Huang H M, Cheng K Y, Chen C F, Ou K L, Li C T, Lee S Y
Graduate Institute of Oral Sciences, Taipei Medical University, Taipei, Taiwan.
Proc Inst Mech Eng H. 2005 May;219(3):203-11. doi: 10.1243/095441105X9336.
Resonance frequency (RF) analysis technology was used to design a dental implant stability detector. The device uses a miniature-sized electromagnetic triggering rod to elicit vibration in a dental implant. Vibrational signals were recorded via an acoustic receiver. To assess the in vivo performance of the test apparatus, animal models were used. Implants were placed in the left tibia of 12 rabbits using a conventional surgical procedure. Standard 3.2 mm x 8 mm implants were placed in each test tibia with pre-tapping cavities of 3.2 mm and 3.7 mm diameters to simulate either a 'well-fitting' or a 'loosely fitting' situation. The RF values of the test implants were detected by the newly developed device which was directly mounted on the healing abutments of the implants. The results showed that the RF values of the implants under well-fitting conditions significantly increased (p < 0.01) 3 weeks after surgery and reached a plateau at around 6-7 weeks. Meanwhile implants with higher initial RF values had shorter healing times and higher final RF values at the plateau. Based on these findings, it was concluded that the idea of using the current designed device for detecting the degree of bone healing during the osseointegration process seems feasible.
共振频率（RF）分析技术被用于设计一种牙科种植体稳定性探测器。该设备使用一个微型电磁触发杆来引发牙科种植体的振动。振动信号通过声学接收器记录。为了评估测试设备的体内性能，使用了动物模型。采用常规外科手术将种植体植入12只兔子的左胫骨。在每个测试胫骨中植入标准的3.2毫米×8毫米种植体，预先钻出直径为3.2毫米和3.7毫米的孔，以模拟“适配良好”或“适配松散”的情况。通过直接安装在种植体愈合基台上的新开发设备检测测试种植体的RF值。结果显示，在适配良好的情况下，种植体的RF值在术后3周显著增加（p < 0.01），并在6 - 7周左右达到平稳状态。同时，初始RF值较高的种植体愈合时间较短，在平稳状态下最终RF值较高。基于这些发现，得出结论：使用当前设计的设备来检测骨结合过程中骨愈合程度的想法似乎是可行的。
