Gołębiowski Mikołaj, Świątkowska Agnieszka, Pastuszak Przemysław, Rahnama Mansur
Department of Jaw Orthopedics, Medical University of Lublin, 20-093 Lublin, Poland.
Department of Oral Surgery, Medical University of Lublin, 20-093 Lublin, Poland.
Diagnostics (Basel). 2023 Mar 22;13(6):1199. doi: 10.3390/diagnostics13061199.
Nasolabial angle is commonly used to assess the soft tissue profile of the subnasal region. The aim of this retrospective study was to evaluate the relationship between the nasolabial angle, the inclination of the lower border of the nose and upper lip, upper incisor inclination and upper lip thickness. A sample of 142 female adolescents aged 13-18 years was chosen. A modified cephalometric analysis was performed with the nasolabial angle, and its components were traced according to Fitzgerald's method. All analysed parameters showed a statistically significant correlation with the nasolabial angle (NLA). The highest correlation was found for the labial (L/FH) and nasal (N/FH) components of the nasolabial angle, respectively. Upper incisor inclinations (1+:SN, U1FA) and upper lip thickness (ULT) had a stronger correlation with L/FH than NLA, but no correlation was found between these parameters and N/FH. Upper lip thickness did not influence the relationship between incisor inclination and NLA or L/FH. The position of the upper incisors and upper lip thickness influence the nasolabial angle indirectly through its labial component (L/FH). Therefore, it seems purposeful to assess the nasolabial angle as a sum of two independent angles, of which only one (L/FH) can be influenced by orthodontic treatment.
鼻唇角通常用于评估鼻下区域的软组织轮廓。这项回顾性研究的目的是评估鼻唇角、鼻下缘与上唇的倾斜度、上切牙倾斜度和上唇厚度之间的关系。选取了142名年龄在13至18岁的女性青少年作为样本。采用改良的头影测量分析法测量鼻唇角，并根据菲茨杰拉德方法描绘其组成部分。所有分析参数均与鼻唇角（NLA）呈显著统计学相关性。分别在鼻唇角的唇部（L/FH）和鼻部（N/FH）组成部分中发现了最高的相关性。上切牙倾斜度（1+:SN，U1FA）和上唇厚度（ULT）与L/FH的相关性比与NLA的更强，但这些参数与N/FH之间未发现相关性。上唇厚度并未影响切牙倾斜度与NLA或L/FH之间的关系。上切牙的位置和上唇厚度通过其唇部组成部分（L/FH）间接影响鼻唇角。因此，将鼻唇角评估为两个独立角度之和似乎是有意义的，其中只有一个角度（L/FH）会受到正畸治疗的影响。
