NDLI: Three-dimensional finite element analysis of fixed complete-arch prostheses supported by 4 immediate-loaded implants in the completely edentulous maxilla using clinical computerized tomography data.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kimura, Katsuhiko Fukase, Yasumasa Makino, Michiko Masaki, Chihiro Nakamoto, Tetsuji Hosokawa, Ryuji
Description	Country affiliation: Japan Author Affiliation: Kimura K ( Department of Oral Reconstruction and Rehabilitation, Kyusyu Dental College, Japan.)
Abstract	Mechanical simulation by loading an occlusal force (load), assumed to be that loaded under clinical conditions, was performed in a computerized tomography (CT) data-based immediate-loaded implant placement simulation. Stresses on and displacements of the implants and surrounding bone tissue were analyzed mechanically using 3-dimensional finite element analysis (FEA). The purpose of this study was to investigate the possibility of practical preoperative design and its evaluation and to assess the effects of connected fixation. Implants with a diameter of 4.0 mm were placed in the bilateral upper incisor and second premolar regions in a 69-year-old woman. An X-ray CT of the head was carried out, and implant placement simulation and 3-dimensional FEA models were constructed from the CT data. Forces were loaded on 4 individual implants placed in this model or all connected implants, and a mechanical analysis was performed. A 100-N vertical force was loaded on each implant as individual loading for the control group, and a 400-N vertical force was loaded on the connected implants as connected loading for the test group. The displacement and stress distributions were assessed using the 3-dimensional FEA. In the test group, established on the assumption of connected fixation for provisional restoration facilitating immediate loading, the maximum stress and displacement of peri-implant bone were smaller than those in the control group undergoing individual loading. The implant displacement level was suggested to serve as a numerical prognostic index of osseointegration of immediate-loaded implants. This method was shown to be immediately applicable to implant placement simulations using CT data currently generated in clinical practice, with no modification. Such a mechanical assessment using the FEA model can be performed noninvasively.
File Format	HTM / HTML
ISSN	01606972
Volume Number	37 Spec No
e-ISSN	15481336
Journal	Journal of Oral Implantology
Language	English
Publisher	American Association of Implant Dentistry
Publisher Date	2011-03-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Dentistry Discipline General Surgery Computer-aided Design Dental Prosthesis, Implant-supported Instrumentation Dental Stress Analysis Methods Denture Design Denture, Complete, Upper Aged Computer Simulation Dental Implantation, Endosseous Dental Implants Denture Retention Female Finite Element Analysis Humans Imaging, Three-dimensional Jaw, Edentulous Rehabilitation Maxilla Models, Anatomic Patient Care Planning Stress, Mechanical Therapy, Computer-assisted Tomography, X-ray Computed Journal Article
Content Type	Text
Resource Type	Article
Subject	Oral Surgery

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