Michelotti Ambra, Farella Mauro, Buonocore Gerarda, Pellegrino Gioacchino, Piergentili Carlo, Martina Roberto
Oral, Dental and Maxillo-Facial Sciences. Section of Orthodontics and Clinical Gnathology, University of Naples 'Federico II', Via Pansini 5, I-80131 Naples, Italy.
Eur J Orthod. 2007 Dec;29(6):622-6. doi: 10.1093/ejo/cjm071. Epub 2007 Sep 14.
It has been suggested that malocclusions may influence whole body posture, including leg length, but the current scientific evidence to support this statement is poor. The aim of the present study was to investigate a possible association between leg length inequality (LLI) and unilateral posterior crossbite. A survey was carried out in young adolescents recruited from three schools. The sample included 1,159 subjects (633 males and 526 females) with a mean age of 12.3 years (range 10.1-16.1 years), who underwent an orthodontic and orthopaedic examination performed independently by orthodontists and orthopaedists. The data were analysed by means of logistic regression analysis. One hundred and twenty subjects (10.3 per cent) were diagnosed as having LLI. A unilateral posterior crossbite was found in 142 of the 1,159 subjects (12.2 per cent). Logistic multiple regression analysis, controlling for potential confounding variables, failed to reveal a significant association between LLI and unilateral posterior crossbite (odds ratio = 1.0, confidence limits = 0.6-1.9). A unilateral posterior crossbite does not appear to be associated with LLI, at least in young adolescents.
有人提出错牙合可能会影响全身姿势，包括腿长，但目前支持这一说法的科学证据不足。本研究的目的是调查腿长不等（LLI）与单侧后牙反合之间可能存在的关联。对从三所学校招募的青少年进行了一项调查。样本包括1159名受试者（633名男性和526名女性），平均年龄为12.3岁（范围10.1 - 16.1岁），他们接受了正畸医生和矫形医生独立进行的正畸和矫形检查。通过逻辑回归分析对数据进行分析。120名受试者（10.3%）被诊断为患有LLI。在1159名受试者中的142名（12.2%）发现有单侧后牙反合。在控制潜在混杂变量的情况下，逻辑多元回归分析未能揭示LLI与单侧后牙反合之间存在显著关联（优势比 = 1.0，置信区间 = 0.6 - 1.9）。至少在青少年中，单侧后牙反合似乎与LLI无关。
