A comparative finite element analysis of two types of axial and radial functionally graded dental implants with titanium one around implant-bone interface

Abstract

Functionally graded biomaterials (FGBMs) have received significant attention in the recent years as potential candidates for the next generation of dental implant improvement. This happened due to their unique advantages and their ability to satisfy the requirements of both biomechanical and biocompatibility properties simultaneously. This study was aimed to analyze the effects of two radial and axial FGBM dental implants on the stress distribution near the dental implant-bone interface under a static load using finite element method (FEM). The model was restrained on a base supporting bone and vertically loaded with a force of 100 N on the top of the abutment. In the FGBM models, the implants are made of a combination of bioceramic and biometal composition, with properties that change gradually and continuously in the radial and axial directions. The numerical results indicated that the use of both radial and axial FGBM dental implants reduced the maximum von Mises stress in the cortical and the cancellous bones in comparison with the common titanium one, which leads to faster bone regeneration and early stabilization of dental implant system. The findings of the present study may have implications not only for understanding the stresses and deformations around the implant-bone interface but also for improving the performance as well as application of FGBMs in dental implant materials.

Life Prediction and Experimental Validation of a 3d Printed Dental Titanium Ti64ELI Implant

“…The mesh size was achieved by gradually reducing the default mesh size of the implant until the stress curve started to flatten out and a constant result was obtained. Implant 114000 0,34 [22], [23], [26] Embedding Material 4400 0,29 [19], [21] [A]…”

Comparative study of stress characteristics in surrounding bone during insertion of dental implants of three different thread designs: A three‐dimensional dynamic finite element study

“…Two factors affecting the simulation were implant material and surface roughness. Optimum implant material properties lead to increased bone regeneration and early stabilization of the dental implant system (Shamami, Karimi, Beigzadeh, Haghpanahi, & Navidbakhsh, 2014;Shirazi, Ayatollahi, Karimi, & Navidbakhsh, 2016). Increased surface roughness increases the friction coefficient between the material surfaces (Dos Santos, Elias, & Cavalcanti Lima, 2011).…”

Biomechanical analysis of a radial functionally graded dental implant–bone system under multi-directional dynamic loads

“…Functionally graded dental implants, as a new design of such systems with elective configurations, have attracted substantial attention in the last decade as potential candidates for the next generation of dental implants [13,14]. In fact, functionally graded biomaterials (FGBMs) have been recently introduced in dental implants owing to their unique advantages and being able to satisfy simultaneously many requirements and possess properties such as nontoxicity, corrosion resistance, thermal conductivity, strength, fatigue durability, and biocompatibility.…”

“…In previous studies, FGBM implants were usually graded in radial direction [15][16][17][18][19][20]. They showed that employing axial FGBM implants resulted in stress reduction in the implanted bone [14][15][16][17] and biocompatibility improvement in the dental implant system [18][19][20]. As an alternative approach, the gradient can be distributed radially so that the properties of radial FGBM implant varied gradually from a stiffer biomaterial in the center of the implant to a more biocompatible and bioactive material as the outer layer in contact with the hosting bone.…”