2010

Glass ionomer cement (GIC) has been successfully used in dental field for more than 40 years. Despite numerous advantages of GIC, low bond strength and slow setting rate limited conventional GICs for use only at low stress-bearing areas. To improve bond strength to tooth, two kinds of cyanoacrylates such as ethyl 2-cyanoacrylate (EC) and allyl 2-cyanoacrylate (AC) were added in a commercial GIC. Changes in setting time of cyanoacrylate-modified GICs (CMGICs) according to the concentration of cyanoacrylates and/or p-toluene sulfonic acid (TSA) was investigated using a rheometer.

Liquid hemostatic coating materials comprise a cyanoacrylate monomer and a solvent system comprising a volatile, non-reactive liquid that is non-stinging and non-irritating to a user. The material forms a coating or bandage in the form of a film that when applied and adhered to a surface or to the skin of a user inhibits the application surface from adhering to another surface.

Nowadays, solvent-free, one-part cyanoacrylate adhesive is widely used in medicine and dentistry. According to a literature survey done by the authors, there are few papers concentrated on the role of nano-sized particles on the thermal behavior of cyanoacrylate glue. Thus the main goal of the current research focused on clarifying the role of nano-sized SiO2 on the thermal behavior of cyanoacrylate. Thermal behavior of all materials including cyanoacrylate and its nanocomposites was studied by using Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) methods.

Disclosed are compositions and methods for the biocompatible sterilization of materials, in particular, of medical devices and implants. Sterilization is achieved by deactivation of microorganisms through treatment of the material with a mixture of at least one microbiocidal additive and a high-pressure or supercritical fluid, for example, high-pressure carbon dioxide or supercritical carbon dioxide. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

A method is disclosed that produces allografts from matrices typically containing demineralized bone matrix (DBM) powder, demineralized bone matrix gel, demineralized bone matrix paste, bone cement, cancellous bone, or cortical bone and mixtures thereof. The matrices are sterilized utilizing supercritical CO2 in the presence of a sterilizing additive and an entrainer such as an alkaline earth metal compound, preferably CaCO3.

Flame retardant compositions are disclosed which comprise (a) at least one particulate material which expands on the application of heat and (b) at least one particulate nano-filler, together with at least one polymer and/or at least one curable monomer or oligomer. The compositions may also contain certain silicon-based materials. Flame-retardant compositions comprising polyorganosiloxanes containing one or more functional groups selected from amino, hydroxyl, methacrylic, acrylic and epoxy groups, are also disclosed.

The invention relates to methods of using compositions for forming microbial sealant drapes. In particular, the invention relates to the use of compositions of combinations of cyanoacrylates for the in situ formation of drapes that can be used in surgery to protect patients from surgical site infections.

During the resorbable-polymer-boom of the 1970s and 1980s, polycaprolactone (PCL) was used extensively in the biomaterials field and a number of drug-delivery devices. Its pop- ularity was soon superseded by faster resorbable polymers which had fewer perceived disadvantages associated with long-term degradation (up to 3–4 years) and intracellular resorption pathways; consequently, PCL was almost forgotten for most of two decades. Recently, a resurgence of interest has propelled PCL back into the biomaterials-arena.