Williamson E H, Caves S A, Edenfield R J, Morse P K
Am J Orthod. 1978 Dec;74(6):672-7. doi: 10.1016/0002-9416(78)90006-4.
Cephalometric analyses were made of forty-six preorthodontic patients with the mandibular teeth in maximum intercuspation. A Centric-Ceph was used and the analysis was repeated on these patients with the mandible in centric relation. The following conclusions are drawn: 1. No clinically useful prediction may be made from cephalometric radiographs concerning the amount of mandibular deflection from centric relation to maximum intercuspation of teeth. 2. There are differences in cephalometric measurements with the mandible in the two different positions. However, with the exception of a few cases, the differences are slight. 3. The individual cases that have the largest discrepancies tend to be Class II malocclusion cases. The orthodontist should be aware of those cases and be prepared to articulate them for diagnosis.
对46名正畸治疗前患者进行了头影测量分析，这些患者的下颌牙齿处于最大牙尖交错位。使用了正中关系头影测量仪，并对这些患者在下颌处于正中关系时再次进行分析。得出以下结论：1. 从头影测量X线片无法对下颌从正中关系到牙齿最大牙尖交错位的偏斜量做出临床上有用的预测。2. 下颌处于两个不同位置时，头影测量结果存在差异。然而，除少数情况外，差异很小。3. 差异最大的个别病例往往是安氏II类错牙合病例。正畸医生应了解这些病例，并准备好对其进行咬合分析以进行诊断。
