159 results about "Anterior tooth" patented technology

Orthodontic brackets and appliances, and methods of making and using orthodontic brackets. The orthodontic bracket may include a molded identification marking including at least one alphanumeric character disposed on a visible surface. A kit of self-ligating orthodontic brackets may be provided that includes individual brackets of different archwire slot widths for attachment to anterior and posterior teeth during a corrective orthodontic treatment. An appliance or auxiliary may be provided that includes a spring-loaded latch operative to secure the appliance to an orthodontic bracket.

The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coating with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.

The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coating with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.

Disclosed herein is an apparatus for correcting the position of teeth used in dentistry. The apparatus for correcting the position of teeth is constructed in a structure in which an implantation unit is securely fixed to a palate, e.g., the roof of a mouth, the bony tissue of which is very excellent and the soft tissue thickness of which is small, using a fixing source, opposite suspension parts are suspended by opposite buccal molar areas to draw front teeth backward, whereby the movement of teeth at the molar tooth areas is prevented, and therefore, reimplantation is unnecessary, application points for drawing the front teeth, including the molar teeth, backward are located at the buccal molar areas, whereby the application of a force (a correction force) is easy, it is possible to induce natural extension of a dental arch (an arch-shaped area where teeth are implanted), and the teeth are moved backward to correct the irregularities of teeth, whereby it is possible to considerably reduce a possibility of tooth extraction.

Described is an orthodontic aligner implement that can ensure the accuracy and efficiency of clear aligner orthodontic therapies as well as increase patient compliance by reducing discomfort and combining functionality into a breath-freshening medium. The implement includes a consumable mass having at least two channels disposed on opposite sides of the mass and traversing the width of the mass. The channels are adapted to seat between opposing anterior or incisor teeth. Also described is a method of positioning an orthodontic aligner into a prescribed position that includes placing the aligner approximately in the prescribed position in one's mouth, placing the aligner implement described above into the mouth, and applying the implement in contact with the aligner in one's mouth.

The invention provides a digitalized small-size stacked high-retention dental implant operation guide plate and a manufacturing method of the digitalized small-size stacked high-retention dental implant operation guide plate. The method comprises the following steps: acquiring preoperative oral cavity CBCT data of a patient, and reconstructing a model I; acquiring optical scanning data of the surfaces of preoperative teeth and gingiva of a patient, and reconstructing a model II; fitting the model I and the model II, and designing a three-dimensional position of the implant in the tooth-missing area; copying the model II, and generating a model III according to the guide plate in-place channel direction; selecting the surface after undercut filling corresponding to the dentition cheek and the lingual surface in the model III as a surface I; according to the boundary of the surface I, extracting a surface II on the model II; combining the surface I and the surface II to generate a lining model; combining the lining model with the model II to generate an outer sleeve main body model of the guide plate; and finally, carrying out machine shaping. By adopting the scheme, retention can be realized by fully utilizing the undercut of the supporting teeth, so that the stability of the guide plate can be guaranteed while the dentition coverage range of the guide plate is reduced, and the precision and safety of the guide plate for guiding an implantation operation are further improved.

A removable orthodontic device includes an anchorage cap segment, a moving cap segment, a pair of spring elements, and a guiding wire. The anchorage cap segment is removably worn on the anterior teeth of a dental arch. The moving cap segment is removably worn on at least one posterior tooth on one side of the dental arch. The spring elements are disposed between the anchorage and moving cap segments to generate an elastic resilient force to move the moving cap segment relative to the anchorage cap segment. The guiding wire has a U-shaped portion and two rod portions. The U-shaped portion is embedded in and disposed around three sidewalls of the moving cap segment, and the rod portions are received in guiding channels formed in the buccal and lingual sidewalls of the anchorage cap segment to guide the movement of the moving cap segment.

The invention discloses a rat mouth gag which comprises a base, a forward mouth gag, a lateral mouth gag and a rat fixing plate. The base is a rectangular groove body, the opener bases are symmetrically arranged on the left side and the right side of the top surface of the base, and the opener bases are also symmetrically arranged on the upper side and the lower side of the top surface of the base; the forward mouth opener and the lateral mouth opener are mounted on mouth opener bases on the upper side and the lower side of the base, one end of the forward mouth opener and one end of the lateral mouth opener penetrate through the through hole I, and the other end of the forward mouth opener and the other end of the lateral mouth opener are mounted in the through hole II through a rotating shaft I; the rat fixing plate is obliquely arranged in the middle of the base, the chest fixing belt and the leg fixing belt are arranged on the top face, the supporting rod is arranged on the bottom face, one end of the supporting rod is connected with the rat fixing plate, and the other end of the supporting rod is connected with the base. According to the rat mouth gag, on one hand, anterior teeth, posterior teeth, upper jaw and lower jaw of a rat can be opened in four directions at the same time, the opening distance in each direction can be independently adjusted, and on the other hand, the position of the rat and the positioning of the mouth gag can be achieved.

The invention relates to a dental implantation method, and particularly relates to an anterior tooth minimally invasive windowing oral implantation method. The anterior tooth minimally invasive windowing oral implantation method is characterized by transversely cutting at an implantation site along the alveolar ridge crest or removing gum at the alveolar ridge crest with a gum ring cutter to form a transverse incision A, then making a transverse incision B along a buccal and labial vestibular groove bottom in an implantation area, and hiddenly dissecting mucoperiosteum from the transverse incision A to the transverse incision B by using a periosteum elevator to make the incisions A and B through. The anterior tooth minimally invasive windowing oral implantation method disclosed by the invention guarantees the minimally invasive implanting of an implant body as well as minimally invasive bone grafting, and ensures sufficient bone support around the implant body; the method disclosed by the invention has the advantages of reduction of longitudinal incisions of gum, small operative trauma, small postoperative swelling, little infection probability, short operation time, no longitudinal dislocation of gum during suturing, good gum healing morphology, good repair aesthetic effect and the like.

A removable orthodontic device includes an anchorage cap segment, a moving cap segment, a pair of spring elements, and a guiding wire. The anchorage cap segment is removably worn on the anterior teethof a dental arch. The moving cap segment is removably worn on at least one posterior tooth on one side of the dental arch. The spring elements are disposed between the anchorage and moving cap segments to generate an elastic resilient force to move the moving cap segment relative to the anchorage cap segment. The guiding wire has a U-shaped portion and two rod portions. The U-shaped portion is embedded in and disposed around three sidewalls of the moving cap segment, and the rod portions are received in guiding channels formed in the buccal and lingual sidewalls of the anchorage cap segment to guide the movement of the moving cap segment.

The invention relates to an all-ceramic tooth preparation method based on a facial and oral dentition three-dimensional scanning technology. The method comprises the following steps: carrying out spatial three-dimensional registration on facial three-dimensional data and dentition three-dimensional data of a patient through a plurality of feature points on the surfaces of teeth and gingiva of thepatient; designing a lip surface three-dimensional form of the upper anterior teeth and / or the lower anterior teeth to enable the tooth protrusion and the incisor curve to accord with the upper lip shape and the lower lip shape of the patient; copying the three-dimensional shapes of the tongue surface of the original upper anterior tooth and the incisor end of the lower anterior tooth of the patient, and adjusting the three-dimensional shapes so that the forward extension and lateral movement tracks of the lower anterior tooth of the patient accord with the leading characteristics of the patient before repair to obtain a lingual three-dimensional shape; performing data fusion on the lip surface three-dimensional form and the lingual side three-dimensional form to form a three-dimensional digital model with an expected repair effect; and performing three-dimensional printing based on the three-dimensional digital model with the expected repair effect to obtain a resin model, and preparing the all-ceramic tooth according to the obtained resin model. Real three-dimensional aesthetic design can be carried out for the patient.

The invention discloses a concealed correcting appliance for externally-expanded dental arch of an anterior tooth area. The concealed correcting appliance comprises a tooth arrangement socket, a base,a lip side surface and a tongue side surface. The concealed correcting appliance has the beneficial effects that a certain difference is formed between the lip side surface as well as the tongue sidesurface and the dislocated teeth and jaw; after the correcting appliance is deformed, a force for moving the teeth to the direction of the applied displacement load is produced, then the teeth are certainly moved, and finally the dislocated teeth are corrected; the thickness of the tongue side surface is greater than the thickness of the lip side surface, and the thickness of the concealed correcting appliance is controllable, so that when the force for the deformation of the correcting appliance is larger, the force of the externally-expanded dental arch is greater than the counteraction force, and the teeth are externally expanded and moved; in step A, the teeth and jaw in a mouth are scanned in a three-dimensional way so as to build a three-dimensional digital model, the comprehensivestereo tooth and jaw shapes can be obtained, and a gypsum tooth cast can be converted into an operable digital model; in step C, a resin tooth model is manufactured by a 3D printing technique, so as to quickly, accurately and conveniently convert; the concealed correcting appliance is suitable for being popularized and applied.

The embodiment of the invention discloses a bony III-class malformation correction method, which comprises the following steps of: quickly aligning teeth by adopting a multi-effect nickel-titanium arch wire, retracting anterior teeth by utilizing an anchorage nail and a constant-force tension spring to remove anterior tooth reverse on the premise of removing anterior tooth occlusion disorder, and after the anterior tooth reverse is removed, lifting upper and lower posterior teeth by using a TMA wire in a step curve manner, quickly establishing a posterior tooth occlusion relationship, stabilizing a new position of retreat of a mandible, removing an anterior tooth occlusion wound, and lifting and clockwise inclining the plane of the rear part of the mandible on the premise of maintaining normal coverage of the anterior teeth so as to promote clockwise rotation of the mandible, retreat of the chin of the mandible and lip inclination of the anterior teeth, and finally adjusting the occlusion stage to observe the condition of a patient. According to the invention, the mandibular prolapse can be effectively improved, and the reverse face type can be improved, so that the non-tooth extraction correction of adult bone mandibular prolapse cases can be completed.

Conventional X-ray photographing has several problems for eliminating the influence from the cervical vertebrae such as rework of original images, causing possible loss of useful information, as well as long processing time and the need for a plurality of panoramic images. The X-ray photographic device according to the present invention can eliminate the influence from the cervical vertebrae projected at around the anterior teeth of the panoramic image of a tooth row, without missing the original image information and without influence of different shapes of cervical vertebrae and X-ray permeability by each subject. In addition, as the present invention achieves these through arithmetic processing, there is no need to intensify X-ray output in the section corresponding to the anterior teeth, nor decelerate the rotating speed of arms during photographing, and it is possible to suppress the X-ray dose received by the subject.