A LONG-TERM STUDY OF 370 AUTOTRANSPLANTED PREMOLARS .3. PERIODONTAL HEALING SUBSEQUENT TO TRANSPLANTATION
A LONG-TERM STUDY OF 370 AUTOTRANSPLANTED PREMOLARS .3. PERIODONTAL HEALING SUBSEQUENT TO TRANSPLANTATION
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DOI：
10.1093/ejo/12.1.25
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发表时间：
1990-02-01
影响因子：
2.6
通讯作者：
SCHWARTZ, O
中科院分区：
文献类型：
--
作者：
ANDREASEN, JO;PAULSEN, HU;SCHWARTZ, O
本研究的目的是确定自体移植前磨牙牙周愈合的长期预后。受试者包括195名7至35岁的患者，共370例自体移植，均采用标准技术进行手术和随访。观察期1 ~ 13年。8周后，大多数病例的X线片显示牙周膜完全愈合。移植后发生的牙根吸收分为表面吸收、炎性吸收和替代性吸收（强直）。52颗移植牙发生牙根吸收，通常在6个月内诊断。根吸收被认为是显着相关的增加阶段的根的发展和阶段的萌出在移植时。随后的牙齿正畸移动完成根形成时，移植导致轻微增加的频率表面和炎性吸收。本研究表明，移植物牙周膜的创伤是牙根吸收发展的促发因素。
The purpose of the present investigation was to determine the long-term prognosis of autotransplanted premolars with respect to periodontal healing. The subjects consisted of 195 patients aged 7 to 35 years, with a total of 370 autotransplanted all operated and followed with a standard technique. The observation period ranged from 1 to 13 years. Periodontal healing as demonstrated radiographically was complete in most cases after 8 weeks. Root resorption occurring after transplantation was divided into surface-, inflammatory- and replacement resorption (ankylosis). Root resorption occurred in 52 of the transplanted teeth and was usually diagnosed within 6 months. Root resorption was found to be significantly related to increasing stage of root development and the stage of eruption at the time of transplantation. Subsequent orthodontic movement of teeth with completed root formation at the time of transplantation resulted in a slight increase in the frequency of both surface and inflammatory resorption. The present study indicates that trauma to the PDL of the transplant is the explantory factor for the development of root resorption.