This section is from the book "Dental Medicine. A Manual Of Dental Materia Medica And Therapeutics", by Ferdinand J. S. Gorgas. Also available from Amazon: Dental Medicine.
Hypercementosis or Dental Exostosis is indicated by an uneasy sensation in the affected tooth, followed by a gnawing pain, which in some cases, assumes a severe neuralgic character, especially when the deposit of cementum on the root is of considerable size, in which case there is a prominence apparent on the side of the alveolar ridge.
During the early stages of this affection, the administration of large doses of iodide of potassium, and the application of counter-irritants, such as a saturated tincture of iodine or cantharidal collodion, have been suggested, to arrest the deposit and cause absorption. When the deposit is large and productive of pain and inconvenience, the removal of the affected tooth is inevitable.
Caused by hypertrophy of the inferior dental nerve in aged persons in the absence of all the teeth, after the nerve makes its exit through the dental foramen. The remedy is a saddle-shaped plate for the artificial denture worn, so that the pressure is distributed to surrounding parts and not exerted upon the nerve as it passes out of the foramen.