Lagerström L, Kristerson L
Am J Orthod. 1986 Feb;89(2):146-50. doi: 10.1016/0002-9416(86)90091-6.
The aim of this study was to clarify whether orthodontic movement of autotransplanted premolars will affect the final root length of the transplants. A group of 29 autotransplanted premolars that had been orthodontically treated was compared with a group of 30 autotransplanted premolars that had not been orthodontically treated. Contralateral teeth in both groups served as controls. The root lengths of the transplants as well as the controls were measured on the radiographs immediately after transplantation and also after orthodontic treatment and complete root formation. The results demonstrated that there was no statistically significant difference between the original and final root lengths of the transplants in the two samples or between the contralateral teeth. The autotransplantation of the premolars resulted in an average shortening of 1 to 2 mm compared to the contralateral control teeth. Futhermore, orthodontic movement of the transplants appeared to have a tendency to shorten the final root length.
本研究的目的是阐明自体移植前磨牙的正畸移动是否会影响移植牙的最终牙根长度。将一组29颗接受过正畸治疗的自体移植前磨牙与一组30颗未接受正畸治疗的自体移植前磨牙进行比较。两组的对侧牙作为对照。在移植后即刻以及正畸治疗后和牙根完全形成后，在X线片上测量移植牙和对照牙的牙根长度。结果表明，两个样本中移植牙的原始牙根长度与最终牙根长度之间以及与对侧牙之间均无统计学上的显著差异。与对侧对照牙相比，前磨牙的自体移植导致平均缩短1至2毫米。此外，移植牙的正畸移动似乎有缩短最终牙根长度的趋势。
