Aykağan Coşgunarslan1, Damla Soydan Çabuk2, Emin Murat Canger2. 1. Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Melikgazi, 38039, Kayseri, Turkey. aykagann@gmail.com. 2. Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Melikgazi, 38039, Kayseri, Turkey.
Abstract
OBJECTIVE: The aim of this study was to assess the internal structure of the mandibular condyles in patients with total edentulism by applying fractal analysis on cone-beam computed tomography (CBCT) images and compare with dentate subjects. METHODS: A total of 136 mandibular condyles were assessed. All CBCT images were prepared with 0.25-mm slice thickness and maximum magnification. A 64 × 64 pixel region of interest (ROI) within the trabecular bone in the center of the condyle was selected. Fractal analysis was performed using White and Rudolph's box-counting method. RESULTS: Control and study groups were age and gender-matched. The mean fractal dimension (FD) value of the study group was significantly lower compared to the control group (p < 0.01). In the study group, the mean FD value of the females was significantly lower than males (p = 0.01). For the control group, there was no significant difference between the genders for FD (p = 0.11). There was no significant difference between the age subgroups of the female study group and the male control group for FD (p = 0.22, p = 0.33). The mean FD value of the younger age subgroup was significantly higher compared to the older age subgroup in the female control and male study group (p = 0.03, p = 0.01). CONCLUSION: The internal bone structure of mandibular condyles in edentulous patients was found to be affected by edentulism. Fractal analysis can be used as an effective method for assessing temporomandibular joint health.
OBJECTIVE: The aim of this study was to assess the internal structure of the mandibular condyles in patients with total edentulism by applying fractal analysis on cone-beam computed tomography (CBCT) images and compare with dentate subjects. METHODS: A total of 136 mandibular condyles were assessed. All CBCT images were prepared with 0.25-mm slice thickness and maximum magnification. A 64 × 64 pixel region of interest (ROI) within the trabecular bone in the center of the condyle was selected. Fractal analysis was performed using White and Rudolph's box-counting method. RESULTS: Control and study groups were age and gender-matched. The mean fractal dimension (FD) value of the study group was significantly lower compared to the control group (p < 0.01). In the study group, the mean FD value of the females was significantly lower than males (p = 0.01). For the control group, there was no significant difference between the genders for FD (p = 0.11). There was no significant difference between the age subgroups of the female study group and the male control group for FD (p = 0.22, p = 0.33). The mean FD value of the younger age subgroup was significantly higher compared to the older age subgroup in the female control and male study group (p = 0.03, p = 0.01). CONCLUSION: The internal bone structure of mandibular condyles in edentulous patients was found to be affected by edentulism. Fractal analysis can be used as an effective method for assessing temporomandibular joint health.
Authors: Amanda Drumstas Nussi; Sérgio Lucio Pereira de Castro Lopes; Catharina Simioni De Rosa; João Pedro Perez Gomes; Celso Massahiro Ogawa; Paulo Henrique Braz-Silva; Andre Luiz Ferreira Costa Journal: Oral Radiol Date: 2022-05-18 Impact factor: 1.852