Dynamic Simulation and Finite Element Analysis of the Maxillary Bone Injury Around Dental Implant During Chewing Different Food

Abstract

Since a long term patency of the dental implant has a direct relationship with their biomechanical performance, it is of vital important to understand the stresses and deformations that happen during chewing around the dental implant and bone. However, this model so far has not been well realized and this is why in this study we aim to establish a Finite Element (FE) model to analyse the stresses and deformations. A trajectory approach has been used to implement the action of muscles into the mode. To do this, a cornflake bio is mounted between the teeth and force applied until the breakage of the food in mouth. Furthermore, an experimental study was performed using the Digital Image Correlation (DIC) method and a set of three markers used to verify the numerical observations. The results revealed that in the maxillary bones, the maximum stresses were located within the cortical bone surrounding the implant and within the neck of implant. In addition, as the elastic modulus of the food is increased the stress in cortical bone increased accordingly. The results also revealed that the highest stress in the system is 74% of the yield stress while this value has been reported as 41% in previous studies.

Finite element modeling of the periodontal ligament under a realistic kinetic loading of the jaw system

“…A 3D FE model of the human mandible was made according to our previous studies ( Karimi et al, 2014 , Razaghi et al, 2017 , Razaghi et al, 2016 ). Briefly, the solid models which were meshed with hexahedral elements consisted of the mandible bone, cortical and cancellous bones, PDL, pulp, dentine, enamel, and food (cornflakes bio) as displayed in Fig.…”

“…Having a realistic kinetic loading of the jaw system for movements such as chewing would help mimic the same pattern of motions that occurs during chewing in the mandibular system ( Hannam et al, 2008 ). This approach to measuring kinetic loadings, such as muscle force and trajectory ( Razaghi et al, 2017 , Razaghi et al, 2016 ), has been used in the recent publications of our group to mimic the kinetic loading of a jaw system during chewing. FEM models have been developed to calculate the stresses and deformations in the PDL under a combination of chewing and orthodontic ( Horina et al, 2018 ) or chewing only forces ( Martinez Choy et al, 2017 ).…”

Progress of finite element analysis method for oral implantology

“…In recent years, with the development of implant concepts and 3D printing technology, personalized root-shaped implants are gradually being noticed. Unlike conventional implant placement, personalized root-shaped implants do not require preparation for implant placement and mimic the biological behavior of natural teeth [47] . The biomechanical performance of the personalized root-shaped implant was studied by FEA, and it was found that the main set of stresses during inclined loading of the personalized root-shaped implant was located around the neck of the implant on the stressed side, and the stress maximum in the jawbone was located in the labial cortical bone region.…”

Biomechanical comparison of implantation approaches for the treatment of mandibular total edentulism

“…To obtain high computational precision, the tetrahedral element type was selected for the mandible, prosthetic bar, dental implant, abutment, and screw models. 27 According to the mesh convergence tests, 28 1.7-mm global edge length was specified for the tetrahedral element in the mandible models. For the dental implant, abutment, and screw meshing, 0.3-mm global edge length was chosen.…”