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

Autor: Costa DL; Oral and Maxillofacial Surgery Department at Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS Brazil., Torres AM; Oral and Maxillofacial Surgery Department at Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS Brazil., Bergamaschi IP; Oral and Maxillofacial Surgeon, Private Practice, Rua XV de Novembro 2177 - Alto XV, Curitiba, PR CEP 80.045-125 Brazil., Kluppel LE; Oral and Maxillofacial Surgery Department at Federal University of Paraná, Curitiba, PR Brazil., de Oliveira RB; Oral and Maxillofacial Surgery Department At Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS Brazil., Weber JBB; Pediatrics Department at Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS Brazil.
Jazyk: angličtina
Zdroj: Journal of maxillofacial and oral surgery [J Maxillofac Oral Surg] 2022 Sep; Vol. 21 (3), pp. 779-784. Date of Electronic Publication: 2021 May 02.
DOI: 10.1007/s12663-021-01581-6
Abstrakt: 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.
Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest.
(© The Association of Oral and Maxillofacial Surgeons of India 2021.)
Databáze: MEDLINE
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