Itro A, Garau V, Tartaro G P, Colella G
Facoltà di Medicina e Chirurgia, II Università degli Studi, Napoli.
Minerva Stomatol. 1997 Jul-Aug;46(7-8):381-9.
A device of alloy with shape-memorising effect (SME) was utilized in the surgical correction of maxillo-facial fractures. Nitinol, an alloy of equal atomic parts nickel and titanium, is a metal with the unusual property of shape memory. This alloy may be easily bent when cooled in its lower temperature phase and it resumes its original shape when heated in its higher temperature phase. A lot of useful properties of nitinol alloy, such the ability to convert heat energy into mechanical energy, as the biocompatibility and bioinertness, as the anti corrosive stability and high mechanical strength, suggest that it can be useful in the surgical fixation of maxillofacial bone injuries.
The fixing device of alloy with SME, the indications and the techniques of osteosynthesis and some cases have been discussed by the authors.
The results of this study showed that the surgical treatment of maxillo-facial bone fractures by devices of shape memory alloys is simple, ensures a good stability of fracture surfaces, reduces the time period of operative procedures and of patients rehabilitation, allowing rapid bone healing.
一种具有形状记忆效应（SME）的合金装置被用于颌面骨折的外科矫正。镍钛诺是一种由等量原子的镍和钛组成的合金，是一种具有形状记忆这一特殊性能的金属。这种合金在低温相冷却时很容易弯曲，而在高温相加热时会恢复其原始形状。镍钛诺合金的许多有用特性，如将热能转化为机械能的能力、生物相容性和生物惰性、抗腐蚀稳定性以及高机械强度，表明它可用于颌面骨损伤的外科固定。
作者讨论了具有形状记忆效应的合金固定装置、骨合成的适应症和技术以及一些病例。
本研究结果表明，使用形状记忆合金装置对外科治疗颌面骨折操作简单，能确保骨折面良好的稳定性，减少手术过程和患者康复的时间，促进骨骼快速愈合。
