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Effect of bone quality on the artificial temporomandibular joint condylar prosthesis.
- Source :
-
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics [Oral Surg Oral Med Oral Pathol Oral Radiol Endod] 2010 Jun; Vol. 109 (6), pp. e1-5. - Publication Year :
- 2010
-
Abstract
- Objective: This study evaluated the effect of bone quality on the stability of and stress in the artificial temporomandibular joint (TMJ) condylar prosthesis as well as on the stress and strain distributions in the bone.<br />Study Design: Three-dimensional finite element models of the mandible and an artificial TMJ condylar prosthesis using 3 screws were established. Four types of bone were modeled by varying the elastic modulus of cancellous bone.<br />Results: Increasing the bone quality from type IV to type I reduced the maximum relative micromotion between implant and bone, maximum von Mises stresses in the implant and surrounding cortical bone, and maximum von Mises strain in the surrounding cancellous bone by 17.5%, 10.5%, 12.0%, and 39.4%, respectively.<br />Conclusion: The bone quality of the mandible has only a minor effect on the stability of and stress in an artificial TMJ implant and cortical bone, but it greatly affects the microstrain in cancellous bone.<br /> (Copyright 2010 Mosby, Inc. All rights reserved.)
- Subjects :
- Biomechanical Phenomena
Computer Simulation
Dental Prosthesis Design
Elastic Modulus
Finite Element Analysis
Humans
Imaging, Three-Dimensional
Stress, Mechanical
Bone Density
Dental Stress Analysis
Joint Prosthesis
Mandibular Condyle pathology
Models, Anatomic
Temporomandibular Joint pathology
Subjects
Details
- Language :
- English
- ISSN :
- 1528-395X
- Volume :
- 109
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics
- Publication Type :
- Academic Journal
- Accession number :
- 20451824
- Full Text :
- https://doi.org/10.1016/j.tripleo.2010.02.005