Recently we have developed 4 channel incubation type planar patch clamp biosensor with polymethylmethacrylate (PMMA) substrate by using both-side hot embossing, focused ion beam micro-fabrication and surface modification by extra cellular matrix. We have evaluated the performance by using the light-gated ion-channel protein, channelrhodopsin wide receiver (ChRWR) expressed on HEK293 cell. Obser...

PURPOSE To perform a quantitative evaluation of smoothness of ablation on polymethylmethacrylate (PMMA) using four scanning excimer lasers available commercially for photorefractive surgery. METHODS Ablations were done on PMMA plates with dimensions 100 x 50 x 1 mm. Four scanning excimer lasers were used, two with flying spot technology (Zeiss-Meditec MEL-70, and a Russian-made unit, Microsca...

BACKGROUND The purpose of the present study was to compare the results of various types of anchor applications with or without augmentation in both osteopenic and severely osteoporotic bone models. METHODS Two different types of suture anchors were tested in severely osteoporotic (SOP) and osteopenic polyurethane (PU) foam blocks using an established protocol. An Instron machine applied stati...

BACKGROUND A novel soft tissue filler composed of polymethylmethacrylate (PMMA) microspheres suspended in a collagen gel matrix containing 0.3% lidocaine (ArteFill, Artes Medical, Inc.) was recently approved by the Food and Drug Administration for the correction of nasolabial folds. A randomized, multicenter, controlled pivotal trial performed in the United States established the safety and eff...

Polymethylmethacrylate (PMMA) is currently the most commonly-used material, but it may induce adjacent vertebral fracture due to low degradation and high strength. Our study evaluated the feasibility of injectable calcium phosphate cement (ICPC) and fibrin sealant (FS) as an injectable compound carrier of human bone morphogenetic protein-2 (rhBMP-2) in New Zealand rabbits for vertebroplasty. Re...

Orbital conjunctival epithelial cysts have traditionally been excised, with the risk of leaving behind remnants that may result in recurrences. We present an 18-year-old male who complained a poorly retained prosthesis three years after primary evisceration and polymethylmethacrylate (PMMA) ball implant. performed cyst aspiration injection foam sclerotherapy for cyst, which resolved completely ...

Previous studies using gram-positive and -negative bacteria demonstrated that hydrolysis of silicon nitride (Si3N4) in aqueous suspensions elutes nitrogen produces gaseous ammonia while buffering pH. According to immunochemistry assays, fluorescence imaging, situ Raman spectroscopy, we demonstrate here the antipathogenic surface chemistry Si3N4 can be extended polymethylmethacrylate (PMMA) by c...

In this letter we report experimental observations on the times of adhesion of living Tokay geckos (Gekko geckos) on polymethylmethacrylate (PMMA) inverted surfaces. Two different geckos (male and female) and three surfaces with different root mean square (RMS) roughness (RMS=42, 618 and 931 nm) have been considered, for a total of 72 observations. The measured data are proved to be statistical...

Description of Procedure or Service Percutaneous Vertebroplasty Percutaneous vertebroplasty (PVP) is an interventional radiology technique involving the fluoroscopically guided injection of polymethylmethacrylate (PMMA) through a needle inserted into a weakened vertebral body. The technique has been investigated as an option to provide mechanical support and symptomatic relief in patients with ...

Inflammatory or degenerative processes in glenohumeral joint lead to pain and restriction of movements of the shoulder. Prosthetic replacement of the glenohumeral joint has gained in popularity because of its efficacy in relieving pain. The pioneering successful prostheses for total shoulder arthroplasty (TSA) have been based on an unconstrained de‐ sign, i.e. a metal spherical head component f...