Mathews J R, Payne G S
Angle Orthod. 1980 Jul;50(3):218-29. doi: 10.1043/0003-3219(1980)050<0218:QCAOLI>2.0.CO;2.
Computer aided interpretation of longitudinal growth data has been presented in summary fashion for four or thirty-six young patients with maxillary and mandibular tantalum implants employing the U.C.S.F. computer program. Broad generalizations of changes in mandibular morphology cannot be made from the small sample. Caution is the watchword in employing so-called natural reference points for superpositioning over an extended period of growth. Identification of cephalometric point B is difficult on a long-term serial basis. The direction of eruption of the lower incisor tip can be followed rather easily and accurately in patients with mandibular implants but varies considerably from patient to patient. Discrepancies arising between customary anatomic tracing methods and implant references have been demonstrated.
利用加州大学旧金山分校的计算机程序，以简要方式呈现了对4名或36名上颌和下颌植入钽的年轻患者纵向生长数据的计算机辅助解读。从小样本中无法对下颌形态变化进行广泛的概括。在长时间生长过程中使用所谓的自然参考点进行叠加时要谨慎。从长期连续观察的角度来看，确定头影测量点B很困难。对于植入下颌的患者，可以相当容易且准确地追踪下切牙尖端的萌出方向，但不同患者之间差异很大。已经证明了传统解剖追踪方法与植入物参考之间存在差异。
