ABSTRACT
Purpose
To analyze the audiological findings in individuals with temporomandibular disorder and compare these findings with individuals without temporomandibular disorder.
Methods
The sample was composed by 39 adult participants, both genders, with previous diagnosis of temporomandibular disorder (study group) and 39 adult participants, without temporomandibular disorder (control group). All the participants were submitted to audiometry including high frequencies, Immittance acoustic (Tympanometry and contralateral acoustic reflexes) and distortion product evoked otoacoustic emissions.
Results
The prevalence of temporomandibular disorder on female gender was observed, average age was over forty years old. In the audiometry, it was observed the incidence of hearing loss of a sensorineural and conductive type in the Study Group, besides worst hearing thresholds in high frequencies. In both groups, there was a bigger incidence of a type A tympanometric curve, as well as there were differences between the groups in the research of the ipsilateral and contralateral acoustic reflex and in the recording of distortion product evoked otoacoustic emissions.
Conclusion
It’s possible to conclude that individuals with temporomandibular disorder show worst results in the hearing thresholds, in the tympanometry, in the ipsilateral and contralateral acoustic reflexes, in the evoked otoacoustic emissions, when compared to the control group.
Keywords:
Hearing tests; Temporomandibular articulation; Articulation disorders; Hearing; Hearing loss