Analysis of loaded mandible behaviour using speckle pattern interferometry

Orthognatic surgeons have a requirement for the measurement of stress distribution within the human lower jaw, in order to aid and improve surgical procedures. Validation of finite element modelling data describing mandible behaviour which has previously been attempted using holographic interferomet...

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Bibliographic Details
Published in:Strain 1999-02, Vol.35 (1), p.3-6
Main Authors: Roman, J. F., Petzing, J. N., Tyrer, J. R.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biomechanics. Biorheology
Boundary conditions
Electronic speckle pattern interferometry
Facial bones, jaws, teeth, parodontium: diseases, semeiology
Finite element method
Fundamental and applied biological sciences. Psychology
Holographic interferometry
holography
mandible behaviour
Mathematical models
Mechanical variables measurement
Medical sciences
Non tumoral diseases
Otorhinolaryngology. Stomatology
Speckle
Strain
Stress concentration
Tissues, organs and organisms biophysics
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Summary:Orthognatic surgeons have a requirement for the measurement of stress distribution within the human lower jaw, in order to aid and improve surgical procedures. Validation of finite element modelling data describing mandible behaviour which has previously been attempted using holographic interferometry. Electronic speckle pattern interferometry (ESPI), a whole field non‐contact optical technique has been applied to the study of a dry human mandible under load. This technique improves over previous methods by generating discrete quantitative displacement and strain components. The optical analysis of a dry mandible is described, with the results viewed in ‘real time’ as progressively greater forces were applied on the lower border of the chin, in the upwards (impact) direction with biting boundary conditions included in the experimental model. This has shown that the bone tissue holding the front teeth transmits the forces impacting on the chin, which are absorbed by the basal bone of the mandible.
ISSN:0039-2103
1475-1305
DOI:10.1111/j.1475-1305.1999.tb01111.x