Donaldson D, Kroening R
J Am Dent Assoc. 1979 Dec;99(6):961-6. doi: 10.14219/jada.archive.1979.0421.
Patients with chronic orofacial pain must be treated with methods different from those used with patients with acute pain. If different methods are not used, the characteristics of chronic pain may become firmly entrenched. Dentists should be aware of the various methods of treatment for this separate pain entity.