Influence of mono- and bicortical anchorage on the integration of titanium implants - A study in the rabbit tibia
Influence of mono- and bicortical anchorage on the integration of titanium implants - A study in the rabbit tibia
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DOI：
10.1016/s0901-5027(96)80036-1
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发表时间：
1996-06-01
影响因子：
2.4
通讯作者：
Lekholm, U
中科院分区：
文献类型：
--
作者：
Ivanoff, CJ;Sennerby, L;Lekholm, U
本研究的目的是评价由一层或两层皮质支撑的钛种植体的取出扭矩和骨组织反应。在18只成年新西兰兔的右和左胫骨中植入了共72个螺钉钛种植体，长度为10或16 mm，直径为3.75 mm。植入物接合一个或两个皮质层，并且允许动物有6或12周的愈合期。通过使用扭矩计压力计测量移除扭矩来评估整合程度，还在10 μ m厚的研磨切片中进行组织形态计量学计算。所有种植体在实验结束时临床稳定，6周后双皮质种植体的移除扭矩比单皮质种植体高2倍，12周后高3倍。16 mm种植体在6周和12周后的骨接触量和骨面积也分别高于短种植体。结果支持种植体的双皮质支抗在临床情况下也。(C)Munksgaard，1996年。
The study aimed to evaluate the removal torque and bone tissue response to titanium implants supported by one or two cortical layers, A total of 72 screw titanium implants, either 10 or 16 mm in length and 3.75 mm in diameter, were inserted in right and left tibiae of 18 adult New Zealand rabbits. The implants engaged either one or two cortical layers, and the animals were allowed a healing period of 6 or 12 weeks. The degree of integration was assessed by measuring the removal torque with a torque gauge manometer, Histomorphometric calculations were also performed in 10-mu m-thick ground sections. All implants were clinically stable at the end of the experiment, The removal torque was two times higher for the bicortical implants after 6 weeks, and three times higher after 12 weeks, than for the monocortical ones. The 16-mm implants also showed a statistically higher amount of bone contact and bone area after 6 and 12 weeks, respectively, than the short ones. The results support bicortical anchorage of implants also in the clinical situation. (C) Munksgaard, 1996.