53 results about "Posterior Tooth" patented technology

An unimpeded distalizing jig, comprising a pair of tooth bond pads, an intra dental arch telescoping assembly, comprising a rod-like insertion and a tubular shell, which constrains the rod-like insertion to move with respect to the tubular shell along an elongated axis, which may be a radial path; and a force generating structure configured to supply an off-axis distalizing force to the intra dental arch telescoping assembly, such that the distalizing force is provided to the posterior tooth substantially without applying an anteriorizing force on the anterior tooth. The force generating structure may be an elastic band fixed by a hook to the tubular shell on one side, and to a molar on an opposing dental arch on the other side.

The invention discloses a maxillary sinus external lifting operation auxiliary guide plate and a preparation method thereof. The preparation method comprises the following steps of: obtaining scanningdata of a posterior tooth grafting area, a corresponding maxillary sinus area and an adjacent area, and reconstructing the scanning data into three-dimensional data; the maxillary sinus elevation region was extracted from the reconstructed three-dimensional data and extended to the palatal side of the implantation region and the adjacent region. The extended external maxillary sinus lifting operation area was thickened, and an opening was reserved at the corresponding position of the fenestration hole, and then the boundary of the thickened external maxillary sinus lifting operation area wasfused and preserved. The maxillary sinus external lifting operation auxiliary guide plate is obtained by printing that saved data through a printing device; The method can prepare individualized auxiliary guide plate for different patients, ensure the matching between the auxiliary guide plate and different patients, and improve the accuracy of maxillary sinus external lifting operation; In addition, the method is easy to operate and low in cost, which is easy to be popularized.

The invention discloses an invisible correction method for treating class 2 and class 3 malocclusion by using an occlusion repositioning device, which comprises the following steps: respectively fixing the occlusion repositioning device on the mandibular or maxillary posterior tooth area on both sides, taking a maxillary and mandibular full-mouth model, filling a plaster model, scanning, transmitting an obtained STL file to invisible correction design software, performing multi-step invisible correction design, finally forming an STL design file, outputting the STL design file to a 3D printer to print a female mold, and pressing a transparent high polymer material on the female mold to form the bracket-free invisible corrector. The design process of the invention comprises the following steps: firstly, fixing an occlusion repositioning device to a back tooth area, connecting the back tooth area as a whole, not designing movement, only correcting an anterior tooth area, correcting the back tooth area, and finally finely adjusting the positions of upper and lower jaw teeth, thereby finishing orthodontic treatment of class 2 and class 3 malocclusion.

The invention provides a posterior tooth decompression bite plate and a manufacturing method thereof, relates to the technical field of orthodontic instruments, and is used for improving the treatmenteffect of treating temporal-mandibular joint disorder comprehensive syndromes. The posterior tooth decompression bite plate comprises a retainer and a bite guide body, the retainer extends in a curveconsistent with the dentition in shape and comprises a palate side wall, a buccal side wall and an occlusal surface, the palate side wall and the buccal side wall are oppositely arranged, the occlusal surface is connected between the palate side wall and the buccal side wall, and the palate side wall, the buccal side wall and the occlusal surface define a tooth socket used for being fixed to thedentition. Wherein the occlusion guide body is arranged in a molar area of the retention body, comprises an occlusion surface used for being propped against jaw teeth, and is used for strutting an upper jaw dentition and a lower jaw dentition and enabling a lower jaw condylar process to retreat to an edge position limited by a temporal-mandibular ligament. The posterior tooth decompression bite plate provided by the invention is used for treating temporomandibular joint diseases.

The invention discloses a temporomandibular joint condyle development inducer and a preparation method thereof. A centric relation position, a condyle guide and an incisal guide of a patient are obtained through an electronic facebow; a virtual occlusion frame is set in three-dimensional modeling software according to the centric relation position, the condyle guide and the incisal guide; a firstpair of mandibular occlusal pads is designed according to the virtual occlusal frame; a bilateral mandibular ramus height difference value and a mandibular tubercle sagging compensation amount of thepatient are obtained through imaging examination; and the thickness of a posterior tooth area occlusal pad of the first pair of mandibular occlusal pads is adjusted according to the bilateral mandibular ramus height difference value and the mandibular tubercle sagging compensation amount to obtain an Nth pair of mandibular occlusal pads. Therefore, early non-invasive intervention of the condylar hyperplasia problem is achieved, overdevelopment of a hyperplasia side is inhibited, normal development of a healthy side is promoted, symmetrical development of bilateral condyles is induced, clinicalpopularization is facilitated, and the curative effect is ideal.

The invention relates to a partial dental prosthesis (1) having at least one surface (2) for forming a chewing surface of a posterior tooth (3), wherein the partial dental prosthesis (1) comprises a composite material (4) and the composite material (4) contains at least one organic binding agent (5), preferably methacrylate, and, preferably inorganic solid particles (6) as filler, wherein at least the surface (2) for forming the chewing surface, preferably the entire outwardly facing surface of the partial dental prosthesis (1), is formed at least in some regions, preferably completely, by a layer (7) that comprises fused-together solids particles (6).

The invention relates to a surgical positioner for a posterior tooth implantation hole preparation surgery, which is used for the posterior tooth implantation hole preparation surgery. The surgical positioner comprises a tooth implantation handpiece, a handpiece head, a drill bit and a positioner body, wherein the handpiece head is arranged at the front end of the tooth implantation handpiece, thedrill bit is connected to the handpiece head, the positioner is connected with the handpiece head; and the positioner comprises a tooth end, a handpiece end and cross rods, two ends of the cross rodsare respectively connected with the tooth end and the handpiece end, the handpiece end is connected with the handpiece head of the tooth implantation handpiece, and the tooth end is connected with the same tooth opposite to a surgery position. The handpiece head of the tooth implantation handpiece is connected with the same posterior tooth on the opposite side of the implant tooth by the surgicalpositioner, and the movement range of the drill bit on the handpiece head is controlled within a set range by setting the parameters of adjustors of the tooth end and the cross rods, so that the accuracy of the fossa during an implantation foramen preparation surgery is improved, and the reliability is better compared with that of bare-handed operations of doctors.

The invention discloses an assembly for assisting tooth implantation in a posterior tooth area, and belongs to the technical field of medical articles. The assembly for assisting tooth implantation inthe posterior region comprises a fixing assembly, a position-limiting assembly and a sleeve assembly, wherein the fixing assembly comprises a first clamping block and a second clamping block which are arranged oppositely, the top of the first clamping block is connected with the top of the second clamping block through an arch-shaped connecting assembly, the top of the connecting assembly is provided with a sliding hole, the position-limiting assembly comprises a clamping assembly, and a sliding block and a supporting assembly which are respectively arranged on two sides of the top of the clamping assembly, the sliding block penetrates the sliding hole and is in sliding fit with the sliding hole, the sliding block is fixedly connected with the connecting assembly, and the sleeve assemblyis connected with the clamping assembly. In the assembly for assisting tooth implantation in the posterior region, a relative position relationship between the position-limiting component and the fixing assembly is adjusted by sliding, thereby a position of the sleeve assembly is adjusted, and then a drilling position on the gum is adjusted, so that the entire assembly can meet a distance betweenteeth of different patients, and can be used repeatedly.

The invention discloses a one-piece molar-back-pushing device. The device comprises: a pair of retention pieces, wherein a pair of the retention pieces is separately fixed at the palate side of dentalcrowns of molars at the two side of the oral cavity; a connecting body which is arranged between a pair of the retention pieces in a connection mode; traction hooks, wherein a plurality of the traction hooks comprise front traction hooks and side traction hooks, the front traction hooks are arranged on the connecting body, and the side traction hooks are respectively arranged on the retention pieces; at least one micro screw which is fixed at the palate part of the oral cavity and is positioned at the far middle side of the connecting body; and at least one connecting piece, wherein each connecting piece is arranged between one micro screw and one traction hook in a connection mode. The one-piece molar-back-pushing device is simple in structure and convenient to use, can push back molarsas far as possible within the physiological limit, can effectively overcome the defects of lip inclination of anterior teeth, cheek inclination of posterior teeth, tooth rotation and the like, and reduces the implantation number of micro screws.

The invention relates to a multifunctional odontoscope fixed on a dental handpiece in a tooth preparation process. The odontoscope is composed of a mirror part and a supporting part. The supporting part is annular and has an opening at the lower part, the front shape is consistent with the head shape of the dental handpiece, and the supporting part can be clamped on the head of the dental handpiece. The mirror part is composed of a concave mirror and a mirror handle. The concave mirror has an amplification function, and a circle of LED lamp beads are arranged around the concave mirror to provide a light source. The mirror handle is hollow, a lighting circuit and a battery bin are contained in the mirror handle, and the handle is provided with a circuit switch and a battery bin opening. The mirror part comprises an anterior tooth mirror and a posterior tooth mirror which are selected by a doctor during tooth preparation in different areas. The odontoscope is small in size, does not need to be held by a doctor, has the functions of amplification and illumination, can provide a clear visual field when the doctor operates, is beneficial to fine operation, and the working efficiency of the doctor can be improved.

The invention belongs to the field of materials, and particularly relates to a preparation method of a zirconia biological ceramic for oral cavity repair, wherein the raw materials comprise, by weight, 20-30 parts of zirconia, 10-15 parts of nanometer alumina, 10-15 parts of nanometer magnesium oxide, 10-15 parts of nanometer titanium oxide, 5-10 parts of nanometer zinc oxide, 5-10 parts of boronoxide, 5-10 parts of sodium titanate, and 5-10 parts of hydroxyapatite. According to the present invention, the prepared zirconia biological ceramic as the novel fine ceramic has advantages of good mechanical properties (fracture toughness, strength, hardness and the like), good biocompatibility, good stability, good aesthetic property, good thermal conductivity and good formability, can well solve the problem of insufficient strength and insufficient toughness of conventional all-ceramic crown materials, has mechanical properties comparable to metals, and can completely bear the chewing forceof posterior teeth.

Dental apparatus, systems, and methods for providing anterior, lateral, and vertical movement, an apparatus including a posterior portion to be affixed to and supported by a posterior dental structure of a patient; and an anterior portion connected to and separable from the posterior portion, the anterior portion operable to provide anterior movement, lateral movement, and vertical movement to an anterior dental structure of the patient.

The invention discloses a maxillary occlusal pad-lip shield appliance, which comprises a base plate arranged at the front part of a hard jaw, and the front end of the base plate is provided with a reverse slope guide plate or a hyperbolic reed; the pair of maxillary occlusal pads are respectively arranged on the two sides of the base plate, are respectively positioned at the back tooth retreat positions on the two sides of the maxillary, and are connected with the back teeth through retention devices; the pair of upper lip stoppers is connected to the base plate through connecting pieces and located at vestibular sulcus positions on the two sides of the upper jaw respectively. The orthodontic device disclosed by the invention is beneficial to prevention and blocking of mild bone class III and functional class III malocclusion of patients in a tooth replacement stage and a constant-pressure early stage, and the wearing comfort of the patients is remarkably improved while the orthodontic treatment effect is realized.