Analysis of the compressive strain below the removable and fixed prosthesis in the posterior mandible using a digital image correlation method

It was the purpose of this study to determine and analyse strains in the bone of posterior mandible below the removable and fixed partial dentures using Digital Image Correlation Method. Dried mandible with shortened dental arch (Kennedy Class 1) was used in the experiment. The mandible model was pr...

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Bibliographic Details
Published in:Biomechanics and modeling in mechanobiology 2012-07, Vol.11 (6), p.751-758
Main Authors: Tanasic, Ivan, Milic-Lemic, Aleksandra, Tihacek-Sojic, Ljiljana, Stancic, Ivica, Mitrovic, Nenad
Format: Article
Language:English
Subjects:
Biological and Medical Physics
Biomechanics
Biomedical Engineering and Bioengineering
Biophysics
Compressive Strength - physiology
Denture, Partial, Fixed
Denture, Partial, Removable
Dentures
Digital imaging
Engineering
Humans
Image Processing, Computer-Assisted - methods
Jaw, Edentulous, Partially - pathology
Male
Mandible
Middle Aged
Models, Biological
Original Paper
Prostheses
Space life sciences
Stress, Mechanical
Theoretical and Applied Mechanics
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Summary:It was the purpose of this study to determine and analyse strains in the bone of posterior mandible below the removable and fixed partial dentures using Digital Image Correlation Method. Dried mandible with shortened dental arch (Kennedy Class 1) was used in the experiment. The mandible model was prepared for accepting two types of restorations for bilaterally missing molars conventional therapy, and removable and fixed partial dentures were manufactured following standard prosthetic protocol. The models with prosthetic restorations placed in situ were subjected to loading of 50–300 N, and photographed using two digital cameras as part of the digital image correlation method equipment. Afterwards, the obtained data for strains within restored mandible during loading ciclus were analysed in the software Aramis and graphically presented. Percentage size of the mandible strains within the line section are from 0.14 to 0.19% for the removable partial denture experimental model and 0–0.14% for the fixed partial denture experimental model. The study has demonstrated that Digital Image Correlation method can be used to measure strain on the mandible surface and replacements during loading and that from biomechanical perspective both therapeutic modalities can be equally useful for the restoration of the mandible with bilaterally distal edentulous spaces.
ISSN:1617-7959
1617-7940
DOI:10.1007/s10237-011-0348-5