Cranial Maxillofac Trauma Reconstruction
DOI: 10.1055/s-0037-1603455
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Comparison of the Stability of Mandibular Sagittal Osteotomy Fixation between Two Types of Titanium Miniplates: A Biomechanical Study in Sheep Mandibles

Guilherme dos Santos Trento1, Felipe Andrade Pires2, Fábio André dos Santos3, Delson João da Costa4, Nelson Luis Barbosa Rebellato4, Leandro Eduardo Klüppel2, 4
  • 1Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery, São Paulo State University, Araraquara, São Paulo, Brazil
  • 2Department of Oral and Maxillofacial Surgery, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
  • 3Department of Periodontology, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
  • 4Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Paraná, Brazil
Further Information

Publication History

09 December 2016

18 February 2017

Publication Date:
18 May 2017 (eFirst)


This study aimed to compare the biomechanical stability of the fixation of mandibular sagittal split osteotomy of the ramus by two types of titanium miniplates in sheep mandibles. Seven preserved sheep mandibles with similar weight and size were selected, dissected with complete removal of soft-tissue structures, and sectioned in their midline. After performing sagittal split osteotomy, 5 mm of advancement was standardized and samples were divided into two groups according to the type of titanium miniplate (GI = seven hemimandibles were fixed with straight titanium miniplate, GII = seven hemimandibles were fixed with L-shaped titanium miniplates), and then subjected to compressive load. The means (standard deviation) of the compressive load and extension values were 70.68 N (22.26) and 63.36 mm (15.60) to straight miniplates, and 78.80 N (32.54) and 70.55 mm (5.42) to L-shaped miniplates. After comparison and statistical analysis, the results showed no significant difference between the two types of titanium miniplates.