54 results about "TOOTH SIZE" patented technology

A method for preparing a partial or full dental prosthesis, including the following steps: 1.1. acquiring a patient's oral situation by taking an impression or by digital recording; 1.2. if required, digitizing the patient's oral situation; 1.3. selecting the teeth forming the dental prosthesis from a library of teeth or groups of teeth to obtain a virtual set-up of the teeth, which is positioned virtually in a space that takes the acquired patient's situation into account; 1.3.1 said library contains designs of dental arches, tooth shapes, tooth sizes 1.3.2 said library contains designs of the gingiva, and 1.3.3 said library contains total set-ups and / or modular set-ups for all of Angle's bite classes; 1.4. if required, modifying the set-up obtained from the library; 1.5. virtually embedding the teeth arranged in the virtual set-up in a virtual gingiva; 1.6 producing the real prosthesis.

A kit which may be used for anterior tooth selection, the kit including a facial meter for measuring the width of a nose and / or the distance between the eyes, and for correlating the measurement to a tooth size, and an anterior tooth selection guide consisting of a plurality of cards which have various sets of upper anterior teeth of differing sizes, soft and bold, depicted thereon so that a dentist or dental professional may place a card adjacent the face of the patient to make an initial evaluation of the teeth to be selected based upon the use of the anterior tooth selection guide. The kit may also includes a mold guide which includes various sets of anterior teeth and posterior teeth. This kit facilitates the tooth selection process by the dental professional.

Disclosed is a power-transmitting apparatus. A power-transmitting apparatus of the present invention comprises: a pin gear provided with a plurality of pins capable of rolling movement; and a spur gear provided with a plurality of teeth and en-gagingly coupled to the pin gear so as to be relatively movable, wherein the spur gear teeth are formed with a cycloid tooth shape, and a polygonal tooth root space is formed at a tooth root region of the spur gear. As compared to a trochoid tooth shape, the tooth shape of the spur gear engagingly coupled to the pin gear so as to be relatively movable according to the present invention has a greater tooth size so that it can be applied as a cycloid tooth shape capable of maintaining a sufficient tooth contact ratio, and can resolve a reduction in tooth thickness and the wedging of the pins from an undercut at the tooth root region.

A lift drive comprising: a spiral drive element having an axis of rotation, a rack having teeth sized and shaped to be engaged by the spiral drive element, the rack having a longitudinal axis parallel to the axis of rotation, and a motor to rotate the spiral drive element, wherein upon the spiral drive element-rotating, one of the spiral drive element and the rack moves relative to the other along the longitudinal axis.

The invention discloses a method for repairing a broken tooth chain wheel. The method comprises the following steps: step I, acquiring a dimension parameter and a material of the chain wheel; step II, polishing a broken tooth position; step III, preheating the broken tooth position to 300 to 400 DEG C and performing heat preservation; step IV, preheating a welding rod to 300 to 400 DEG C, and setting current of a welding machine to 80 to 100 A, performing repair welding on the broken tooth position of the chain wheel, and enabling the part after repair welding to cover an original chain wheel tooth part and making machining allowance; step V, performing annealing treatment on the chain wheel after repair welding; step VI, performing flaw detection on a repair welding part of a broken tooth, if a flaw appears, removing the flaw part by using carbon arc gouging, and repairing the flaw part by using steps II to V; and step VII, machining the contour of the repair welding part into a wheel tooth size by using a machining mode. According to the method for repairing the broken tooth chain wheel provided by the invention, the repair welding part and the chain wheel body have high fusibility; the whole chain wheel is prevented from being changed by separate repair on a chain tooth, so that cost is greatly reduced.

The invention discloses a tooth-size-adjustable gear which comprises a gear body, an adjusting shell, a tooth shell, sliding teeth, a toothed bar, an adjusting bar, an adjusting hole and a gear shaft hole. The adjusting shell is arranged outside the gear body. The tooth shell is made on the surface of the adjusting shell. The sliding teeth are mounted in the tooth shell. The toothed bar is connected with the sliding teeth. The adjusting hole is made on the surface of the gear body. The adjusting bar is connected with the toothed bar. The gear shaft hole is made at the center of the gear body. Therefore, the tooth-size-adjustable gear is simple in structure, adjustable in tooth size, high in universality, convenient to use, safe and reliable.

The invention provides a fabricating method of an all-ceramic preformed crown basic set. The fabricating method comprises the following steps: (1) designing the size of the all-ceramic preformed crownset according to the collected tooth size data, wherein the thickness of the all-ceramic preformed crown is 4-6 mm, and carrying out computer typesetting; (2) selecting zirconium oxide, and carryingout cutting to form a zirconium oxide crown; (3) carrying out coloring in a coloring agent; (4) carrying out sintering in a sintering furnace; (5) carrying out grinding for trimming; (6) carrying outglazing on the outer part of the crown, and carrying out sintering; and (7) carrying out quality testing and delivery. For the fabricating method of the all-ceramic preformed crown basic set, the zirconium oxide crown with the excellent biocompatibility, aesthetic degree and safety is adopted, thus the quality stability of the preformed crown is guaranteed, the problems of mixing ratio error of the raw materials and the coloring agent and the incomplete forming during the injection moulding process are avoided, due to the high precision of a five-axis linkage device, the delivery qualificationrate of the product is guaranteed, the production and fabrication procedures are reduced, thus the labor cost is reduced, and meanwhile, the batch production can be accelerated.

The invention relates to the field of machinery, in particular to a surrounding adaptive electric toothbrush with a reset mechanism. The electric toothbrush comprises an electric toothbrush body, theelectric toothbrush body comprises a brush head, the brush head comprises a brush head handle, and a first plate is arranged on lower portion of the brush head handle. By the aid of design, bristles of three surfaces generate surrounding effects and are changed along with change of the thickness from front teeth to large teeth, adaptive effects of automatic fitting of the bristles meet tooth cleaning requirements of people with different oral cavity and different teeth, the bristles are arranged on three surfaces, the design solves the problem that the areas in the teeth cannot be easily brushed and cleaned, various bad brushing habits are avoided, the brush head positions cannot be actively changed, finding of cleaning points is omitted, full processes of tooth brushing can be completed by pushing the brush head, tooth brushing processes are simplified, and tooth brushing efficiency is improved.

The invention relates to an image big data acquisition and processing method. The method includes providing and using of a multifunctional dental filling system based on image recognition. The system comprises data acquisition equipment, image processing equipment, image recognition equipment and automatic filling equipment. The data acquisition equipment is used for high-definition oral image data acquisition in an oral environment of a patient to obtain high-definition oral images; the image processing equipment is used for processing the high-definition oral images to obtain processed oral images; the image recognition equipment is used for recognizing target teeth and tooth cavities in the target teeth on the basis of the processed oral images and determining actual sizes of the tooth cavities on the basis of tooth cavity sizes and target tooth sizes; the automatic filling equipment starts a coarse adjusting mode after receiving the actual sizes of the tooth cavities, determines corresponding filler volumes on the basis of the actual sizes of the tooth cavities in the coarse adjusting mode, and injects filler into the tooth cavities of the target teeth according to the determined corresponding filler volumes.