A device for mandibular advancement, including a tube and a telescopic rod associated with the tube, in which the tube and the telescopic rod can be associated to the teeth of the upper and lower arches, in which the telescopic rod includes a threaded pin which engages a female thread of a hollow element slidably positioned in said tube, and the hollow element includes a maneuvering portion external to the tube; the device includes a friction element, arranged between the inner walls of the maneuvering portion and the thread of the pin and having an outer surface which is complementary to the inner walls of said maneuvering portion and a threaded internal cavity which copies the thread of the pin.

A dental surgical retraction article is manufactured by combining one or more aliphatic or cycloaliphatic isocyanates with one or more polyols including at least one polyether polyol that has a molecular weight of at least 2000.

An orthodontic tool includes a trimmer having a lever, a base, and a spring positioned between the lever and the base. A first substantially transversely extending portion extends from the lever and a second substantially transversely extending portion extends from the base. A cutting surface is associated with each transversely extending portion. The orthodontic tool also includes a tool set having at least two arms coupled together at one end by a fastener and the arms including two or more of a sanding tool, a hook, and a pick.

A system for repositioning teeth a patient from an initial tooth arrangement to a final tooth arrangement includes a plurality of incremental position adjustment appliances, each having an arrangement of cavities shaped to receive and reposition teeth of the patient. The cavities in at least one appliance in the system have a different geometry than that of at least one other appliance in the system. At least some of the appliances in the system are successively worn by the patient to exert force on at least one tooth and move the teeth of the patient from a first arrangement to a successive arrangement different from the first arrangement. The system includes a first multilayer shell with a bending stiffness factor less than about 0.1 GPa*mm.sup.3 and an elastic modulus no greater than about 1.5 GPa; and a second shell with a bending stiffness factor greater than 0.1 GPa*mm.sup.3.

A system for lip retraction and aerosol reduction, including a mouthpiece with an integrated single-lip retractor and aerosol suction head, single-lip internal retentive wings and external retentive wings configured to support and secure the mouthpiece in a mouth of a patient, and comfort retention notches formed between the internal retentive wings and external retentive wings to enhance comfort of the patient and to secure the mouthpiece in the mouth of the patient. The system includes a High-Volume Evacuator (HVE) valve stem configured for attachment to an HVE suction tube to provide suction for the aerosol reduction.

An apparatus comprises a universal fit, boil-and-bite denture that may be sold over-the-counter. The apparatus includes a first portion comprising a tooth and a second portion attached to the first portion, the second portion comprising heat moldable material. The second portion may be configured to be formed in a mouth of a user when the user bites down on the heat moldable material. A multilayered (e.g., three layered) denture includes an expandable palate. While a palate portion expands, deforms, or otherwise adjusts, a dental occlusion of the denture is maintained. The denture may be manufactured using injection molding or other layered manufacturing techniques.

Disclosed herein are antifungal composites, devices, and methods to reduce or prevent a fungus from growing on the antifungal composite. The antifungal composite and devices thereof may include a biocompatible polymer and a Si.sub.3N.sub.4 powder loaded in at least a portion of the biocompatible polymer. The polymer may be a thermoplastic polymer such as a poly(methyl methacrylate) (PMMA) resin and the Si.sub.3N.sub.4 powder may be present in a concentration of about 1 vol. % to about 30 vol. % in the thermoplastic polymer.

In one embodiment, an orthodontic article is described comprising the reaction product of a polymerizable composition comprising: a) 30-70 parts by weight of monofunctional (meth)acrylate monomer, wherein a cured homopolymer of at least one monofunctional (meth)acrylate monomer has a Tg of at least 30, 35, 40, 45, 50, 55, or 60° C.; and b) urethane (meth)acrylate polymer comprising polymerized units of an aliphatic polyester diol. Also described are polymerizable compositions, as well as methods and systems for making an article utilizing 3D printing.

Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument.

Made of a durable and auto-claveable material including a handle portion of the intra-oral tongue/cheek retractor with a mirror device with an offset in the handle, with a handle flat surface on the mirror side, and with a retention end of handle; at least one mirror or mirrored surface; and a manner for securing/holding or having a mirror or mirrored surface to the handle flat surface on the mirror side where the device can free-up hands of a professional and/or an assistant; can remove any extra “hardware” in a mouth of a patient; provides better visual feedback from the mouth of the patient to the professional; is useable for dental procedures and oral surgery; and is sterilizable in conventional dental or surgical machines.