摘要:
The present invention discloses a cone material in endodontic treatment. The cone material comprises a thermoplastic polyurethane and a filler. The thermoplastic polyurethane is formed by a. isophorone diisocyanate (IPDI) or hexamethylene diisocyanate (HDI), b. poly(butyleneadipate) glycol (PBA) and c. chain extender, wherein the molar ratio of PBA and the diisocyanate is equal to or more than 0.8. By changing the molar composition of the components such as polyol and diisocyanate, physical and chemical property of the disclosed cone material in endodontic treatment can be adjusted.
摘要:
The present invention discloses a Polyurethane (PU) composite material comprising a thermoplastic polyurethane and a filler. The thermoplastic polyurethane comprises a linear polyurethane main-chain, and the polyurethane main-chain comprises a soft segment and a hard segment. The hard segment of the polyurethane main-chain is formed by a diisocyanate and a chain extender, and the soft segment of the polyurethane main-chain is formed by a polyol. The present invention also teaches the application of the disclosed thermoplastic polyurethane composite material in dental root canal material.
摘要:
The present invention discloses an endodontic sealer which comprises a urethane-monoacrylate oligomer, a diluting monomer, at least one photo-initiator, at least one thermal-initiator, and a filler, wherein the urethane-monoacrylate oligomer is obtained by firstly reacting the acrylate with the diisocyanate to form an intermediate with only one isocyanate group, and then reacting the intermediate with the polyol to form the desired urethane-monoacrylate oligomer.
摘要:
The present invention discloses a cone material in endodontic treatment. The cone material comprises a thermoplastic polyurethane and a filler. The thermoplastic polyurethane is formed by a. isophorone diisocyanate (IPDI) or hexamethylene diisocyanate (HDI), b. poly(butyleneadipate) glycol (PBA) and c. chain extender, wherein the molar ratio of PBA and the diisocyanate is equal to or more than 0.8. By changing the molar composition of the components such as polyol and diisocyanate, physical and chemical property of the disclosed cone material in endodontic treatment can be adjusted.
摘要:
The present invention discloses an endodontic sealer which comprises a urethane-monoacrylate oligomer, a diluting monomer, at least one photo-initiator, at least one thermal-initiator, and a filler, wherein the urethane-monoacrylate oligomer is obtained by firstly reacting the acrylate with the diisocyanate to form an intermediate with only one isocyanate group, and then reacting the intermediate with the polyol to form the desired urethane-monoacrylate oligomer.
摘要:
The present invention discloses an endodontic sealer which comprises a urethane-acrylate oligomer, a diluting monomer, at least one photo-initiator, at least one thermal-initiator, and a filler, wherein the urethane-acrylate oligomer is obtained by firstly reacting the acrylate with the diisocyanate to form an intermediate with only one isocyanate group, and then reacting the intermediate with the polyol to form the desired urethane-acrylate oligomer.
摘要:
The present invention is directed to compositions and methods of using compositions comprising a scaffold with growth factors chemically immobilized thereto for inducing chondrogenesis and/or osteogenesis when implanted in vivo or osteogenesis or chondrogenesis in cultures in vitro. The compositions and methods enhance bone and cartilage growth. Also described are compositions and methods for targeted drug delivery.
摘要:
A non-alcohol mouthwash composition without chemical antibacterial medicament is disclosed. The non-alcohol mouthwash composition includes from 0.03% to 1.5% of γ-polyglutamic acid (γ-PGA) and from 0.5% to 4% of surfactant, all percentages based on the total weight of the mouthwash composition. The non-alcohol mouthwash composition preferably includes from 0.4% to 1.5% by weight, or more preferably from 0.8% to 1.3% by weight, of γ-PGA. Containing no chemical antibacterial medicament, the non-alcohol mouthwash composition can effectively inhibit bacterial growth in the oral cavity without irritating the oral mucosa.
摘要:
The present invention discloses fluoride-releasing strips for caries prevention, wherein the fluoride-releasing strips comprises a colloidal fluoride-containing solution for releasing fluorine ion and a support substrate. A colloidal fluoride-containing solution comprises a fluoride solution, at least one buffer, at least one moisturizer and a carboxymethyl cellulose (CMC). The concentration of fluoride ions in said colloidal fluoride-containing solution ranges from 2500 ppm to ppm. The support substrate is waterproof material and the colloidal fluoride-containing solution is applied on the support substrate.
摘要:
A dynamic time sequence control device and its method for a word matching circuit. The word matching circuit includes a first switch connected between an input voltage and a node to respond to a control signal generated by a pre-charging circuit so that within a pre-charging phase period a current is generated to flow through a capacitor to generate a charging voltage. The node is connected to multiple data memories and matching circuits so that the matching result can be outputted through the node. The dynamic time sequence control device includes a second switch connected between the first switch and the node. A third switch is connected between the data memory and matching circuit and a self time sequence controller has a threshold value to respond to the control signal and to conduct the second switch and turn off the third switch during the pre-charging phase period, meanwhile, it turns off the second switch and conducts the third switch when the charging voltage is detected to be larger than threshold value. The self time sequence controller detects the output voltage of the node and outputs the data matching result during a value-acquisition phase period.