Bishara S E, Jakobsen J R
Department of Orthodontics, College of Dentistry, Iowa City 52242.
Angle Orthod. 1989 Summer;59(2):107-12. doi: 10.1043/0003-3219(1989)059<0107:CDIITS>2.0.CO;2.
The purpose of this study was to determine whether developmental interactions exist between the mesio-distal diameters of the first and second developing teeth in each of two morphologic tooth classes. The interactions were evaluated for the maxillary and mandibular incisors and premolars. Measurements were obtained on the dentitions of three contemporary samples from Iowa, Egypt and Northern Mexico. The findings from this study indicate that developmental interactions are present in the mesio-distal diameters between the first and second developing teeth within the two morphologic tooth classes evaluated, namely incisors and premolars. In other words, the mesiodistal diameter of the first developing tooth significantly influences the size of the second developing tooth within the same morphologic class.
本研究的目的是确定在两种形态学牙类中，第一颗和第二颗正在发育的牙齿的近远中径之间是否存在发育相互作用。对上颌和下颌切牙及前磨牙的这种相互作用进行了评估。在来自爱荷华州、埃及和墨西哥北部的三个当代样本的牙列上进行了测量。这项研究的结果表明，在所评估的两种形态学牙类（即切牙和前磨牙）中，第一颗和第二颗正在发育的牙齿的近远中径之间存在发育相互作用。换句话说，同一形态学类中第一颗正在发育的牙齿的近远中径会显著影响第二颗正在发育的牙齿的大小。
