猴牙再植前根尖切除对牙周和牙髓愈合的影响

J.O. Andreasen , O. Schwartz, F.M. Andreasen
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引用次数: 13

摘要

以7只绿黑尾猴(Cercopithecus aethiops)为研究对象,研究了在再植前切除根尖部分对牙周和牙髓愈合的影响。实验采用上颌中切牙、下颌侧切牙和第一、第二下颌磨牙。将一侧牙拔出,以完整的牙根进行再植,同时将对侧牙的牙尖切除2mm,以促进牙髓修复并消除牙根吸收易发区域的吸收。术后8周对再植牙进行组织学检查。组织计量学分析显示,行根尖切除或不行根尖切除的牙齿在牙周愈合方面无显著差异。在牙髓愈合方面,发现根尖切除会导致牙根形成不成熟的牙齿的重要牙髓组织明显减少。在成熟牙齿中也发现了类似但不显著的差异。基于这些发现,不建议在再植前切除根尖以改善牙髓修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effect of apicoectomy before replantation on periodontal and pulpal healing in teeth in monkeys

The effect of resection of the apical part of the root before replantation upon periodontal and pulpal healing was studied in 7 green Vervet monkeys (Cercopithecus aethiops) using teeth with incomplete and complete root formation. Maxillary central incisors, mandibular lateral incisors and first and second mandibular molars were used in this experiment. On one side, the tooth was extracted and replanted with an intact root while the contralateral tooth had 2 mm of the apex resected for the purpose of facilitating pulpal repair and eliminating resorption in the resorption-prone region of the root. The replanted teeth were examined histologically 8 weeks after replantation. The histometric analysis revealed no significant difference in periodontal healing between teeth with or without apical resection. With regard to pulpal healing, apical resection was found to lead to significantly less vital pulp tissue in teeth with immature root formation. A similar, but not significant difference was found for mature teeth. Based on these findings, it could not be recommended that apices be resected prior to replantation in order to improve pulpal repair.

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