Resonance frequency analysis of implants in the guinea pig model: Influence of boundary conditions and orientation of the transducer

Numerical simulation of ultrasonic wave propagation for the evaluation of dental implant biomechanical stability

“…Ostell V R (Gothenburg, Sweden) (Valderrama et al, 2007) is the most commonly used biomechanical technique and consists in modal analysis of the first bending resonance frequency (between 5 and 15 kHz) (Meredith et al, 1996) of the whole bone-implant system. However, Periotest V R and Ostell V R (Pattijn et al, 2007) measurements are dependent of the orientation or fixation of the device, leading to reproducibility limitations that may prevent reliable quantitative evaluation of implant osseointegration. Moreover, both techniques give access to the characteristics of the whole bone-implant system and not to the bone-implant interface (Aparicio et al, 2006), which is critical in the assessment of implant stability.…”

Computational simulation of dental implant osseointegration through resonance frequency analysis

“…Experimental evidence has been widely provided demonstrating that the resonance frequency of a dental implant system will vary with the stiffness of its surrounding tissue and the bonding degree of the implant-tissue interface (Huang et al, 2000(Huang et al, , 2002(Huang et al, , 2003Meredith et al, 1996;1997a, b;Glauser et al, 2004). Several computational analyses have tried to analyse the influence of different factors on the modal behaviour of bone-implant transducers (Huang et al, 2002;Pattijn et al, 2006Pattijn et al, , 2007. These studies showed that there are several effects, such as, bone quality, implant characteristics or thickness of the cortical layer that affect to the resonance frequency values and the mode shapes.…”

“…Several computational studies have been also performed on RFA for hip prostheses (Qi et al, 2003), tibial fractures (Lowet et al, 1996) and dental implants (Williams and Williams, 1997;Huang et al, 2002;Pattijn et al, 2006Pattijn et al, , 2007. Williams and Williams (1997), for example, applied different levels of impulse excitation to a dental implant and examined the corresponding response using a finite element analysis (FEA).…”

“…Huang et al (2002) performed a 3D finite element (FE) model of a dental implant for various bone heights and bone quality. In a similar way, Pattijn et al (2007) analysed the influence of the type of boundary condition, orientation of the transducer and length of the modelled bone on the resonance frequency values. However, none of them has considered yet the evolutive behaviour of the bone-implant interface as a living surface, but they assume the bone-implant interface as fully osseointegrated.…”

The effect of hierarchical micro/nanosurface titanium implant on osseointegration in ovariectomized sheep

“…The ISQ measurement between the micro/nanogroup and the control was not significant in this study. This may be due to the reason that the factors affected RFA on dental implant are the rigidity of surrounding tissues, which is mainly affected by cortical bones [19]. It was also shown that the osseointegration of cortical bones of the two groups was with no obvious distinction in the micro-CT images (Fig.…”