Department of Oral Pathology and Forensic Dentistry, Maharajgunj Medical Campus, Institute of Medicine, Maharajgunj, Kathmandu, Nepal.
Department of Forensic Medicine, Lumbini Medical College, Tansen, Palpa, Nepal.
JNMA J Nepal Med Assoc. 2022 Jun 1;60(250):525-528. doi: 10.31729/jnma.7416.
Mandibular condyle is a prominent structure in the mandible, which forms the temporomandibular joint. An oval-shaped condyle is considered to be present with a normal temporomandibular joint and any morphological variation of the condyle is assumed to be pathologic in temporomandibular disorders. The aim of the study was to find out the prevalence of oval shaped mandibular condyle among orthopantomogram radiographs of patients visiting the tertiary care centre.
A descriptive cross-sectional study was performed among 752 condyles visiting a tertiary care center from November 29, 2021 to April 1, 2022. The ethical approval was taken from the Institutional Review Committee (Reference number: 184 (6-11) 078/079) before conducting the study. Convenience sampling was done. The radiographs were first examined and the observed morphological type of mandibular condyle was noted. Data analysis was done using Statistical Package for the Social Sciences version 22.0. Point estimate at 95% Confidence Interval was calculated along with frequency and proportion for binary data.
The prevalence of oval shaped mandibular condyles out of 752 condyles was 416 (55.32%) (51.77-58.87 at 95% Confidence Interval). The oval-shaped condyle on the right side was 205 (54.52%) and on the left side was 211 (56.12%).
The prevalence of oval shaped condyles among patients in this study was similar to the studies done in similar settings.
condyle; mandible; Nepal; X-ray.
下颌骨髁突是下颌骨的一个突出结构,它构成了颞下颌关节。正常的颞下颌关节中存在一个椭圆形的髁突,而髁突的任何形态变异都被认为是颞下颌关节紊乱的病理表现。本研究旨在确定在访问三级保健中心的患者的全景 X 光片中,椭圆形下颌骨髁突的患病率。
这是一项在 2021 年 11 月 29 日至 2022 年 4 月 1 日期间访问三级保健中心的 752 个髁突中进行的描述性横断面研究。在进行研究之前,已获得机构审查委员会的伦理批准(参考编号:184(6-11)078/079)。采用便利抽样法。首先检查 X 光片,并记录下颌骨髁突的观察到的形态类型。使用社会科学统计软件包 22.0 进行数据分析。计算了 95%置信区间的点估计值以及二进制数据的频率和比例。
在 752 个髁突中,椭圆形下颌骨髁突的患病率为 416 个(55.32%)(95%置信区间为 51.77-58.87)。右侧椭圆形髁突为 205 个(54.52%),左侧为 211 个(56.12%)。
本研究中患者的椭圆形髁突患病率与在类似环境中进行的研究相似。
髁突;下颌骨;尼泊尔;X 射线。