: to address the issue of burst drug release in antibiotic-loaded poly(methyl methacrylate) (PMMA) bone cement (ALBC), this study involved preparation of novel PMMA bone cement and determination of its antibacterial activity, biocompatibility, compressive properties, maximum temperature, and setting time. : a novel acrylic monomer, which contains the 3,4-dichloro-5-hydroxyfuran-2(5)-one (DHF), was synthesized and utilized to develop non-leaching antibacterial PMMA bone cement (NLBC), designated as DHF-methacrylic acid (DHF-MAA) bone cement. In the preparation of this bone cement, DHF-MAA served as a key component of the liquid phase. Its antibacterial activity was determined using a surface antibacterial assay. The biocompatibility of the cement was evaluated through a rabbit-suspended erythrocyte hemolysis test, assessment of the relative proliferation rate of mouse embryonic osteoblast precursor cells (MC3T3-E1) using the CCK-8 method, and an acute toxicity test in mice. The assessment of compressive properties includes both compressive strength and compressive modulus before and after aging. : DHF-MAA bone cement exhibited antibacterial activity, excellent biocompatibility, and acceptable compressive properties; in particular, the 10% DHF-MAA bone cement, achieved 100% antibacterial activity, excellent biocompatibility, and a compressive strength that met the compressive value, as stated in ISO 5833. : in this study, novel antibacterial non-leaching DHF-MAA bone cement was synthesized and evaluated for its antibacterial activity, biocompatibility, and compressive properties. In particular, the 10% DHF-MAA bone cement exhibited excellent antibacterial activity, biocompatibility, and acceptable compressive properties. As such, this cement formulation warrants further characterization with a view to using it to anchor cemented arthroplasties.
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http://dx.doi.org/10.1039/d4ra06607c | DOI Listing |
F1000Res
January 2025
Department of Orthopaedics, Leiden University Medical Center, Leiden, Albinusdreef 2, 2333 ZA, The Netherlands.
Background: Prosthetic joint infection is a serious complication that can arise after total joint replacement surgery. When bacteria colonise an orthopaedic implant, they form biofilms that protect them from their environment, making them difficult to remove. Treatment is further complicated by a global rise of antimicrobial resistance.
View Article and Find Full Text PDFBone
January 2025
ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
Osteoporosis is the most common bone metabolic unbalance, leading to fragility fractures, which are known to be associated with structural changes in the bone. Cortical bone accounts for 80 % of the skeleton mass and undergoes remodeling throughout life, leading to changes in its thickness and microstructure. Although many studies quantified the different cortical bone structures using CT techniques (3D), they are often realised on a small number of samples.
View Article and Find Full Text PDFWest Afr J Med
September 2024
.Department of Preventive Dentistry, Lagos State University, College of Medicine, Faculty of Dentistry, Ikeja, Lagos, PMB 21266, Nigeria.
Background: Indirect pulp capping is the main treatment modality for reversible pulpitis.
Objective: To evaluate the efficacy of Biodentine® and Calcium hydroxide in the formation of dentin bridge.
Materials And Methods: A double blinded, randomized clinical control trial involving 50 consenting subjects, aged 16 to 55 years with deep carious vital teeth.
Beijing Da Xue Xue Bao Yi Xue Ban
February 2025
First Clinical Division, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Enginee-ring Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China.
Objective: To clarify the role of concentrated growth factors (CGF) in the treatment of periodontal cement defects using calcium phosphate cement (CPC) with self-curing properties.
Methods: Thirty-six intrabony defects were randomly divided into two groups. The experimental group received CGF+CPC treatment (=18), while the control group received CPC treatment alone (=18).
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