A LONG-TERM STUDY OF 370 AUTOTRANSPLANTED PREMOLARS .1. SURGICAL-PROCEDURES AND STANDARDIZED TECHNIQUES FOR MONITORING HEALING
A LONG-TERM STUDY OF 370 AUTOTRANSPLANTED PREMOLARS .1. SURGICAL-PROCEDURES AND STANDARDIZED TECHNIQUES FOR MONITORING HEALING
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DOI：
10.1093/ejo/12.1.3
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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
近年来，自体牙齿移植已成为治疗某些正畸问题的一种方法。在13年的时间里，通过电动牙髓敏感性测试和牙髓和牙周膜愈合以及牙根生长的放射检查，对370颗前磨牙移植进行了监测。本文介绍了评估移植愈合的手术技术以及敏感性测试和放射学检查的精确度。敏感度反应与牙齿发育阶段显著相关，与前磨牙类型无关。敏感性测试的精密度(即S间隔几周连续两次测量的偏差)在不同阶段的范围内从15%到36%不等。用胶片架对口内X线片曝光进行标准化。两次读片测量牙长和牙冠宽的精确度百分比为1.1~1.8，不同类型的前磨牙之间差异不大。从两张连续的X线片(测量和曝光误差)评估的射线曝光技术的精度百分比被发现在1.2到4.2之间，同样在不同的前磨牙之间也有很小的差异。射线照相技术的精确度(即照相确定的牙齿尺寸与真实值的偏差)被发现在2.0至2.9的范围内，各种类型的前磨牙之间只有很小的差异。综上所述，电测敏感性试验的评价应考虑到前磨牙的牙根形成阶段。
Tooth autotransplantation has recently become a method of treating certain orthodontic problems. Over a 13-year period 370 premolar transplants were monitored by electrometic pulp sensibility testing and radiographic examination for pulp and periodontal ligament healing as well as root growth. This article describes the surgical technique as well as the precision of sensibility testing and radiographic examination for evaluating transplant healing. The sensibility response was found markedly related to the stage of tooth development but not to the type of premolar. The precision of sensibility testing (i.e. deviation of two consecutive measurements at a few week''s interval) was found to range from 15-36 per cent for the different stages. Film holders were used to standardize the intraoral radiographic exposures. The precision percentage for the measuring technique of tooth length and crown width based on a single radiograph read twice (reading error) ranged from 1.1 to 1.8 with only small variations among the different types of premolar. The precision percentage of the radiographic exposure technique evaluated from two consecutive radiographs (measuring plus exposure error) was found to range from 1.2 to 4.2, again with small variations among the different premolars. The accuracy of the radiographic technique (i.e. deviation of radiographically determined tooth dimensions from the true values) was found to range from 2.0 to 2.9 with only small variation between the various types of premolar. In conclusion the evaluation of electrometric sensibility testing should take into account the stage of root formation of premolars.