Abstract: The apparatus prevents atomized fluid from being drawn back into the spray circuits of dental surgery instruments with separate air and water lines by virtue of incorporating a reservoir, installed on the air line at a point downstream of the relative control valve, the capacity of which is such as to ensure that air will continue to emerge from the instrument for a short duration after the control valve has closed.

Abstract: An improved appliance for use in applying filler material, such as gutta-percha or the like, to an endodontically prepared root canal of a tooth in the form of an elongated shaft of material having high biological tolerance, the shaft having a handle portion at the proximal end portion, the shaft distal end portion having a surface configuration adaptable to retain filler material formed thereon and being positionable in a root canal, the shaft distal and proximal portion being severable from each other whereby the distal portion and filler material therein remain in the root canal. In the preferred arrangement the shaft distal portion surface is defined by a spiral groove.

Abstract: A dental composite carrier and a packaging means for a composite used for posterior restorations in a tooth is provided. The composite carrier comprises a handle having a lever with a jaw on one end, and the package comprises individual incremental portions of composite material contained in ampules, and a number of ampules packaged in a tray. The composite carrier is used to pick an ampule out of the tray, carry it to a tooth, and deliver it into a cavity in the tooth. Optionally, the handle may have a condenser on its opposite end to be used for packing and smoothing the composite in the tooth.

Abstract: An oral drug retaining device includes a receptacle for receiving and holding a polymer matrix impregnated with a pharmacologic agent. The receptacle is formed by a cooperating basket and frame. The basket and frame include a hinge at one side and a latch pin at the opposite side to allow the receptacle to be selectively opened and closed to replace the polymer matrix as desired. Cooperating male and female connectors are provided to allow the receptacle to be releasably mounted to a tooth of a patient. One of these connectors is adapted for mounting to a tooth while the other is attached to the frame of the receptacle.

Abstract: A face bow for use with an articulator. The face bow has a caliper having ends to engage the ear area of a patient to support the articulator, a naison suture engaging means to engage the nose area of the patient and a fork to engage the teeth of a patient. Adjusting means to adjust the position of the naison indicator engaging means, the auditory meatus engaging means and the fork relative to each other. The face bow being adapted to be transferred to an articulator for use in adjusting dental models on the articulator.

Abstract: A nipple drinker for poultry or the like has a body constructed of thermoplastic acetal (e.g. DELRIN.RTM.) so as to minimize the amount of metal utilized while providing excellent longevity. The drinker includes a valve seat, valve pin, and ball all of metal, such as stainless steel. The head of the valve pin typically is essentially flat, in which case the height of the head is about 1.7 mm when the annular spacing between the circumferential periphery of the head and the valve seat is between about 0.07-0.08 mm. Each and every drinker is individually tested for the integrity of the valve seal, the integrity of an O ring seal, and to determine the amount of water it delivers. Accepted drinkers are classified according to the number of drops of water they will deliver per unit time in use based upon the testing.

Abstract: A device for mounting for mounting jaw casts in an articulator, has a spatially adjustable cast plate, an articulator base plate, and wedges that can be moved longitudinally and transversely. The wedges can be rotated axially, and fixation elements can be moved like a sled in the inclination of the wedges. The fixation elements can be locked in a predetermined position by screwing in the inclination of the wedges, with the cast plate being pressed against the wedges and fixed.

Abstract: An orthodontic apparatus for attachment to a tooth has a base portion, a base plate attached to the base portion and a plurality of layers of mesh material superimposed on the outer surface of the base plate and attached thereto. The apparatus is attachable to the surface of a tooth by applying an adhesive material to the plurality of layers of mesh material and bonding the mesh material directly to the surface of the tooth.

Abstract: An endodontic file comprises a flexible filing shaft having a filing portion extending along the length thereof from a first end, said filing portion having one or more elongated, bow-shaped bends therealong for being urged against a root canal for enlarging or shaping said canal.

Abstract: A dental mask (A) is disclosed for protecting the facial area of a dental patient during dental work. The mask includes a mask frame (B) and a protective sheet (C). Latex (24) is used for protective sheet (C) having a medial opening (36) which fits about cheek retractors (12, 14) of mask frame (B). Support arms (26, 28, 30, and 20) support protective sheet (C) in a generally taut condition when the cheek retractors are inserted and retract the cheeks to expose an oral cavity (22) of the patient during dental work. Protective sheet (C) protects the surrounding facial area of the oral cavity, is inclined to provide proper breathing through the nose, and shields the eye area (42) against airborne contaminant particles which are likewise prevented from being deposited on the facial area of the patient.

Abstract: A combination of a rotatable spindle and grinding disk, and a method of assembly thereof. The spindle has an end with radial slits. The grinding disk has a hub which rests on the end face of the spindle. A portion protruding from the end face of the spindle has a barrel shape or a double frustoconical shape periphery. The hub of the grinding disk has an opening through it of complementary shape to the periphery of the protruding of the spindle. The slit protruding portion is deformable for fitting into the hub opening, whereby the spindle and disk are fixed for rotation. Additional protrusions from the hub extending into the slits assure that the grinding disk does not rotate with respect to the spindle. The method includes disposing compressible material at both sides of the grinding disk or extending compressible material through the hole in the grinding disk, and then compressing the compressible material over the grinding disk the defining the hub for the grinding disk.

Abstract: A dental throat shield includes a U-shaped support member having a pair of legs interconnected by a bight portion. A shield member is bowed or arcuate and made of a shape retaining yet flexible material so as to conform to and cover the throat area. A plurality of openings are provided in the shield member to permit the patient to breathe.

Abstract: The apparatus carries suspended power driven dental surgery instruments, and features a system whereby each arm carrying a relative instrument is split into at least two members, hinged one to the other and provided with travel limiters and a return spring mechanism, such that when the power cable of the instrument is tugged by the user, the arm will rotate by stages, with the member farthest from the table shifting before the member to which it is hinged.

Abstract: A leash for a pet, comprising a series of closely spaced electric lights which are disposed longitudinally in a central axial passage in a hollow, flexible transparent tube. The tube is provided with thinner longitudinal strengthening ribs or flanges along opposite sides of the center portion in which the lights are housed, and has an integral hand loop at one end and an integral choker collar at the other.

Abstract: This invention relates to a leash which coils up automatically when the handle is released. The invention comprises a generally cylindrical center portion with handles on either side, which is manufactured in two parts and can be assembled easily. The two parts are then sonically sealed to provide a strong and secure body. A retractable spring is fixedly attached inside the body in such a manner that it easily pulls out and retracts without catching or snagging.

Abstract: A head restraint for animals such as sheep, comprising a support carrying arms for engaging the bridge of the snout and the lower jaw to clamp the jaws in a closed position, arms carried by the support, the arms carrying caps which in use cover the eye of the animal, each cap having a lug which engages a cavity in the skull of the sheep just behind each eye socket.

Abstract: A system of orthodontic appliances and method for their use for gaining space in a dental arch without extraction. Space is gained in the maxillary arch primarily through a transpalatal bar, transmitting force to selected teeth through a maxillary lingual sheath, the receiving portion of the sheath having a mesial offset of about eight degrees. Additional space in the maxillary arch may be gained by employing an extraoral force appliance, transmitting force through a maxillary bucal tube carried on a selected pair of maxillary molars. The mandibular arch is treated by applying similar forces to selected molars through a lip bumper. This appliance transmits force through a mandibular buccal tube that receives the bumper in a passage having a mesial offset of about five degrees. The mandibular buccal tube also carries an archwire receiving passage, distally offset by about four degrees.

Abstract: The module for an apparatus (system) to produce upper and lower jaw full prostheses has an instrument holder (66) consisting of a baseplate (3), supporting two upright pillars (4) and a tilting arm (6) that can be pivoted on a horizontal axis (5) around the pillars (4), on which auxiliary instruments developed for individual work processes can be adapted.In terms of auxiliary instruments, the module has an infinitely adjustable levelling table (9) set on the baseplate (3), a lower jaw alignment key (10), an impression or mounting plate (7, 8), an upper jaw model alignment key, a domed setting aid for correct setting of teeth on the lower jaw full prosthesis and a domed setting aid with dummy tooth for correct setting of the 1st right and left tooth on lower jaw full prostheses, which can be attached to the instrument holder (66) in a secure position and interchanged.

Abstract: A self-contained disposable animal commode is disclosed having a container with an access opening formed therein. The container includes a base portion defining a box-like receptacle having an open top and a cover portion cooperating with the base portion to define a substantially entirely enclosed space. The base portion of the container is adapted to support an animal for defecation and urination into a loose material and the cover portion of the container is movable from a collapsed position substantially conforming to the base portion to an expanded position. The container thus defines a substantially entirely enclosed space which can be collapsed for shipping and expanded for use. Additionally, the expanded position causes the cover portion to be positioned to comfortably receive the animal with the access opening positioned for ingress and egress of the animal therethrough.

Abstract: A disposable kitty litter box and bag assembly in which the box with litter is inside the bag. The bag wall is long enough be gathered together at the top and tied shut with the box and used kitty litter closed inside. The entire assembly is then disposed of together as a unit. The part of the bag wall which extends upwardly beyond the wall of the box inside is doubled back in folds and held in place by a band or other releasable retaining device until the litter has been used and the entire assembly is ready for disposal. At such time, the band is removed or separated to allow the folds of the bag wall to be unfolded and lifted above the box and litter for closing and tying shut.