We aimed to compare in vivo the stability of fixation of condylar fractures in sheep using sonic bone welding and standard titanium screws. We assessed stability of the osteosynthesis and maintenance of the height of the mandibular ramus. Height decreased slightly in both groups compared with the opposite side. The volume of the condyle increased considerably in both groups mainly because callus had formed. The results showed no significant disadvantages for pin fixation compared with osteosynthesis using titanium screws.
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http://dx.doi.org/10.1016/j.bjoms.2012.07.015 | DOI Listing |
Front Bioeng Biotechnol
January 2025
Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Background: Currently, some novel rods with lower elastic modulus have the potential as alternatives to traditional titanium alloy rods in lumbar fusion. However, how the elastic modulus of the rod (rod-E) influences the biomechanical performance of lumbar interbody fusion remains unclear. This study aimed to explore the quantitative relationships between rod-E and the biomechanical performance of transforaminal lumbar interbody fusion (TLIF).
View Article and Find Full Text PDFHua Xi Kou Qiang Yi Xue Za Zhi
February 2025
Dept. of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu 233004, China.
Objectives: This study aims to analyze the biomechanics of three kinds of rigid internal fixation methods for condylar head fractures.
Methods: A three dimensional finite element model of the normal mandible was constructed. It was then used to prepare condylar head fracture finite element model and three kinds of rigid internal fixation finite element model (unilateral tension screw, bilateral tension screw, tension screw+titanium plate).
J Biomech
January 2025
School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025 PR China.
Researchers have modified PLA materials to enhance their mechanical properties and meet the clinical requirements. However, the strength and stiffness of PLA are still significantly lower than those of metals. Building on the established chevron clinical procedure and considering the mechanical characteristics of PLA screws, we devised a modified chevron osteotomy (MCO) based on a load-reducing structure with the aim of reducing the load on the screws.
View Article and Find Full Text PDFNatl J Maxillofac Surg
November 2024
Fellow of International Association of Oral and Maxillofacial Surgeons, Chicago, USA.
Purpose: This study was conducted to check the efficacy of PUNPLAPOT-innovative Template for positioning of the bone miniplate for fracture fixation.
Material And Methods: Twenty dried mandible specimens were used in this study. The specimens were then divided into two groups using random sampling.
J Mech Behav Biomed Mater
January 2025
Center of Stomatological, The Second Hospital, Cheeloo College of Medicine, Shandong University, 250033, PR China; Jinan Key Laboratory of Oral Materials, Jinan, 250033, PR China. Electronic address:
A method is proposed for 3D printing and enhancing the surface bioactivity of zirconia ceramic anchor screws, specifically tailored for temporomandibular joint disc reduction surgery. Initially, the challenge posed by the brittleness and processing difficulties of fine ceramic anchor screws was addressed through the application of SLA-3D printing technology. This allowed for an exploration of the forming accuracy and biomechanical properties of the printed anchor screws.
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