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首页> 外文期刊>The Journal of craniofacial surgery >Heritability of Facial Skeletal and Dental Characteristics of Monozygotic and Dizygotic Twins Using Cephalometric Analysis and Falconer's Method
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Heritability of Facial Skeletal and Dental Characteristics of Monozygotic and Dizygotic Twins Using Cephalometric Analysis and Falconer's Method

机译：使用头脑分析和Falconer方法的单吞咽和Dizygotic双胞颈面部骨骼和牙齿特征的遗传性

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摘要

The purpose of this study was to investigate the heritability of facial skeletal and dental characteristics of the monozygotic (MZ) and dizygotic (DZ) twins. The samples consisted of Korean MZ and DZ twins (n=13pairs/each twin; 7 pairs of males and 6 pairs of females; mean age, 39 years, respectively). The linear, angular, and ratio variables, which could describe the size and shape of the facial horizontal and vertical, dental, mandible and cranial base structure, were measured. The Falconer's method was used to calculate the heritability (h(2); close to or below 0, low heritability; close to or above 1, high heritability). In the facial horizontal and vertical aspects, the highest h(2) values were shown at SNA (degree, 1.53), SNB (degree, 2.12), SN-Pog (degree, 2.19), SN-palatal plane angle (degree, 1.29), SN-mandibular plane angle (degree, 1.59), N-ANS/ANS-Me (1.66), and ANS-Me/N-Me (1.62). In the dental aspects, although L1-occlusal plane angle (degree, 1.38) and SN-occlusal plane angle (degree, 2.09) showed high h(2) values, most of the dental variables showed low h(2) values. In the mandible and cranial base, lower gonial angle, mandibular body length, and cranial base angle showed high h(2) values (N-Go-Gn [degree], 1.07; Go-Pog [mm], 0.92; N-S-Ba [degree], 1.51). The descending order of the overall mean h(2) values was the facial horizontal (1.10), facial vertical (0.71), mandible (0.59), cranial base (0.37), and dental characteristics (-0.11). The shape of facial skeletal structure and location of the occlusal plane within skeletal framework was more influenced by genetic factors than environmental factors.
机译：本研究的目的是探讨单义（MZ）和Dizygotic（DZ）双胞胎的面部骨骼和牙科特征的可遗传性。样品由韩国MZ和DZ双胞胎组成（n = 13个/每双胞胎; 7对男性和6对女性;平均年龄，分别为39岁）。测量可以描述面部水平和垂直，牙齿，下颌骨，下颌骨和颅基结构的线性，角度和比变量。 Falconer的方法用于计算遗传性（H（2）;接近或低于0，遗传性低或高于1，遗传性高于或高于1。在面部水平和垂直方面，最高的H（2）值显示在SNA（度，1.53），SNB（度，2.12），SN-POG（度，2.19），SN-腭平面角度（度，1.29度），Sn下颌平面角度（度，1.59），N-ANS / ANS-ME（1.66）和ANS-ME / N-ME（1.62）。在牙科方面，尽管L1-咬合平面角度（度，1.38）和Sn-咬合平面角度（度，2.09）显示出高H（2）值，但大多数牙齿变量显示出低H（2）值。在下颌骨和颅底，较低的灯角，下颌体长，颅基角度显示出高H（2）值（n-go-gn [度]，1.07; go-pog [mm]，0.92; ns-ba [学位]，1.51）。总平均值H（2）值的降序是面部水平（1.10），面部垂直（0.71），下颌骨（0.59），颅底（0.37）和牙科特征（-0.11）。骨骼框架内面部骨骼结构和咬合平面内的位置的形状受到遗传因素的影响而不是环境因素。

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