for consulting at Chat Doctor.it could Barodontalgia, commonly known as tooth squeeze (aerodontalgia), is a pain in tooth caused by a change in atmospheric pressure. The pain usually ceases at ground level. The most common victims are SCUBA divers because in deep dives pressures can increase by several atmospheres and military pilots because of rapid changes. Barodontalgia is a symptom of dental disease, Indeed, most of the common oral pathologies have been reported as possible sources: dental caries, defective tooth restoration, pulpits, pulp necrosis, apical periodontitis, periodontal pockets, impacted teeth, and mucous retention cysts. Hence please consult a dentist since it could be teeth problem.hope it helps, tc