Roles of bone scintigraphy and resonance frequency analysis in evaluating osseointegration of endosseous implant

Implant Stability - Measuring Devices and Randomized Clinical Trial for ISQ Value Change Pattern Measured from Two Different Directions by Magnetic RFA

“…There are reports showing a correlation between RFA and the histomorphometric analysis, and other reports claim that the correlation between the bone density and ISQ is not significant. Therefore RFA signifies the bone anchorage of implants but the relation of RFA and bone structure is not yet clear (Alsaadi, et al 2007, Huwiler, et al 2007, Rasmusson, et al 1998, Zhou, et al 2008. Such diverse results showed RFA value decreases during the first 2 weeks after implant placement, and this change can be related to early bone healing such as biological change and marginal alveolar bone resorption.…”

“…Bone remodeling reduces primary bone contact and in the early stage after implant placement, the formation of bony callus and increasing lamellar bone in the cortical bone causes major changes in bone density. Thus, in the healing process, primary bone contact decreases and secondary bone contact increases (Barewal, et al 2003, Zhou, et al 2008. Also, the 3-dimensional implant-bone contact is displayed 2 dimensionally in the histological sample and BIC has possibility of inaccuracy to signify bone-implant contact (Perrotti, et al 2010).…”

Finite element based bone remodeling and resonance frequency analysis for osseointegration assessment of dental implants

“…There have been various ways of assessing the implant stability. The most traditional method is perhaps the histological examination [25,26]. This is however an invasive approach and hence cannot be used clinically to monitor the osseointegration process in vivo.…”

Relation between initial implant stability quotient and bone-implant contact percentage: an in vitro model study

“…The implant stability is theoretically affected by the bone-implant contact (BIC) area, possibly owing to a larger amount of bone in contact with the implant producing a higher structure stiffness, resulting in higher interfacial strength. 17,18 Zhou et al 19 and Scarano et al 20 demonstrated that the BIC was correlated with the resonance frequency of the implant in animals and in retrieved human implants, respectively. In contrast, Ito et al 14 and Jun et al 21 indicated that there was no significant correlation between RFA measurements and BIC based on animal and human cadaver studies, respectively.…”

“…The inconsistency in the results [7][8][9][10]14,19,21 obtained for the correlation between RFA measurements and BIC might be at least partially because of previous studies using 2-dimensional (2D) histomorphometric evaluations to assess the BIC, as one or only a few histologic sections cannot represent the entire 3-dimensional (3D) BIC between the implant and bone. 14 Therefore, the objective of the present study was to use high-resolution microcomputed tomography (micro-CT) to determine the relation between the initial stability, as measured by RFA, and the BIC percentage (BIC%) obtained using both 2D and 3D approaches.…”