A support is coupled to an appliance to decrease warpage. The support may comprise a plurality of extensions coupled to the appliance to decrease warpage. The extensions can be coupled to the appliance at one or more of many locations, such as on an occlusal surface, a wall, an edge or an interior of the appliance. In some embodiments, the extensions are coupled to walls of the appliance such as a buccal wall and a lingual wall, and the extensions can be coupled to the walls of the appliance near edges of the walls, such as a gingivally facing edges of the walls that are oriented toward the gingiva when the appliance is worn.

Modelling material which includes (a) at least one radically polymerizable monomer, (b) at least one initiator for the radical polymerization and (c) at least one inert component. The inert component (c) is soluble in the polymer formed by polymerization of the monomer (a), wherein the solubility of component (c) decreases as the temperature increases, with the result that a phase separation takes place above a particular temperature. The material is suitable in particular for the production of models of dental restorations for investment casting processes.

The present disclosure provides methods, computing device readable medium, devices, and systems having a dental attachment placement structure. One dental attachment placement apparatus includes a body having an attachment placement surface that is to be placed on an attachment affixing surface of a tooth and wherein the attachment placement surface includes a portion that is shaped to allow placement of an attachment at a particular position on the affixing surface of the tooth and a portion of the body having a contour that is shaped to correspond with a contour of an alignment surface of a tooth and when the contour of the body and the corresponding contour is aligned, the attachment is located at the particular position and can be secured to the affixing surface of the tooth.

The present invention relates to a suspension comprising 50-95% by weight of the total suspension (w/w) of at least one metallic material and/or ceramic material and/or polymeric material and/or solid carbon containing material; and at least 5% by weight of the total suspension of one or more fatty acids or derivatives thereof. In addition, the invention relates to uses of such suspension in 3D printing processes.

A forming apparatus (100) for a dental object (101), having a forming means (127) for producing a predetermined spatial shape of the dental object (101); and a radiation source (105) for emitting radiation having a wavelength shorter than 350 nm onto the material (129) of the dental object (101).

A method for directly printing orthodontic and dental appliances on the teeth of a patient. The tooth is scanned with a scanner which is communicated with a computer controller configured to recognize the anatomy of the tooth. The surface of a tooth of the patient is then prepared in order to receive the type of appliance designated for the patient. Using image data from the print head, the computer controller prepares a three-dimensional blueprint or design of an appropriate orthodontic or dental appliance. The computer controller controls the type and amount of material that is distributed through the print head only when the print head passes over the recognized anatomy so as to directly print the corresponding appliance onto the tooth layer by layer as the print head makes successive passes over the surface of the tooth.

The present invention relates to a method of producing a dental object (100), comprising the step of producing a support structure (101) on the dental object (100) having a predetermined breaking point (103) arranged such that a residual portion (105) of the support structure (101) remains on the dental object (100) after the predetermined breaking point (103) is separated.

A three-dimensional device is fabricated in a layer-by-layer approach using a support material. The support material is deposited in a liquid form on a surface, hardened by cooling or ultraviolet (UV) curing, and selectively ablated to create an area within which the desired structure of the device will be formed. Active material is deposited into this area, and the layer-by-layer process repeated until the three-dimensional device has been completed. Thereafter, any remaining support material is removed by water or other solvent.

A process for replicating soft tissue anatomy of a dental patient prior to preparing an implant-supported fixed prosthesis is disclosed. The process may include: securing an interim prosthesis intra-orally in the dental patient for a predetermined time, after implants of the dental patient are osseointegrated, to evaluate the interim prosthesis based on a plurality of parameters within the mouth of the dental patient; printing a three-dimensional printed-resin prototype having an intaglio surface based on the evaluated interim prosthesis; attaching the three-dimensional printed-resin prototype into the implants; and injecting a low viscosity elastomeric impression material between the intaglio surface of the three-dimensional printed-resin prototype and the soft tissue of the dental patient to obtain a soft tissue replica for preparing the implant-supported fixed prosthesis.

The present invention provides a resin composition for optical shaping that, with its low viscosity, enables easy stereolithographical fabrication of an object, and that can produce an object having desirable toughness and desirable water resistance, particularly for dental mouthpieces and denture base materials. The present invention relates to a resin composition for optical shaping comprising a urethanized (meth)acrylic compound (A) and a photopolymerization initiator (B), the urethanized (meth)acrylic compound (A) being a (meth)acrylate containing at least one polyol moiety and a urethane bond per molecule, said at least one polyol moiety being selected from the group consisting of a polyester, a polycarbonate, a polyurethane, and a polyether each having a structure derived from a C4 to C18 aliphatic chain diol unit (a) having a branched structure.