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Oral and Maxillofacial Surgery

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12-01-2022 | Original Article

Does the type of sagittal split ramus osteotomy influence fixation strength? Evaluation of the mechanical behavior of two types of fixation used in three types of sagittal split ramus osteotomy

Authors: Soraya da Silva Oliveira, Pedro Henrique Mattos de Carvalho, Cássio Edvard Sverzut, Alexandre Elias Trivellato

Published in: Oral and Maxillofacial Surgery | Issue 4/2022

Abstract

Purpose

This study compared the mechanical behavior of two fixation techniques used in three sections representing the sagittal split ramus osteotomy (SSRO) in polyurethane replicas that were divided into groups, according to type of section, and sub-groups according to type of fixation, simulating 11-mm advancement and 6º clockwise mandibular rotation.

Methods

Loads were applied in two regions, aiming at progressive application and consequent strength value, measured in kilogram-force in displacements of 1, 3, 5, and 7 mm, from the load application tip. Shapiro–Wilk test was performed, followed by two-way analysis of variance (ANOVA-2 way), and Bonferroni’s multiple comparison.

Results

The results showed no statistically significant difference in the type of section and type of fixation used when load was applied to the inter-incisor region. However, when load was applied to the first molar region, statistically significant difference was observed in 1-mm displacement, in which section described by Epker with two modifications showed greater strength, regardless of type of fixation used (p = 0.007).

Conclusion

In the application of load in the inter-incisor region, there was no statistical difference between the type of osteotomy and the type of fixation used. When applying loads to molars, there was a difference for the type of osteotomy, where the Epker osteotomy with 2 modifications presented greater resistance, regardless of the type of fixation used.

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Title: Does the type of sagittal split ramus osteotomy influence fixation strength? Evaluation of the mechanical behavior of two types of fixation used in three types of sagittal split ramus osteotomy
Authors: Soraya da Silva Oliveira
Pedro Henrique Mattos de Carvalho
Cássio Edvard Sverzut
Alexandre Elias Trivellato
Publication date: 12-01-2022
Publisher: Springer Berlin Heidelberg
Published in: Oral and Maxillofacial Surgery / Issue 4/2022
Print ISSN: 1865-1550
Electronic ISSN: 1865-1569
DOI: https://doi.org/10.1007/s10006-022-01038-1

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Does the type of sagittal split ramus osteotomy influence fixation strength? Evaluation of the mechanical behavior of two types of fixation used in three types of sagittal split ramus osteotomy

Abstract

Purpose

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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