Abstract: Implants for dental use having, in addition to a high mechanical strength, also a high dielectricity providing a high resistance to electrochemical and chemical attack. A rigid implantation for dental uses comprises a metal core totally covered with a firmly adhering layer of tetrafluoroethylene or polymers thereof, this metal core being shaped so that a portion thereof is designed to be and remain endosseous and a portion thereof is designed to be and remain juxtaosseous, the implantation having rounded edges.

Abstract: The expander fits into the upper region of the patient's palatal cavity, and has a longitudinally extending screw which can be given prescribed turns by the patient over a predetermined timetable in order to spread his palate. The screw has forward and rear segments which threadably receive nuts oppositely threaded with respect to one another so that rotation of the screw causes movement of the nuts toward and away from one another. Laterally outwardly movable linkages are pivotally supported on these nuts so that the device operates in the manner of a scissors jack, and orthodontic wires are provided to connect the linkages to orthodontic bands which fit onto the patient's teeth so that the mechanical force and moment achieved in the scissors jack construction can be used to spread the patient's palatine bone segments.

Abstract: A doll of the type having a flexible, compliant outer casing or sack of material such as cloth, and which is substantially filled with a solid particulate filler such as beans or plastic beads. The doll of the present disclosure is characterized by having a self-standing main or central upright stack portion which is divided into two separate compartments one disposed vertically above the other. The doll may also have appendages such as arms and a head. By virtue of this arrangement, the particulate material is prevented from shifting to the bottom of the central portion. Such movement of the particulate material out of the top portion of the doll tends to create a distortion of the appearance of the doll and to provide inadequate support for the head. In a particular form of the doll the lower compartment may be filled with heavier material than is the upper compartment, which lowers the center of gravity and makes the doll more stable in its upright position.

Abstract: An improved dental instrument for use in cleaning teeth, the instrument having a polishing cup with a self-contained abrasive and a system for automatically supplying a cooling fluid to the polishing cup when the cup is rotated; the cooling fluid serving the additional purpose of lubricating the cup driving mechanism, thereby eliminating the need of packing the driving mechanism in grease and allowing the instrument to be sterilized between uses.

Abstract: A bandless orthodontic bracket for a tooth straightening assembly is attachable to the labial or buccal surface of a tooth with a cement. The portion of the bracket adjacent the tooth is provided with at least one undercut recess in which the cement is accommodated so as to provide a "physical" lock between the cement, when set, and the bracket. The frontal portion of the bracket, which is on the reverse side to the labial surface abutting portion, is provided with a smooth bow-shaped channel for accommodating a horizontally disposed arch wire. The arch wire makes contact with the base of the convex channel at one point and permits relative movement with respect to the bracket during mesiodistal tilting of the tooth.

Abstract: A removable orthodontic appliance for moving teeth is provided. It includes at least one or more inflatable membranes that are incorporated into the basic framework of the appliance. These inflatable membranes are inflated to desired pressures and the appliance is placed in the mouth so that the inflated membrane is on the opposite side of the direction the tooth is to be moved.

Abstract: A torquing spring formed of a wire loop having the top of its central portion adapted to engage the labial surface of the tooth and continuing into a pair of vertically extending legs. Each leg terminates at a pair of axially contiguous coil-sets. One of the coil sets associated with each leg is unrestricted, while the other of the coil-sets associated with each leg is bound to the base arch wire.

Abstract: A temporary protector defined by a sheet of pliable paper or like material of such shape and size as to cover the masticating or occlusal surface of a dental crown. The sheet has first and second sides, with the first side being covered with a film of pressure sensitive adhesive. The film of pressure sensitive adhesive on each protector permits the latter to be removably bonded to the masticating surface of a dental crown prior to the crown being permanently secured to a prepared tooth by the use of conventional means, I.E. a crown and bridge cement, polycarboxylate cement, or the like. Each protector prevents the undulating masticating surface of the dental crown on which it is mounted from being contaminated with cement during the time it is being mounted on the prepared tooth structure.

Abstract: A multi-ply pad is provided for disposition between the back of a domestic animal such as a horse and a saddle placed upon the horse's back. The pad includes a first lower ply having a flexible backing layer with a dense fibrous pile layer carried by the undersurface of the backing layer. The pile layer may be termed a fiber-on-end pile layer. The first and second layers include corresponding spaced peripheral portions and coacting fastener structure is provided on the corresponding spaced peripheral portions releasably securing the latter together with the upper and lower plies being free of direct connection with each other, independent of the fastening structure, for at least limited relative shifting of the plies of the pad in the areas thereof spaced from the fastening structure.

Abstract: A dental prothesis for permanent or prolonged implantation in a jawbone of a living body comprising a carbon root having specified properties including a modulus of elasticity of about 4.times.10.sup.6 psi, and an adherent, porous polymeric coating having specified properties and which is adapted to interface with bone.

Abstract: A self cleaning dental mirror apparatus utilizing the fluid dynamic properties of water and air to siphon the water across the reflective surface by air pressure through nozzle flanges surrounding a portion of the rim of the mirror surface, thus allowing the dentist free and continuous use of the dental mirror apparatus without interference from debris, mist and sprays normally produced in everyday dental operations. The apparatus is adaptable to standard dental consoles with means to regulate, measure and control all fluids separately or simultaneously and to provide a regulating means to control the amount of surface tension reducer operating through the water system.

Abstract: An orthodontic bracket is disclosed having one or more projections which extend vertically from the posterior surface of the bracket body. The projections are used for producing a glue-line having a predetermined thickness measured between the posterior surface of the bracket body and the front surface of the tooth to which the bracket is directly bonded by glueing. The thickness of the glue-line is equal to the vertical displacement of the one or more projections from the posterior surface of the bracket base. The ends of the one or more projections touch the front surface of the tooth when the bracket is directly bonded to the tooth.A process is also disclosed for attaching the orthodontic bracket of the present invention to the tooth of a patient undergoing orthodontic treatment.

Abstract: A horseshoe including an upper shoe member for attachment to a horse's hoof and having a latch recess, an intermediate body member having a latch tongue for engagement with the latch recess to secure the intermediate body member to the upper shoe member, and a lower shoe member adapted to be secured to the bottom surface of the body member. In a preferred form of the invention, the body member includes at least two cavities with separate inlets thereto for receiving fluent weight material.

Abstract: In a dentist's handpiece, a porous, static pressure air bearing device includes a rotatable shaft for mounting thereon a cutting tool, a bearing case, an air bearing portion provided in the bearing case for supporting the rotatable shaft, and a turbine blade formed integrally with the shaft or mounted on the shaft. The air bearing portion is formed of porous material.

Abstract: A vehicle carries a variable inertia flywheel which is mechanically connected to the road wheels of the vehicle. Change of inertia of the flywheel influences the motion of the vehicle in acceleration, deceleration, swerving.

Abstract: A combined spoon and toy for providing an incentive to small children to enjoy eating their food. The toy is integrally interposed between the ladle and handle portions of the spoon.

Abstract: For use in a beehive, a molded plastic super having rectangularly arranged vertically extending walls including end walls and side walls. Each side wall provides, at its ends, vertically spaced apart openings while each end wall provides, at its ends, integrally molded tenons resiliently snapped into engagement with the openings in the adjacent side wall end, thereby rigidly to connect the walls. A molded plastic bottom board upon which the super rests is provided, the bottom board having a rectangularly shaped planar intermediate portion with opposing sides and ends and with an upwardly projecting outer perimetral wall extending longitudinally along the sides and one of the ends to provide an upwardly facing surface upon which the side walls and one end wall of the super rest. The bottom board also provides an inner perimetral wall extending longitudinally alongside each outer wall and projecting upwardly into the super to position the walls thereof.

Abstract: A composition useful in forming a physiologic root end closure, a method of making the composition and a method utilizing the composition. The composition comprises a buffered solution of colloidal collagen, a calcium salt, a phosphate salt, and optionally, Lugol's solution.

Abstract: A retainer comprising a portion located against the lingual tooth and tissue surfaces for holding a wire against the labial surfaces of the anterior teeth, which is known as a Hawley Retainer, is preformed as a molded piece of a shape and of a material permitting fitting to a patient by a method which includes reshaping of the preform directly in the mouth of the patient, thereby eliminating the need to first form a cast of the patient's teeth. Several preforms of different sizes form a set which will fit mouth sizes of substantially the entire dental patient population. The material is designed to soften for non-elastic manipulation against the lingual surfaces at a temperature above body temperature but below that temperature at which the tissues within the patient's mouth would burn.

Abstract: The apparatus for cleaning bee culture frames of the type having slots for frames, which are formed into blocks by aligning the frames, comprises a suitable framework, an in-feed ramp, a board-breaker assembly, and a board-cleaning assembly. The infeed ramp carries the blocks to a vertically disposed channel provided on the framework, the channel controlling forward movement of the block on the ramp and conducting frames separated from the block downwardly in the apparatus. The board-breaker assembly comprises at least a blade reciprocating vertically in a channel disposed parallelly to the frames with the contact face of the blade being disposed at a pre-determined position to operate adjacently disposed frames in the block, and frame-cleaning teeth which interdigitate with slots of the frame.