模板在种植义齿治疗中的应用

The application of dental stents in implant therapy

为了解决种植义齿修复中植入体位置、方向准确的问题，对涉及７４个种植体的３０个修复病例采用了模板技术。利用模板承载钢珠摄取Ｘ线片，可准确计算摄影中产生的畸变，有助于正确估计植入区域的骨量。手术模板上用人工牙形态、孔洞、隧道、窗口等方式将修复设计直观地表达给手术医师，指导钻入位置方向，有利于在手术中兼顾颌骨解剖条件和修复的需要。在颌骨解剖形态与预期差异较大时，利用模板亦有助于判断情况，以便采取相应的植骨等措施或撤消种植义齿治疗计划。本研究对提高临床种植治疗质量，有参考意义。

The improperiety of the location of implants would cause many difficulties to prosthetic procedure. The function, appearance and longterm health of implant denture would then be effected. Dental stents were used to resolve the above problems for 30 cases of implant denture involved 74 implants in present study. A radiographic stent with given diameter sphere can be used to eliminate distortion and determine the bone quantity. A surgical stent can express the prosthetic plan to surgeons during operation directly in the mouthes of patients. It is very helpful to the surgeons to take account of both the condition of jaw bone and the future denture making. Holes, tunnels and windows on surgical stents can be used as the guidances of drilling positions and directions. The surgical stents may also be a useful reference to surgeons to make bone graft, do some changes in surgical plan and even cancel the implant denture therapy when the situation of jaw bone significantly differ from what the expectancy.