A medium for a dental structure includes a first portion having a first physical property arranged to connect with a first dental component of the dental structure; and a second portion having a second physical property arranged to connect with a second dental component of the dental structure, wherein the combination of the first portion and the second portion is arranged to minimize stress established between the first dental component and/or the second dental component when the first dental component combines with the second dental component.

A medium for a dental structure includes a first portion having a first physical property arranged to connect with a first dental component of the dental structure; and a second portion having a second physical property arranged to connect with a second dental component of the dental structure, wherein the combination of the first portion and the second portion is arranged to minimize stress established between the first dental component and/or the second dental component when the first dental component combines with the second dental component.

Zirconia dental ceramics exhibiting opalescence and having a grain size in the range of 10 nm to 300 nm, a density of at least 99.5% of theoretical density, a visible light transmittance at or higher than 45% at 560 nm, and a strength of at least 800 MPa.

Zirconia dental ceramics exhibiting opalescence and having a grain size in the range of 10 nm to 300 nm, a density of at least 99.5% of theoretical density, a visible light transmittance at or higher than 45% at 560 nm, and a strength of at least 800 MPa.

Systems and methods for designing thermoformed removable orthodontic aligners and improving the retention of such aligners to patient teeth are disclosed. The systems generally include a digital scanner that is configured to obtain a digital image of a patient's dentition and a computing environment that is configured to receive a copy of the digital image; create a reference plane relative to one or more teeth featured within the digital image; position a line that runs perpendicular from the reference plane and runs tangential to a height of maximum convexity of each of the one or more teeth; measure an area of undercut between such perpendicular line and an exterior surface of each of the one or more teeth; repeat the foregoing steps at a plurality of points along the perimeter of each of the one or more teeth; and construct a three-dimensional model of an undercut area for each of the one or more teeth.

An inorganic-organic composite medical material includes a two-phase co-continuous structure of an inorganic substance having open pores and an organic polymer filling the open pores, wherein the open pores have an average pore diameter of 1 nm or more and 100 nm or less, and the inorganic substance has a specific surface area of 100 m.sup.2/g or less.

An inorganic-organic composite medical material includes a two-phase co-continuous structure of an inorganic substance having open pores and an organic polymer filling the open pores, wherein the open pores have an average pore diameter of 1 nm or more and 100 nm or less, and the inorganic substance has a specific surface area of 100 m.sup.2/g or less.

The present invention relates to a method for the design and manufacture of a dental component with a surface, wherein a 3D model of the dental component is designed by means of a CAD unit and the dental component is manufactured by a CAM unit on the basis of the 3D model. In order to provide a method which significantly shortens the time required for the design and manufacture of a dental component, so that the length of the dental session at which the patient must be present is shortened, it is inventively proposed that the 3D model is manufactured in at least one first design step, in which a first 3D submodel is designed with at least one first surface section, and a second design step in which a second 3D submodel is designed with at least one second surface section, wherein the first design step is completed before the second design step and the CAM unit begins the manufacture of the first surface section of the dental component based on the first 3D submodel before the design of the second 3D submodel is completed.

A dental composition that includes one or more monomers, a plurality of crosslinking agents, and an initiator.

A dental burr for preparing tooth for fabrication may include a shank designed to engage with a dental handpiece; and a burr body extending from the shank. The burr body may have a lip distal from the shank, the lip defining an opening into a cavity within the burr body, the cavity being sized to accommodate a tooth; and an indented edge extending from an area of the burr body proximate to the lip to the lip, wherein an exterior surface of the indented edge, the lip, and an inner surface of the cavity be an abrasive surface. The burr body may also have at least one debris vent extending therethrough.