Silau A M, Njio B, Solow B, Kjaer I
Department of Orthodontics, School of Dentistry, University of Copenhagen, Denmark.
J Craniofac Genet Dev Biol. 1994 Oct-Dec;14(4):252-6.
The human osseous palate consists of the palatine processes of the maxillary bone anterior to the transverse palatine suture and the horizontal processes of the palatine bone posterior to the suture. The purpose of the present study was to analyze the sagittal growth of these different bone components bordering the transverse palatine suture. The material comprised radiographs of cranial midsagittal tissue blocks from 44 human fetal specimens obtained by legally approved abortions. Gestational age (GA) ranged from 10 to 26 weeks and crown-rump lengths (CRLs) from 50 to 240 mm. The lengths of the maxillary and palatine components of the hard palate were measured with a digital caliper on 3x-enlarged projections of the radiographs. A significant increase in the lengths of both palatal components occurred during the period investigated. Regression analysis on GA showed a linear course of the growth curve in the period studied and gave indirect evidence of a curvilinear shape in the period preceeding the one studied. Growth rates for the palatal dimensions were found to be proportional to that of CRL. The increase in total length resulted predominantly from an increase in the anteroposterior dimension of the maxillary component.
人类的骨性硬腭由腭横缝前方上颌骨的腭突和该缝后方腭骨的水平突组成。本研究的目的是分析毗邻腭横缝的这些不同骨成分的矢状生长情况。材料包括通过合法批准的堕胎获得的44例人类胎儿标本的头颅正中矢状组织块的X线片。孕周（GA）为10至26周，顶臀长（CRL）为50至240毫米。在X线片放大3倍的投影上，用数字卡尺测量硬腭上颌和腭部成分的长度。在所研究的时期内，两个腭部成分的长度均显著增加。对孕周的回归分析显示，在所研究的时期内生长曲线呈线性，并且间接证明在该研究时期之前的时期内生长曲线呈曲线形。发现腭部尺寸的生长速率与顶臀长的生长速率成比例。总长度的增加主要是由于上颌成分前后径的增加。
