34 results about "Dental composite" patented technology

The utility model provides a syringe for dispensing dental composite material, including syringe and push cap. Syringe inside is equipped with plunger, and plunger is screwed into the inside of injection cavity through thread cooperation. Push cap is located in the inside of injection cavity, is equipped with force chamber and push surface on push cap, and is connected with the limiting piece on the syringe to prevent push cap from being pushed out. The limiting piece is sleeved with the cap. The plunger is screwed into the syringe from one end, and then is pushed into the push cap and screwed into the limiting piece from the other end, and the push cap covers the top end of the plunger. The composite material is loaded into the syringe through the channel opening in the limiting piece, and after loading is completed, the cap is sleeved on the limiting piece. The limiting piece structure of the utility model can effectively prevent the push cap from being pushed out, and through the thread cooperation between the plunger and the inner wall of the syringe, the syringe can realize accurate material dispensing.

The utility model provides an automatic buckling type dental composite bonding abutment which comprises an abutment main body, an inner base, an inner buckling frame, a spring, an inner buckling bead and a composite abutment, the inner buckling beads and the inner buckling frame are assembled to form an inner buckling piece, the inner buckling piece is installed in the inner base, and the inner buckling frame is matched with the top of the inner base through the spring; the abutment main body is arranged outside the inner base, the abutment main body and the inner base are connected through threads to form a bonded whole, and the lower end face of the abutment main body is flush with the lower end face of the inner base; an annular groove is formed in the top of the composite base table, the composite base table penetrates through the inner base, and the annular groove is matched with the inner buckling bead, so that connection between the composite base table and the bonding whole is achieved. According to the utility model, the traditional mode of needing polishing and trepanning is changed through the attraction of the magnetic poles, the treatment process is optimized, the sealant curing time is shortened, and the abutment after the dental crown is adhered can be fixed on the composite abutment only by pressing.

To provide a dental composite resin kit which can reproduce a wide range of shades with a relatively small number of dental composite resins used in combination when performing aesthetic filling and restoration on teeth of various shades. To provide a dental composite resin kit including at least a first dental composite resin and a second dental composite resin, wherein a contrast ratio of a cured body measured at a thickness of 1 mm of the first dental composite resin is 0.3 to 0.75, a contrast ratio of a cured body measured at a thickness of 1 mm of the second dental composite resin is 0.3 to 0.75, a difference in contrast ratio of a cured body between the first dental composite resin and the second dental composite resin is 0.3 or less, and when it is defined that (L1*, a1*, b1*) is a value of a color tone in a cured body having a thickness of 1 mm of the first dental composite resin in the L*a*b* space measured in the white background and (L2*, a2*, b2*) is a value of a color tone in a cured body having a thickness of 1 mm of the second dental composite resin in the L*a*b* space measured in the white background, the color difference ΔE expressed by the following formula (1) is 2 or more. ΔE=L1*−L2*2+a1*−a2*2+b1*−b2*212

The present invention provides novel tools and methods for improving load transfer in dental isotropic particulate reinforced composites. By creating textured composite interfaces during chairside composite lamination or layering, the load transfer in hand sculpted and 3D printed composites can be significantly enhanced without the need for embedding fibers or reinforcing elements. This leads to improved stress transfer, load-bearing capacity, and reduced shrinkage stress in dental composites. The invention also has applications in structural composite materials technology, aerospace engineering, and resin SLA 3D printing, allowing the mechanical properties and response of the composite to be easily enhanced or tailored.

The present invention provides a dental composite resin kit capable of performing aesthetic filling repair on teeth of various hues, having a small number of combined dental composite resins, and being capable of reproducing a wide range of hues. A dental composite resin kit in which at least a first dental composite resin and a second dental composite resin are packaged together, the difference between the contrast of the first dental composite resin and the contrast of the second dental composite resin being 0.3 or less when the contrast of a cured body having a thickness of 1 mm is measured, and the contrast is 0.3-0.75, respectively, and the contrast of the first dental composite resin and the contrast of the second dental composite resin being 0.3 or less when the contrast of the cured body having a thickness of 1 mm is measured. The value obtained by measuring the color tone in the L * a * b * space of a cured body of the first dental composite resin having a thickness of 1 mm in a white background is (L1 *, a1 *, b1 *), the value obtained by measuring the color tone in the L * a * b * space of a cured body of the second dental composite resin having a thickness of 1 mm in a white background is (L2 *, a2 *, b2 *), and the color difference [Delta] E represented by formula (1) is 2 or more: [Delta] E = {(L1 *-L2 *) 2 + (a1 *-a2 *) 2 + (b1 *-b2 *) 2} 1 / 2.

A composite material including silanated filler and mixed polymerizable monomer, having a stable pasty property which keeps well and has a consistent usability. A composite material containing a silanated filler, a polymerizable monomer, and a polymerization initiator, and may be produced by a process which includes a mixed polymerizable monomer preparing step, a silanation step, a silanated filler preserving step, a composite material preparing step, a composite material preserving step, a composite material filling step, and a small quantity preserving container preserving step.

The invention relates to the field of auxiliary instruments, in particular to a dental composite robot which comprises an AGV chassis, a connecting shell is mounted on the top surface of the AGV chassis, a cooperative mechanical arm is mounted on one side of the top surface of the connecting shell, and a material box cache region and a porcelain dish cache region are arranged on the connecting shell; a servo electric claw and a 3D camera are installed at the movable end of the cooperative mechanical arm, and the cooperative mechanical arm, the servo electric claw and the 3D camera are electrically connected with a control system. By controlling the AGV chassis to move to the corresponding position, feeding and transferring of materials can be achieved, and great convenience is brought to actual operation.

The embodiment of the invention provides a method for generating a three-dimensional tooth-jaw composite model, which comprises the following steps: acquiring an initial three-dimensional tooth-jaw composite model, the initial three-dimensional tooth-jaw composite model comprising an upper jaw tooth virtual model, an upper jaw bone virtual model, a lower jaw tooth virtual model and a lower jaw bone virtual model; under the condition that the relative pose relation of the maxillary virtual model and the mandibular virtual model is kept unchanged, teeth in the maxillary tooth virtual model and the mandibular tooth virtual model are subjected to decompensation alignment to obtain a preoperative three-dimensional tooth-jaw composite model; obtaining relative poses of a tooth model and a corresponding bone block model in the preoperative three-dimensional tooth-jaw composite model and a jaw correction treatment demand; under the condition that the relative poses of the tooth model and the corresponding bone block model in the preoperative three-dimensional tooth jaw composite model are kept unchanged, the poses of all the bone block models in the preoperative three-dimensional tooth jaw composite model are adjusted according to the orthognathic treatment requirement, and a postoperative three-dimensional tooth jaw composite model is obtained.

The invention discloses a dental composite ceramic material and a preparation method thereof, and relates to the technical field of dental ceramic materials. The method comprises the following steps: preparing silicon-lithium-aluminum-based glass powder by adopting a melting method; sintering commercial zirconium oxide to obtain compact zirconium oxide; and spraying the glass powder on the surface of the compact zirconium oxide to prepare the dental composite ceramic material. According to the method, Li2CO3 serves as an active agent, P2O5 serves as a nucleating agent, silicon-lithium-aluminum-based glass is prepared, then the roasting process is controlled, and a glass glaze layer is successfully roasted on the surface of compactly sintered zirconia. The dental zirconia ceramic has the high-strength bonding performance of the glaze layer and zirconia and the excellent mechanical property of the glaze layer, and the problems that an existing dental zirconia ceramic glaze layer is prone to cracking and stripping and insufficient in glaze layer strength are solved.

The present invention relates to dental, light-curable, one-component composite compositions comprising (A) monomers, (B) fillers, and (C) initiators, the viscosity η20 of which at 20° C. is greater than 400 Pa*s, preferably greater than 800 Pa*s and more preferably greater than 1200 Pa*s, and the viscosity η50 of which at 50° C. is less than 150 Pa*s, preferably less than 120 Pa*s and more preferably less than 90 Pa*s, and wherein the quotient η50 / η20 of the viscosity of the composite composition at 50° C. and the viscosity of the composite composition at 20° C. is less than 0.125, preferably less than 0.1. The invention is preferably directed to dental composite compositions selected from the group consisting of dental filling materials, lining materials, luting materials and fissure sealants.

To provide a dental composite resin kit which can reproduce a wide range of shades with a relatively small number of dental composite resins used in combination when performing aesthetic filling and restoration on teeth of various shades. To provide a dental composite resin kit including at least a first dental composite resin and a second dental composite resin, wherein a contrast ratio of a cured body measured at a thickness of 1 mm of the first dental composite resin is 0.3 to 0.75, a contrast ratio of a cured body measured at a thickness of 1 mm of the second dental composite resin is 0.3 to 0.75, a difference in contrast ratio of a cured body between the first dental composite resin and the second dental composite resin is 0.3 or less, and when it is defined that (L1*, a1*, b1*) is a value of a color tone in a cured body having a thickness of 1 mm of the first dental composite resin in the L*a*b* space measured in the white background and (L2*, a2*, b2*) is a value of a color tone in a cured body having a thickness of 1 mm of the second dental composite resin in the L*a*b* space measured in the white background, the color difference ΔE expressed by the following formula (1) is 2 or more. ΔE=L1*−L2*2+a1*−a2*2+b1*−b2*212

To provide a dental composite resin kit in which the number of dental composite resins to be used together is relatively small and a wide range of color tones can be reproduced when aesthetic filling restoration is performed to teeth of various color tones.SOLUTION: The first and second dental composite resins have a difference in contrast ratio of 0.3 or less, each of the contrast ratios of 0.3 to 0.75, and a color difference Δ E of 2 or more, when the contrast ratios of the cured bodies at the 1mm of the thickness are measured.SELECTED DRAWING: None

To provide a dental composite resin kit which can reproduce a wide range of shades with a relatively small number of dental composite resins used in combination when performing aesthetic filling and restoration on teeth of various shades.To provide a dental composite resin kit including at least a first dental composite resin and a second dental composite resin, whereina contrast ratio of a cured body measured at a thickness of 1 mm of the first dental composite resin is 0.3 to 0.75,a contrast ratio of a cured body measured at a thickness of 1 mm of the second dental composite resin is 0.3 to 0.75,a difference in contrast ratio of a cured body between the first dental composite resin and the second dental composite resin is 0.3 or less, andwhen it is defined that (L1*, a1*, b1*) is a value of a color tone in a cured body having a thickness of 1 mm of the first dental composite resin in the L*a*b* space measured in the white background and (L2*, a2*, b2*) is a value of a color tone in a cured body having a thickness of 1 mm of the second dental composite resin in the L*a*b* space measured in the white background,the color difference ΔE expressed by the following formula (1) is 2 or more.Δ⁢E={(L1*-L2*)2+(a1*-a2*)2+(b1*-b2*)2}1 / 2Formula⁢ (1)

Disclosed herein is a dental composite with controlled debonding capability using heat and electric field. The dental composite includes a resin matrix phase, inorganic fillers, thermo-electric responsive agents, an initiator system, and coupling agents. The resin matrix phase includes an amount of bisphenol A-glycidyl methacrylate (Bis-GMA), an amount of triethylene glycol dimethacrylate (TEGDMA), and an amount of polyethylene glycol dimethacrylate (PEGDMA). The inorganic fillers include an amount of silane-modified silica particles and an amount of barium titanate (BaTiO₃). Thermo-electric responsive agents include an amount of doped polyaniline and an amount of polypyrrole. The initiator system includes an amount of benzoyl peroxide and an amount of camphorquinone. The coupling agents include an amount of γ- Methacryloxypropyltrimethoxysilane.

A composition has a porous framework containing a resilient oxide and one or more releasable ions. The resilient oxide may be a silicon-oxide or a silicon-phosphorous- oxide. The pores of the framework may be loaded with a biologically active agent. The biologically active agent may be an amphiphilic templating molecule used to form the pores of the framework. The composition may be dispersed in a resin, for example a dental composite or restorative resin. A method of making the composition includes preparing a solution of the biologically active agent so as to form micelles, adding a metal oxide forming compound, and adding an optionally excess amount of a non-metal oxide forming compound and / or one or more metal salts. In a dental application, the active agent may be antimicrobial and the releasable ions may support tooth remineralization.

A dental composite placement protocol provides a flowable composite as the dentin replacement on the pulpal floor and gingival box and then cures the flowable composite. A first increment layer of paste-type composite resin is placed against the cured flowable composite whereby it fully encapsulates the preparation walls including the circumference of the cavosurface enamel margin, including the interproximal enamel, axial wall dentin, and matrix band. A stress relieving space is positioned in the middle of the preparation walls and the first increment layer, configured for allowing the composite to flow without constraint during curing. The first increment layer is cured. A final increment layer of paste-type composite resin is placed in the remaining space against the light-cured flowable composite and against the light-cured first increment wherein the final increment layer is placed against cured composite an not against tooth substrates; and the final increment layer is cured.

Radically polymerizable material, which contains (a) 0.01 to 5 wt.-% of at least one transfer reagent, (b) 5 to 60 wt.-% of at least one multifunctional (meth)acrylate or a mixture of mono- and multifunctional (meth)acrylates, (c) 0.01 to 3.0 wt.-% of a mixture of at least one monomolecular and at least one bimolecular photoinitiator, (d) 30 to 90 wt.-% of at least one filler, and (e) optionally additive(s), wherein the material contains as transfer reagent (a) at least one allyl sulfone of Formula I and / or a vinyl sulfone ester of Formula II.

The invention relates to a polymerisable dental composite material comprising(i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal oxide,(ii) 10 to 60% by weight of at least one urethane (alkyl) acrylate of the idealised formula I,(iii) 0.01 to 15% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane (alkyl) acrylate,(iv) 0.01 to 10% by weight of at least one initiator, of an initiator system, as well as optionally of at least one stabiliser, and optionally of at least one pigment, the total composition of the composite material amounting to 100% by weight, as well as to a polymerised composite material for producing direct dental restorations or indirect dental restorations.

The present invention relates to a composition for preventing or treating periodontal disease and a dental composite antibiotic ointment composition. The composition for preventing or treating periodontal disease according to the present invention comprises minocycline and metronidazole as effective ingredients.

A composition having a porous amorphous framework containing silica and one or more metal oxide, in particular zirconia or titania or alumina. The pores of the framework are templated on micelles of one or more ionic or non-ionic surfactants. The framework may be templated by using an antimicrobial amphiphilic active agent such as octenidine or cetylpyridinium which will thereby be loaded in the pores of the porous framework. The framework may form a whole particle or a shell onto a particle. A composite material may be formed by dispersing the particles comprising the composition in a matrix material, such as a dental composite or restorative resin. A method of making the composition by way of a sol-gel technique which includes mixing an acid, water and one or more oxide precursors is also disclosed; the acid is preferably an organic and / or chelating acid such as acetic acid.

Described herein is a dental composition containing a polymerizable compound having at least one optionally derivatized β-hydroxy urethane unit. The polymerizable compound having at least one optionally derivatized β-hydroxy urethane unit is obtained without use of organo-metal catalysts and isocyanates and by a reaction between an at least one component A having at least one cyclic carbonate group with an at least one component B having at least one of primary amine functional group and secondary amine functional group. The present disclosure relates to use of the polymerizable compound having at least one optionally derivatized β-hydroxy urethane unit for the preparation of a dental composition, in particular a dental composite, a glass ionomer, a dental cement, a dental sealant, and a dental adhesive.

Thermally polymerizable dental composite material, encompassing as (i) inorganic filler component (i.1) 70 to 84 wt.% of at least one dental glass, and optionally (i.2) 1 to 6 wt.% of at least one amorphous, silanized metal oxide of a primary particle size of 2 to 45 nm, and wherein the dental glass has a mean particle size d 50 exhibits dimensions of 0.7 to 1.0 µm, (ii) 10 to 30 wt% of a mixture of at least two different urethane(meth)acrylates, the mixture comprising at least one difunctional urethane(meth)acrylate with a bivalent alicyclic group comprising bis-(4',7'-dioxa-3', 8'-dioxo-2'-aza-decyl-9'-ene)tetrahydrodicyclopentadiene, bis-(4',7'-dioxa-3',8'-dioxo-2'-aza-9'-methyl-decyl-9'-ene)tetrahydrodicyclopentadiene and / or mixtures thereof and at least one at least tetrafunctional dendritic urethane(meth)acrylate, (iii) 0.01 to 5 wt% of at least one di-, tri-, tetra- or multi-functional monomer that is not a urethane (meth)acrylate, (iv) 0.01 to 10 wt% of at least one initiator and at least one stabilizer, wherein the total composition of the composite material is 100 wt%.

The invention relates to the technical field of composite materials for dental restoration, in particular to a high-performance wear-resistant reinforced dental composite restoration material and a preparation method thereof. The invention relates to a high-performance wear-resistant reinforced dental composite repair material, which is prepared from the following raw materials in parts by mass: 45 to 55 parts of resin, 30 to 35 parts of modified wear-resistant filler, 5 to 8 parts of modified glass fiber, 6 to 8 parts of hydroxy calcium phosphate, 0.5 to 0.8 part of antibacterial agent, 0.8 to 1.2 parts of coupling agent, 0.01 to 0.02 part of coloring agent and 0.1 to 0.2 part of antioxidant, comprising the following raw materials in parts by weight: 25-35 parts of epoxy resin, 60-75 parts of methacrylic acid compound and 1-1.5 parts of curing agent. The high-performance wear-resistant reinforced dental composite repair material has remarkable advantages in the aspects of mechanical property, antibacterial property, biocompatibility, application range and the like, and is expected to be widely applied to the field of dentistry.

The application discloses a kind of dental composite ceramic materials and preparation method, it is related to dental ceramic material technical field, the preparation method includes the following steps: zirconium oxide powder is mixed with ethyl silicate solution, and then is dried and pressed into block and high-temperature sintering, obtain dense zirconium oxide;Lithium-based glass powder is used to high-temperature permeation to the zirconium oxide, and then is carried out two-stage heat treatment, so that the lithium silicate glass that remains in the surface of zirconium oxide and penetrates into surface layer is crystallized to form lithium disilicate crystal, obtain dental composite ceramic material.The dental composite ceramic material of the application has excellent mechanical properties of zirconia ceramic and good optical properties of lithium disilicate glass ceramic simultaneously, compared with the weak binding force at interface of traditional zirconia-ceramic veneer double-layer structure and the low strength of ceramic veneer, the wide range of composite is formed between zirconia and lithium disilicate glass ceramic in this material, there is no interface, and the binding force is higher, it is a new type of dental ceramic material with great application potential.

The invention relates to a two-part dual cure dental composition with improved stability toward discoloration and premature polymerization. The dental composition comprises a Base Part and a Catalyst Part, the Base Part comprising polymerizable component(s) without an acidic moiety, optionally polymerizable component(s) with an acidic moiety, filler(s), transition metal component(s), peroxide component(s), stabilizer component(s) comprising a free-radical moiety, the Catalyst Part comprising polymerizable component(s) without an acidic moiety, filler(s), ascorbic acid component, photo-initiator system, stabilizer component(s) comprising a phosphite or sulfite moiety. The dental composition is in particular useful as bulk fill dental composite, dental resin cement, core build-up dental material or self- and dual cure dental adhesive. The invention further relates to an initiator system and the use of a stabilizer comprising a free-radical moiety.

The embodiment of the invention provides a method for generating a preoperative orthodontic target model. The method comprises the following steps: acquiring an initial three-dimensional dental composite model; obtaining relative poses of a tooth model and a corresponding bone block model in the initial three-dimensional dental composite model and a orthognathic treatment demand; under the condition that the relative poses of the tooth model and the corresponding bone block model in the initial three-dimensional tooth jaw composite model are kept unchanged, the poses of all the bone block models in the initial three-dimensional tooth jaw composite model are adjusted according to the orthognathic treatment requirement, and a postoperative three-dimensional tooth jaw composite model is obtained; under the condition that the relative pose relation of each bone block model in the postoperative three-dimensional tooth jaw composite model is kept unchanged, respectively aligning upper and lower jaw teeth in the postoperative three-dimensional tooth jaw composite model to obtain a postoperative orthodontic tooth jaw composite model; under the condition that the relative poses of the bone block models in the initial three-dimensional dental composite model are kept unchanged, the poses of tooth models in the initial three-dimensional dental composite model are adjusted, and a preoperative orthodontic target model is obtained.

The present invention relates to a composition for the prevention or treatment of periodontal disease and a dental composite antibiotic ointment composition. The composition for the prevention or treatment of periodontal disease according to the present invention comprises minocycline and metronidazole as active ingredients.

The present application relates to a kind of dental resin composition and its application and general type dental composite material, by percentage by weight, dental resin composition includes 20~70 wt% cyclic carbonate modified polymerizable monomer, 20~75 wt% dental resin comonomer, 0.1~5.0 wt% photoinitiator system and 0~5.0 wt% auxiliary agent.Cyclic carbonate modified polymerizable monomer general formula is [CH2=C (R1) -C (=O) -O-L] m-X. Wherein, R1 is hydrogen atom or methyl, L is divalent organic connecting group, m is 1 or 2.Divalent organic connecting group is C1~C 12 Alkylene, polyether segment containing 1~20 ether bond, segment containing urethane bond, or be the combination of polyether segment containing 1~20 ether bond and segment containing urethane bond.The dental resin composition of the present application can be well compatible with the existing photocuring system, and has good relative hydrolysis stability, biological safety and resin-filler interface compatibility.