Paulsen H U, Andreasen J O
Department of Orthodontics, Copenhagen Municipal Dental Health Service, Denmark.
Eur J Orthod. 1998 Feb;20(1):45-55. doi: 10.1093/ejo/20.1.45.
One-hundred-and-eighteen premolars transplanted at a stage with 3/4 to 4/4 root development with an open apical foramen were followed using a standardized clinical and radiographic technique for signs of periodontal ligament healing, root development, and tooth eruption. Root growth was unimpeded in 26 per cent, impaired in 55 per cent, and arrested in 19 per cent. Eruption of transplants occurred at the time of periodontal and alveolar healing, and before any significant root growth. Furthermore, autotransplanted premolars created growth of the alveolar process along with the eruption process.
对118颗在牙根发育处于3/4至4/4阶段且根尖孔开放时移植的前磨牙，采用标准化临床和影像学技术进行随访，观察牙周膜愈合、牙根发育和牙齿萌出的迹象。牙根生长未受阻碍的占26%，生长受损的占55%，生长停滞的占19%。移植牙在牙周和牙槽愈合时萌出，且早于任何明显的牙根生长。此外，自体移植的前磨牙在萌出过程中促使牙槽突生长。
