Ferrario V F, Sforza C, Miani A, Tartaglia G
Laboratorio di Anatomia Funzionale dell'Apparato Stomatognatico, Facoltà di Medicina e Chirurgia, Università degli Studi, Milano, Italy.
Arch Oral Biol. 1994 Feb;39(2):135-9. doi: 10.1016/0003-9969(94)90108-2.
Euclidean-distance matrix analysis (EDMA) was used to analyse the dental arch form in 50 men and 45 women aged 20-27 yr with sound dentitions. Fourteen landmarks, corresponding to the centres of gravity (centroids) of the occlusal surfaces of all permanent teeth (right second molar to left second molar), were identified on the dental casts of subjects. All the possible linear distances between pairs of teeth were computed and maxillary/mandibular arch differences within sex were tested by EDMA. In both sexes, the maxillary arch was larger than the mandibular arch; arch shape was also significantly different. All teeth contributed to the shape difference between arches regardless of gender. EDMA also separated the influence of anterior and posterior teeth in the determination of upper/lower arch characteristics.
采用欧几里得距离矩阵分析（EDMA）对50名年龄在20 - 27岁、牙列健全的男性和45名女性的牙弓形态进行分析。在受试者的石膏模型上确定了14个标志点，这些标志点对应于所有恒牙（右第二磨牙至左第二磨牙）咬合面的重心（质心）。计算了成对牙齿之间所有可能的线性距离，并通过EDMA测试了性别内的上颌/下颌牙弓差异。在男女两性中，上颌牙弓均大于下颌牙弓；牙弓形状也存在显著差异。无论性别如何，所有牙齿都对牙弓之间的形状差异有影响。EDMA还区分了前牙和后牙在确定上/下牙弓特征方面的影响。
