Stress in bone adjacent to dental implants

Abstract

Finite element analysis (FEA) was employed to assess patterns of stress in bone adjacent to an implant after application of loads through an attached distal extension cantilever. Under all loading conditions, the highest stresses occurred at the distal cervical bone margin adjacent to the cantilever. In clinical studies, this is not consistently the site of the greatest bone changes seen radiographically. This suggests that extrapolation of FEA studies to clinical implantology should be approached with caution until further data become available on both mechanical properties of bone and patterns of bone remodelling induced by defined functional stresses in mandible and maxillae.

Finite‐Element Analysis of Stress on Dental Implant Prosthesis

“…Because the occlusal load will be transferred to the implants and subsequently to the bone, it is believed that the biomechanics of the implant‐supported prosthesis play an important role in the longevity of the bone around dental implants 4 . It is commonly found in the literature that, for cantilevered implant‐supported mandibular prosthesis, stresses tend to be concentrated at the cortical bone on the disto‐lingual aspect of the implant closest to the load 2,5–8 . Many researchers have focused on the steps of force transfer to gain insight into the biomechanical effect of force directions, force magnitudes, prosthesis type, prosthesis material, implant design, number and distribution of supporting implants, bone density, and the mechanical properties of the bone‐implant interface 9 .…”

The Effect of Fixture Neck Design in a Realistic Model of Dental Implant: A Finite Element Approach

“…In most studies the preloading problem is either neglected [13,15], or only the axial stress is simulated omitting the tangential one [18,22,23]. These important approximations strongly influence the assessment of the system reliability, underestimating the actual stress present in the components before the load application.…”

To what extent residual alveolar ridge can be preserved by implant? A systematic review

“…Favorable bone remodeling may occur close to implants in partially edentulous patient because of the chance to be surrounded by alveolar rather than basal bone [26]. Thus, the cortical bone reveals more force concentration and liability to resorb rather than the cancellous bone showing more liability to accommodate with the induced forces [87, 88]. According to Chou et al [89], the topography of the fixture reported alternative responses to load promotes a variation of bone remodeling.…”