Alizade Atyie Safar, Asadi Elmira, Jafari-Naeimi Alireza, Kalbassi Salmeh
Dentist in Private Practice, Vancouver, Canada.
Department of Orthodontics, Dental Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
Dent Res J (Isfahan). 2024 Jan 25;21:3. eCollection 2024.
Lip incompetence is an important issue in orthodontics. No study has evaluated the effects of the combination of headgear + lip exercises on lip incompetence. Therefore, this study was conducted.
This was a longitudinal randomized clinical trial on 29 subjects (16 controls and 13 experimental subjects). Both groups were treated with standardized activator high-pull headgear (and followed up monthly) for 6-8 months. In the experimental group, patients were also instructed to practice certain lip exercises 3 sessions a day, 5 times per session. Pre-/post-treatment interlabial gap, upper lip length and vermilion height, lower lip length and vermilion height, nasolabial angle, and profile convexity angle were measured clinically and photographically, immediately before treatment and after it. Data were analyzed using paired/unpaired -tests (α = 0.025) and partial correlation coefficient controlling for the intervention type (α = 0.05).
Lip exercise plus activator headgear significantly changed/improved all parameters ( ≤ 0.006) over the 6-8-month course of treatment. Activator headgear alone changed/improved only 4 parameters: interlabial gap, upper and lower lip lengths, the lower lip vermilion height, and profile convexity ( ≤ 0.008). Compared to the control (activator headgear alone), in the experimental group, the changes observed in the interlabial gap closure ( = 0.011), upper lip lengthening ( = 0.002), and upper lip vermilion lengthening ( = 0.017) were significantly greater. Convexity angle corrections were more successful in cooperative patients (R = 0.469, = 0.012). Cases with smaller pretreatment nasolabial angles may experience more changes in this angle after treatment (R = 0.581, = 0.001).
The addition of lip exercises to activator high-pull headgear can boost activator headgear's efficacy in treating lip incompetence.
唇功能不全是正畸领域的一个重要问题。尚无研究评估头帽 + 唇部锻炼联合治疗对唇功能不全的影响。因此，开展了本研究。
这是一项针对29名受试者（16名对照组和13名实验组受试者）的纵向随机临床试验。两组均接受标准化的Activator高位牵引头帽治疗（每月随访），为期6 - 8个月。实验组患者还被要求每天进行3次特定的唇部锻炼，每次5组。在治疗前和治疗后，通过临床检查和摄影测量治疗前后的唇间隙、上唇长度和唇红高度、下唇长度和唇红高度、鼻唇角以及侧面凸度角。使用配对/非配对t检验（α = 0.025）和控制干预类型的偏相关系数（α = 0.05）对数据进行分析。
在6 - 8个月的治疗过程中，唇部锻炼加Activator头帽显著改变/改善了所有参数（P≤0.006）。单独使用Activator头帽仅改变/改善了4个参数：唇间隙、上唇和下唇长度、下唇唇红高度以及侧面凸度（P≤0.008）。与对照组（仅使用Activator头帽）相比，实验组在唇间隙闭合（P = 0.011）、上唇延长（P = 0.002）和上唇唇红延长（P = 0.017）方面观察到的变化显著更大。在配合良好的患者中，凸度角矫正更为成功（R = 0.469，P = 0.012）。治疗前鼻唇角较小的病例在治疗后该角度可能变化更大（R = 0.581，P = 0.001）。
在Activator高位牵引头帽治疗中增加唇部锻炼可提高其治疗唇功能不全的疗效。
