A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier. The method has the steps of (a) partially building up the object and thereby providing an object-in-process; (b) coating a first surface area of the carrier with a first blank layer of the first light hardenable resin; (c) moving the carrier and thereby positioning the first blank layer between the build platform and the light projector; (d) bringing the object-in-process into contact with the first blank layer; (e) irradiating the first blank layer with a light pattern and thereby supplementing the object-in-process by a hardened layer; and (f) separating the supplemented object-in-process from the carrier.

Dental prosthesis having a structure similar to that of natural teeth and a method for manufacturing the same. Provided is a dental prosthesis capable of expressing a structure and properties similar to natural teeth in which enamel is a surface layer and dentine is an inner layer underneath the enamel. In addition, a method of manufacturing the same dental prosthesis through three-dimensional printing is provided. The dental prosthesis is a cured product including ceramic particles dispersed in a polymer matrix. The cured product includes a first cured product layer including 70% to 90% by weight of ceramic particles having an average particle diameter of 100 to 1,000 nm and a second cured product layer including 40% to 60% by weight of ceramic particles having an average particle diameter of 10 μm to 500 μm, the second cured product layer being adjacent to the inner surface of the first cured product layer.

A method for manufacturing an object, in particular an orthodontic appliance, by a 3D-printing device comprising a supply device for provision of a non-solidified material and means for illumination to solidify a layer of non-solidified material provided by the supply device at least zonally to fabricate the object, characterized by the following steps: a virtual model of the object to be printed is provided for the 3D-printing device, the supply device provides a layer of the non-solidified material, the means for illumination solidify the layer at least zonally, whereby the means for illumination comprises illumination pixels arranged in a grid, preferably with a dimension (between 10 μm and 80 μm, particularly preferred between 30 μm and 50 μm, wherein at least one dimension of the object represented by the virtual model is chosen to be aligned with the dimension of the illumination pixels.

A dental appliance having an integrally formed reservoir and/or an ornamental design integrated thereon. The ornamental design can be selected or customized by a patient. The design can be created by directing energy to the dental appliance to alter a material property of at least a portion of the appliance to create the design. Alternatively, a groove or recess can be formed on a surface of the appliance to either mechanically retain an ornamental design or the groove or recess can be filled with ink to form the design. The appliance, including the integrally formed reservoir, can be formed using direct fabrication techniques.

Disclosed herein are methods of manufacturing an oral appliance, the method comprising the steps of: a) importing into a computer aided design (CAD) computer program a digitized data set obtained from a three-dimensional scan of a patient's dentition; b) preparing a three-dimensional electronic model of the patient's dentition; c) subtracting the three-dimensional electronic model of the patient's dentition from an image of a solid block to obtain an appliance data set; and d) manufacturing a dental appliance in accordance with the appliance data set. Also disclosed are devices made by the above method, and methods of treating a condition, for example a sleep breathing disorder, by using a device made by the above method.

The present invention relates to implantable medical devices (dental and orthopedic) (osseointegrable implants) textured by the additive manufacturing process. Such implants are prepared in such a way as to comprise a larger surface area of contact between implant/adjacent tissues, porous microstructure with complex geometry with controlled and diversified pore size, which confers several technical advantages. In addition, the present invention relates to the process of preparing said implants and/or screws with an optimized structure for accelerating osseointegration. Finally, the present invention refers to the use of said implants as carriers of drugs or cells in order to treat the site, promote its healing, tissue regeneration or promote cell growth.

The present invention relates to a polymerizable composition, which comprises (a) at least one radically polymerizable compound and (b) at least one initiator for the radical polymerization, wherein the composition furthermore comprises (c) at least one UV absorber and (d) at least one optical brightener and comprises at least one radically polymerizable oligomer and at least one radically polymerizable, polyfunctional monomer as the at least one radically polymerizable compound (a).

Network enabled 3D printing and automated processing techniques for oral devices are disclosed herein. An example technique includes receiving, via a network, a data file representative of a mouth of a user, and printing, by a 3D printer, a 3D oral device based on the data file. The example technique may further include automatically ejecting, from the 3D printer, the 3D oral device, and scanning the 3D oral device to generate a 3D scan file of the 3D oral device. The example technique may further include comparing the 3D scan file with the data file to determine at least one feature represented in the 3D scan file that exceeds a deviation threshold relative to a corresponding respective feature represented in the data file; and finishing, by a finishing module, the 3D oral device by smoothing the at least one feature on the 3D oral device.

A method of making an object by additive manufacturing includes: (a) providing an additive manufacturing apparatus including a light source; (b) providing a carrier platform having a substantially planar object adhesion surface, the adhesion surface having a plurality of elongate wash channels formed therein; (c) producing the object on the carrier platform adhesion surface with the additive manufacturing apparatus from a light polymerizable resin, the object having at least one internal cavity formed therein; then (d) washing the object on the carrier platform with a wash liquid under conditions in which the wash liquid reaches the at least one internal cavity through the wash channels; then (e) optionally, at least partially drying the object on the carrier platform by separating the same from the wash liquid, and then agitating the object on the carrier platform to drain excess wash liquid from the object; (f) optionally, further curing the object.

A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.