title: Predicting bone remodeling around tissue- and bone-level dental implants used in reduced bone width.
abstract: The objective of this study was to predict time-dependent bone remodeling around tissue- and bone-level dental implants used in patients with reduced bone width. The remodeling of bone around titanium tissue-level, and titanium and titanium-zirconium alloy bone-level implants was studied under 100 N oblique load for one month by implementing the Stanford theory into three-dimensional finite element models. Maximum principal stress, minimum principal stress, and strain energy density in peri-implant bone and displacement in x- and y- axes of the implant were evaluated. Maximum and minimum principal stresses around tissue-level implant were higher than bone-level implants and both bone-level implants experienced comparable stresses. Total strain energy density in bone around titanium implants slightly decreased during the first two weeks of loading followed by a recovery, and the titanium-zirconium implant showed minor changes in the axial plane. Total strain energy density changes in the loading and contralateral sides were higher in tissue-level implant than other implants in the cortical bone at the horizontal plane. The displacement values of the implants were almost constant over time. Tissue-level implants were associated with higher stresses than bone-level implants. The time-dependent biomechanical outcome of titanium-zirconium alloy bone-level implant was comparable to the titanium implant.
authors.affiliation: Institute for Materials Applications in Mechanical Engineering, RWTH-Aachen University, Aachen, Germany.
authors.forename: Atilim
authors.initials: A
authors.lastname: Eser
authors.forename: Ergin
authors.initials: E
authors.lastname: Tonuk
authors.forename: Kivanc
authors.initials: K
authors.lastname: Akca
authors.forename: Michel M
authors.initials: MM
authors.lastname: Dard
authors.forename: Murat Cavit
authors.initials: MC
authors.lastname: Cehreli
mesh_terms: D000497:Alloys; D016723:Bone Remodeling / Q000502:physiology*; D001842:Bone and Bones / Q000502:physiology*; D015921:Dental Implants; D055119:Elastic Modulus; D020342:Finite Element Analysis; D006801:Humans; D008954:Models, Biological; D013314:Stress, Mechanical; D014025:Titanium; D015040:Zirconium
chemical_list: D000497:Alloys; D015921:Dental Implants; D015040:Zirconium; D014025:Titanium
keywords: Bone remodelling; Dental implant; Finite element analysis; Titanium; Titanium zirconium alloy