摘要:
An integral, one-piece silanated particle impregnated gutta percha core/cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core/cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core/cone, without the need for a separate carrier core to install the tapered gutta percha core/cone within the root canal. Additionally, the tapered body of the core/cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core/cone. Additionally, the head of the core/cone can be gripped by a delivery vehicle clasp.
摘要:
An integral, one-piece silanated particle impregnated gutta percha core/cone technique employs a thin layer of a luting agent, such as glass ionomer cement with a machined gutta percha core/cone, precisely matches the preparation, thereby reducing leakage and achieving a hermetic seal. The hermetic seal is further enhanced by a mono-block bond that occurs between the silanated particles in the gutta percha and the appropriate chemical sealant. Optional cryogenic treatment of the gutta percha material changes its molecular weight, making it stiffer and conducive to forming an integral, one piece core/cone, without the need for a separate carrier core to install the tapered gutta percha core/cone within the root canal. Additionally, the tapered body of the core/cone may be reticulated in a slightly three dimensional texturized framework to increase surface area and therefore increase retention. Optional line demarcation indicia are also placed on the core/cone. Additionally, the head of the core/cone can be gripped by a delivery vehicle clasp.
摘要:
The invention relates to a high-temperature stable, one-part, aqueous tooth bleaching composition for contacting a tooth surface. The composition comprises a bleaching agent comprising a high level of a aqueous hydrogen peroxide. The bleaching agent is derived from multiple components within the composition and comprises at least about 15% by weight of the total composition weight. The composition also comprises a bleaching agent stabilizer comprising from about 0.01% to about 1.00% by weight of the total composition weight.
摘要:
Embodiments of the present invention are directed to apparatus and methods for establishing standards for visual residue limits, training individuals to visually observe and recognize surfaces exceeding or complying with residue limits, and certifying individuals for such detection limits The invention features a kit comprising an assembly of coupons with predetermined loads.
摘要:
A dental material using nano material that will serve as reinforcement and will enhance mechanical properties with minimal sacrifice in other properties including processability of a dental material. The dental material may be used as a filling, restorative, cement, liner, adhesive or primer. This is achieved by combining several polymerizable monomers and/or oligomers, a polymerization initiator, at least one hyperbranched additive and at least one of an electrospun nanofiber, an electrospun nanosphere or a hyperbranched macromolecule. The hyperbranched additive may be hyperbranched molecules, dendridic molecules (such as dendrimers). In a preferred embodiment a caged silica (such as POSS) is used for a caged macromolecule. The material may also include nanoclay or traditional composite fillers. The material may optionally include accelerators (such as DEHPT), cross linkers or pigment