A surgical burr includes prevention part, a shaft and a working part including at least one cutting or grinding surface for processing of a material selected from a bone, a cartilage, a calcified tissue, a tooth and a foreign object within a patient body. The prevention part is configured to have a first position and a second position. In the first position, it at least partially prevents the cutting or grinding surface from processing the material, when a force applied to the prevention part is less than a predetermined amount of force. In the second position, it allows the cutting or grinding surface to process the material, when the force applied to the prevention part is equal or higher than the predetermined amount of force.

A surgical burr includes prevention part, a shaft and a working part including at least one cutting or grinding surface for processing of a material selected from a bone, a cartilage, a calcified tissue, a tooth and a foreign object within a patient body. The prevention part is configured to have a first position and a second position. In the first position, it at least partially prevents the cutting or grinding surface from processing the material, when a force applied to the prevention part is less than a predetermined amount of force. In the second position, it allows the cutting or grinding surface to process the material, when the force applied to the prevention part is equal or higher than the predetermined amount of force.

The invention provides a dental milling tool for milling dental materials in the making of dental prostheses. The dental milling tool is a ball-nose end mill having three helical flutes, each flute being associated with a cutting edge, each cutting edge having chip breakers along the curved edges of the ball. The dental milling tool may be formed from a hard material such as carbide based material, ceramic, cermet, superhard materials including polycrystalline diamond (PCD) and cubic boron nitride (CBN), and diamond composite. Alternatively, the dental milling tool may be coated with a hard coating such as diamond coating, diamond-like-carbon (DLC), nitride based coating such as titanium aluminium nitride (TiAIN), aluminium titanium nitride, (AITiN), and titanium nitride (TiN), and ceramic coating.

The invention provides a dental milling tool for milling dental materials in the making of dental prostheses. The dental milling tool is a ball-nose end mill having three helical flutes, each flute being associated with a cutting edge, each cutting edge having chip breakers along the curved edges of the ball. The dental milling tool may be formed from a hard material such as carbide based material, ceramic, cermet, superhard materials including polycrystalline diamond (PCD) and cubic boron nitride (CBN), and diamond composite. Alternatively, the dental milling tool may be coated with a hard coating such as diamond coating, diamond-like-carbon (DLC), nitride based coating such as titanium aluminium nitride (TiAIN), aluminium titanium nitride, (AITiN), and titanium nitride (TiN), and ceramic coating.

The invention relates to a milling tool for seating a screw in a dental structure, the screw being provided to be joined to a dental implant, wherein the tool comprises a coupling region provided for coupling to a milling machine and a working region defined by a rod that on one end supports a head having a plurality of cutting blades radially distributed with respect to a longitudinal axis of the coupling region, wherein each cutting blade has a lower cutting surface. Said lower cutting surface has a region with a convex curvature which has a radius that varies between a maximum and a minimum value, the maximum value of the radius being equal to 0.1350*Dh, wherein Dh corresponds to the diameter of the effective area of the milling tool, and the minimum value of the radius complying with the formula:

[00001]$R_{\min }=125\frac{\sqrt{2}.Math.0.0012\mathrm{Dh}}{3.2}$

A dental implant has an implant body made of diamond material, the implant body being provided with a bore hole that has at least one lateral dimension and a depth dimension, the lateral dimension and the depth dimension being mm sized. The bore hole is substantially formed by laser light being directed at the implant body to form said bore hole by softening said diamond material at an intended location of said bore hole. The bore hole is further defined by utilizing at least one metallic drilling tool to remove more of the diamond material after initial formation of the bore hole by said laser light. Preferably, the drilling tool has a cone shaped drilling head or a rectangular drilling head.

A dental implant has an implant body made of diamond material, the implant body being provided with a bore hole that has at least one lateral dimension and a depth dimension, the lateral dimension and the depth dimension being mm sized. The bore hole is substantially formed by laser light being directed at the implant body to form said bore hole by softening said diamond material at an intended location of said bore hole. The bore hole is further defined by utilizing at least one metallic drilling tool to remove more of the diamond material after initial formation of the bore hole by said laser light. Preferably, the drilling tool has a cone shaped drilling head or a rectangular drilling head.

Methods and systems for tracking a dental tool within an oral cavity for taking and/or updating of a dental impression are described. In some embodiments, a marker, optionally a magnetic marker, is coupled to position movements of a rotatable dental tool. In some embodiments, detected movements of the marker are used, optionally in combination with other tracking data, to map contours which a portion of the rotatable dental tool follows during interaction with a dental surface. Optionally, the interaction occurs during grinding, drilling, and/or other procedures; which may be preparatory, for example, to the manufacture and/or fitting of a dental prosthetic.

Methods and systems for tracking a dental tool within an oral cavity for taking and/or updating of a dental impression are described. In some embodiments, a marker, optionally a magnetic marker, is coupled to position movements of a rotatable dental tool. In some embodiments, detected movements of the marker are used, optionally in combination with other tracking data, to map contours which a portion of the rotatable dental tool follows during interaction with a dental surface. Optionally, the interaction occurs during grinding, drilling, and/or other procedures; which may be preparatory, for example, to the manufacture and/or fitting of a dental prosthetic.

Apparatus and method for installing a multi-tooth dental prosthesis in one session are shown and described. A first tool attaches to the jawbone, and serves as a foundation for subsequently used guides. Existing teeth and dental fixtures are removed, and the bone tissue is removed to accommodate the prosthesis. Subsequently, a drill guide is used to drill implant holes. An abutment guide is then used to place abutments. Copings are then installed. Next, the prosthesis may be installed and cemented to the copings. A resinous filler material may be applied to fill gaps and holes in and between the copings and the prosthesis, and is sanded smooth. The first tool, the guides, and the prosthesis are predesigned and prefabricated based on images taken of the patient anatomy.