Radiologic correlation between the thickness of the roof of the glenoid fossa and that of the bony covering of the superior semicircular canal

Crovetto-Martínez, Rafael; Vargas, Carlos; Lecumberri, Iñigo; Bilbao, Amaia; Torre, Miguel Crovetto-De la; Whyte-Orozco, Jaime

doi:10.1016/j.oooo.2017.12.008

Cited by 6 publications

(8 citation statements)

References 33 publications

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“…Former studies revealed an association between SSCD and the dehiscence of the tegmen tympani (TT) [ 16 , 35 ] Fraile Rodrigo et al showed that TT and SSC had the same embryological origin, by sharing a common layer of external periosteum [ 36 ]. In the study by Crovetto et al, the mean RGF was 0.72 ± 0.57 mm [ 22 ]. A very similar average RGF was also obtained in the present study (0.75 ± 0.51 mm).…”

Section: Discussionmentioning

confidence: 99%

“…A very similar average RGF was also obtained in the present study (0.75 ± 0.51 mm). Two studies conducted in 2018 and 2020 confirmed the relationship between the dehiscence of the RGF and SSCD [ 22 , 23 ], to explain this relationship, Crovetto et al recommended a connection in the embryological development of these structures [ 22 ]. Moreover, Whyte et al also found a significant interaction outcome of TT and SSC statuses on RGF thickness [ 37 ].…”

Section: Discussionmentioning

confidence: 99%

“…Under standard viewing conditions, all images were reviewed by authors on the presence or absence of SSCD as well as the thickness of the bone covering the semicircular canal. The images were reformatted into the Pöschl transverse pyramidal plane for an easier and more reliable assessment of SSCD [ 14 , 22 ]. In these planes, SSC seemed like a ring.…”

Section: Methodsmentioning

confidence: 99%

“…Crovetto et al also stated that SSCD was more common in menopausal women [ 18 ]. Moreover, just two studies found a correlation between the roof thickness of the glenoid fossa and the thickness of the bone masking the SSC [ 22 , 23 ]. Glenoid fossa (GF) refers to a depression in the temporal bone that articulates with the mandibular condyle.…”

Section: Introductionmentioning

confidence: 99%

“…Glenoid fossa (GF) refers to a depression in the temporal bone that articulates with the mandibular condyle. The roof of GF is a thin plate of bone placed between the temporomandibular joint (TMJ) complex and the middle cranial fossa [ 22 ]. Kurt et al indicated that patients with TMJ symptoms were at a higher risk of SSCD [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Superior Semicircular Canal Morphology and Its Relationship with Glenoid Fossa Roof Thickness Using Cone Beam Computed Tomography

Davvaz

Hasani

Haghnegahdar

2022

Radiology Research and Practice

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Purpose. This study aimed to evaluate the bone thickness of the superior semicircular canal (SSC) roof and its relationship with the roof thickness of the glenoid fossa (RGF). Methods. The cone beam computed tomography (CBCT) images of 280 patients (560 temporal regions) were surveyed. The lowest thickness of the SSC roof was measured and categorized based on the radiological patterns of the Cisneros et al. classification. The thickness of GF and the presence of dehiscence in this part were determined, as well. The relationship between the thickness of the GF roof and the bone thickness covering the SSC was also assessed. Results. The mean thickness of the SSC roof was 0.93 ± 0.48 mm, with no significant difference among different age groups and genders ( p > 0.05 ). However, superior semicircular canal dehiscence (SSCD) was more prevalent among females over 45 years old. Similarly, the individuals with the dehiscence of the GF roof had a 12.93-fold higher chance of SSCD development. Conclusions. The results indicated that the thickness of the bone overlying the SSC was significantly related to the roof thickness of the GF. However, an increase in age resulted in no significant change in the bone thickness of the SSC roof. Gender also had no role in changing the thickness of the bone overlying the SSC. Considering the decrease in the thickness of the SSC roof among females over 45 years of age, menopause may be responsible for this occurrence as well as for the increase in the prevalence of SSCD.

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