Abstract Titanium (Ti) and its alloys are widely used as dental implant materials because of their high mechanical properties, biocompatibility, corrosion resistance. This research was undertaken to study the effect polymethyl-methacrylate (PMMA) sealing layer on performance plasma electrolytic oxidation (PEO)-coated titanium-based implants in pure saliva fluoride-containing solutions. The phas...

Treatment of bone metastases usually includes surgical resection with local filling of methotrexate (MTX) in polymethyl methacrylate (PMMA) cement. We investigated whether incorporating carboxymethyl chitosan (CMCS) in MTX-PMMA cement might overcome disadvantages associated with MTX. To determine the optimal CMCS+MTX concentration to suppress the viability of cancer cells, an integrated microfl...

The special photochromic mechanism of spiro-oxazine (SO) refers to low thermostability and weak fatigue resistance. High light transmittance biocompatibility are the two advantages polymethyl methacrylate (PMMA), but it does not perform well in terms tensile strength. Here, a new type SO (1-(4'methacryloyloxybutyl)- 3,3-dimethyl-9'-hydroxy- 3H-spiro-naphthyl oxazine) was synthesized introduced ...

Chitosan is known for its hemostatic and antimicrobial properties and might be useful for temporary coating of removable dentures or intraoral splints to control bleeding after oral surgery or as a supportive treatment in denture stomatitis. This study investigated a new method to adhere chitosan to polymethyl methacrylate (PMMA) and polyethylene terephthalate (PET). There were 70 cylindrical s...

Total nasal reconstruction is a challenging multistage procedure. Infections can destroy the cartilage framework and seriously compromise the result. The use of polymethyl methacrylate with antibiotics as a spacer has been described in the treatment of skeletal infections. Using this same principle, the use of a polymethyl methacrylate with antibiotics spacer for an infected nasal reconstructio...

Polymethyl methacrylate (PMMA)-based bone cement (BC) is a key material in joint replacement surgery that transfers external forces from the implant to while allowing their robust binding. To quantitatively evaluate effect of polymerization on thermomechanical properties BC and interaction characteristics with ceramic hydroxyapatite (HAp), molecular dynamics simulations were performed. The mech...

Polymethyl methacrylate (PMMA), commonly known as bone cement, is widely used in orthopaedic surgery, mainly for prosthesis fixation, stabilizing compressive vertebral fracture or filling defects. Bone cement a potentially new repair material that has been investigated recently dentistry because of its properties like low cytotoxicity, excellent biocompatibility and resistance to moist environm...

background: the purpose of this project was to derive the brachytherapy dosimetric functions described by american association of physicists in medicine (aapm) tg-43 u1 based on high dose rate 192i sources. materials and methods: the method utilized included both simulation of the designed polymethyl methacrylate (pmma) phantom using the monte carlo of mcnp4c and benchmarking of the simulation ...

Abstract The effects of hydrostatic pressure on the defective random one dimensional photonic crystals (1DPC) were investigated for two cases polymeric materials. polymers, Polystyrene (PS), and Polymethyl methacrylate (PMMA) act as defect layer. Where structure is modeled with a combination silicon silica. transmission spectra multilayer structures under are analyzed using transfer matrix meth...

The thermodynamics of a solid are crucial in predicting thermal responses and fire behaviors, they commonly determined by inverse modeling optimization algorithms at constant heat flux. However, practical scenarios, the imposed flux frequently varies with time, related determination methods rarely reported. In this study, particle swarm (PSO) algorithm 1D numerical model were utilized to determ...