Cone-beam computed tomographic study of the persistent foramen tympanicum according to age, sex, and skeletal patterns

Herreira-Ferreira, Matheus; Tolentino, Elen de Souza; Silva, Mariliani Chicarelli da; Walewski, Letícia Ângelo; Iwaki, Lílian Cristina Vessoni

doi:10.1016/j.bjoms.2020.06.003

Cited by 2 publications

(2 citation statements)

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“…Due to its anatomical proximity, TMDs can also affect the FT. 14 FT typically closes at 5 years of age, depending on sex, age and ethnicity. 15 The prevalence of FT varies between 4.6% and 22.7%. 1,16,17 In the present study, unilateral or bilateral FT was present in 13.5%…”

Section: Discussionmentioning

confidence: 99%

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Perspective on Temporomandibular Joint Disorder: Foramen Tympanicum Defect

Ozmen,

Satir,

Icen

2024

J of Oral Rehabilitation

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BackgroundForamen tympanicum (FT) is a defect located anterior‐inferior to the external acoustic meatus. We evaluated its prevalence, location, size, and relationship with temporomandibular joint (TMJ) disorders.MethodsCone beam computed tomography was performed for 200 patients who presented to the Karamanoğlu Mehmetbey University Ahmet Keleşoğlu Faculty of Dentistry Hospital. The location and size of the FT in the axial and sagittal planes were evaluated. Descriptive statistics were used to compare the study parameters among age and sex groups. Patients with FT were reevaluated by two maxillofacial surgeons at the study centre.ResultsIn total, 200 images from 400 joints were examined. Unilateral and bilateral FT (19 [9.5%] and 8 [4%], respectively) was detected in 35 (17.5%) images from 27 (13.5%) patients. Examinations were performed for TMJ disorders in 24 patients. Participants with bilateral defects had the highest rates of presence of sounds and ear pain on the left and right sides (p < .05).ConclusionForamen tympanicum can lead to TMJ disorders and spread of tumours or infections from the external auditory canal to the infratemporal fossa. The increased prevalence of such disorders in patients with bilateral FT suggests an association between them.

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