Rafael Crovetto-Martínez1, Carlos Vargas2, Iñigo Lecumberri2, Amaia Bilbao3, Miguel Crovetto-De la Torre4, Jaime Whyte-Orozco5. 1. Department of Stomatology II, Faculty of Medicine and Dentistry, University of the Basque Country/EHU, Getxo, Spain. Electronic address: Macdlt@telefonica.net. 2. Basurto University Hospital, Vizcaya, Spain. 3. Research Unit of Basurto University Hospital, Health Services Research on Chronic Patients Network (REDISSEC), Vizcaya, Spain. 4. Department of Otorhinolaryngology, Basurto University Hospital (UPV/EHU), Vizcaya, Spain. 5. Faculty of Medicine, Department of Human Anatomy and Histology, University of Zaragoza, C/ Domingo Mirall s/n, Zaragoza, Spain.
Abstract
OBJECTIVES: Dehiscence of the superior semicircular canal (SSC) has been associated with alteration of the temporomandibular joint, although data explaining this association are lacking. The present study examined the correlations between the presence of dehiscences and thickness of the bone covering the SSC and the roof of the glenoid fossa (RGF). STUDY DESIGN: Computed tomography was used in a cross-sectional analysis of the presence of dehiscences and thickness of the bone overlying the SCC and RGF in 156 temporal bones of 78 patients. The correlations of the presence of dehiscences in the SSC and ipsilateral RGF and the thickness of bone covering the SSC and RGF were analyzed by using the χ2 or Fisher's exact test. The relationship between the thickness of the bone overlying the SCC and RGF was analyzed by using the Spearman correlation coefficient and the Kruskal-Wallis test. The relationship between the thickness of the RGF and the covering of the SCC and patient age and gender was analyzed with the general linear model. RESULTS: Significant correlations were found between the presence of dehiscences and thickness of the bone overlying the SSC and RGF (P < .001). CONCLUSIONS: There is a morphologic relationship between the structure of the SSC and RGF.
OBJECTIVES: Dehiscence of the superior semicircular canal (SSC) has been associated with alteration of the temporomandibular joint, although data explaining this association are lacking. The present study examined the correlations between the presence of dehiscences and thickness of the bone covering the SSC and the roof of the glenoid fossa (RGF). STUDY DESIGN: Computed tomography was used in a cross-sectional analysis of the presence of dehiscences and thickness of the bone overlying the SCC and RGF in 156 temporal bones of 78 patients. The correlations of the presence of dehiscences in the SSC and ipsilateral RGF and the thickness of bone covering the SSC and RGF were analyzed by using the χ2 or Fisher's exact test. The relationship between the thickness of the bone overlying the SCC and RGF was analyzed by using the Spearman correlation coefficient and the Kruskal-Wallis test. The relationship between the thickness of the RGF and the covering of the SCC and patient age and gender was analyzed with the general linear model. RESULTS: Significant correlations were found between the presence of dehiscences and thickness of the bone overlying the SSC and RGF (P < .001). CONCLUSIONS: There is a morphologic relationship between the structure of the SSC and RGF.