Three-dimensional finite element stress analysis of mandibular unilateral distal-extension with extra-coronal precision attachment.
- Author:
Bolei SUN
1
;
Yubo FAN
;
Zhan LIU
;
Yingli QIAN
;
Yandong MU
Author Information
1. Laboratory of Bioengineering, Sichuan University, Chengdu 610065, China.
- Publication Type:Journal Article
- MeSH:
Dental Stress Analysis;
Denture Precision Attachment;
Denture, Partial, Removable;
Finite Element Analysis;
Humans;
Imaging, Three-Dimensional;
methods;
Mandible;
diagnostic imaging;
physiology;
Models, Biological;
Tomography, X-Ray Computed
- From:
Journal of Biomedical Engineering
2007;24(1):116-119
- CountryChina
- Language:Chinese
-
Abstract:
From alveolar bone and the complete dentition CT images, a three-dimensionalysis of nonlinear finite element model of mandibular unilateral distal-extension with extracoronal precision attachment was established. The contact elements were used between the denture and alveolar bone. The result shows that, the stress in the second premolar and periodontal tissue decreased obviously as the second abutment was added. However, the stress difference was unapparent as the third abutment was added. Considering various facts, the attachment with two abutments was suggested to be used. With the decrease of the periodontal tissue, the stress in the periodontal tissue increased, however the stress in the tooth changed slightly. Thestress in the periodontal tissue decreased effectively when the third abutment was added, as the tooth root was absorbed by 50%. In this situation, the extracoronal precision attachment can also be used.
