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Biomechanical comparison of transoral and transbuccal lateral cortical plate fixation for the management of mandibular angle fractures


1 Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ordu University, 52200, Ordu, Turkey
2 Department of Oral and Maxillofacial Surgery, Faculty of Engineering, Ataturk University, 25240, Erzurum, Turkey
3 Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, 25240, Erzurum, Turkey
4 Department of Electrical and Electronics Engineering, Faculty of Engineering, Ondokuz Mayis University, 55100, Samsun, Turkey

Correspondence Address:
MM Omezli,
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ordu University, 52200, Ordu
Turkey
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Source of Support: None, Conflict of Interest: None

Objectives: The purpose of this experimental study was to compare the biomechanical behaviors of two different types of osteosynthesis that are used in the treatment of mandibular angle fractures. Materials and Methods: Twenty synthetic polyurethane human mandible replicas, with medullar and cortical portions, were used in this study. These polyurethane hemimandibles were randomly divided into two groups (n = 10). The transbuccal group (Group A) was fixed with 7 mm long self-tapping 2.0 mm titanium screws at 85° to the reference line and the transoral group (Group B) was fixed with the same screws at 15° to the reference line. All testings were performed on a servo-hydraulic testing machine. The data were transmitted directly from the load cell to a computer, which showed the emergent results of the material characteristics under resisted forces as a graphic containing force and displacement. The peak point loading and displacement for each subject were measured. Results: The comparison between the groups was analyzed with an independent-samples t-test, and P< 0.05 was considered to be significant. The results show that there were no significant differences between the groups for the peak loads and displacement values at the peak loads. Conclusion: The results of this experimental study demonstrated that there were no significant differences between the transbuccal and transoral methods in terms of fixation stability. In other words, the screw position and angle seemed to no have influence on the fixation stability in single miniplate treatments of a mandibular angle fracture.


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    -  Omezli M M
    -  Ayranci F
    -  Polat M E
    -  Dayi E
    -  Ghahramanzadehasl H
    -  Karagol S
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