Stress distribution around dental implants: influence of superstructure, length of implants, and height of mandible.
The stress distribution around dental implants was investigated by use of a two-dimensional model of the mandible with two implants. A vertical load of 100 N was imposed on abutments or the bar connection. The stress was calculated for a number of superstructures under different loading conditions with the help of the finite element method. The length of the implants and the height of the mandible were also varied. A model with solitary abutments showed a more uniform distribution of the stress when compared with a model with connected abutments. The largest compressive stress was also less in the model without the bar. Using shorter implants did not have a large influence on the stress around the implants. When the height of the mandible was reduced, a substantially larger stress was found in the bone around the implants because of a larger overall deformation of the lower jaw.
Meijer
H J
HJ
Department of Oral-Maxillofacial Surgery, Prosthodontics, and Special Dental Care, University of Utrecht, Faculty of Medicine, The Netherlands.
Kuiper
J H
JH
Starmans
F J
FJ
Bosman
F
F
D001732:Bite Force; D001842:Bone and Bones / Q000473:pathology / Q000503:physiopathology; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003779:Denture Design; D006801:Humans; D007575:Jaw, Edentulous / Q000473:pathology* / Q000503:physiopathology*; D008334:Mandible / Q000473:pathology* / Q000503:physiopathology*; D008409:Mastication; D008954:Models, Biological; D013314:Stress, Mechanical; D013499:Surface Properties; D014716:Vertical Dimension
D015921:Dental Implants