Abstract
ABSTRACT Objective: to verify the relationship between otological symptoms and parafunctional habits in individuals with temporomandibular joint dysfunction. Methods: evaluations were based on the clinical records of 768 patients treated at a temporomandibular joint diagnostic center from 2010 to 2016. The inclusion criteria were completely filled out charts of adult patients (> 18 years of age) and the final sample comprised 516 clinical records. The presence/absence of parafunctional habits and otological symptoms (tinnitus, hearing impairment, dizziness, the sensation of plugged ears and imbalance) was recorded. Results: statistically significant associations were found between otological symptoms and both sex and the presence of parafunctional habits, as otological symptoms were more prevalent among women and individuals with at least one parafunctional habit. Conclusion: in the present sample, otological symptoms were positively associated with parafunctional habits in individuals with temporomandibular joint dysfunction.
Highlights
The American Academy of Orofacial Pain defines temporomandibular joint dysfunction or temporomandibular disorders (TMD) as a set of clinical conditions that affect the masticatory muscles, the temporomandibular joint and associated structures
Otological symptoms are frequent in individuals with TMD, and the most commonly cited in the literature are tinnitus, dizziness, vertigo, earache and a sensation of ear fullness.[1,5,6,7]
Significant associations were found between otological symptoms and both sex and the presence of parafunctional habits, as otological symptoms were more prevalent among women and individuals with at least one parafunctional habit (Table 1)
Summary
The American Academy of Orofacial Pain defines temporomandibular joint dysfunction or temporomandibular disorders (TMD) as a set of clinical conditions that affect the masticatory muscles, the temporomandibular joint and associated structures. The auditory system can be affected and variety of otological symptoms are reported.[1,2,3] TMD has a multifactor etiology, which includes trauma, degenerative problems, parafunctional habits, an abnormal position of the condyle and joint disc, excessive activity of the masticatory muscles as well as social and psychological variables.[4]. Otological symptoms are frequent in individuals with TMD, and the most commonly cited in the literature are tinnitus (ringing in the ears), dizziness, vertigo, earache and a sensation of ear fullness.[1,5,6,7] Some theories state that hyperactivity of the masticatory muscles generates problems in the stomatognathic system and, due to the anatomical proximity, the inner ears can be affected.[2,8]
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