This investigation has been focused towards the study of the different types of dental pains that occur due to atmospheric pressure variations. In order to achieve this, we have worked with a group of 100 pilots, whos' ages ranged between 17 and 45 years, and which went through a physiological training at the Aerospacial Medicine Department of the Chilean Air Forces' Health Division. This was complemented by a thoretical course and a complete medical-dental check up, two flights in hipobaric chamber, one hipoxic flight and one rapid decompression flight. Different types of disbarisms were observed due to variations in atmospheric pressure, this showing that barodontalgia is one of the less frequent disbarism (1%). The investigation was completed by filling human and plastic teeth with now-days commonly used materials, intentionally leaving an air bubble beneath some of those fillings. It was proved that the theory which explains barodontalgia as the expansion of a gas in a cavity, is not valid by itself. Correlating the results obtained with human beings, brought into evidence that the appearance of this physiopathological phenomenon requires a pre-existing and unmanifested pathology, which will create an hipoxic environment in the pain causing tooth