Abstract: The invention relates to a method for vulcanizing caoutchouc or latex by adding a mixture M which contains a component a) from a1) 20 to 96% by weight of sulfur, a2) 4 to 80% by weight of a complexing agent, and optionally other additives b) to caoutchouc or latex and then vulcanizing the mixture. The inventive method is characterized in that the average particle size of the primary particles of component a) ranges from 0.05 to 20 ?m.

Abstract: A device for relocating a lower jaw relative to an upper jaw having a first sleeve with a first holder mounted on its one end, and a second sleeve. An internal thread is located in one of the two sleeves and a matching external thread on the other sleeve, by which they are screwed together over varying lengths. A third sleeve having one end, i.e. the end facing the first holder, is mounted on the second sleeve and is adapted to dampen impacts that may act in the longitudinal direction. A rod is arranged in the third sleeve for longitudinal displacement. A second holder is mounted outside the third sleeve on that end of the rod which faces away from the first holder. A stop is provided on the rod or in the neighborhood of the second holder, and abuts directly or indirectly against that end of the third sleeve which faces away from the first holder and toward the second holder. The length of the rod is selected to ensure that in its abutting position it will extend right into the first sleeve.

Abstract: The invention describes an orthodontic expansion screw having two bodies (1 2) whose mutual spacing can be varied by means of a spindle (3) acting upon the two bodies (1, 2),

Abstract: A device for relocating a lower jaw relative to an upper jaw. The device is telescopically extensible and is a kind of a Herbst hinge, including a holder with an eye mounted on each of its two ends. The device can be mounted in articulated fashion, for example on a molar strip in the upper jaw and on a molar strip in the lower jaw. The molar strip is usually provided for this purpose with a counter-holder with an internal thread into which a head screw can be screwed through the respective holder of the device, the articulated connection being realized by the fact that either the shaft of the head screw or a shaft engages the eye of the device so as to permit the latter to rotate about the respective shaft.

Abstract: An orthodontic appliance, particularly a bracket or a buccal tube, consists, in full or in part, of a plastic material which exhibits a water absorption capacity and in which is deposited a water-soluble, especially an antibacterial additive that restrains the formation of plaque.

Abstract: The invention describes a composite palatal arch for the correction of the position of teeth, which is built up from a plurality of wire sections (1, 2, 3, 4, 5) made from different materials. One of the materials is a shape-memory alloy that assumes a superelastic state at the temperatures prevailing in a human mouth. The palatal arch comprises two end sections (2, 3), which are intended to fix the palatal arch in a tooth lock (16, 17) and which are made from of a normal-elastic material. The superelastic section (4, 5) of the arch is softer than are the normal-elastic sections (1, 2, 3). The superelastic material is present only in two intermediate sections (4, 5) between the two end sections (2, 3) and a central section (1), the two intermediate sections (4, 5) are each arranged adjacent one of the end sections (2, 3), and the central section (1) of the palatal arch consists of a normal-elastic material.

Abstract: A device for relocating a lower jaw relative to an upper jaw

Abstract: Jackscrew for use in correcting misalignments of teeth, comprising two main bodies (1,2), whose mutual separation can be adjusted by means of a spindle (3) provided with an operating part (5) and, continuous with that part, one or two screw-thread sections (7,11) the operating part (5) being rotatably mounted in one body (1) and one screw-thread section (11) being rotatably mounted in the other body (2), further comprising straight-line guide elements (22,23) which engage with both bodies (1,2) and guide them in a straight line while also preventing any relative rotation when the separation between the bodies is altered, and a threaded sleeve (13,14) on each of the screw-thread sections (7,11) of the spindle (3) the threaded sleeve (13,14) being guided inside a recess (6,10) in the respective body (1,2) and along the spindle (3) so as not to rotate relative to the body and transmitting its sliding motion to the bodies (1,2) via a spring (18,19) which determines the expansion force.

Abstract: A elastic expansion appliance for correcting misalignments of teeth, which has two members connected by linear guidance element(s), a spacing between which can be modified via a spring arranged between them, wherein in order to adjust the distance over which the spacing of the two members can be modified, a stop of variable length (measured in the direction of the linear guidance elements) is provided for the spring or for a spring arrangement of more than one spring and/or for one of the two members.

Abstract: Jackscrew for use in correcting misalignnents of teeth,. comprising two main bodies (1,2), whose mutual separation can be adjusted by means of a spindle (3) provided with an operating part (5) and, continuous with that part, one or two screw-thread sections (7,11) the operating part (5) being rotatably mounted in one body (1) and one screw-thread section (11) being rotatably mounted in the other body (2), further comprising straight-line guide elements (22,23) which engage with both bodies (1,2) and guide them in a straight line while also preventing any relative rotation when the separation between the bodies is altered, and a threaded sleeve (13,14) on each of the screw-thread sections (7,11) of the spindle (3) the threaded sleeve (13,14) being guided inside a recess (6,10) in the respective body (1,2) and along the spindle (3) so as not to rotate relative to the body and transmitting its sliding motion to the bodies (1,2) via a spring (18,19) which determines the expansion force.

Abstract: Expansion appliance for correcting tooth misalignments having the following features: a first member (1), a second member (2), a spindle (3) which, for changing the distance between the first (1) and the second member (2), engages the two members (1, 2) in such a way that the distance can be varied by a predeterminable limited magnitude in the longitudinal direction of the spindle (3) in the stationary condition of the latter. There are provided two parallel guide rods (21), located on both sides of the spindle (3). For guiding the member (1, 2) in straight alignment the guide rods (21) are received and guided in holes (20) in the two members (1, 2) which extend in parallel one to the other and each of which is open toward the respective other member (2, 1). A compression spring (2) is tensioned between at least one end of each guide rod (21) and the respective opposite end of the hole (20), this end of the hole (20) being closed.

Abstract: A device for tooth-position correction includes a bracket or buccal tube formed from a plastic material by the injection-molding process, having a pad with a concave underside for connection onto the front face of a tooth, and an upper face from which extends an integrally formed mounting and guide element for receiving an arch wire. The underside of the pad is provided with projections having undercuts formed by bars placed on the underside during the injection-molding process.

Abstract: An orthodontic attachment, in particular a bracket, which is made of metal, consists of a foot section which is made of titanium or of a corrosion-resistant alloy consisting substantially of titanium, for bonding to a tooth, and of a functional section, which is made of stainless steel and which is mounted on the foot section.

Abstract: This invention relates to an orthodontic bracket for retaining a wire arch for tooth correction, which bracket comprises a base part having single or double wings and are formed with an open-ended and open-topped transverse groove for receiving the wire arch, and also comprises a footpad secured to the base part and adapted to be adhesively joined to an adjacent tooth surface. A groove is formed in the base part and/or in the pad and extends on the underside thereof or particularly a tunnel is formed in said base part and/or pad, which groove or tunnel extends in the direction in which the wings are spaced apart and serves to anchor partial wire arches.

Abstract: A process for the production of profiles from composite fibrous materials, wherein the strands of fibrous materials continuously impregnated with liquid reaction resins are wrapped or braided immediately after impregnation or in a prehardening zone with drawn and/or preoriented and/or textured organic fibres or monofils or mixtures of organic and inorganic fibres or monofils and are hardened in a following hardening zone.

Abstract: This invention relates to an orthodontic appliance comprising a low pull and/or a high pull, which low pull preferably extends through and is slidable in a guide sleeve of a nape pad, and the low pull and/or the high pull are provided at each end with a series of holes for a selective connection to spring elements connected to bow means. The novel orthodontic appliance is simpler, less bulky and less conspicuous. This is accomplished in that elastically stretchable flat strips of plastic material are provided at one end with an eyelet for connection to the low pull and/or the high pull at the series of holes and at the other end with an eyelet for connection to the bow means. That arrangement provides a pulling device which is flat rather than bulky and can easily be connected and which is convenient for the patient and can be made to have the color of the skin so that it is less conspicuous.

Abstract: An orthodontic device includes an upper jaw thrust plate and a lower jaw thrust plate. These plates are connected to the teeth and are provided in the front teeth region with activating rods and slideways respectively, cooperating to effect a sagittal displacement of the jaws relative to each other. Two treatment stages are to be combined and an optimum result of the treatment within a reduced time is to be ensured. The upper or lower jaw thrust plate includes two sections, which are connected by a jackscrew mechanism, to which the activating rods are secured.

Abstract: This invention relates to a wire-tensioning and/or -fixing orthodontic device comprising a bracket having preferably a bearing eye, a wire-engaging shoulder, and a retaining member which is rotatably mounted in the bearing eye and adapted to retain a correcting wire in engagement with said wire-engaging shoulder. For use in the lingual technique, the orthodontic device can be further miniaturized in that the base portion of the bracket has no flange arms and is secured to a backing pad and the latter is provided on the side opposite to the bracket with a metal fabric adapted to be adhesively fixed to a tooth. The backing pad comprises outwardly extending side arms (rotation-inducing arms, adaptation-inducing arms and activating arms), which are adapted to be activated by being bent.

Abstract: This invention relates to an orthodontic spreader, particularly for correcting the positions of molars in the upper jaw, and comprises pressure-transmitting nuts for applying force at points which are as close as possible to the center of resistance. The spreader is capable of applying a high pressure and has a large spreading capacity and is as convenient as possible for the patient. The actuating screw for moving the pressure-transmitting nuts in opposite directions comprises an actuating portion, which is disposed between said pressure-transmitting nuts. Guide rods are slidably mounted in both pressure-transmitting nuts and carry stops which axially restrain said guide rods.

Abstract: A wire loop adapted to be slung around a tooth to be rotated has two end portions which respectively extend through and are guided by two juxtaposed spaced apart through holes formed in a body. Polygonal roller means are rotatably mounted in said body between said holes and have radially outer edge portions. Said holes are laterally open toward said roller means to expose said wire end portions in said holes to said radially outer edge portions, which bite into the sides of said wire end portions in said holes. Said roller means are rotatable to move said wire end portions in said holes by means of said radially outer edge portions biting into said wire end portions.