Andreasen J O
Int J Oral Surg. 1980 Dec;9(6):458-61. doi: 10.1016/s0300-9785(80)80076-7.
The effect of removal of the coagulum in the alveolus before replantation upon periodontal and pulpal healing was studied in green Vervet monkeys (Cercopithecus aethiops). Mandibular lateral incisors were extracted. The extra-alveolar period before replantation was 60 min. The storage medium for the extracted teeth was physiologic saline. On the right side of the mandible, the coagulum was removed before replantation, using syringe with saline assisted by a spoon-shaped excavator. On the left side, the tooth was replanted with the coagulum in situ. The replanted teeth were examined histologically after 8 weeks. The histometric analysis showed no significant difference in periodontal or pulpal healing between the two groups. Based on this finding, it is suggested that replantation of avulsed mature teeth be carried out immediately, without any attempt to remove the coagulum.
在绿长尾猴（赤猴）中研究了再植前去除牙槽内血凝块对牙周和牙髓愈合的影响。拔除下颌侧切牙。再植前牙槽外时间为60分钟。拔除牙齿的储存介质为生理盐水。在右侧下颌骨，再植前使用带有生理盐水的注射器并在匙形挖器辅助下去除血凝块。在左侧，牙齿带原位血凝块进行再植。8周后对再植牙齿进行组织学检查。组织测量分析表明两组之间在牙周或牙髓愈合方面无显著差异。基于这一发现，建议立即进行脱位成熟牙齿的再植，无需尝试去除血凝块。
