Abstract: Methods for automatically segmenting a 3D model of a patient's teeth may include scanning a patient's dentition and converting the scan data into a 3D model, including a sparse voxel representation of the 3D model. Features can be extracted from the sparse voxel representation of the 3D model and input into a machine learning model to train the machine learning model to segment the 3D model into individual dental components.

Abstract: Disclosed is a method of manufacturing a digital overdenture to improve manufacturing convenience and preciseness. The method of manufacturing the digital overdenture according to the present invention includes a series of operations such as generating a planning image, manufacturing auxiliary devices for manufacturing the overdenture such as a surgical guide, a flattening guide, an impression model, and the like, setting a holder device and correcting a temporary denture, obtaining a corrected-scanned image, and designing and manufacturing a digital overdenture.

Abstract: An articulator having a maxillary member and a mandibular member, which are connected to each other via condylar articulations, wherein a maxillary adaptor is attachable or attached at the maxillary member and a mandibular adaptor at the mandibular member, wherein a maxillary alignment member especially is form-fittingly connected to the maxillary adaptor and a mandibular alignment member is especially form-fittingly connected with the mandibular adaptor, and wherein the alignment members are automatically alignable to each other and comprising scanning members, by means of which the arrangement of alignment members and adaptors is scannable in a scanner and especially the relative position thereof moreover is detectable in relation to the articulator via the scanner.

Abstract: A dental model, includes (a) an upper segment, the upper segment having a shape corresponding to at least a portion of a dental arch of a human patient; (b) a base segment having an external surface and a bottom surface; (c) at least one internal cavity formed in the base segment, and optionally the upper segment, the at least one internal cavity extending through the bottom surface; and (d) at least one wash channel extending from the external surface of the base segment through the base segment and into the at least one internal cavity.

Abstract: According to an embodiment, a light emitting diode (LED) nail dryer comprises a cover having a front surface and a rear surface, the rear surface having a rear opening, a bottom plate coupled with the cover and having a bottom opening extending to the rear opening, an internal body formed on the bottom plate in the cover and having a plurality of sockets, and a plurality of LED panels. The plurality of sockets of the internal body may be arranged in a dome shape. Each of the plurality of LED panels may be detachably fitted into a respective one of the plurality of sockets via at least one magnet or at least one fitting structure.

Abstract: An interproximal reduction tool and method preferably includes at least one polishing strip; at least one abrasive wheel; and a low speed and high torque dental electric motor. First, the area between two adjacent teeth is manually polished with a plurality of polishing strips. The polishing strip is held between a forefinger and thumb and moved in a horizontal plane. Each abrasive wheel preferably includes an abrasive disc and a shaft. The abrasive disc includes a disc base and abrasive material. The abrasive material is adhered to opposing sides of the disc base. It is preferable to have an annular space between an outer edge of the disc base and an outer perimeter of the annular abrasive material. The low speed/high torque motor preferably utilizes an existing dental motor and modifies the dental motor to have a preferable gear reduction of at least 16:1.

Abstract: Provided is a dental file exhibiting high performance and having high flexibility and excellent root canal followability. A dental file (10) of the present invention includes a working portion (11) in a spiral shape. An outer edge of the sectional shape of the working portion (11) at any position includes a single arc (40) and three or more lines (41, 42, 43). One end of the arc (40) forms a first cutting blade. The three or more lines (41, 42, 43) are positioned inside a virtual circle (50) partially including the arc (40). The length of the arc (40) may be equal to or greater than 1/12 and equal to or less than ? of the circumferential length of the virtual circle (50), or a second cutting blade (16) may be further provided inside the virtual circle (50).

Abstract: A method for designing dentures according to which artificial teeth can be easily and accurately attached to a denture base, which is designed and shaped by CAD/CAM, when the artificial teeth are arranged on the denture base is provided. The method for designing a denture (10) on a computer based on data on an intraoral shape comprises: creating data on a shape of a denture base (20) based on the intraoral shape (S22); creating data on a position of an artificial tooth (30) to be arranged on the denture base (S23); and creating data on a shape of an occlusal guide (40) that is tabular and has a recess part corresponding to a shape of the arranged artificial tooth in an occlusal surface side (S24).

Abstract: Methods of forming interproximal reduction guides are described herein. These interproximal reduction guides apparatuses may include a body that fits over the patient's dental arch and one or more guide slots formed in them configured to limit the motion of an interproximal reduction cutting tool in a defined manner.

Abstract: A method of automatically producing or reproducing a customized AGP (Anterior Guidance Package) equipped splint for a patient with or without a severe malocclusion is provided. The method of automatically producing or reproducing an AGP equipped splint according to current invention comprises of combining Virtual Articulation, CAD (Computer Aided Design)-CAM (Computer Aided Manufacturing) method with AGP and special retentive piece technology. The method of the current invention enables a patient with or without a severe malocclusion to receive his/her customized AGP equipped splint or a replacement thereof automatically without visiting the dentist again and again.

Abstract: Cheek and lip expansion devices including an upper frame portion configured to extend about an upper dental arch, and a lower frame portion configured to extend about a lower dental arch. The upper and lower frame portions may each include first and second side members, each with anterior and posterior regions. An upper connecting member may extend between the anterior regions of the upper side members. A lower connecting member may extend between the anterior regions of the lower side members. The posterior regions of the upper and lower side members on respective sides of the frame are joined to one another to form a bendable radius that resists bending at a distinct point. The bendable radius on opposed sides permits the frame to be collapsed top to bottom. The frame may be collapsible side-to-side. A posterior crossbar may be provided extending between the posterior regions of the side members.

Abstract: A hair extension apparatus includes: a first base member comprising a first front edge, a first rear edge, a first side edge, a first top surface and a first bottom surface; a second base member comprising a second front edge, a second rear edge, a second side edge, a second top surface and a second bottom surface, wherein the second base member is coupled to the first base member; a first artificial hair section comprising artificial hair, wherein the first artificial hair section is coupled to the first top surface of the first base member; and a second artificial hair section comprising artificial hair, wherein the second artificial hair section is coupled to the second top surface of the second base member.

Abstract: A selectively removable and protective nail cover kit that includes one or more elastically deformable and unitary bodies each having a sidewall with an outer surface, with a first end enclosing and defining a lower aperture, with a second end opposing the first end of the sidewall, defining a body length separating the first and second ends of the sidewall, of a practical sidewall thickness spanning the body length, and with an inner surface defining a nail placement cavity that is enclosed by the sidewall and preformed into an arcuate shape, spans from the lower aperture and terminating at an upper internal wall of the elastically deformable and unitary body that is disposed proximal to the second end of the sidewall, and of a length less than 2 inches.

Abstract: A computer program and computer-based system for remotely assessing oral health of a person by obtaining at least one digital image (1) of the person's oral cavity and additional non-image data (2) comprising anamnestic information about the person (30). The digital images (1) are segmented using statistical image segmentation algorithms (101,102) to extract visible segments (3), which are further processed to predict any invisible segments (6). The resulting segments are processed by a statistical object detection algorithm (104) using the non-image data (2) as further input to identify dental features (7), which are filtered to select only risk-related dental features (8) using a risk database (9) and mapped to respective tooth regions (11) or oral cavity regions (12) in an Oral Risk Atlas (10).

Abstract: A brace cap is disclosed, and a method for using such. The brace cap has an annular design with an asymmetric c-shape rotated around a central axis, configured to surround a brace bracket to prevent the brace bracket from irritating adjacent surfaces within a mouth of a user. The asymmetric c-shape has a first arm and a second arm, where the first arm is longer than the second arm.

Abstract: Embodiments disclose a disposable protective assembly apparatus for a dental syringe body of a dental syringe. The apparatus is a combination of a disposable syringe tip and a disposable protective sleeve, the sleeve being pre-attached to the syringe tip, and the sleeve being in a pre-folded position to be quickly and easily slid over the dental syringe prior to a dental operation.

Abstract: Methods for fabricating orthodontic appliances are described herein. In some embodiments, a method includes fabricating a shell including a plurality of cavities shaped to receive teeth, fabricating a discontinuity in the shell, and fabricating an elastic member positioned to interact with the discontinuity. At least one of the shell, the discontinuity, or the elastic member can be fabricated using a direct fabrication technique.

Abstract: A tool for measuring the inclination of maxillary incisors can accurately quantify the clinical inclination of the maxillary incisors relative to a true horizontal reference plane before and during dental treatment. The tool includes a stationary base and a measuring arm pivotably connected to the base. The base includes a main window defined therethrough and a spirit level. The movable arm includes a protractor, a sleeve connected to the protractor, and a sliding sheet slidably received within the sleeve. An adjustable incisor guide at a measuring end of the sliding sheet includes an incisor ledge for receiving an incisor edge during measurement. The spirit level can be used to align the base with the true horizontal plane and the movable arm can be raised until the incisor ledge contacts the incisor edge and the sliding sheet contacts the facial surface of the maxillary incisor.

Abstract: A holder for a dental crown. The dental crown holder may comprise a handle and a working end, where the working end has at least one extension arm extending therefrom. The dental crown holder may be used by covering the working end of the dental crown holder, including the extension arms, in a curable material; placing the dental crown into the curable material such that at least a portion of the extension arms and at least a portion of the curable material are located inside an interior surface of the dental crown; and curing the curable material. The dental crown holder with cured curable material may thus securely hold the dental crown without any slipping, rotating, or wobbling, allowing the user to make adjustments to the dental crown while holding the handle of the dental crown holder rather than the dental crown itself.

Abstract: An aligner assembly for facilitating an alignment of one or more teeth is disclosed. The aligner assembly includes a shell adapted to receive the one or more teeth. The aligner assembly further includes one or more engagement structures configured to be coupled to one of the one or more teeth or the shell. Each engagement structure includes a slot and adapted to engage with the shell for facilitating a reposition of the one or more teeth.