Gumussoy Ismail, Duman Suayip Burak, Miloglu Ozkan, Demirsoy Mustafa Sami, Dogan Ayhan, Abdelkarim Ahmed Z, Guller Mustafa Taha
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Sakarya University, 54100 Sakarya, Turkey.
Department of Dentomaxillofacial Radiology, Faculty of Dentistry, İnonu University, 44000 Malatya, Turkey.
Diagnostics (Basel). 2024 Nov 28;14(23):2688. doi: 10.3390/diagnostics14232688.
Since the formation of skeletal malocclusions is closely linked to general craniofacial development, it is crucial to understand the anatomy and growth patterns of the skull base. This study aimed to assess the morphometry of the occipital condyle (OC) on CBCT scans of Class III skeletal malocclusion subjects and compare the findings with those of skeletal Class I malocclusion subjects.
A retrospective analysis was performed on CBCT images based on predefined inclusion and exclusion criteria. The sample consisted of 76 CBCT images of 38 skeletal Class III patients and 38 skeletal Class I patients. CBCT scans were used to measure mesiodistal width, sagittal length, coronal height, effective height of OC, and sagittal OC angle. Statistical analyses were conducted with RStudio software.
Significant differences were found in sagittal OC angle and sagittal length of OC between the study groups ( < 0.001). In other metrics, such as coronal height of OC, effective OC height, and mesiodistal width of OC between the groups, no significant differences were found. Class III malocclusions exhibited significantly reduced sagittal OC angle and sagittal length of OC compared to Class I malocclusions. The left side showed a significantly larger sagittal OC angle than the right side ( = 0.002).
This preliminary study identified reduced sagittal angle and sagittal length of OC in patients with Class III skeletal malocclusion. Clinicians should recognize potential differences in OC morphometry in patients with skeletal malocclusions. Future studies involving larger populations are recommended to further investigate the relationship between skeletal malocclusions and posterior cranial base structures, including the OC.
由于骨性错牙合畸形的形成与整个颅面发育密切相关，了解颅底的解剖结构和生长模式至关重要。本研究旨在评估III类骨性错牙合畸形患者CBCT扫描中枕髁（OC）的形态测量学特征，并将结果与I类骨性错牙合畸形患者进行比较。
根据预先定义的纳入和排除标准对CBCT图像进行回顾性分析。样本包括38例III类骨性患者和38例I类骨性患者的76张CBCT图像。使用CBCT扫描测量OC的近远中宽度、矢状长度、冠状高度、有效高度以及矢状OC角。使用RStudio软件进行统计分析。
研究组之间在矢状OC角和OC矢状长度上存在显著差异（<0.001）。在其他指标上，如两组之间OC的冠状高度、有效OC高度和OC近远中宽度，未发现显著差异。与I类错牙合畸形相比，III类错牙合畸形的矢状OC角和OC矢状长度显著减小。左侧矢状OC角显著大于右侧（=0.002）。
这项初步研究发现III类骨性错牙合畸形患者的OC矢状角和矢状长度减小。临床医生应认识到骨性错牙合畸形患者OC形态测量学的潜在差异。建议未来开展涉及更大样本量人群的研究，以进一步探究骨性错牙合畸形与包括OC在内的后颅底结构之间的关系。
