dc.description.abstract | Previously, the treatment for patients with permanent tooth defects was treated by denture replacement, but this way may cause the alveolar bone atrophy or other problems. Nowadays, the way to solve this kind of problem is developed into using the artificial tooth to replace the permanent tooth through dental implant operation. From the clinical experience of dental implant surgery, it is generally believed that the osseointegration (postoperative implant Stability) is the key to a successful surgery. In this study, the target is to establish an effective way to assess the dental implant stability.
This study focuses on developing an objective, quantitative, non-invasive and non-contact dental implant stability detection device that is expected to reduce the risk of surgical failure. In addition, the detection device is designed with the advantage of a simple electric circuit, small size and hand-held.
If the magnetic rod is fixed on the implant, we can consider that the structure looks like a cantilever beam. The resonance frequency (RF) of this beam increases if the material stiffness around the structure increases. When the rod is excited by the detection device, it will vibrate and influence the magnetic field around the structure, then causes the magnetic motive force (MMF). The detection device will receive the MMF and compare with the reference signal, then we can get the RF of this structure.
From in vitro/in vivo experiments, the results can prove that the RF will increase when the material stiffness around the dental implant increases. So, we suggest that the primary stability is the key to a successful surgery, and our detection device can truly reflect the trend in osseointegration.
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