Purpose: To evaluate the feasibility of double-root implantation with the aid of template.
Methods: Implant templates were fabricated based on CT data from the tibia of 12 rabbits. 12 double-root implants were placed in the tibia of rabbits under the guidance of implant templates, and single-root implants were placed in contralateral tibia of the same rabbits. Rabbits were sacrificed at 8 and 12 weeks. Implant mobility was checked directly. Specimens were examined by X-ray to measure bone gray value using Image Pro-Plus6.0 software. Super-rigidity slices were prepared to test bone-implant contact ratio using Image Pro-Plus6.0 software. The data were analyzed with SPSS20.0 software package.
Results: The surgical procedures were completed successfully. There was no obvious loosening of implants. No significant difference was found between the experimental and control groups in bone gray value and bone-implant contact ratio at different time(P>0.05).
Conclusions: The implanting method of double-roots implant with the aid of template is feasible, and osteointegration is ideal.
Download full-text PDF |
Source |
---|
J Orthop Res
January 2025
Department of Orthopaedic Surgery, Montefiore Einstein, Bronx, New York, USA.
Compression neuropathy is a prevalent medical condition, including common types such as carpal tunnel syndrome, cubital tunnel syndrome, sciatica, and many others. While the neurological consequences are well understood, the effects on bone properties and the potential downstream impact on fracture risk remain less clear. This study aimed to assess the influence of compressive neuropathy on bone properties using a rabbit model of sciatic nerve compression.
View Article and Find Full Text PDFJ Orthop Sci
January 2025
Cell Therapy and Experimental Surgery of Musculoskeletal System LR18SP11 Lab, Faculty of Medicine, Sfax, Tunisia; Department of Orthopedics and Traumatology, CHU Habib Bourguiba, Sfax, Tunisia.
Objective: This study aimed to assess the effect of implantation of fresh human amniotic membranes (HAM) on bone consolidation during distraction bone lengthening.
Methods: Ten New Zealand white rabbits were used in this study. For each rabbit, we performed a diaphyseal tibial osteotomy after installing a single-plane distraction external fixator.
J Mech Behav Biomed Mater
January 2025
Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Mechanical and Manufacturing Engineering, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada; Department of Biomedical Engineering, Schulich School of Engineering, University of Calgary, Calgary, Alberta, Canada.
The rabbit is a popular experimental model in orthopaedic biomechanics due to the presence of natural Haversian remodeling, allowing for better translational relevance to the mechanobiology of human bone over traditional rodent models. Although rabbits are often used with computational modeling approaches such as the finite element (FE) method, a validated and widely agreed upon density-elasticity relationship, which is required to make subject-specific predictions, does not exist. Therefore, the purpose of this study was to determine and validate an accurate density-elasticity relationship for rabbit hindlimb bones using mathematical optimization.
View Article and Find Full Text PDFJ Craniofac Surg
December 2024
Department of Oral and Maxillofacial Surgery, College of Dentistry, King Saud University.
Objectives: This study aimed to evaluate the osseointegration properties of titanium bone implants coated with carob-mediated calcium hydroxide nanoparticles biomechanically, radiographically, and histologically on rabbit tibias.
Material And Methods: Forty coated and forty uncoated titanium alloy bone implants were inserted into 20 New Zealand rabbits; each tibia received 2 implants. The rabbits were sacrificed after 4 or 8 weeks, and samples were retrieved for biomechanical evaluation through removal torque test to assess the bond between implant and bone, radiographic evaluation through microcomputed tomography analysis to compare the bone-to-implant contact percentage and bone volume of the peri-implant area, scanning electron microscopic and histologic evaluation through hematoxylin and eosin stain.
Braz Oral Res
December 2024
Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Periodontology and Implantology, Uberlândia, MG, Brazil.
The purpose of this study was to evaluate the effect of a single dose of ionizing radiation (30 Gy) on the osseointegration of implants in the rabbit tibia. Twenty rabbits received two dental Morse-tapered junction implants and one implant in each tibia. The animals were randomly divided into two groups (n=10), non-irradiated (NoIr) and irradiated (Ir), wherein the Ir group received a single dose of 30 Gy radiation 2 weeks after implant installation.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!