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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN:
Vol. 12, No. 2, 2013, pp. 80-83
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Bioline Code: os13017
Full paper language: English
Document type: Research Article
Document available free of charge
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Brazilian Journal of Oral Sciences, Vol. 12, No. 2, 2013, pp. 80-83
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Biomechanical analysis on different fixation techniques for treatment of mandibular body fractures
Ribeiro, Marcela; Lauria, Andrezza; Loureiro Sato, Fábio Ricardo & Fernandes Moreira, Roger William
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.
Keywords
mandibular fractures, bone plates, internal fixation of fractures
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