43 results about "Temporary crown" patented technology

A method for making a dental implant by obtaining images of the tooth pre-atraumatic tooth extraction and post extraction and using those images to computer generate and mill a titanium replacement implant employing CAD / CAM equipment. The implant includes a scalloped neck interface similar to the replaced tooth's scalloped cementoenamel junction, a polished neck area between a root portion and a crown portion, and the numeral for the tooth number imprinted on the implant's facial surface. Chevron retention fins are provided on the root portion for engaging the bone of the tooth socket or osteotomy when the implant is tapped into position. Retention grooves are provided on the crown portion to which a provisional crown is cemented slightly out of occlusion at the time the implant is placed. The provisional crown will be replaced with a permanent crown after osteointegration of the implant has occurred.

A dental implant apparatus consisting of an auger-like lower threaded portion that is screwed into the bone. It includes a divergent intermediate collar with mini-threads for engaging the cortical bone, and a tapered abutment for fixed tooth replacement or a ball-like snap attachment to secure removable dentures. The apical end of the device has a tapered portion with a blunt tip that condenses the medullar bone, which in combination with the divergent collar engaging and wedging into the cortical bone, provides a dual stabilization structure that can be immediately loaded or placed in light function by cementing on a temporary crown or bridge or by lightly attaching a removable full or partial denture.

It is intended to provide a molded article for dental use which is highly safe and free from the elution of bisphenol A with a fear of causing endocrine disruption and can fulfill the properties required in temporary crowns, denture bases, artificial teeth, orthodontic devices, etc. Namely, a molded article for dental use having a definite shape to be used in the oral cavity which is made of a copolymer polyester resin comprising a polyethylene terephthalate (PET) constitutional unit and a poly-1,4-dimethylene cyclohexane terephthalate (PCT) constitutional unit. Different from commonly employed PET, the above resin has been made amorphous by 1,4-cyclohexane dimethanol (CHDM) and therefore has a characteristic that a highly transparent molded article having excellent mechanical properties can be obtained therefrom by various molding methods (injection molding, compression molding and vacuum molding).

A digital abutment is provided to assist in taking digital impressions of a patient's mouth for design and manufacture of a prosthetic tooth. The digital abutment can receive a temporary crown so that the digital abutment can remain in place for preserving the gingival architecture while waiting for a final crown and a final abutment.

A multi functional implanting suite for an implant utilized in tooth reconstruction, artificial tooth implanting or dental restoration is disclosed. The implanting suite comprises a cap and a fastening member, in which it may be equipped with multi functions including healing abutment, scan jig, mold taking suite, temporary crown or UCLA abutment, so that the dental clinics may merely purchase one dental tool and then solve may tooth reconstruction, artificial tooth implanting or dental restoration situations.

The invention discloses a four-layer-color synthetic resin block and a preparation method thereof. The four-layer-color synthetic resin block is formed by four layers of structures sequentially, each layer of the structures comprise components as follows: polymethyl methacrylate, iron oxide red, iron oxide black, iron oxide yellow, titanium white, methyl methacrylate and ethylene glycol dimethacrylate. The preparation method comprises the steps as follows: polymethyl methacrylate powder is dried at a temperature of 80-90 degrees; four layers of materials are prepared in proportion respectively, and each layer of the materials are required to be mixed uniformly and kneaded until doughing time, so that a plastic dough material is formed; four layers of the plastic dough material are subjected to hot-pressing and bounded together in order in a die, the hot-pressing temperature is 110-130 DEG C, and the hot-pressing time is 10-20 min; and the four-layer-color synthetic resin block after hot-pressing is subjected to heat treatment at a temperature of 80-90 DEG C for 10-12 h, so that a four-layer-color synthetic resin block product is obtained. A dental model or temporary crown bridge, which is processed through the four-layer-color synthetic resin block, is natural and vivid in developing, and the preparation method is simple.

The invention relates in general to the fabrication of provisional or temporary crowns utilized to temporarily restore dental implants. The pre-fabricated provisional crowns are designed to specifically mate to the gingival portion of the abutment fixture of a dental implant or the collar of a dental implant. Therefore, the clinician can place the implant alone or in conjunction with a tooth extraction, and may select and place a pre-fabricated provisional crown for that particular implant system in the same appointment. The pre-fabricated provisional implant crown will generally comprise a hollow shell. The shell will be hollow in the interior aspect in order to accommodate implant prosthetic abutment systems.

A temporary or long-term provisional crown includes a shell having a top wall defining an occlusal surface, a buccal sidewall, a lingual sidewall, and opposite mesio-distal sidewalls, connected to the top wall and buccal and lingual sidewalls and spaced apart to define a central cavity to fit over a prepared tooth. A quantity of resin is disposed in the central cavity of the shell and is preferably shaped to conform to a prepared tooth. Two U-shaped windows arranged in one or both of the mesio-distal sidewalls permit resin to protrude mesio-distally from the cavity to contact an adjacent tooth. A window in the top wall extends mesio-distally to permit resin to extrude on to the occlusal surface. The occlusal window can be hourglass-shaped.

A method for making a temporary dental crown is disclosed. The temporary crown material that is used includes an astringent, which forms part of the material itself, to control bleeding in the gums of the patient whereby the steps involved in the procedure are simplified and minimal time is required to perform the procedure.

The invention relates to a design and production method of a precise bionic aesthetic prosthesis. The method comprises the following steps of (1) scanning teeth and adjacent teeth requiring aestheticrestoration; (2) designing the outer surface three-dimensional form of the aesthetic prosthesis by CAD software; printing the outer surface three-dimensional form into an aesthetic diagnosis model; (3) making a printing mold by using the model in the step (2); fully injecting tooth color temporary crown flowing resin; obtaining the aesthetic form identical to the CAD design; (4) after a patient confirms the aesthetic form, obtaining the outer surface data of the prosthesis through three-dimensional scanning; (5) performing three-dimensional scanning again after the quantitative tooth body preparation; obtaining the inner surface data of the prosthesis; (6) using the tooth or gum which is not subjected to tooth body preparation as a simultaneous region for registering the data on the innerand outer surfaces of the prosthesis onto the same coordinate system to complete the design; (7) performing 3D printing on the bionic color tooth preparation body substitutional form. The design and production method has the advantages that the individual bionic form and the color predictable performance of a porcelain aesthetic prosthesis can be improved; the precise realization of the existing aesthetic form is ensured.

A support (1) for non-definitively fixing a temporary crown (8) of one or several teeth to a pillar (3), which is in turn fixed on a dental implant (4) inserted into the bone structure of the patient, and which has additional means for clip retaining to said pillar (3) and mechanical retaining elements (9, 10, 11) preventing both the axial and rotational movement of the temporary dental crown (8), which complement the irremovable connection thereof by means of the bonding or sealing of said temporary dental crown (8).

The invention relates to a nanocomposite resin material, and particularly relates to a dental nano-filler composite resin temporary crown and bridge material and a preparation method thereof. The nano-filler composite resin comprises a body component and a catalyst component, and preferably, the composite resin temporary crown and bridge material is prepared by stirring the body component and the catalyst component according to the mass ratio of 1:1 in practical application. The nano-filler composite resin material is used for preparing a temporary crown and bridge clinically, is steady in the cured shape of a temporary restoration body, and has good color stability and polishing performance. Through the nano-filler with special functions, the wear resistance and strength of the composite resin temporary crown and bridge material can be improved.

The object of the invention relates to a dual function system for dental implants comprising a pier anchored to the implant through a retaining bolt and an attachment which can be used without distinction as a transfer element for taking an impression of the position of the implant or as a support for fixing a temporary prosthesis on said implant, wherein said attachment comprises axial retaining elements and radial retaining elements preventing its mobility when it is used both to take an impression and when it is used as a support of the temporary crown.

The invention belongs to the field of dentistry, and particularly relates to a dlp type 3d printing photocuring material for a clinical dental temporary crown, which takes nano organic-inorganic hybrid UV resin, high-strength aliphatic urethane acrylate, high-toughness aliphatic urethane acrylate and a free radical acrylate monomer diluent as main bodies and is matched with an inorganic silver antibacterial agent and a pigment, the dLp type 3D printing photocuring material for the clinical dental temporary crown is prepared from a 385nm wavelength free radical system composed of a photoinitiator, and the problems of poor material performance stability, poor size stability, poor toughness, poor mechanical property, medical risk and the like are effectively solved by using a special printingprocess and a post-treatment process.

The invention discloses a four-layer-color synthetic resin block and a preparation method thereof. The four-layer-color synthetic resin block is formed by four layers of structures sequentially, each layer of the structures comprise components as follows: polymethyl methacrylate, iron oxide red, iron oxide black, iron oxide yellow, titanium white, methyl methacrylate and ethylene glycol dimethacrylate. The preparation method comprises the steps as follows: polymethyl methacrylate powder is dried at a temperature of 80-90 degrees; four layers of materials are prepared in proportion respectively, and each layer of the materials are required to be mixed uniformly and kneaded until doughing time, so that a plastic dough material is formed; four layers of the plastic dough material are subjected to hot-pressing and bounded together in order in a die, the hot-pressing temperature is 110-130 DEG C, and the hot-pressing time is 10-20 min; and the four-layer-color synthetic resin block after hot-pressing is subjected to heat treatment at a temperature of 80-90 DEG C for 10-12 h, so that a four-layer-color synthetic resin block product is obtained. A dental model or temporary crown bridge, which is processed through the four-layer-color synthetic resin block, is natural and vivid in developing, and the preparation method is simple.

The invention relates to an impression method for accurately copying a gingival pattern. The method belongs of the field of oral implant restoration, and comprises the steps of directly using a formedtemporary denture as an impression column, directly manufacturing an artificial gingiva on the impression column, and after finishing model filling, taking down a temporary crown, disinfecting and wearing into a patient mouth. The method provided by the invention is simple without complicated and overloaded processes, the errors caused by repetitively copying the model for multiple times are avoided, the gingival pattern is accurately transferred, the problems of complicated and overloaded processes of an individualized impression column technology, easiness in producing error, and difficultyin operating multiple teeth are effectively solved, the processes are simple, and the errors are small; the problems that a common path of insertion cannot be obtained when the model is taken througha traditional mode, multiple division is required, and combined wear is complicated to operate and big in difficulty are avoided; under the conditions of saving time and a lot of material cost, an accurate impression effect can be obtained, and the method is simple to operate and easy to popularize.

The invention discloses a temporary crown and bridge repairing material. The temporary crown and bridge repairing material is prepared from the following raw materials in parts by mass: 100 parts of methyl methacrylate, 30-60 parts of composite inorganic filler, 0.01-1 part of initiator and 0.01-3 parts of toner, the composite inorganic filler is selected from at least two of zero-dimensional inorganic filler, one-dimensional inorganic filler, two-dimensional inorganic filler and three-dimensional inorganic filler. By adopting the composite inorganic filler, the polymerization inhibition of the filler can be reduced, the filling amount of the filler is increased, the mechanical property of the temporary crown and bridge repair material is improved through the synergistic effect of the fillers with different dimensions, and the product repair material has high bending strength and hardness and low water absorption value and dissolution value.

An intra-procedure dental implant stabilization and healing system that includes a soft tissue forming scanning abutment and associated, temporary crown. After initial implant placement, a scanning abutment of the present system is attached to the implant and serves, both as a scanning body and, in combination with a temporary crown attached thereto, as a healing cap. Use of the system obviates an additional surgical incision to reach recipient osseointegrated implant, as is required in conventional implant procedures, as well as the need for a conventional impression coping, separate healing cap, temporary abutment and temporary crown.

The invention discloses a dental restoration material for temporary crowns and bridges and a preparation method thereof, and the preparation method comprises the following steps: mixing preparation raw materials comprising methyl methacrylate, an inorganic filler, an initiator and a toner to prepare a mixture, injecting the mixture into a mold, and carrying out warm isostatic pressing curing molding to prepare the dental restoration material for temporary crowns and bridges. By adding the inorganic filler, the mechanical property of the dental restoration material can be enhanced, and by adopting a warm isostatic pressing curing molding mode, the curing molding time can be remarkably shortened, the production time cost can be reduced, the production efficiency can be improved, and the mechanical property of the product material can be further improved; further, the prepared dental restoration material has high strength, high modulus and high surface hardness.

A set or assembly for producing at least one temporary crown or bridge material has a carrier for accommodating a crown and bridge material and a crown and bridge material in an amount that is at least sufficient for the production of a tooth crown. The crown and bridge material is a light-curing and, in particular, flowable single-component material, and the carrier that can be adapted to the tooth situation is transparent or translucent. In another aspect, a method for producing a temporary tooth crown or bridge and a temporary tooth crown or bridge produced by the method are also provided.

The invention provides a photo-thermal curing resin composition and a preparation method and application thereof. The resin composition comprises a combination of a prepolymer, a monomer, a photoinitiator, a thermal initiator, fumed silica and glass powder in specific parts, the photoinitiator in specific parts is added to be matched with the thermal initiator, the completion rate of a curing reaction is increased, the resin composition is more sufficiently cured, and the monomer residual rate after curing is lower. Specific parts of fumed silica and barium-containing glass powder are also added as fillers, so that the hardness, strength and wear resistance of the resin composition are effectively enhanced, and a product obtained by performing 3D printing on the finally obtained resin composition completely meets the requirements of serving as a temporary crown bridge.

The invention relates to a manufacturing method of cast porcelain dental veneer, comprising the following steps: constructing a diagnostic model by digital three-dimensional technology, and making the diagnostic model by means of three-dimensional printing; making a diagnostic model for a patient based on the diagnostic model using a temporary crown material Veneering; on the basis of the diagnostic veneer, perform tooth preparation, impression taking, and superhard plaster filling of the patient to obtain a working model, and perform three-dimensional scanning and centric occlusal registration on the working model; the work after tooth preparation The spatial registration of the model and the diagnostic model is carried out so that the two models are completely consistent in the posterior region, and the edge line of each preparation is constructed in the difference area of ​​the anterior labial surface by using the NURBs curve; The veneer is directly used for lost-wax casting to obtain a veneer made of cast porcelain material. The cast porcelain tooth veneer made by the invention achieves the unity of appearance and function after restoration.

This invention relates to methods for evaluating caries, remineralization, demineralization, and / or erosion in occlusal surfaces of the teeth such as the pits and fissures. Specifically, the present invention relates to an intra oral method of evaluating caries on occlusal surfaces, comprising: a. preparing a dental specimen having at least one closed ended trough; b. preparing a temporary crown or artificial tooth having a well on the occlusal surface; c. placing the dental specimen into the well wherein the trough opening of the dental specimen is facing outward; d. seating the temporary crown or artificial tooth in the oral cavity of the test subject; e. exposing the oral cavity of the test subject to test conditions; f. measuring the degree of caries efficacy on the dental specimen. The methods described herein are especially useful for determining the anticaries efficacy for oral care compositions such as solid, chewable unit dosage forms.

The invention relates to a cast porcelain tooth veneer production method which comprises the following steps of: constructing a diagnosis model by a digital three-dimensional technology, and producingthe diagnosis model in a three-dimensional printing manner; based on the diagnosis model, producing a diagnosis finish for a patient by utilizing a temporary crown material; carrying out tooth preparation, impression taking and die stone cast pouring on the patient to obtain a working model on the basis of the diagnosis finish, and carrying out three-dimensional scanning and centric occlusion registration on the working model; carrying out space registration on the working model after tooth preparation and the diagnosis model so as to enable two models to be completely fit in a back tooth region, and constructing an edge line of each preparation body in a differential region of a front tooth lip surface by utilizing an NURBs curve; obtaining a veneer in a three-dimensional printing manner; and carrying out dewaxing casting directly by utilizing the veneer so as to obtain a cast porcelain material veneer. The cast porcelain tooth veneer produced by the invention achieves unification ofaesthetics and functionality after repair.

The invention provides a composition for preparing dental temporary crown bridge. The composition is prepared from a matrix component and a catalytic component, wherein the matrix component is prepared from 40-60 parts by weight of acrylate monomer, 1-10 parts by weight of organosilicon modified acrylate, 0.5-1 part by weight of self-curing accelerator and 40-50 parts by weight of filler; the catalytic component is prepared from 40-60 parts by weight of acrylate monomer, 1-10 parts by weight of organosilicon modified acrylate, 1-2 parts by weight of self-curing initiator and 40-50 parts by weight of filler. The composition for preparing the dental temporary crown bridge is prepared by means of cooperation of the acrylate monomer and the organosilicon modified acrylate and in combination ofa self-curing reaction of the curing accelerator, the filter and the curing initiator. The composition for preparing the dental temporary crown bridge is rapid in curing speed, high in strength and good in toughness, and also has the characteristic of being low in oxygen inhibition layer.

The invention discloses a manufacturing method of a temporary pile crown in an anterior tooth residual root state and the temporary pile crown, and relates to the technical field of dental restoration, the temporary pile crown comprises a temporary pile and the temporary crown, the first end of the temporary pile is matched with a residual root pipe, and the second end of the temporary pile is located in the temporary crown; the second end of the temporary pile is integrally fixed when the temporary crown is formed; the temporary pile crown manufacturing method comprises the steps that the first end of a small rod is cut into a pile matched with a residual root pipe, the pile of the small rod is inserted into the residual root pipe, and the second end of the small rod is exposed out of the outer side of the section of a residual root to serve as a pile core; the temporary crown material is driven into a duplicating impression, wherein the pile core is positioned in the temporary crown material; and after solidification, the formed temporary crown with the temporary pile core is taken out, the edge of the temporary crown is polished and trimmed, and the temporary pile crown is formed. Not only is the problem of attractiveness of teeth of a patient during personalized pile processing solved, but also the time of the patient is saved, and the temporary pile further enhances the retention force, so that the temporary crown is not easy to fall off.

The invention relates to the technical field of dental restoration, and discloses a full-digital restoration method of an oral zirconia crown, which comprises the following steps: pre-scanning teeth to obtain an original form; carrying out prosthesis design through Exocad dental design software; cutting a temporary resin crown on a lathe according to a design file; adjusting the design draft according to the clinical try-on result of the temporary crown, or re-scanning the temporary crown after clinical adjustment, and updating the design draft; and according to the final design file, manufacturing a final restoration through a 3D colloidal deposition process. Through the clinical verification effect of the temporary crown, the clinical zero grinding of the final prosthesis can be realized. The method is novel in design and simple in process, and has the advantages of high digitization degree, short time consumption and high efficiency.