Assessment of Resorbable and Non-resorbable Fixation Systems in Sagittal Split Ramus Osteotomy: An In vitro Study
| Autor: | João Batista Blessmann Weber, Isabela Polesi Bergamaschi, Davani Latarullo Costa, Alexandre Machado Torres, Leandro Eduardo Klüppel, Rogério Belle de Oliveira |
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| Rok vydání: | 2020 |
| Předmět: |
Orthodontics
Universal testing machine Osteosynthesis business.industry medicine.medical_treatment 030206 dentistry musculoskeletal system Compression (physics) Mandibular first molar 03 medical and health sciences Fixation (surgical) 0302 clinical medicine Otorhinolaryngology Sagittal Split Ramus Osteotomy medicine Internal fixation Surgery Displacement (orthopedic surgery) Oral Surgery 030223 otorhinolaryngology business |
| Zdroj: | Journal of maxillofacial and oral surgery. 21(3) |
| ISSN: | 0972-8279 |
| Popis: | 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. 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. 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. 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. |
| Databáze: | OpenAIRE |
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