A dental bur (10) is disclosed having an elongated shank (11) which extends to a cutting head (12). The shank includes a gripping portion (14), a tapered transition portion (15), and a neck portion (16). The diameter of the neck portion (D1) is generally the same as the diameter of the cutting head (D2). The cutting head includes six helical cutting flutes (20) extending from the neck portion (16) to a tip (18). Each cutting flute has a top cutting edge (21) and a series of generally rectangular shaped cross-cut notches. The rectangular shaped cutting notches are formed by a generally flat floor (25) and two oppositely disposed sidewalls (26). The floor forms a floor cutting edge (28) while the sidewalls form sidewall cutting edges (29). The intersection of the floor cutting edge with the sidewall cutting edges form two interior cutting corners (30).

A dental instrument 1 adapted for performing osteotomy includes a mounting shank 2 and, in line therewith, a working portion 3 including cutting zones 3A, of which at least part is covered by a coating of carbon-enriched tungsten carbide except for a plurality of annular bands 10 distributed along the length of the working portion to indicate the depth of penetration of the tool into a portion of jaw.

The present invention provides body anchored protraction devices. The protraction devices direct the negative forces of protraction over a large surface area on the chest and abdomen of a patient. The protraction devices employ a cantilever support rod and ultra-low friction joints to enable low compression on the head without restricting free movement.

A dental drill bit for creating a particularly shaped osteotomy in a human jawbone includes: a mounting shank and cutting head. The cutting head includes: four blades protruding away from an axis of the drill bit, each blade having a thickness and being positioned 90 degrees to each adjacent blade to form a cruciform-shaped cross-section, with two pairs of the blades each positioned 180 degrees apart. Each of the pair of blades positioned 180 degrees apart are offset laterally a distance about equal to the blade thickness, and each blade has a shaped periphery that includes: a first radiused periphery; and a second radiused periphery. The first radiused periphery is shaped to form a hemisphere frustum-shaped socket portion when rotated about the axis of the drill bit, and the second radiused periphery is shaped to form a bullet shaped socket portion when rotated about the axis of the drill bit.

An implant placement trephine may be used to drill into bone and also to bore a core of bone for purposes of forming an implant channel for implant placement. The trephine generally includes a trephine body with a cutting blade at one end and a spindle extending through the trephine body with a pilot drill at one end extending beyond the cutting blade. The spindle may be adjustably attached to the trephine body to allow the pilot drill to be adjusted relative to the trephine cutting blade. The trephine may be prepackaged with an implant, such as a dental implant, having a corresponding size. The implant placement trephine may be used for different osteotomy applications, for example, to form a channel for dental implants or orthopedic retaining stabilizers. The trephine may also facilitate harvesting bone from the core of bone removed for an autograft at the implant site.

A bone pen includes a pen which is coupled to a user's handpiece and comprises a drill section provided at an end portion thereof to drill to an alveolar bone; a cup which has an accommodating space to hold therein bone particles harvested during the drilling operation, has an outer diameter corresponding to a mesiodistal diameter of a patient's tooth targeted for treatment, and coupled to the pen so that the accommodating space can surround the drill section; and a spring which is supported at one side of the pen and elastically supports the cup with regard to the pen, wherein the drill section of the pen is positioned at a central axis line of the cup, maintained as being positioned at a mesiodistal diameter center of the tooth targeted for treatment, and guided for drilling.

The invention relates to a device for penetratingly extending a blind hole into a hard tissue, particularly a jawbone. The device is characterized in that it comprises a tubular body (1) having a distal working opening (2) and an inlet (3) opposite the working opening (2), said inlet being closed by a sealing element (4) that is penetrated by a shaft (5) of a working tool, for example a milling tool (5, 6), and allows at least a feed motion, a drive motion and a steering motion of the working tool (5, 6), the tubular body (1) being provided with a connection (8) for applying an internal pressure.

The invention relates to a surgical bone-drilling device (1) comprising a drill (3) connected to a drive (2), a container (4) for a coolant (5), at least one pump (6) for delivering the coolant (5), a first conduit (7) for delivering the coolant (5) from the container (4) into the interior of the drill (3), and a second conduit (8) for delivering the coolant (5) from the container (4) to the outside of the drill (3), and also a handpiece (19), a drill guide (20), and a cooling method for such a bone-drilling device (1). To improve the cooling action, a measuring device (9) is provided for detecting the drilling depth (d) of the drill (3), which measuring device (9) is connected to a control device (10) for controlling transport of the coolant (5), such that the quality of the coolant (5) in the first conduit (7) and in the second conduit (8) can be controlled as a function of the drilling depth (d) of the drill (3).

A method for configuring a surgical guide and an associated implant. The implant and surgical guide are for maxillofacial osteosynthesis. Three-dimensional models of the pre- and post-operative anatomy are used to define attachment points. These attachment points are used to determine a structure for the implant and surgical guide.

A mandibular bone plate can include a body that defines a bone facing surface, an outer surface that is opposite the bone facing surface, and a plurality of bone anchor holes that extend through the body from the bone facing surface to the outer surface. The body can include a chin portion and first and second extension portions that extend from the chin portion such that the bone facing surface of the chin portion faces the inferior surface of the mandible when the mandibular bone plate is attached to the mandible and the bone facing surfaces of the first and second extension portions at least partially face the lingual surface of the mandible when the mandibular bone plate is attached to the mandible.