Examination of foramen tympanicum: an anatomical study using cone-beam computed tomography
| Autor: | Ayşe Zeynep Zengin, Yeşim Deniz, Gediz Geduk |
|---|---|
| Přispěvatelé: | OMÜ, Zonguldak Bülent Ecevit Üniversitesi |
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Cone beam computed tomography Histology Adolescent Ear Middle Dehiscence Auditory canal dental volumetric tomography Dental volumetric tomography Foramen of Huschke stomatognathic system Temporal bone Foramen Humans Medicine Foramen tympanicum Cone-beam computed tomography (CBCT) cone-beam computed tomography (CBCT) business.industry Infratemporal fossa Dental imaging Temporal Bone Anatomy Cone-Beam Computed Tomography Temporomandibular joint medicine.anatomical_structure foramen of Huschke foramen tympanicum Female business Ear Canal |
| Zdroj: | Folia Morphologica. 77:335-339 |
| ISSN: | 1644-3284 0015-5659 |
| DOI: | 10.5603/fm.a2017.0078 |
| Popis: | geduk, gediz/0000-0002-9650-2149 WOS: 000436178400019 PubMed: 28868610 Background: The foramen tympanicum (FT) is an osseous dehiscence of the temporal bone and usually closes by the age of 5 years. The foramen is located posteromedial to the temporomandibular joint and anteroinferior of the external auditory canal. The aim of this study is to define the prevalence, location and size of the foramen. Materials and methods: We retrospectively examined 200 cone-beam computed tomography (CBCT) images (400 ears). We used a CBCT dental imaging system (GALILEOS, Sirona Dental Systems, Bensheim, Germany) working at 15-30 mA and 98 kV. We noted size and location (unilateral and bilateral) of the present FT. Results: Foramen tympanicum was determined in 11.5% of 200 patients (they had FT at least on one side of the head). This was bilateral in 5 (2.5%) patients. Prevalence of the FT was significintly higher in females (8%) than in males (3.5%). FT was found more frequently on the left side (7.5%) than on the right side (4%). Mean axial diameter was 1.13 mm (range 0.23-4.43 mm), and mean sagittal diameter was 1.44 mm (range 0.22-3.99 mm). Conclusions: Considering that FT was present in 11.75% of patients, radiologists and clinicians should be aware of the possible presence of this defect. It is known that this developmental dehiscence may cause herniation of temporomandibular joint, formation of salivary otorrhea, and spread of tumour or infection to the infratemporal fossa from external auditory canal. This study showed that CBCT may be preferred for imaging these conditions. |
| Databáze: | OpenAIRE |
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