Comparison and validation of finite element analysis with a servo-hydraulic testing unit for a biodegradable fixation system in a rabbit model

Abstract The aim of this study was the biomechanical validation of three-dimensional finite element analysis (FEA) with a servo-hydraulic testing unit (STU) for a resorbable fixation system (RFS) in a rabbit model. Bilateral mandibular vertical body osteotomies (BMVBO) were performed in 15 female Ne...

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Bibliographic Details
Published in:International journal of oral and maxillofacial surgery 2014-01, Vol.43 (1), p.32-39
Main Authors: Atali, O, Varol, A, Basa, S, Ergun, C, Hartomacıoğlu, S
Format: Article
Language:English
Subjects:
Animals
biodegradable implant
Biomechanical Phenomena
biomechanics
Bone Plates
Bone Screws
Dental Implantation, Endosseous - methods
Dentistry
Female
Finite Element Analysis
Imaging, Three-Dimensional
mandible
Mandible - diagnostic imaging
Mandible - surgery
Materials Testing
Models, Anatomic
osteotomy
Osteotomy, Sagittal Split Ramus
Rabbits
Stress, Mechanical
Surgery
Tomography, X-Ray Computed
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Summary:Abstract The aim of this study was the biomechanical validation of three-dimensional finite element analysis (FEA) with a servo-hydraulic testing unit (STU) for a resorbable fixation system (RFS) in a rabbit model. Bilateral mandibular vertical body osteotomies (BMVBO) were performed in 15 female New Zealand rabbits. The animals were divided into three groups. The STU and FEA tests were done immediately after surgery in group 1 (1 day), at the first postoperative month in group 2, and at the third postoperative month in group 3. Both stress tests were carried out by applying vertical forces at the lower incisal edge, loading from 0 N force and increasing this until breakage occurred at the bone. The maximum forces that the hemimandibles could stand and the amount of deformation were recorded and analysed with the FEA and STU tests. We found the STU and FEA test results to be similar and that they could be used interchangeably for groups 1 and 3. However, the FEA results differed most from the real STU values in group 2 because of callus formation that had not ossified at the osteotomy line.
ISSN:0901-5027
1399-0020
DOI:10.1016/j.ijom.2013.06.007