一种微型自攻型支抗钉的设计与制造  

The design and manufacturing of a miniature self-tapping screw

作　　者：茹栋 何敌 王国庆 Ru Dong;He Di;Wang Guoqing(Hangzhou West Lake Biomaterials Co.,Ltd,Hangzhou 311107)

机构地区：[1]杭州西湖生物材料有限公司,杭州311107

出　　处：《口腔材料器械杂志》2023年第3期205-210,共6页Chinese Journal of Dental Materials and Devices

摘　　要：目的 研制一种具有良好生物力学功能、可直接自攻到位的微型自攻型支抗钉。方法 选用高强度植入物用钛合金TC4,或316L植入物医用不锈钢,设计支抗钉螺杆尖端自攻、螺杆主体、非骨质埋入部(龈部)、支抗钉功能头部和周向稳定槽,并采用6轴数控加工中心、配专用夹具工艺制造微型自攻型支抗钉。结果 成功设计了一种支抗钉螺杆尖端、螺杆主体骨螺纹和轻锥度、力矩输入段及牵引悬挂结构的微型自攻型支抗钉,该支抗钉能满足多重牵拉结扎,无需通过黏膜切口手术,可直接从牙龈穿透自攻植入牙床骨质中。结论 支抗钉具有良好的植入稳定性、生物相容性,在自攻固位后即可牵拉结扎,有效地缩短了正畸周期,避免了牵引过程中出现植入部分松动或植入部分失效的现象。Objective This study aimed to develop a micro self-tapping orthodontic screw with excellent biomechanical function and direct self-tapping in place.Method Titanium alloy TC4 or 316 stainless steels for high-strength implants was selected to produce the tip of the TAD,the bone thread and light taper of the screw body,the torque input segment,the traction suspension structure,and a 6-axis CNC machining center with specialfixtures are used to manufacture the miniature self-tapping orthodontic screw.Result The design of a miniature self-tapping stud with a screw tip,screw body thread and light taper,torque input section,and traction suspension structure has been successfully developed.The Temporary Anchorage Device did not need to be operated through a mucosal incision surgery and can be directly penetrated from the gums and self-tapped implanted into the gum bone.Conclusion The Temporary Anchorage Device has a favorable implantation stability and biocompatibility,and can be pulled and ligated after self-retention,which effectively shortens the orthodontic cycle and avoids the phenomenon of partial loosening or failure of the implant during traction.

关 键 词：微型 自攻型 钛合金 正畸支抗钉 设计制造 

分 类 号：TH787.1[机械工程—仪器科学与技术]