Abstract: Horse hoof protection is obtained by incorporating a synthetic organic resin such as a urethane resin in the volume defined by the horse hoof bottom wall, suitably covered with a web fixed to the hoof bottom wall that is adhered to the resin. The resin protection is suitably free flowing into place, conforms to the contours of the hoof bottom wall, and adheres to the wall when cured. The protection by the resin is resilient and softer than the hoof wall and acts to cushion the hoof against shock.

Abstract: Horse hoof protection is obtained by incorporating a synthetic organic resin such as a urethane resin in the volume defined by the horse hoof bottom wall, suitably covered with a web fixed to the hoof bottom wall that is adhered to said resin. The resin protection is suitably free flowing into place, conforms to the contours of the hoof bottom wall, and adheres to the wall when cured. The protection by the resin is resilient and softer than the hoof wall and acts to cushion the hoof against shock.

Abstract: Horse hoof protection is obtained by incorporating a synthetic organic resin such as a urethane resin in the volume defined by the horse hoof bottom wall, suitably covered with a web fixed to the hoof bottom wall that is adhered to said resin. The resin protection is suitably free flowing into place, conforms to the contours of the hoof bottom wall, and adheres to the wall when cured. The protection by the resin is resilient and softer than the hoof wall and acts to cushion the hoof against shock.

Abstract: Method and apparatus for the packaging of single use quantities of product such as dental retraction cords comprising sheet materials laminated about the product interposed between the sheet materials in a continuous length and severed at the locus of transverse lamination to a single use quantity length.

Abstract: A measuring vial for automatically determining correct number of fluid aliquots to be mixed with other materials such as dental alginate impression powders comprises a cylinder having an extended recess, an outlet port in the recess, the outlet port being at the height of the meniscus height of the desired quantity of fluid, any excess fluid being lost through the outlet port until the correct quantity is determined. A finger in the recess over the outlet blocks loss of fluid where desired.

Abstract: A cassette for retaining medical, dental and veterinary instruments during fluid-carried ultrasonic vibration cleaning comprising generally rectangular, registered top and bottom interiorly open solid frames formed of synthetic organic plastic material having a tendency to dampen ultrasonic vibrations and molded to define interior instrument supports and resistant to cleaning conditions and defining a recess sized to receive the instruments, a series of separately formed and movable instrument support brackets, a series of support bracket mounts within the cavity integrally formed with the frames in opposed registration for mounting the support brackets in instrument receiving relation; a hinge linking like ends of the top and bottom frames for hinged pivoted movement opening and closing the cassette to receive and disgorge the instruments, the hinge comprising on each of the top and bottom frames a hinge pin and flange arrangement and an elongated link having an intermediate extent and terminal portions jour

Abstract: For infection control in a dental operatory, a single use, disposable dental bib holder comprising a synthetic organic plastic strap of a length to go about the neck of a patient and having left and right terminals, left and right clip fasteners secured to the strap terminals and having interlocking portions for positively fastening a dental bib in use position, the strap being locally frangible between the terminals for manually separating the strap into two sections which are disposable with the dental bib.

Abstract: Method, composition and structure are provided for tooth restorations comprising a urethane polymer having a crystalline polymer phase distributed in a noncrystalline polymer phase by virtue of differential reactivity of the urethane forming reagents.

Abstract: Method, composition and structure are provided for tooth restorations comprising a urethane polymer having a crystalline polymer phase distributed in a noncrystalline polymer phase by virtue of differential reactivity of the urethane forming reagents.

Abstract: A sealed dispensing cup is prepared by forming a portion of a plastic sheet into a cup, adding dispensable material to the cup, placing a sealable closure over the open end of the cup and marginally beyond the periphery of the open end to provide an overlap area that includes a lateral rim section, sealing the closure to the lateral rim section, excising the lateral rim section, with its subtending cup, from the plastic sheet in a configuration that includes an elongated handle portion extending outwardly from the rim, and shaping the elongated handle portion into the form of a finger mount.

Abstract: A combination working tray and sterilization case is provided for medical instruments, wherein first and second ventilated shell halves are pivotally connected to each other for movement between open and closed positions, thereby forming a tray in the open position and a sterilization case in the closed position. A spring is provided in each of the first and second shell halves in order to hold medical instruments between adjacent convolutions of each spring.

Abstract: A dental paste cup is provided which comprises a cup having an open mouth defined by a rim, a removable closure overlying the open mouth and engaging the rim, and a finger mount extending adjacently and circumferentially from the rim, in a ring-like manner, and terminating in an open end proximate to the rim to thereby provide a slide-resistant grip on a support finger. In one embodiment, the end segment, which is releasably attached to the outer rim of the cup, passes through an aperture in the finger mount into alignment with an outer extension of the closure, which is releasably secured to the inner rim of the cup. The application of a vertical squeezing force to the finger mount disengages the end segment from the rim and permits the end segment to bear against the outer extension of the closure and thereby effect displacement of the closure from the mouth of the cup.

Abstract: A dental impression composition is provided which has relatively lower water content for higher tensile and gel strengths, and an effective amount of dipopylene gylcol to offset the reduced amount of water and provide workability in the composition at storage tempering temperatures of as little as 130.degree. F.

Abstract: A dental paste cup is provided which comprises a cup having an open mouth defined by a rim, a removable closure overlying the open mouth and engaging the rim, and a finger mount extending adjacently and circumferentially from the rim, in a ring-like manner, and terminating in an open end proximate to the rim to thereby provide a slide-resistant grip on a support finger. In a preferred embodiment, the closure is releasably secured to the inner rim of the cup and the open end segment of the finger mount, which is releasably attached to the outer rim of the cup, passes through an aperture in the finger mount into alignment with an outer extension of the closure. The application of a vertical squeezing force to the finger mount disengages the end segment from the rim and permits the end segment to bear against the outer extension of the closure and thereby effect displacement of the closure form the mouth of the cup.

Abstract: A dental impression composition is provided which has high tensile and gel strengths, but an absence of graininess through the use of zinc borate and a water soluble alkylene glycol in the composition.

Abstract: An astringent retraction cord for use in dental therapeutics is provided by coating a gingival retraction cord with an astringent gel containing an astringent salt such as aluminum potassium sulfate and a bodying agent sufficient to stiffen the salt solution to stand on the cord. The gel coated retraction cord is adapted to be inserted into the gingival sulcus to effect retraction of gingival tissue.