Biomechanical analysis on different fixation techniques for treatment of mandibular body fractures

Authors

  • Marcela Ribeiro UNICAMP
  • Andrezza Lauria UNICAMP
  • Fábio Ricardo Loureiro Sato UNICAMP
  • Roger William Fernandes Moreira UNICAMP

DOI:

https://doi.org/10.20396/bjos.v12i2.8641062

Keywords:

Mandibular fractures, Bone plates, Internal fixation of fractures

Abstract

Aim: To biomechanically analyze two fixation techniques in polyurethane hemi-mandibular body fractures, using a universal testing machine. Methods: The study employed 10 polyurethane hemi-mandible replicas, which simulated simple fractures of the mandibular body, divided into two groups: one group comprised 5 hemi-mandibles with two 2.0 mm system plates in the tension and compression zones, while the other group contained 5 hemi-mandibles with an Erich bar and a 2.0 mm system plate in the tension and neutral zones, respectively. Data were analyzed statistically by the Student’s t-test (α=0.05) Results: The test results indicated that the fixation using 2.0 mm system plates offered significantly more resistance to the loads and presented significantly larger displacement compared to the fixation using just one 2.0 mm system plate and the Erich bar. Conclusions: It may be concluded that the use of two plates in the 2.0 mm system had greater mechanical strength than a single 2.0 mm plate combined with an Erich bar. Clinically, it is known that both techniques can provide good results, but patients receiving the combination of Erich bar and one plate are required to be more cooperative during the postoperative period, especially with respect to the prescribed diet in order to avoid failures in this system.

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Author Biographies

Marcela Ribeiro, UNICAMP

Area of Oral and Maxillofacial Surgery, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Andrezza Lauria, UNICAMP

Area of Oral and Maxillofacial Surgery, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Fábio Ricardo Loureiro Sato, UNICAMP

Area of Oral and Maxillofacial Surgery, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Roger William Fernandes Moreira, UNICAMP

Area of Oral and Maxillofacial Surgery, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Published

2015-10-16

How to Cite

1.
Ribeiro M, Lauria A, Sato FRL, Moreira RWF. Biomechanical analysis on different fixation techniques for treatment of mandibular body fractures. Braz. J. Oral Sci. [Internet]. 2015 Oct. 16 [cited 2022 Dec. 1];12(2):80-3. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641062

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