Department of Oral and Maxillofacial Surgery, 1st Faculty of Medicine and General University Hospital Prague, Praha, Czech Republic.
Department of Oral and Maxillofacial Surgery, 1st Faculty of Medicine and General University Hospital Prague, Praha, Czech Republic; Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic.
Int J Oral Maxillofac Surg. 2023 Jan;52(1):44-50. doi: 10.1016/j.ijom.2022.05.008. Epub 2022 Jun 6.
Condylar hyperplasia is one of the causes of facial asymmetry and malocclusion, characterized by enlargement of the lower jaw due to excessive condyle growth activity. The aim of this study was to use micro-computed tomography (micro-CT) to evaluate the bone architecture of the condylar head and determine whether there are differences between patients with various forms of unilateral condylar hyperplasia (UCH): hemimandibular hyperplasia, elongation, and mixed form. The cohort consisted of 28 patients with a mean age of 21.9 years. All patients underwent surgical treatment (condylar shaving) for active pathological growth activity. The portion of the condylar head removed was imaged by micro-CT and subsequently evaluated. Micro-CT imaging and semiquantitative and quantitative evaluation of the bone structure (percentage bone volume, surface density, trabecular thickness, trabecular separation, degree of anisotropy, and porosity of the subchondral bone) did not reveal significant differences between the individual types of condylar hyperplasia (P > 0.05). There were no significant differences in bone structure between the anterior and posterior portions of the condylar head. No statistically significant differences between individual groups of UCH were found in the micro-CT evaluation of the condylar head bone architecture.
髁突增生是导致面部不对称和咬合不正的原因之一，其特征为由于髁突过度生长导致下颌骨增大。本研究旨在使用微计算机断层扫描（micro-CT）评估髁突头部的骨结构，并确定不同类型单侧髁突增生（UCH）患者之间是否存在差异：半侧下颌骨增生、伸长和混合型。该队列包括 28 名平均年龄为 21.9 岁的患者。所有患者均因病理性生长活动而接受手术治疗（髁突切除术）。通过 micro-CT 对切除的髁突头部进行成像并随后进行评估。微 CT 成像和骨结构的半定量和定量评估（骨体积百分比、表面密度、小梁厚度、小梁间隔、各向异性程度和软骨下骨孔隙度）未显示出各类型 UCH 之间存在显著差异（P＞0.05）。髁突头部的骨结构在前部和后部之间没有显著差异。在 UCH 的各个组别之间，在髁突头部骨结构的 micro-CT 评估中未发现统计学上显著差异。
