Dental preparation uses a tooth preparation guide custom-made liar fitting with teeth of a patient. The preparation guide includes one or more guide channels for guiding a cutting tool. The preparation guide enables modification of the teeth as planned with high level of precision. A dental prosthesis for installing onto prepared teeth of the patient is provided before preparation of the teeth. The prosthesis includes features that are complementary to the prepared teeth. The prosthesis can be installed immediately after preparing the teeth using the preparation guide. With the high level of accuracy and precision in the preparation of teeth, no modification of the prosthesis would be needed for installation.

To provide a liquid material which can only adjust transparency by applying on a part of a zirconia crown having high transparency, without coloring. The present disclosure provides an opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, comprising; (a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound, (b) 60 to 89 wt. % of water, and (c) 1 to 20 wt. % of an organic solvent.

A wax model of a required coping is produced using CNC machining techniques based on a virtual model of the coping created from digital data obtained from the intraoral cavity. The dental coping is then fabricated from the wax model.

A method that includes the step of using a person's fingers to push a dental composition into engagement with a damaged tooth surface of a damaged tooth thereby adhering the dental composition to the damaged tooth surface and covering at least a portion of the damaged tooth surface. The dental composition includes a base material comprising at least one of the following compounds chosen from the group consisting of: a product consisting of one or more hydrocarbon-based waxes that may also include inorganic fillers and/or organic fillers; an uncured, uncrosslinked silicone high consistency rubber base; and a hydrophobic water insoluble solid material that is malleable at 37° C. or lower and safe for a human oral environment. The base material has at least one dry, powdered hydrophilic polymeric substance engaged with and dispersed on one or more surface of the base material.

A computer-implemented method of designing a dental restoration at a display includes providing a virtual three dimensional representation of at least a portion of the patient's dental situation. The method includes displaying a library arch form in an alignment with the virtual three dimensional representation of the portion of the patient's dentition. The library arch form includes a pair of two virtual library teeth packing to each other. The method also includes in response to a parametric change of one of the two virtual library teeth, moving the other virtual library tooth to keep packing to the changed virtual library tooth.

A computer-implemented method of designing a dental restoration at a display includes providing a virtual three dimensional representation of at least a portion of the patient's dental situation. The method includes displaying a library arch form in an alignment with the virtual three dimensional representation of the portion of the patient's dentition. The library arch form includes a pair of two virtual library teeth packing to each other. The method also includes in response to a parametric change of one of the two virtual library teeth, moving the other virtual library tooth to keep packing to the changed virtual library tooth.

A system and method include performing digital block-out of one or more digital preparation teeth.

A crown for a damaged tooth is manufactured via metal injection molding and features an opening into which can be applied flowable dual-cure tooth colored material.

A crown for a damaged tooth is manufactured via metal injection molding and features an opening into which can be applied flowable dual-cure tooth colored material.

The invention relates to a process for fabricating complex mechanical shapes from metal or ceramic, and in particular to fabricating complex mechanical shapes using a pressure-assisted sintering technique to address problems relating to variations in specimen thickness and tooling, or densification gradients, by 3-D printing of a sacrificial, self-destructing powder mold is created using e.g. alumina and swellable binders such as polysaccharides. The binder-free sintering powder that forms the manufactured item is injected into the mold, and high pressure is applied. The powder assembly can then be sintered by any pressure assisted technique to full densification and the self-destructing mold allows the release of the fully densified complex manufactured item.