Occlusal disharmony can present in a variety of forms. It affects both very young and very old patients. Occlusal disharmony can directly cause problems within the stomatognathic system, or indirectly be the result of another condition. Moreover, occlusal disharmony may be implicated in conditions of multi-factorial origin such as mandibular pain disharmony can directly cause problems within the stomatognathic system, or indirectly be the result of another condition. treatment, prevent complications, and often yield improved results. In the last decade rapid technological advance has resulted in many testing procedures becoming available to supplement the traditional diagnostic methods. However, this technological development has been such that practising dentists will have difficulty in keeping up with the use of the newer diagnostic instrumentation. Advanced education will be required if dentists are to utilize the instrumentation to its full capability both at the diagnostic and therapeutic levels. It is also likely that the amount of expertise required to utilize the available technology will further emphasise the necessity of diagnosis at the team level for many of the more complex occlusal disharmonies.