101 results about "Dental use" patented technology

A diagnostic imaging apparatus of hand piece type suitable for medical or dental use, comprising a main body held by operator's fingers, a luminous means for irradiating at least one of lights selected from excitation light, infrared light and ultraviolet light, and an imaging means provided in a forward portion of the main body. The imaging means comprises a solid-state image sensing device and an optical means for forming an optical image of a diagnosis object to be examined on the solid-state image sensing device and is so constructed as to output a predetermined diagnostic image information by receiving the light reflected from the diagnosis object and / or the fluorescence generated from the diagnosis object when irradiation of light from the luminous means to the diagnosis object is performed.

According to the present invention, there are disclosed a radical polymerization catalyst comprising an aryl borate compound, an acidic compound and a +tetravalent and / or +pentavalent vanadium compound; and a curable composition, a dental composition, a dental adhesive, a dental pretreatment agent, a dental adhesive kit, etc. all containing the radical polymerization catalyst.

Disclosed are a method and apparatus for controlling the injection rate of an anesthetic solution in a cartridge type motor-driven injection syringe for dental use, particularly beginning with the “Low” rate injection at the outset, and switching to the “Medium” or “High” injection rate at an arbitrarily selected time in the course of injection. The speed of revolution of the electric motor is changed among the low, medium and high speed, and a two-step operable type of switch is used as a starter switch 13. The first depression of the starter switch makes the electric motor 9 start at the low speed, thereby making the plunger rubber 5 initially move at the “Low Speed” in the cartridge 6 via the plunger rod 12, and the second depression of the switch makes the electric motor 9 run at the low, medium or high speed, and accordingly the plunger rod moves at the selected “Low Speed”, “Medium Speed” or “High Speed”.

Novel hand-held single or two-component viscous fluid material dispensing gun, particularly though not exclusively useful for dental use and the like, and using in-line longitudinal drive racks and fluid cartridge containers, the racks being driven longitudinally along a barrel by an electric motor that is preferably mounted and controlled in the handle transversely depending below the barrel.

Provided is a soft flexible oral appliance having protuberances that mimic naturally occurring dental Tori. An upper, palatial appliance and a lower, mandibular appliance may be used in conjunction or separately to alleviate a variety of disorders, improve facial tone, and increase physical performance. The appliances are lightweight, thin, and do not prohibit normal speech patterns when in use. Small protuberances are strategically molded along key surfaces of each appliance to stimulate nerves in the tongue and affect forward protrusion. Forward positioning of the tongue dilates the airways of the throat improving breathing while the use is sleeping, playing sports, or talking. It also reduces bruxing, or grinding of the teeth. A method is further provided, for adding protuberances to other types of oral appliances, thereby conferring some of the benefits listed above on appliances originally intended for other dental uses.

A diagnostic imaging apparatus of hand piece type suitable for medical or dental use, comprising a main body held by operator's fingers, a luminous means for irradiating at least one of lights selected from excitation light, infrared light and ultraviolet light, and an imaging means provided in a forward portion of the main body. The imaging means comprises a solid-state image sensing device and an optical means for forming an optical image of a diagnosis object to be examined on the solid-state image sensing device and is so constructed as to output a predetermined diagnostic image information by receiving the light reflected from the diagnosis object and / or the fluorescence generated from the diagnosis object when irradiation of light from the luminous means to the diagnosis object is performed.

A cationically curable composition for dental use containing a cationic polymerization initiator (I) and cationically polymerizable monomers (II), the cationically polymerizable monomers (II) containing an oxetane compound and an epoxy compound or an alkenyl ether compound at a ratio of amounts that satisfy the conditions expressed by the following formula, (a×A):(b×B)=91:9 to 45:55 wherein A is a mol number of the oxetane compound, “a” is an average number of the oxetane functional group contained in one molecule of the oxetane compound, B is a mol number of the epoxy compound or the alkenyl ether compound, and “b” is an average number of the epoxy functional group contained in one molecule of the epoxy compound or an average number of the alkenyl ether functional group contained in one molecule of the alkenyl ether compound. The composition is not hindered by oxygen from being polymerized, cures quickly even without using a special polymerizable monomer or a particular polymerization initiator, little forms an unpolymerized layer on the surface even when polymerized and cured in a highly humid environment such as in the oral cavity, and is suited as a filling / restorative material for dental use.

Provided is an intraoral inspection apparatus for dental use capable of distinguishing and detecting more kinds of diseased sites etc. with one apparatus. The apparatus comprises: a light source unit provided with color-producing light sources capable of inducing fluorescent lights from diseased sites; a wavelength adjusting device provided with a first filter that transmits, among the fluorescent lights, a light having a wavelength of a fluorescent light from a predetermined diseased site and blocks or attenuates a light having a wavelength other than this, and provided with a second filter that transmits, among the fluorescent lights, a light having a wavelength of a fluorescent light from a diseased site different therefrom and blocks or attenuates a light having a wavelength other than this; and an imaging device which receives the fluorescent lights transmitted through the first filter and the second filter, and converts them into electrical signals.

A blower for dental use, which comprises a support structure (1), an air source and a handpiece (28). Said handpiece is connected to a pipe (14) supplying air to be blown in, which is produced by the air source, and a blowing nozzle (13) for the air received from the supply pipe (14).The blower 10 also comprises means (12) for heating the air to be blown in, which means are mounted within the handpiece (28) so as to heat the air received from the supply pipe (14) and release it, heated, to the blowing nozzle (13).The air source comprises a compressor (11) which is housed inside the support structure (1) and is connected to the handpiece (28) by means of the air supply pipe (14) and produces a constant air flow having a pressure when leaving the blowing nozzle (13) of between 0.1 and 1 bar. The blowing nozzle (13) has a maximum outer dimension ranging between 0.4 and 1.3 mm and is able to be inserted inside endodontic canals so as to inject the air expelled from it into endodontic canals, once inserted therein.

Provided is a cutting bar for dental use that can cut both dentin and enamel with a single bar unanesthetically and efficiently without causing any pain or unpleasant sensation in a patient, in particular, a cutting bar for dental use that can fundamentally solve the problem in that a cutting blade of a cutting bar rotating at low speed comes into contact with hard enamel present in a surface layer of a tooth during cutting of carious dentin to cause unpleasant sensation in a patient. A cutting bar for dental use includes a head in which a cutting blade is formed; a neck leading to the head; and a handle joined to the neck through an intermediation of a joint portion, wherein diamond abrasive grains are electrodeposited in a predetermined range extending from a substantially maximum diameter portion of the head to the neck.

The present invention includes an apparatus for delivery of pressurized particulate matter against a surface or target to abrade, texture, sandblast, etch, erase, cut, penetrate, smooth, clean, polish, harden and / or deburr the surface or target. The invention is expected to be used in slightly different embodiments, both by dentists and oral hygienists to clean teeth, and by hobbyists, although numerous other uses are within the contemplation of the inventors. The dental embodiment features a prefilled, sealed, and disposable fluidizing chamber and cannula assembly that avoids contamination and which has been approved by the FDA for dental use. The general utility embodiment features a refillable fluidizing chamber and detachable cannula.Included is a fluidizing chamber having a discharge end of an inlet tube that is disposed below or overlaps the intake end of the outlet tube such that the discharge of the inlet tube blows the particulate matter into the fluid above the intake end of the outlet tube, thereby suspending it therein, without clogging. The invention further provides for a duckbill check valve to prevent backflow of particulate matter when the chamber is disconnected from the pressurized fluid source or there is a drop in pressure from said source. Included with the general utility embodiment are a refill aperture and removable refill aperture plug to facilitate recharging the fluidizing chamber with particulate matter using a filling cartridge.

A method of coating an article includes the steps of providing a powder comprising coated particles; and spray coating the powder onto a surface of the article to form a composite coating. The spray coating may be carried out by combustion spraying, gas plasma spraying, including vacuum plasma spraying (VPS), and cold spraying. The article may be an implant for surgical or dental use. The powder may include particles of metal coated calcium phosphates, especially metal coated hydroxyapatite. The particles may include bioactive agents.

The invention relates to a one-component self-adhesive composition for dental use comprising radically polymerizable component(s) with an acidic moiety as component A, radically polymerizable component(s) without an acidic moiety as component (B), an oxidizing agent comprising persulfate(s) as component (C), transition metal component(s) as component (D), photoinitiator system(s) as component (E), optionally non acid-reactive filler(s) as component (F), and optionally additive(s) as component (G).

The invention belongs to the technical field of characterization of a biomedical used high molecular material, in particular to a method to characterize the visible light curing performance of dental-used resin and agglomerant. The invention makes use of the two-dimensional infrared spectrum technology to determine the curing performance of the material in a curing mode; and a series of spectral lines are got; the spectral lines can detect such performance parameters as the curing induction period, the curing time, the state of cure, the curing rate and so on during the curing process of the material, and can determine the conversion speed of various monomers and the double bonds of the monomers. The invention is applicable for dental resin or agglomerant of different curing modes, and has extensive applicable prospect in the field of research of the mechanism of dental polymeric material, development of new materials and so on. In addition, the testing process is simple. Accordingly,the invention has important promotion and application values.

A cement for dental use, containing a first agent and a second agent, wherein both of the first agent and the second agent contain a polymerizable monomer (a) and a filler (b), wherein the first agent and / or the second agent further contains a photopolymerization initiator (c), wherein further as a chemical polymerization initiator (d), either one of the first agent and the second agent contains an oxidizing agent (f) and the other contains a reducing agent (g), the oxidizing agent (f) and the reducing agent (g) constituting a redox polymerization initiator, wherein the photopolymerization initiator (c) contains an α-diketone, and the photopolymerization initiator (c) is contained in a total amount of from 0.010 to 0.100 parts by weight, based on 100 parts by weight of the total amount of the polymerizable monomer (a), wherein the chemical polymerization initiator (d) is contained in a total amount of from 0.001 to 20 parts by weight, based on 100 parts by weight of the total amount of the polymerizable monomer (a), and wherein a cured product has a compression modulus immediately after photocuring of from 100 to 400 MPa, and a compression modulus after 24 hours from photocuring of 500 MPa or more. The cement for dental use of the present invention is suitably used for adhering the dentine and a crowning restorative material in the field of dental therapy, or the like.

A vibrating dental device vibrates a specific tooth in a dentition attached with a bracket, a wire or a mouthpiece as an orthodontic appliance. The vibrating dental device includes a vibration source, a connector connected to the orthodontic appliance, and a vibration transmitter, which transmits vibration generated by the vibration source to the connector. The connector is detachably attached to the orthodontic appliance.

An adhesive composition for dental use exhibiting acidic property, including a mixture of a polymerizable monomer component (A) containing a phosphoric acid-type polymerizable monomer having an acidic group derived from phosphoric acid, and a multivalent metal ion-releasing component (B), wherein the multivalent metal ion-releasing component (B) is capable of releasing at least earth metal ions, and in the composition, earth metal ions stemming from the component (B) are present together with the phosphoric acid-type polymerizable monomer in such an amount that a total valency ratio (RE) defined by the following formula (1) is in a range of 0.2 to 3.0. The adhesive composition is capable of strongly adhering and fixing a composite resin or a prosthetic material to a tooth for extended periods of time maintaining stability.RE=TVE / TVA  (1)wherein TVE is a total valency of the earth metal ions contained in said composition, andTVA is a total valency of the acidic groups of the phosphoric acid-type polymerizable monomer contained in said composition.

Provided is a soft flexible oral appliance having protuberances that mimic naturally occurring dental Tori. An upper, palatial appliance and a lower, mandibular appliance may be used in conjunction or separately to alleviate a variety of disorders, improve facial tone, and increase physical performance. The appliances are lightweight, thin, and do not prohibit normal speech patterns when in use Small protuberances are strategically molded along key surfaces of each appliance to stimulate nerves in the tongue and affect forward protrusion. Forward positioning of the tongue dilates the airways of the throat improving breathing while the use is sleeping, playing sports, or talking. It also reduces bruxing or grinding of the teeth. A method is further provided, for adding protuberances to other types of oral appliances, thereby conferring some of the benefits listed above on appliances originally intended for other dental uses.

The present invention relates to ceramic precursor compositions and chemically bonded ceramic (CBC) materials, especially Ca-based, and composite biomaterials suitable for orthopaedic and dental applications with improved setting and curing properties resulting in stable close contact between biomaterial and bone tissue. The present invention also relates to a method of manufacturing said cured material, a bioelement and carrier material for drug delivery made by said cured material, a kit comprising the ceramic precursor powder and hydration liquid, as well as the use of said ceramic precursor powder and hydration liquid, or said cured material, for orthopaedic and dental applications.

The invention discloses a cosmetic filling device with adjustable filling volume, and relates to the technical field of preparations for medical use, dental use or dress and make up. The cosmetic filling device comprises a fixed seat, wherein the inner bottom walls of the two sides of the fixed seat are fixedly connected with electric rods; the tops of the electric rods are fixedly connected withslide blocks which are movably connected with the inner wall of the fixed seat; electromagnets are fixedly connected to the middle parts of the slide blocks; and gears which are meshed with the innersides of the slide blocks are movably connected to the inner wall of the fixed seat. According to the cosmetic filling device with adjustable filling volume, a dielectric plate and a resistor are usedcooperatively, a bearing plate moves down gradually along the gradual filling of cosmetics into a cosmetic bottle, and the dielectric plate gradually reduces the relative areas of two polar plates, so that circuit voltage through the polar plates is reduced gradually. When the circuit voltage is reduced to be less than the minimum channel voltage of the resistor, the resistor is in a short-circuited state, and the filling device stops filling immediately, so that the automatic filling effect is achieved, and the filling efficiency and quality are improved greatly.

The invention relates to a computed tomography apparatus designed for dental use, which includes a first arm part supporting imaging means and arranged turnable by means of an actuator, and a second arm part supporting the first arm part and arranged turnable by means of an actuator. The actuators are arranged controllable such that, during the imaging process, said first arm part does not rotate but remains in its place in relation to said second arm part and said second arm part rotates about its rotation axis.

The medical, particularly dental imaging camera including an elongated housing (2) that can be held by a single hand of a user and provided, at its front end, with an imaging element, this housing (2) including a sensitive control element capable of freezing, on a display (5), an image selected by the user, this control element having a detection area (9) situated on the housing (2) that is delimited by a surface discontinuity such as a recess or a relief (11). The housing (2) encloses a sensor element associated with an electronic driving circuit and an electrostatic foam element whose one end is applied against the sensor element and whose opposite end is applied against an area of the inner face of the housing (2) located to the right of the detection area (9).

The present invention relates to ceramic precursor powder compositions and chemically bonded ceramic (CBC) materials, Ca-aluminate and / or calcium silicate, and a composite biomaterial with prolonged shelf time of the precursor, suitable for orthopaedic applications with improved injectability. The present invention also relates to a method of manufacturing said cured material, bioelements, implants, or drug delivery carrier materials made by said cured material, a kit comprising the ceramic precursor powder and hydration liquid, as well as the use of said ceramic precursor powder and hydration liquid, or said cured material, for orthopaedic and dental applications.

A denture forming apparatus for dental use includes clamps for protruding from and retracting to opposing sides in order to clamp or unclamp opposing side portions of the flask, thereby fixing or unfixing the flask; a pressing unit placed above the clamps to charge the resin, contained in a resin-filling pipe, into the flask under a predetermined pressure; and a control unit for controlling the operation of the clamps and controlling the pressing unit to descend at a predetermined rate of descent according to a type of the resin contained in the resin-filling pipe. The denture forming apparatus can be used irrespective of the type of resin since the speed of the pressing unit can be regulated. Accordingly, it is possible to realize an improvement over the conventional art, which can use only a designated type of resin.

A pre-printed semifinished product (130) to make an individual impression tray for obtaining an impression of a dental arch. The pre-printed semifinished product is substantially U-shaped and has a recess (101) on one side arranged to receive an impression material (80) in a thermoformable material and a protrusion (102) on the opposite side. The pre-printed semifinished product has at least one externally protruding wing (36) arranged to be used by a dentist (60) as manoeuvring grip for removing the impression tray with the impression material hardened inside. On the pre-printed semifinished product (130) a retention element (135) is arranged having a grip portion for the impression material. The grip portion remains visible in the pre-printed semifinished product (130) and is arranged to retain the impression material (80) during the removal of the impression tray from the dental arch of the patient. The grip portion is made at portions of fibres (134) of a material selected from the group consisting of woven fabric; non woven fabric, knitted fabric, a material having a predetermined rate of porosity, a combination thereof [FIGS. 36 and 37].

A kit (1) to make an individual impression tray for dental use comprising essentially a standard model (20) reproducing a dental arch (24), a semifinished product of thermoformable material, for example a plate member (30), and a container (10) for a heat exchange liquid. The first step that is carried out by the dentist (60) to obtain the individual impression tray (100) provides the insertion of the model (20) in the container (10). Then, next to dental arch of the model (20) a plate member (30) is arranged and hereafter a certain amount of a liquid is put (15), for example water, in the container (10) up to covering plate member (30). The liquid (15) is then heated by a source of thermal power, for example a microwave oven (40) stopping heating when the temperature of the liquid (15) achieves a value T* higher than the temperature for softening the thermoformable material of the plate member (30). At the temperature T*, plate member (30) of thermoformable material is in the plastic state and therefore collapses on the standard model (20) assuming substantially its shape, obtaining a thermoformed plate member (30′) equipped with a recess (101) at the side facing the model (20) and a corresponding projection (102) at the opposite side.

The method for the manufacture of an impression-making spoon for dental use, of the type comprising a tray for the impression-forming material and a handle for manipulation of the spoon, envisages forming the tray and the handle by means of folding of a single sheet of cut laminar material.

A sealant composition, suitable for surgical or dental use, comprises a sealant and, dispersed therein, one or more particles of a material which is prestressed and / or capable of undergoing expansion or contraction.

In a desktop three-dimensional scanner for dental use of the related art, a two-axis rotation motion unit, on which a target object can be placed and rotated in order to image the entire shape of the target object, is coupled to the scanner, and thus, when a subject is placed on the imaging stage and is rotated along the horizontal axis of rotation of the stage, the subject is dropped from the stage by gravity after being inclined, and accordingly, additional fixing means or a receiving jig should be placed on the stage together with the subject to prevent same. In such a case, inconvenience is caused because the target objects to be scanned have various shapes and the fixing means or receiving jigs should fit the shapes thereof. According to one embodiment of the desktop three-dimensional scanner for dental user of the present invention, a camera and a projector are provided on the unit for changing the horizontal axis of rotation of the imaging stage, and thus a target object does not have to be inclined during the scanning process and dental prostheses of various shapes can be three-dimensionally scanned even without additional fixing means or a receiving jig.