Sofyanti Ervina, Christy Angeline, Edwin Felix, Sitanggang Maria, Sufarnap Erliera, Radzi Zamri
Department of Orthodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia.
School of Dentistry, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia.
J Orthod Sci. 2025 Mar 25;14:6. doi: 10.4103/jos.jos_92_24. eCollection 2025.
To compare lateral cephalometric variables based on McNamara analysis between Indigenous and Chinese-Indonesian ethnic patients with skeletal class I malocclusion from Medan city.
Simple random sampling of retrospective data from pre-treatment lateral cephalograms of orthodontic adult patients of three successive generations of the Mongoloid race in Medan from 2015 to 2023. Thus, the -test and test were conducted after the normality test to compare the cephalometric analysis between Indigenous and Chinese-Indonesian ethnicities.
This cross-sectional study analyzed 32 Indigenous and 34 Chinese ethnic lateral cephalograms. There were significant differences ( < 0.05) between Indigenous and Chinese ethnic in the lower pharynx, nasolabial angle, A to N perpendicular, maxillomandibular differential, and Pog to N Perpendicular variables for skeletal parameters. There were also significant differences ( < 0.05) in nasolabial angle for the soft tissue parameter and lower pharynx for the airway parameter. Conversely, there were no significant differences ( > 0.05) between these groups in the Co-A, Co-gnathion, lower anterior facial height (LAFH), facial axis angle, and mandibular plane angle for skeletal parameters. There were also no significant differences ( > 0.05) in upper incisor to A and lower incisor to A-Pog for dental parameters. Furthermore, there were also no significant differences ( > 0.05) in cant of the upper lip for soft tissue parameters and upper pharynx for airway.
It is advisable to consider certain landmarks and reference lines based on McNamara cephalometry parameters that showed a significant difference between Indigenous and Chinese ethnic groups with skeletal class I malocclusion when determining diagnosis and formulating individualized orthodontic treatment plans for multiethnic subpopulation patients in Medan.
比较棉兰市骨骼I类错牙合的原住民和华裔印尼族患者基于麦克纳马拉分析法的头颅侧位测量变量。
对2015年至2023年棉兰市蒙古人种连续三代正畸成年患者治疗前头颅侧位片的回顾性数据进行简单随机抽样。因此，在正态性检验后进行t检验和F检验，以比较原住民和华裔印尼族之间的头颅测量分析。
这项横断面研究分析了32例原住民和34例华裔的头颅侧位片。在骨骼参数的下咽、鼻唇角、A点至N点垂线、上下颌差异以及Pog点至N点垂线变量方面，原住民和华裔之间存在显著差异（P<0.05）。在软组织参数的鼻唇角和气道参数的下咽方面也存在显著差异（P<0.05）。相反，在骨骼参数的Co-A、Co-颏下点、下前面部高度（LAFH）、面部轴角和下颌平面角方面，这些组之间没有显著差异（P>0.05）。在牙齿参数的上切牙至A点和下切牙至A-Pog点方面也没有显著差异（P>0.05）。此外，在软组织参数的上唇倾斜度和气道的上咽方面也没有显著差异（P>0.05）。
在为棉兰市的多民族亚人群患者确定诊断和制定个性化正畸治疗计划时，建议根据麦克纳马拉头颅测量参数考虑某些标志点和参考线，这些参数在骨骼I类错牙合的原住民和华裔之间显示出显著差异。
