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Now showing items 1-10 of 54
The effect of locked screw angulation on the biomechanical properties of the S.P.S. Free-Block plate
(2013-03-27)
Objectives: Among the locked internal fixators is one denominated S.P.S. (Synthesis Pengo System) Free-Block, which was designed with a locking ring that allows the screw to be locked and positioned obliquely. Due to the ...
In vitro comparison of 1.5 mm vs. 2.0 mm screws for fixation in the sagittal split osteotomy
(Churchill Livingstone, 2011-12-01)
Purpose: Numerous "in vitro" investigations have been conducted to evaluate the role of screw size and pattern in determining optimal resistance to deformation, often these have been controversial. The aim of this study ...
Fixation of autogenous bone grafts with ethyl-cyanoacrylate glue or titanium screws in the calvaria of rabbits
(Churchill Livingstone, 2009-02-01)
This study compared the fixation of autogenous onlay bone grafts with cyanoacrylate glue (Super Bonder) and with titanium screws. Twenty rabbits underwent bilateral parietal ostectomies. Bone segments were fixed anteriorly ...
Effect of the number of screws on the stability of locking mandibular reconstruction plates
(2013-03-25)
Atrophic mandible fractures are frequently a challenge to stabilize. This study evaluated, through mechanical testing in vitro, the number of locking screws that is sufficient to withstand loading when applied with a locking ...
In vitro biomechanical evaluation of sagittal split osteotomy fixation with a specifically designed miniplate
(2013-03-01)
Recent studies have evaluated many methods of internal fixation for sagittal split ramus osteotomy (SSRO), aiming to increase stability of the bone segments while minimizing condylar displacement. The purpose of this study ...
In vitro evaluation of conventional and locking miniplate/screw systems for the treatment of mandibular angle fractures
(Churchill Livingstone, 2010-11-01)
This in vitro study evaluated the influence of the type of miniplate and the number of screws installed in the proximal and distal segments on the stability and resistance of Champy's osteosynthesis in mandibular angle ...
Rigid internal fixation with titanium versus bioresorbable miniplates in the repair of mandibular fractures in rabbits
(2005-03-01)
The purpose of this study was to compare by qualitative histology the efficacy of rigid internal fixation with titanium system and the Lacto Sorb® system in mandibular fractures in rabbits. Thirty male adult rabbits ...
Estudo histomorfométrico da influência do diâmetro do orifício piloto na interface entre o implante e o osso vertebral
(Sociedade Brasileira de Ortopedia e Traumatologia, 2008-08-01)
OBJETIVO: Estudar as alterações agudas da interface entre os parafusos e o tecido ósseo vertebral, considerando o diâmetro do orifício-piloto em relação ao diâmetro interno do parafuso. MÉTODOS: O estudo foi realizado em ...
Tomographic, Histological, and Immunohistochemical Evidences on the Use of N-Butyl-2-Cyanoacrilate for Onlay Graft Fixation in Rabbits
(2012-12-01)
Background: The bone tissue responses to Cyanoacrylate have been described in the literature, but none used N-butyl-2-cyanoacrilate (NB-Cn) for bone graft fixation. Purpose: The aims of the study were: (a) to analyze the ...
Biomechanical in vitro evaluation of three stable internal fixation techniques used in sagittal osteotomy of the mandibular ramus: a study in sheep mandibles
(Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru, 2012-07-01)
Among the osteotomies performed in orthognathic surgery, the sagittal osteotomy of the mandibular ramus (SOMR) is the most common, allowing a great range of movements and stable internal fixation (SIF), therefore eliminating ...