摘要:
In one aspect the present disclosure relates to a process for producing a dental article comprising at least two parts, Part A (e.g. coping) and Part B (e.g. veneer), Part A and Part B each having a 3-dim. structure and an outer and an inner surface, the outer surface of Part A having a shape which essentially corresponds to the shape of the inner surface of Part B, Part B comprising a material with a porous section and being produced with the aid of a rapid-prototyping technique, the process comprising a first heating step, wherein Part A is serving as support structure for Part B during said heating step.
摘要:
Blank for manufacturing dental moulded components, wherein the blank has a blank body (2) composed of tooth repairing material from which the moulded component which is to be manufactured can be produced by removing material by means of a tool (6, 7), wherein the blank has an encoding with at least one structure (11-14; 17-19; 31-33; 42-43; 52-53) as an information carrier for properties of the blank body (2), wherein the structure is arranged in the blank in such a way that the position, dimensions or type of structure can be determined by sensing or measuring the blank. In this context, the position, the dimensions or the type of the structure (11-14; 17-19; 31-33; 42-43; 52-53) are embodied in such a way that the value acquired during the determination of the above corresponds to analogue information about the property of the blank body (2).
摘要:
A process for manufacturing a head piece (1) of a tooth implant from an individually produced positive model (27). The head piece (1) is fitted with a plug-in type connection shaped with form-closure (7) as an anti-twist feature and can be inserted into the base (3) which in turn can be embedded in the jawbone. On either head piece or base there is a lug (5) which fits snugly into a socket on the other part. The process calls for copy-milling (V) in which the outer surface of the positive model (27) is three-dimensionally scanned. The data from the scan are used to guide a milling machine which creates the head piece (1) from a ceramic blank (29). In accordance with the invention, before the copy-milling (V) of the blank (29), a preparatory step (I) in the production process is conducted. When the blank is yet in its raw form, the insertion connector with the form-closure (7) connection is shaped ahead of by attaching a scanning insert on the positive model (27) at a point matching the position of the insertion connector on the blank, which enlarges the positive model by at least as much space (a) as that to be occupied by the insertion connector.
摘要:
The improved milling machine makes use of individually controlled x-axis, y-axis, and z-axis carriages. These carriages provide positive and precise control of the position of the cutting tools and the blank to be cut. The tools are located in spindles that are moved in the x-axis. A work piece or blank is manipulated in the y-axis and the z-axis. The tools are offset in the x-axis. Lights on a work space door are used to signal the condition of the mill machine and the milling operation. A tool changer allows the tools to be changed to accommodate other materials. A camera or other sensor is used to detect the location and wear on the tools.
摘要:
The method described in this disclosure permits the production of dental replacements, such as inlays, onlays, and crowns, at high accuracy of fit and low cost in a single session of the patient's at the dentist's. For this purpose, a material that hardens is used for making a temporary inlay which provides an impression of the prepared dental cavity. After hardening, this material is removed from the tooth. In a first processing run, a first sensor (7a) does a preliminary scan of the temporary inlay (4) and a first processing tool (30a) is used for preliminary processing of the substrate mass (6). In a second processing run a second sensor (7b) and a second processing tool (30b) are used for a fine scan and fine processing. For this purpose the sensors (7a, 7b) and the processing tools (30a, 30b) are all arranged on a single linear stage (13). The temporary inlay (4) and the substrate mass (6) are attached to holder units (3, 5 ) of a rotation-synchronizer system (10) which in turn is arranged on a slide and elevator system (11, 12).
摘要:
The invention makes it possible to produce from a blank an article whose contour is altered, preferably linearly enlarged, with great precision in relation to a corresponding contour of a used model (1c). A copying machine is used in the production. The machine comprises, on the one hand, a first pair of units (1, 2) which are arranged so as to be rotatable. The model (1c) is arranged on the first unit (1) and the blank is arranged on the second unit (2). The machine also comprises a pair of second units (24, 25) in which one supports a detecting member (24a) which is brought into cooperation with the model, and the second unit supports a machining or actuating member which is brought into cooperation with and acts on the blank. The said pairs of units are displaced from and towards each other during production. In each pair of units, the units are also controlled individually so that the one unit executes second displacement movements relative to the other unit in such a way that the desired alteration is obtained.
摘要:
A blank for manufacturing molded dental components includes a blank body that includes tooth repairing material. A molded dental component is manufactured by removing portions of the tooth repairing material using a tool. The blank is encoded with at least one structure as a carrier of information regarding properties of the blank body. The at least one structure is arranged such that at least one of a position, dimensions, or a type of structure can be determined by sensing or measuring the blank. In this context, the position, the dimensions, or the type of the structure are embodied such that a value acquired during a determination of the above corresponds to information about a property of the blank body.
摘要:
The invention concerns a method for manufacturing a template with at least one opening to drill through so as to create an appropriate bore hole in the bone of a partially toothless lower or upper jaw so as to fix an implant in said bone. Hereto a mould plate with a means of reference is made which can be put in a fitting manner over teeth which are present in the jaw and a position for the corresponding bore hole is selected and determined in relation to said means of reference. An aligning plate is made, provided with fixing means which make it possible to mount the aligning plate on the mould plate. Said opening in the aligning plate for guiding a drill is provided in such a position that, when the aligning plate is mounted on said mould plate and the latter has been provided in a fitting manner on said teeth, the position of this opening makes it possible, when drilling through said opening, to create said bore hole in correspondence with the selected position.
摘要:
An improved milling machine makes use of individually controlled x-axis, y-axis, and z-axis carriages. These carriages provide positive and precise control of the position of the cutting tools and the blank to be cut. The tools are located in spindles that are moved in the x-axis. A work piece or blank is manipulated in the y-axis and the z-axis. The tools are offset in the x-axis. Lights on a work space door are used to signal the condition of the mill machine and the milling operation. A tool changer allows the tools to be changed to accommodate other materials. A camera or other sensor is used to detect the location and wear on the tools.
摘要:
Methods, systems, and devices for monitoring tool breakage and wear in a dental milling machine are provided. In one embodiment, a dental milling system includes a milling tool for milling a dental prosthetic and a spindle operable to receive, fixedly engage, and rotate the milling tool. A first accelerometer is positioned adjacent to the spindle and is operable to detect vibrations associated with rotation of the milling tool. A processor is in communication with the first accelerometer to receive data sets representative of the vibrations detected by the first accelerometer. The processor processes the data sets to identify changes in one or more harmonics of the detected vibrations indicative of a break of the milling tool.