The invention relates to a multi-layer, preferably co-extruded, plastic film with improved modulus properties, which is suitable, in particular, for producing three-dimensionally shaped articles.

A dentoalveolar stabilizer includes a tray or channel having arranged thereon a stabilizing medium, which in some instances may be a wax-like medium. The tray and/or channel is sized and shaped to be placed over the entire mandibular (i.e., lower) or maxillary (i.e., upper) dentition. The stabilizing medium holds an affected tooth (e.g., a tooth that is loose or fractured following dentoalveolar trauma) in place and uses the stability of the adjacent healthy teeth and hard tissues to help stabilize the affected tooth. The dentoalveolar stabilizer can also stabilize an alveolar fracture, a palatal fracture, and/or a non-displaced mandible fracture. The dentoalveolar stabilizer can then be kept in place until the patient can be seen and definitively managed by a dental specialist.

A retainer cooperating with a plurality of teeth and configured to stabilize the plurality of teeth, the retainer including at least one elongated arc which is shaped overall adapted to a natural curvature of a lower jaw or an upper jaw, wherein the at least one elongated arc is locally adapted individually to a surface contour of respective abutting teeth, wherein the retainer is machined from a sheet metal plate and includes two mutually parallel surfaces, wherein the sheet metal plate is made from a nickel titanium alloy, preferably a nitinol, wherein the retainer contacts a tooth surface in an installed condition of the retainer, wherein a machined surface of the retainer faces the tooth surface in the installed condition of the retainer, and wherein an upper side or a lower side of the retainer corresponds to an original surface plane of the sheet metal plate.

A medical apparatus including a bar with a first attachment loop, a second attachment and a plurality of hooks, wherein the medical apparatus is an arch bar.

A custom oral device is provided that fits on the maxillary or mandibular arch of a wearer. The oral device comprises a tray that corresponds with the shape and size of a wearer's oral anatomy. A soft liner is disposed within an occlusal channel of the tray having an upper surface that comprises an impression having features that correspond to at least a portion of the wearer's dentition and in which the wearer's teeth align. An apparatus and a method for making the custom oral device are provided.

Disclosed is a retention device including at least one retention apparatus, designed to be bonded on a portion of a dental arch, and at least two clips, positioned apart from one another; each clip being a rigid hook and rigidly attached to the retention apparatus, and configured to fasten to the dental arch. Also disclosed is a method for producing such a retention device.

The present disclosure provides systems and methods for designing a dental splint for an individual. For example, a method may include obtaining a digital 3D model of a dentition of the individual. An insertion direction is determined for the dentition. The method includes determining a height of contour for one or more teeth of the dentition based on the insertion direction. A cut line of the dental splint is identified based on a retention amount as a distance apically beyond the height of contour of the one or more teeth of the dentition.

Patient specific dental appliances and methods for manufacturing the dental appliances. The dental appliances can be unilateral or bilateral space maintainers, fixed dental retainers, or other dental appliances. The dental appliances are manufactured based on the specific anatomy of each patient so that the dental appliances more closely conform to the patient's anatomy. The dental appliances include a first tooth securing portion that is configured to be secured to a first tooth of a patient, and a wire secured to and extending from the first tooth securing portion. The wire has a varying cross-sectional shape along at least a portion thereof, for example a flat section on a tooth-facing side of the wire. The wire can also include a scalloped portion with indentations and projections. The wire can also include an occlusal rest.

An orthodontic retainer is configured for application to a lingual surface of a patient's teeth. The retainer is custom designed to exactly match the shape of the lingual side of the patient's teeth and is formed from a plurality of tooth-adhering portions connected by elongated connection portions. The tooth-adhering portions each have a generally flat top edge and a generally curved bottom edge. The connection portions are located at a position below the top edge and above the bottom edge of the tooth-adhering portions. The retainer is formed as a single piece by milling, injection molding or 3D printing.

An improved hand tool with molar as resistance point comprises a holding unit, a pivoting unit, an expansion unit and a clean jacket. The holding unit has a first end and a second end. The first end is provided for holding by a user, and the pivoting unit is pivotally connected to the second end correspondingly. A butt end and a connection end are respectively formed at two ends of the expansion unit, the butt end correspondingly butts a plurality of molars of the user, the connection end is pivotally connected to the pivoting unit correspondingly, and the clean jacket is correspondingly sleeved on the expansion unit.