Objectives: The severity of jawbone atrophy differs among individuals and even within an individual. This study investigated the relationship between vertical mandibular bone atrophy and the number of remaining teeth in elderly Indonesian individuals. Material and methods: A total of 148 panoramic radiographs of patients aged ≥ 50 years were selected from dental records at the Radiology Department, Dental Hospital Faculty of Dentistry, Universitas Indonesia, in 2017. To measure vertical mandibular bone atrophy, a vertical line was created running from the crest of the alveolar ridge to the most inferior point of the mandibular inferior cortex through the center of the mental foramen. Subjects were first divided into four groups based on the number of remaining teeth: group I had 1-8 remaining teeth, group II had 9-16, group III had 17-24, and group IV had 25-32. Results: The number of remaining teeth was significantly associated with vertical mandibular bone atrophy. Mean differences and standard deviations for vertical mandibular bone atrophy were significantly higher in groups III and IV patients than in group I and II patients (group I vs. group III: 5.2 ± 1.7, p = 0.016; group I vs. group IV: 5.8 ± 1.6, p = 0.005; group II vs. group III: 3.2 ± 1.1, p = 0.023; and group II vs. group IV: 3.8 ± 1.1, p = 0.003). Patients with fewer remaining teeth were 1.78 times more at risk for a decrease in their mandibular bone volume than those with more remaining teeth. Males were 1.78 times more likely to have a higher mandibular bone volume than females. Conclusion: Mandibular bone atrophy was significant in patients with fewer than half of the total number of teeth remaining.
Objectives: This study aimed to analyze subchondral cyst on the mandibular condyle using fractal dimension (FD) measurement on a panoramic radiograph. Methods: This retrospective study examined 15 patients aged 24 to 75 years who had undergone panoramic radiography and cone-beam computed tomography on both sides of the mandibular condyles, between January 2013 and November 2017, in the Oral and Maxillofacial Radiology Clinic, Dental Hospital, Mahidol University. These 15 patients, all of whom had a subchondral cyst on one side of the mandibular condyle, constituted both the study and control groups: the 15 affected sides constituted the study group, and the 15 unaffected sides constituted the control group. The FD of both groups was calculated by two investigators using ImageJ version 2.0x. Results: The average age of the subjects was 47.47 ± 15.99 years. The mean FD value was 1.306 ± 0.133 in the study group and 1.409 ± 0.858 in the control group. The FD values were significantly different between these groups (p-value 0.016). Conclusion: The FD values of mandibular condyle were lower in patients with subchondral cysts than in healthy patients. The fractal analysis provided clinicians with extra information regarding the condition of the subchondral cyst as an early sign of osteoarthritis on panoramic radiographs.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.