He Shumin, Gu Deao, Jiang Chengyue, Yi Yingjie, Su Xiaojie, Fan Ziqing, Min Li, Yang Xudong, Liu Chao
Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing Stomatological Hospital, Nanjing University, Zhongyang Road 30, Nanjing, 210008, China.
Department of Orthodontics, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing Stomatological Hospital, Nanjing University, Zhongyang Road 30, Nanjing, 210008, China.
BMC Oral Health. 2025 Sep 26;25(1):1456. doi: 10.1186/s12903-025-06845-y.
This study aimed to investigate the morphological characteristics of the coronoid process (CP) and condyle in patients with long-face morphology (LF) and evaluate their correlations, aiming to identify potential morphological predictors for clinical diagnosis and treatment planning.
This retrospective study analyzed cone-beam computed tomography (CBCT) data from 68 LF patients and 69 control subjects. Nineteen parameters of the CP and condyle were evaluated in three dimensions, encompassing length, angle, curvature, and volume. Statistical analyses included chi-square and t-tests for group comparisons. Stepwise binary logistic regression and receiver operating characteristic (ROC) analysis were implemented to identify and validate independent predictors of LF. Relationships between CP and condylar parameters were examined using Pearson or Spearman correlation analyses. The intraclass correlation coefficient (ICC) was utilized to assess intraexaminer reliability.
The analysis revealed significant differences in width of the articular fossa (AFW), condylar anteroposterior diameter (CAD) and coronoid parameters between the LF and control groups (P < 0.05). Logistic regression identified coronoid volume (OR = 0.979, 95% CI 0.97-0.99), the sagittal coronoid angle (OR = 1.339, 95% CI 1.18-1.52), the anterior distance to the CP apex (OR = 0.70, 95% CI 0.55-0.92), the coronal coronoid angle (OR = 0.731, 95% CI 0.60-0.90), and the coronoid base length (OR = 2.747, 95% CI 1.86-4.05) as independent predictors of LF. Significant correlations were identified between the sagittal condylar parameters and multiple coronoid parameters (P < 0.05).
LF patients demonstrate distinct morphological alterations in both the CP and condyle. The dimensions and angular characteristics of the CP may function as auxiliary indicators for early identification and treatment planning in patients with LF morphology.
本研究旨在调查长面形态（LF）患者的冠状突（CP）和髁突的形态特征，并评估它们之间的相关性，以确定临床诊断和治疗计划的潜在形态学预测指标。
本回顾性研究分析了68例LF患者和69例对照受试者的锥形束计算机断层扫描（CBCT）数据。在三个维度上评估了CP和髁突的19个参数，包括长度、角度、曲率和体积。统计分析包括用于组间比较的卡方检验和t检验。采用逐步二元逻辑回归和受试者工作特征（ROC）分析来识别和验证LF的独立预测指标。使用Pearson或Spearman相关分析检查CP和髁突参数之间的关系。利用组内相关系数（ICC）评估检查者内信度。
分析显示，LF组和对照组在关节窝宽度（AFW）、髁突前后径（CAD）和冠状突参数方面存在显著差异（P < 0.05）。逻辑回归确定冠状突体积（OR = 0.979，95% CI 0.97 - 0.99）、冠状突矢状角（OR = 1.339，95% CI 1.18 - 1.52）、到CP顶点的前向距离（OR = 0.70，95% CI 0.55 - 0.92）、冠状突冠状角（OR = 0.731，95% CI 0.60 - 0.90）和冠状突基部长度（OR = 2.747，95% CI 1.86 - 4.05）为LF的独立预测指标。在髁突矢状参数和多个冠状突参数之间发现了显著相关性（P < 0.05）。
LF患者在CP和髁突上均表现出明显的形态改变。CP的尺寸和角度特征可能作为LF形态患者早期识别和治疗计划的辅助指标。
