title: Finite element analysis of different surgical approaches in various occlusal loading locations for zygomatic implant placement for the treatment of atrophic maxillae.
abstract: The aim of this study was to compare two different types of surgical approaches, intrasinus and extramaxillary, for the placement of zygomatic implants to treat atrophic maxillae. A computational finite element simulation was used to analyze the strength of implant anchorage for both approaches in various occlusal loading locations. Three-dimensional models of the craniofacial structures surrounding a region of interest, soft tissue and framework were developed using computed tomography image datasets. The implants were modelled using computer-aided design software. The bone was assumed to be linear isotropic with a stiffness of 13.4 GPa, and the implants were assumed to be made of titanium with a stiffness of 110 GPa. Masseter forces of 300 N were applied at the zygomatic arch, and occlusal loads of 150 N were applied vertically onto the framework surface at different locations. The intrasinus approach demonstrated more satisfactory results and could be a viable treatment option. The extramaxillary approach could also be recommended as a reasonable treatment option, provided some improvements are made to address the cantilever effects seen with that approach.
authors.affiliation: Medical Implant Technology Group, Department of Biomechanics and Biomedical Materials, Faculty of Biomedical Engineering and Health Sciences, Universiti Teknologi Malaysia, 81310, Malaysia.
authors.forename: M I
authors.initials: MI
authors.lastname: Ishak
authors.forename: M R
authors.initials: MR
authors.lastname: Abdul Kadir
authors.forename: E
authors.initials: E
authors.lastname: Sulaiman
authors.forename: N H
authors.initials: NH
authors.lastname: Abu Kasim
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D017076:Computer-Aided Design; D003758:Dental Implantation, Endosseous / Q000379:methods*; D017267:Dental Prosthesis Design / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D003824:Denture, Complete; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D008443:Maxillary Sinus / Q000601:surgery*; D008953:Models, Anatomic; D015050:Zygoma / Q000601:surgery*