Transalveolar screws and the incidence of dental damage: a prospective study
Transalveolar screws and the incidence of dental damage: a prospective study
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DOI：
10.1016/j.ijom.2003.10.014
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发表时间：
2004-07-01
影响因子：
2.4
通讯作者：
Starr, DG
中科院分区：
文献类型：
--
作者：
Fabbroni, G;Aabed, S;Starr, DG
前瞻性研究了经牙槽螺钉置入时螺丝钉/牙齿接触的发生率。评估了这种接触发生时的临床意义。下颌骨骨折患者需要在术中或术后使用经牙槽螺丝钉控制其咬合情况。在取出螺钉后，对接触情况进行放射学评估，并对所有与螺钉相邻的牙齿进行活力测试。如果牙根上的螺纹孔直径小于50%，则判定为轻微接触；如果大于50%，则判定为主要接触。54名男性和1名女性患者完成了这项研究。共放置232枚螺丝钉，接近440颗牙齿。26枚(11.2%)有主要接触，37枚(15.9%)有少量接触。17颗牙齿在电子牙髓测试中被检测为无生命，但其中只有6颗显示有螺丝钉的阻生。在两名患者中，两枚螺钉与并发症有关。使用经牙槽螺钉确实会发生螺丝钉/牙齿接触，然而，临床上显著损伤的发生率似乎非常低。
The incidence of screw/tooth contact in the placement of transalveolar screws was prospectively studied. The clinical significance of such contact when it occurred was assessed. Patients with fractures of the mandible requiring intra- or post-operative control of their occlusion with transalveolar screws were entered into the study. Following screw removal, contact was assessed radiographically and all teeth adjacent to screws were tested for vitality. Any contacts were judged to be minor if less than 50% of the diameter of the screw hole impinged on a tooth root or major if this was more than 50%. Fifty-four male and one female patients completed the study. There were 232 screws placed in these patients adjacent to 440 teeth. Twenty-six screws (11.2%) had major contacts and 37 (15.9%) had minor contacts. Seventeen teeth tested as non-vital with electronic pulp testing but of these only 6 showed any impingement by screws. Two screws were associated with complications in two patients. Screw/tooth contact does occur using transalveolar screws, however, the incidence of clinically significant damage appears to be very low.