Modelling of mandible bone properties in the numerical analysis of oral implant biomechanics

The biomechanical efficiency of oral implants is deeply influenced by mechanical properties of cortical and trabecular bone in the jaw and, in particular, in the peri-implant region. When the mechanical response of the implant-bone system is analysed by means of numerical models, the effective mechanical properties of bone and the possible change as a function of spatial position must be carefully considered. The procedure presented provides for the attribution of the mechanical properties of bone, considered as anisotropic elastic material, as a function of the spatial position making use of Fourier series and polynomial functions. The procedure is implemented in a general purpose finite element software, adopted to develop biomechanical analyses of prosthetic systems. This procedure allows for an accurate representation of bone tissue properties. Results pertaining to the analysis of commercial oral implants show the potential of the method adopted.

[1]  H Tideman,et al.  Biomechanics of mandibular reconstruction: a review. , 2010, International journal of oral and maxillofacial surgery.

[2]  Weinberg La,et al.  The biomechanics of force distribution in implant-supported prostheses. , 1993 .

[3]  J O Katz,et al.  Anisotropic elastic properties of cancellous bone from a human edentulous mandible. , 2000, Clinical oral implants research.

[4]  P. Dechow,et al.  Variations in cortical material properties throughout the human dentate mandible. , 2003, American journal of physical anthropology.

[5]  Arturo N Natali,et al.  Investigation of bone inelastic response in interaction phenomena with dental implants. , 2008, Dental materials : official publication of the Academy of Dental Materials.

[6]  R Puers,et al.  Magnitude and distribution of occlusal forces on oral implants supporting fixed prostheses: an in vivo study. , 2000, Clinical oral implants research.

[7]  G. Romanos,et al.  Histologic and histomorphometric evaluation of peri-implant bone subjected to immediate loading: an experimental study with Macaca fascicularis. , 2002, The International journal of oral & maxillofacial implants.

[8]  J. Davies,et al.  Understanding peri-implant endosseous healing. , 2003, Journal of dental education.

[9]  U C Belser,et al.  Stimulating effect of implant loading on surrounding bone. Comparison of three numerical models and validation by in vivo data. , 2004, Clinical oral implants research.

[10]  H. Weber,et al.  A time-dependent healing function for immediate loaded implants. , 2004, Journal of biomechanics.

[11]  Stephen C Cowin,et al.  Tensile and compressive stress yield criteria for cancellous bone. , 2005, Journal of biomechanics.

[12]  I. Knets.  Peculiarities of the Structure and Mechanical Properties of Biological Tissues* , 2002 .

[13]  Arturo N Natali,et al.  Constitutive modelling of inelastic behaviour of cortical bone. , 2008, Medical engineering & physics.

[14]  S. Cowin.  Bone mechanics handbook , 2001 .

[15]  G Van der Perre,et al.  The influence of bone mechanical properties and implant fixation upon bone loading around oral implants. , 1998, Clinical oral implants research.

[16]  Jie Yang,et al.  A three-dimensional finite element study on the biomechanical behavior of an FGBM dental implant in surrounding bone. , 2007, Journal of biomechanics.

[17]  L A Weinberg,et al.  The biomechanics of force distribution in implant-supported prostheses. , 1993, The International journal of oral & maxillofacial implants.

[18]  Giuseppe Vairo,et al.  Stress-based performance evaluation of osseointegrated dental implants by finite-element simulation , 2008, Simul. Model. Pract. Theory.

[19]  G Dubois,et al.  A complete finite element model of a mandibular implant-retained overdenture with two implants: comparison between rigid and resilient attachment configurations. , 2008, Medical engineering & physics.

[20]  P. Lipinski,et al.  Biomechanical study of mandible bone supporting a four-implant retained bridge: finite element analysis of the influence of bone anisotropy and foodstuff position. , 2009, Medical engineering & physics.

[21]  J W Osborn,et al.  Effects on human maximum bite force of biting on a softer or harder object. , 1998, Archives of oral biology.

[22]  P. Dechow,et al.  Edentulation Alters Material Properties of Cortical Bone in the Human Mandible , 2002, Journal of dental research.

[23]  R DeLong,et al.  Elasticity of alveolar bone near dental implant-bone interfaces after one month's healing. , 2003, Journal of biomechanics.

[24]  C. Hellmich,et al.  Micromechanics-Based Conversion of CT Data into Anisotropic Elasticity Tensors, Applied to FE Simulations of a Mandible , 2008, Annals of Biomedical Engineering.

[25]  N. Sasaki,et al.  Anisotropic viscoelastic properties of cortical bone. , 2004, Journal of biomechanics.

[26]  Yanpu Liu,et al.  Selection of the implant transgingival height for optimal biomechanical properties: a three-dimensional finite element analysis. , 2009, The British journal of oral & maxillofacial surgery.

[27]  P. Dechow,et al.  Accuracy of elastic property measurement in mandibular cortical bone is improved by using cylindrical specimens. , 2002, Journal of biomechanical engineering.

[28]  James Laney Williams,et al.  Anisotropic elasticity of cortical and cancellous bone in the posterior mandible increases peri-implant stress and strain under oblique loading. , 2001, Clinical oral implants research.