22 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.

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.

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 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.

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 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 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.

An orthodontic appliance system for orthodontic treatment of teeth. The system includes a template with a cavity. The accessory is removably received in the receiving portion and has a surface including an adhesive surface. A method of manufacture includes constructing a bracket assembly including a base and placing a template in contact with the bracket assembly. The method includes inserting the accessory into the receptacle. During detachment, the attachment remains coupled with the template in the receptacle. A method of manufacture includes providing a mold for a patient's teeth. The mold includes at least one protrusion and a through channel. The method includes placing a container of dental composite material in fluid communication with the through-channel, placing a template on the at least one protrusion, injecting the dental composite material from the container through the through-channel into the receptacle, and removing the template from the at least one protrusion having the filled receptacle.

The invention relates to a process of warming a dental composite material, the process comprising the steps of inserting an application device having the shape of a syringe into an opening of a heating device, the application device comprising a compartment having a proximal end, a distal end, an inner surface, an inner diameter and an axial length Lc, a piston assembly with a proximal end and a distal end, the piston assembly being moveably located in the compartment, a dispensing section with a nozzle located at the distal end of the compartment having an opening less than 3 mm in diameter, the dispensing section being an integral part of the application device, a backplate section located at the proximal end of the compartment, a pressure plate located at the proximal end of the piston assembly, the dental composite material being located in the compartment of the application device, the dental composite material having a viscosity in the range of 5 to 20 kPa*s at 5 23°C, the heating device comprising a housing with an opening for receiving the application device, a heating element, a temperature sensor, a controller, warming the dental composite material located in the compartment of the application device up to a temperature not higher than 70°C.

The utility model relates to the field of auxiliary instrument, concretely relates to a dental composite robot, including AGV chassis, the AGV chassis top surface is installed with the connecting casing, the connecting casing top surface one side is installed with the collaborative mechanical arm, be equipped with the material box buffer area and porcelain dish buffer area on the connecting casing, the movable end of collaborative mechanical arm is installed with servo electric claw and 3D camera, collaborative mechanical arm, servo electric claw, 3D camera are electrically connected with control system. The utility model discloses through control AGV chassis moves to the corresponding position, can realize the feeding of material and the transfer of material, has brought great convenience on actual operation.