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Kino K, Sugisaki M, Haketa T, Amemori Y, Ishikawa T, Shibuya T,Amagasa T, Shibuya T, Tanabe H, Yoda T, Sakamoto I, Omura K, MiyaokaH.(2006) Teeth contacting habit as a contributing factor to chronic pain in patients with temporomandibular disorders. J Med Dent Sci. Jun;53(2):103-9.
Many different factors are known to cause and perpetuate the symptoms of temporomandibular disorders (TMD However, the roles of parafunctional factors have not been clearly elucidated. We found one of these habits in the clinical setting. This parafunctional habit involves daily light touching of the upper and lower teeth, when the mouth is closed.
We named this habit Teeth Contacting Habit (TCH).


OBJECTIVES : To investigate the following hypotheses: 1) TCH is associated with perpetuation of chronic pain of TMD patients; 2) TCH is associated with other behavioral factors.
METHODS : Two hundred and twenty-nine TMD outpatients with chronic pain were analyzed with multivariate logistic regression models.
RESULTS : TCH was found in 52.4% of patients. Patients with TCH and pain lasting for more than four months were less likely to experience improvements in pain at the first visit (OR = 1.944, p = 0.043). Other factors associated with TCH were as follows: unilateral chewing (OR = 2.802) and involvement in a precision job (O=2.195)
CONCLUSION TCH can prolong TMD pain and is associated with other behavioral factors.

Commentary :
We said that an excessive dental stimulation (too intense and/or too durable) could generate in a stressed human :
- pains (very far from mouth and jaw)
- with or without associated troubles (tinnitus, nausea, dizziness, itching in the acoustic meatus).
Thus the website visitor may :
- strongly clench his or her teeth
- lightly and perpetually contact his or her teeth (HCD)
These two bad behaviours too may generate pains and troubles which are invalidating for the patients and deconcerting for the clinician.

Last Updated on Friday, 13 May 2011 15:41
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