In Vitro Laser Bonding of Bovine Cortical Bone Specimen and TCP-Glass Ceramics
In Vitro Laser Bonding of Bovine Cortical Bone Specimen and TCP-Glass Ceramics
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牛皮质骨标本与 TCP-玻璃陶瓷的体外激光接合
DOI：
10.1299/jbse.7.248
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
S. Tadano
中科院分区：
文献类型：
--
作者：
T. Ogita;M. Kanaoka;M. Todoh;S. Tadano
骨科植入物被广泛用于固定骨头或替代关节的关节面。植入手术只能由高度专业化和训练有素的外科医生进行。开发一种能够将骨与植入材料直接结合的技术是非常重要的。具有高能量密度的激光加工是在极短的时间内以较高的定位精度粘合不同材料的有效工具。为了探讨激光粘合活骨和生物陶瓷的可能性，本研究开发了一种体外激光加工技术，将牛皮质骨标本与合成磷酸三钙（TCP）和mgo - al2o3 - sio2 -玻璃（TG陶瓷）组成的陶瓷结合。用激光束照射骨标本表面，生成微孔泡沫状物质，以类似点焊的方式将骨标本与TG陶瓷结合。结合强度定义为骨试件与陶瓷试件界面之间的剪切应力。结果表明，随着激光照射时间的延长，结合强度增加。
Orthopedic implants are widely used to fix a bone or to replace the articulating surface of a joint. Implant surgeries are performed only by highly specialized and trained surgeons. It is quite important to develop a technique that can bond bone and implant materials directly. Laser processing with high energy density is an effective tool for bonding different materials in a very short time with a high positional accuracy. In this study, to investigate the possibility of laser bonding living bones and bioceramics, an in-vitro laser processing technique was developed for bonding a bovine cortical bone specimen with a ceramics composed of synthetic tricalcium phosphate (TCP) and MgO-Al2O3-SiO2-glass (TG ceramics). By irradiating the surface of the bone specimen with a laser beam, a microporous foam-like substance was generated that bonded the bone specimen with the TG ceramics in a manner similar to spot welding. The bonding strength was defined as the shear stress between the interface of the bone specimen and the ceramics specimen. It was found that the strength of the bond increased with an increase in the duration of laser irradiation.