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Assessment of Resorbable and Non-resorbable Fixation Systems in Sagittal Split Ramus Osteotomy: An In vitro Study

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Abstract

Objective

The internal fixation has been purpose of study for many years, but there is still no consensus on the best method of fixation in relation to resistance for bilateral sagittal split ramus osteotomy (BSSO) using plates. Therefore, the aim of this study was to assess five different methods of osteosynthesis using resorbable and non-resorbable plates and screws in simulated sagittal split osteotomy (SSO) of the mandibular ramus.

Materials and Methods

SSO was performed in 25 polyurethane synthetic mandibular replicas. The distal segments were moved forward 5 mm, and the specimens were grouped according to the fixation method: Inion resorbable plate, KLS resorbable plate, standard four-hole titanium miniplate (Medartis), two standard four-hole titanium miniplates (Medartis) and an adjustable titanium miniplate (Slider/Medartis). Mechanical evaluation was performed by applying compression loads to first molar using an Instron universal testing machine up to a 5 mm displacement of the segments. Resistance forces were obtained in Newtons (N), and statistical analysis was performed using the software R v. 3.5 with significance level of 0.05. Linear mixed models were used to compare the force required to move each type of plate.

Results

The results showed that the resistance of SSO was better accomplished using two titanium miniplates and KLS resorbable plate showed the least resistance. However, both titanium and resorbable plates behaved similarly in small displacements, which are most commonly observed in BSSO postoperative time.

Conclusion

It can be concluded that both resorbable and non-resorbable systems might offer suitable mechanical resistance in the procedures where there are no mechanical postoperative complications.

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Authors and Affiliations

  1. Oral and Maxillofacial Surgery Department at Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil

    Davani Latarullo Costa & Alexandre Machado Torres

  2. Oral and Maxillofacial Surgeon, Private Practice, Rua XV de Novembro 2177 – Alto XV, Curitiba, PR, CEP 80.045-125, Brazil

    Isabela Polesi Bergamaschi

  3. Oral and Maxillofacial Surgery Department at Federal University of Paraná, Curitiba, PR, Brazil

    Leandro Eduardo Kluppel

  4. Oral and Maxillofacial Surgery Department At Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil

    Rogério Belle de Oliveira

  5. Pediatrics Department at Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil

    João Batista Blessmann Weber

Authors
  1. Davani Latarullo Costa
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  2. Alexandre Machado Torres
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  3. Isabela Polesi Bergamaschi
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  4. Leandro Eduardo Kluppel
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  5. Rogério Belle de Oliveira
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  6. João Batista Blessmann Weber
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Correspondence to Isabela Polesi Bergamaschi.

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Costa, D.L., Torres, A.M., Bergamaschi, I.P. et al. Assessment of Resorbable and Non-resorbable Fixation Systems in Sagittal Split Ramus Osteotomy: An In vitro Study. J. Maxillofac. Oral Surg. 21, 779–784 (2022). https://doi.org/10.1007/s12663-021-01581-6

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  • DOI: https://doi.org/10.1007/s12663-021-01581-6

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