Natural frequency analysis for the stability of a dental implant by finite element method

For years, radiographic examination has been the main clinical method for the assessment of the dental implant in vivo condition. However, the use of such method is limited for many applications due to its low sensitivity. As a result, it is thus difficult to diagnose in the early stages of bone losses. Therefore, there is a strong clinical demand for a novel non-invasive technique to evaluate objectively the status of the dental implant under various bone qualities. Thus, the goal of current study is to provide a preliminary numerical analysis of the vibrating behavior of a dental imphmt at implant-bone interface. A 3D cylinder-type titanium implant FE model was established, with physical dimensions of 3.75 mm × 10 mm. The implant was placed into a 10×l0×l5 mm3 section of bone. The natural frequencies of the FE model were calculated under different boundary levels and bone densities. Our results indicated that the modeled natural frequency decreased linearly (r=-0.975, p