Abstract: The present invention relates to a dental drill comprising a shaft (2) and a cutting portion (3) provided with cutting edges. At the front side, the dental drill (1) comprises two main cutting edges (5) and, laterally on the cutting portion, a plurality of additional cutting edges (7). The main cutting edges (5) converge in a central axis of the dental drill and directly pass into two lateral cutting edges (8).

Abstract: A drill particularly suited for drilling holes for dental anchors. The drill has a central shaft including a proximal end having conventional connection structure for attachment to a powered rotatable appliance and a distal end bearing a forwardly projecting pin which occupies and is guided within a pilot bore. The pin has a blunt, preferably spherical, enlarged head. The blade is mounted on the central shaft between the proximal and distal ends of the shaft. The blade is preferably annular, having cutting teeth facing the distal end of the shaft. At least one relief communicates between the interior of the annular blade and the exterior thereof.

Abstract: A shank for a dental instrument, including instruments which are used in endodontics and in dental prophylaxis, is fitted on a contra-angle or a handpiece and is provided with a rotary drive which cooperates directly with the rotary transmission members of the kinematic chain of the contra-angle, upstream of the head of the contra-angle. Also, the head of a dental instrument which is equipped with such a shank.

Abstract: Non-traumatic expansion devices for the bone for receiving affixing means for dental prosthetics, each expansion device being formed by a one-piece component (1) having an upper base (11) formed as a prismatic screw head. A center body (3) has milled generating lines extending in axial direction. A first transition area (5) is disposed between the center body (3) and the upper base (11). A threaded end (9) has a shape of an elongated cone and a second transition area (7) has a conical shape tapering toward the threaded end (9). Each expansion device has a different thickness and length on the threaded end (9) depending on the type of required expansion. The expansion device has the function of a screw for the purposes of drilling the bone and keeping the bone mass whole.

Abstract: An apparatus for intraosseous injection for dental application comprising a hollow drill (1) having a perforation or perforations (2) along its length and a beveled cutting end (3), fitted into a hub (4) of partly circular and partly hexagonal external cross-section and provided with a circumferential lip (5) and a funnel-shaped orifice (6) giving access to the open end of the said hollow drill at its end remote from the said cutting end, and an adapter (7) removably mated with the said hub by means of a matching orifice of substantially hexagonal cross-section and having at its end remote from said orifice a shank (8) shaped to fit into the chuck of a standard contra-angle dental handpiece, and a protective cap (9) fitted over the said hollow drill.

Abstract: A dental drill is formed of a solid elongate body, having a longitudinal shank including an axially disposed irrigation channel and a working portion having an annular boss and a neck of reduced radius relative to the boss, and a cutting region disposed distally of the neck, the cutting region including at least four axi-symmetric flutes formed upon lateral surfaces of the cutting region, each of the flutes defining co-axial peripheral profiles, each of the flutes separated by substantially co-axial channels, the working portion of the drill having an irrigation channel extending the entire length and having at least one outlet within each of the channels, the one outlet of each channel located proximally to a distal tip of the working portion, the tip defining a surface formed integrally and continuously with ends of the flutes and channels.

Abstract: A dental bur has a working surface including cutting elements which deflect or abrade upon encountering material at or above the preselected hardness corresponding to the lower limit of hardness of non-carious dentin. The dental bur is constructed of metal, ceramic, or plastic.

Abstract: A helical threaded bone tap (10,10',10") for preparing a surgical osteotomy with a defined thread configuration to allow for the insertion of a screw design implant. Incorporated into the tap are four cutting flutes (22) equally spaced, radially, to each other which allow for the removal of bone chips formed during the cutting of the thread. To better assist in this process, cutting flutes (22) are formed with a helical twist to draw the chips outward as the as the osteotomy is being tapped. Distal to the helical threaded bone tap (18) is a driving head having a polygonal configuration (26) and/or a latch type configuration (32) to allow these taps to be driven, respectively, by hand with a ratchet or by using a surgical drilling unit.

Abstract: A dental tool holder (2) and/or tool (23) having a tip (22) is made by non-cutting deformation of metal blank (1, 16) and optionally removal of material to provide the dental tool with a pointed tip (22). The blank may have a first part (3, 11) which can define a groove (4), a second part (5, 12) which can be folded to form a shaft (6) and optionally an integral tool forming portion (13).

Abstract: An extraction device for extracting some or all of a tooth from a patient, such as the root of the tooth. One embodiment of the device includes an extraction bit having helical windings without a linear core portion separate from the windings, and in that manner is distinguishable from a common screw. The extraction bit may include a partial-spiral flute or groove formed in a tip thereof. A lockable and releaseable hand piece for attaching to the extraction bit provides leverage to the user for dislodging the tooth root, and is reversible in its attachment position to the extraction bit.

Abstract: An oral surgical instrument (osteotome) for creating openings in the jawbone for the implantation of implants, which comprises a holder, a shaft and a working tip that has a circular cross section. A set of surgical instruments is provided with at least one preformer having a conical working tip and at least one implant bed former having a working tip which is adapted to the outer contour of the implant. The diameter of the working tip of the preformer is somewhat smaller than the largest diameter of the working tip of the implant bed former. By forming the openings in the jawbone using such instruments, the implants may be inserted with a greater fitting strength.

Abstract: In a tool (1) for the preparation, with the removal of material, of a lateral cavity (K) in a tooth (Z), which tool has a tool shaft (2) of which one end is connected or can be connected with a dental handpiece (4) and of which the other end is connected or can be connected with a working body (14), the longitudinal middle axis (11b) of which working body extends approximately co-axially or axis parallel to the longitudinal middle axis (11a) of the tool shaft (2), and which working body has to both sides of a longitudinal middle plane (7) extending into its longitudinal middle axis (11b), lateral working surfaces (6) which each include an acute angle with the longitudinal middle plane (7), whereby the working surfaces (6) diverge in the direction towards the tool shaft (2), the working surfaces (6) have, at least in their longitudinal region (L3) towards the tool shaft (2), or over their entire length (L), a progressive divergence (18) relative to the middle axis (11b) of the working body (14).

Abstract: Disclosed is a device for the removal of dental dowel pins that consists of a hollow boring bit for use with an otherwise conventional dental drill. The inside diameter of the hollow bit is of a size sufficient to accept a dental dowel pin of a conventional size, thus providing a means by which to bore around a dowel in order to remove it from the tooth structure in which it is implanted.

Abstract: A medical or dental drill bit with one or more colored bands to indicate the drilling depth. The colored bands include groove portions filled with a color material. The invention also relates to a method of making such a drill bit.

Abstract: The sleeve has a cylindrical metal tube with a plastic core. The metal tube has one or more grooves on the inner surface of the tube that run along at least a portion of the length of the tube. The plastic core fills the annular space between the metal tube and the rod of a rotary dental instrument, such that plastic material (1) fills the grooves to anchor the plastic core to the metal sleeve and (2) is molded to rigidly link the rod to the sleeve. The present invention reduces the exposure of plastic material in the sleeve, thereby reducing plastic swelling that can occur when the dental instrument is repeatedly cleaned using disinfectants.

Abstract: A drill instrument with calibrated depressions as markings on the shaft set at determinable distances apart, e.g. at 1 mm increments is disclosed. These calibrations are designed to give a visible depth gauge indication when the tip or point of the drill is at the full length of the depth of a drilled hole. A stop means is variably fixable to the drill at determinable locations. This stop defines a predetermined length available for drilling a hole into bone or a tooth canal up to the precise location of the stop on the drill corresponding to the depth desired to be drilled.An organizer block or kit accommodates the drills and stops of the invention and preferably provides an alignment device for preparing drills having the pre-determined lengths according to the invention via a drill-length determining device for applying the stop means to the drill at the desired pre-determined length.

Abstract: The flutes of a drill bit (1) are constituted by helical portions (4) and rectilinear portions (5).

Abstract: A dental reamer having one or more cutting sections and one or more spiral grooves. The dental reamer has at least one cutting edge having a cutting point, characterized in that a tangent to the cutting point tends to superimpose itself on a tangent to a diameter of a circle in which the cutting sections are inscribed, wherein the diameter passes through the cutting point. The invention provides a reaming cut that, in a surprising manner, reduces or even eliminates the spiral displacement (i.e., uncontrolled advancement of the reamer) that results from rotation of the prior-art reamers, while still maintaining an excellent reaming efficacy.

Abstract: A surgical equipment for implanting dental implants has a boring instrument and an endo-osseous dental implant. The endo-osseous dental implant has a tubular distal section with a cylindrical wall that turns around an axis, and is provided with an outer thread and delimits an inner bone material holding volume. Its distal end having a thickness "e" which forms a ring-shaped transverse base with an inner diameter "d" and an outer diameter "d+2e". The cylindrical wall has at least one distal indentation that forms a front cutting edge at the ring-shaped base. Also disclosed is a boring instrument with a stepped drill having a distal section with a diameter between "d" and "d+2e" and a proximal section with a diameter of at least "d+2e" but smaller than the outer diameter of the thread of the dental implant.

Abstract: A bone mill for preparing the second-stage opening in crestal bone surrounding the gingival surface of a dental implant in a jawbone is tubular in form and has teeth with a negative rake on an end surface and the adjacent side surface for forming a shaped opening to the implant. The side surface of the mill near the end surface is tapered to the desired shape of the opening. A guide pin fixed in the implant mates with an opening in the bone mill to center the mill relative to the implant.

Abstract: A drill for the insertion of a dental implant is disclosed. The drill includes a rotational drive portion in the form of a metal rod with a first end and a second end. The first end is connected to a drilling apparatus. The second end of the rotational drive portion is connected to an active cutting portion made of plastic overmolded on a second end of the metal rod. The drill further includes a metal insert portion coupled to the active cutting portion to serve as a sharp edge for the active cutting portion.

Abstract: There is provided a rotary drilling instrument having uniform hardness, free from rust, and made of austenitic stainless steel possessing a hardness substantially the same as quenched steel or quenched martensitic stainless steel. The rotary drilling instrument is formed with a cutting section formed at one end of a body, a shank formed at the other end of the body, and a neck portion formed between the cutting section and the shank. The rotary drilling instrument is made of austenitic stainless steel having a fibriform organization elongated in a longitudinal direction and has a surface having a predetermined hardness.

Abstract: A drill bit for producing bone cavities for dental implants having a shaft which is indexable in a dental drill handpiece and a cutting head for removal of the bone tissue. Between the shaft and the cutting head, a bit body is provided whose cross section has reduced dimensions by comparison with the bone cavity formed by the cutting head.

Abstract: The invention relates to a surgical drill made of metal, for instance made of surgical grade stainless steel or carbon steel, intended for use when implanting cylindrical implants into bone tissue, preferably dental implants made of titanium. The body (3) of the drill (1) is coated by a thin layer of titanium nitride (TiN). The layer of titanium nitride is brightly colored and circumferential bands (8, 9, 10, 11) having a darker color have been etched around the envelope surface of the body (3) of the drill, said bands (8, 9, 10, 11) being located at predetermined distances from each other and having predetermined widths.

Abstract: A bone contouring tool for removing bony tissue surrounding an implanted dental implant and having an elongated shank with a blade and a pilot pin disposed at one end. The pilot pin extends downwardly from the blade and provides guidance during removal of the bony tissue.

Abstract: A self-limiting dental composite restoration sculpting bur particularly adapted for sculpting occlusal resins. Because of the cuspal angle of its cutting surface, the bur will make cuts that closely match the naturally occurring topography of human teeth as well as provide a visual stop that indicates when the desired cutting depth has been reached. The apparatus also includes a diamond coated cutting surface that is of such a roughness that it creates a physical stop that sends a tactile response to the operator when the bur contacts enamel. This tactile response ensures that the operator can avoid overcutting the restoration. In addition, a non-diamond coated annular band can be provided on the cutting head to create a safe zone which serves a further limit stop. The bur is mounted on a straight shaft to allow maximum vertical adjustment when mounted to a standard dental drill.

Abstract: An intracoronal bristle brush for preparing a tooth cavum comprising a plurality of bristles and a dental bit having a first end being a shank adapted to be received by a dentist's handpiece and a second end for receiving the plurality of bristles. The plurality of bristles emanate outwardly in a uniform manner from an axial hole within the second end. The diameter of the intracoronal bristle brush is substantially uniform along its entire length such that the bristles of the brush may penetrate into an interior surface of a tooth cavum.

Abstract: An improved dental drill bit (10) for use in a dental drill (18) having a short drill bit tip (12) which has a drill bit tip point (12A) positioned at an upper most distal end. A drill bit tip bottom (12B) is positioned at an opposite distal end to the drill bit tip point (12A). At least one drill bit tip plateau (12CA, 12CB) extends from the drill bit tip bottom (12B) to the drill bit tip point (12A). At least one drill bit tip groove (12DA, 12DB) extends from the drill bit tip bottom (12B) to the drill bit tip point (12A). A drill bit tip leading edge (12E) is formed between the at least one drill bit tip plateau (12CA, 12CB) and the at least one drill bit tip groove (12DA, 12DB). A base (14) comprises an upper base (14A) securely connected to a lower base (14B) having a middle base (14C) therebetween. The upper base (14A) is securely connected to the drill bit tip bottom (12B). An elongated shaft (16) has a shaft top (16A) securely connected to a shaft bottom (16B) having a shaft middle (16C) therebetween.

Abstract: A depth-marking system for use in connection with forming holes for receiving implants in a jawbone. The implants have a nominal length less than an actual length. At least one band marking is arranged on a tool for forming or measuring the implant holes. The at least one band marking includes a first line that indicates the actual hole depth, the actual depth including any lower cone-shaped portion of the hole. The at least one band marking also includes a second line above the first line that indicates a position of an uppermost of a unit arranged on the implant when the implant is in a final position in the hole and the unit is arranged in a final position on the implant.

Abstract: A temperature gauge for drills of the type having a head to which a drill bur having a throughbore extending to its drill bur tip is removably mounted includes a temperature sensor receivable in the drill bur throughbore for sensing and measuring the temperature at the drill bur tip and a thermometer coupled to the temperature sensor for displaying the temperature at the drill bur tip. A method of measuring the temperature of the drill site is also disclosed.

Abstract: A cutter for soft materials is described. The cutter is made from a conventional cutting instrument such as a dental drill bit having hard particles embedded in the tip surface. The cutter is ground at the tip end so as to remove particles which leave cavities around the peripheral fiat ground tip end. The open cavities and the sharp edges around them provide an effective cutting edge with which soft materials can be cut in clean even lines.

Abstract: The invention is a method and apparatus for embedding an implant of a special design in bone tissue in a way that encourages bone tissue growth in and around the implant thereby achieving greater attachment security over longer periods of time. The user employs a bone-fragment collecting drill to form the bone-tissue hole and deliver the resulting bone fragments to a collecting region. The user crumbles the bone fragments by placing them in the lower of two mating spoon-shaped jaws of a pliers-like device and repeatedly opening and closing the jaws until the bone fragments are crumbled. The surface of the implant is equipped with screw threads, one or more embedded helical channels, and through-holes to permit bone growth into the implant. The installation of the implant consists of partially filling the bone-tissue hole with bone crumbs, packing the helical channels and through-holes with bone crumbs, and screwing the implant into the bone-tissue hole.

Abstract: A rotatable tool that is suitable for high-speed drives has a shaft for holding the tool in a suitable chucking device and one end of the shaft contains a tool head with an active working surface. To provide improved cooling of the tool, the tool head is provided with a central in-flow channel fashioned as a blind hole from which a plurality out-flow channels discharge to the working surface of the tool head.

Abstract: Disclosed is a tool with cutting surfaces on the sides, end and tip that is inserted into a handpiece or milling machine. It is used according to a specific technique disclosed herein to mill precision surfaces in dental prostheses that are retained by screws to dental implants, abutments or replicas. The invention mills all types of dental implant prostheses that use a screw for retention. The milling tool of this invention allows the screw to pass through the screw access opening in the prosthesis and fit flush against the screw seat in the prosthesis, leaving space between the axial surfaces of the head of the screw and the screw access channel of the restoration. It also mills the small opening through the prosthesis through which the shank of the screw passes, so there is no contact between the prosthesis and the shank of the screw.

Abstract: A method and system for inserting a dental post into a tooth root canal. The method comprises the steps of cutting out a post hole in the tooth and inserting a threaded tap into the post hole for creating at least one groove along the hole. Significantly, the tap includes at least one slot defined by a pair of flexible legs and running at least a portion of the length thereof for reducing stress along the post hole during threaded insertion. Also provided is a lentulo drill comprising a spiraled wire with a reverse spiral configuration at the apical end thereof for confining cement placement in the post hole prior to insertion of the dental post.

Abstract: The present invention is directed to enhancing the accuracy with which tooth restorations are performed, including the manner by which a tooth is prepared and fit with a prosthetic crown. Further, the present invention is directed to reducing the skill dependent tasks associated with tooth restoration, while at the same time, improving the precision with which these procedures are performed. By improving the accuracy of restoration procedures, any need to repeat these procedures for a given patient can be eliminated and patient comfort can be improved.

Abstract: A twist-bladed dental drill with an enhanced cutting tip for preparing surgical sites for endosseous implants includes a central, axially-extending internal passageway for carrying fluid through the shank of the drill to the outer surfaces of the drill.

Abstract: A tri-spade dental drill with an enhanced cutting tip for preparing surgical sites for endosseous implants is described. The cutting tip incorporates a split point cutting surface for each of the three blades wherein the split point includes a positive rake angle. All three split points converge at the center of the drill, eliminating any chisel edges. The positive rake angle split point and its offset secondary cutting flutes breaks the removed bone into smaller chips, decreasing the principle cutting force necessary for drilling and facilitating material ejection.

Abstract: A temperature gauge for surgical drills of the type having a surgical head to which a drill bur having a throughbore extending to its drill bur tip is removably mounted includes a temperature sensor receivable in the drill bur throughbore for sensing and measuring the temperature at the drill bur tip and a thermometer coupled to the temperature sensor for displaying the temperature at the drill bur tip. A method of measuring the temperature of the drill site in the bone of a patient is also disclosed.

Abstract: A dental implement designed to be retained for reciprocating-movement by the sleeve member of a dental handpiece. The dental implement is comprised of a flat dental tool having a flat blade portion and a flat shank portion. The flat blade portion can also be formed with a triangular or arcuate cross-section while retaining the flat shank portion and the blade edges can be straight or have a saw-tooth configuration. A removable tool holder has a slot to receive the dental tool and a outside cylindrical shape complementary with the bore of the sleeve member. Forces applied to the tool holder control the displacement of locking protrusions on the tool shank to selectively permit the tool to be driven in a reciprocating movement with or without rotation and to be removed entirely from the sleeve member.

Abstract: According to the invention, there is provided an elongated liquid-cooled dental bur having a long direction, a proximal part adapted to be inserted into a drive device connected with a source of cooling fluid, a distal part having a cutting tip, a first channel in the proximal part fluidly communicating with the source of cooling fluid and at least one orifice extending from the first channel directed at the cutting tip for directing a spray of cooling liquid at the cutting tip, a cutting tip outer surface, a second channel fluidly communicating with the source of cooling fluid and extending longitudinally through the distal part and into the cutting tip, a discharge port extending through the tip outer surface for cooling the cutting tip.

Abstract: A method of fabricating an endodontic instrument by a machining operation is disclosed, and wherein a wire-like rod composed of a titanium alloy is advanced past a rotating grinding wheel at a relatively slow feed rate, with a sufficient depth of cut to remove all of the material on a given surface without over grinding a previously ground surface, and with the grinding wheel rotating at a relatively slow surface speed. The disclosed method is able to efficiently produce endodontic instruments having a high degree of flexibility, high resistance to torsional breakage, and with sharp cutting edges along the working length.

Abstract: According to the invention, there is provided an elongated liquid-cooled dental bur having a long direction, a proximal part adapted to be inserted into a drive device connected with a source of cooling fluid, a distal part having a cutting tip, a first channel in the proximal part fluidly communicating with the source of cooling fluid and at least one orifice extending from the first channel directed at the cutting tip for directing a spray of cooling liquid at the cutting tip, and further including a collar radially extending from the proximal part having a circumference, wherein the orifice is disposed in the collar proximal to the circumference, and wherein the collar has an end surface disposed transversely to the long direction facing the distal part, and the orifice is disposed in the end surface. The distal part is preferably removably secured to the collar, for removal and replacement of worn cutting tips.

Abstract: The drill consists of a cylindrical body (1) in which at least two helical flutes (2) are hollowed out, which helical flutes (2) delimit as many helical cutting edges (3), this body (1) being extended via a drive shank (4). The body (1) is equipped with guide marks consisting of circumferential grooves (7), having a profile substantially in the shape of an arc of a circle, which are formed in the cylindrical body (1), and of an elastic ring (8, 9 or 10) which has a profile adapted to that of the grooves (7) and a more or less toric shape and which is capable of being placed, as desired, in one or other of these grooves (7), before the drill is put into operation, and of remaining therein until completion of this operation.

Abstract: Apparatus and process of laser assisted drilling includes structure and method for receiving laser energy and projecting it onto an object to produce structural changes within the object. Structure and method are also provided for mechanically abrading the structurally perturbed portions of the object. By combining laser and mechanical energy, drilling is quickly and accurately performed.

Abstract: A modified flute drill which prevents non-circular oval shaped drill holes which occur from incidental lateral or non-axial forces imparted by the operator is provided. The design modification is based on relieving, beveling, or dulling of the leading or side-cutting edge of the flutes of the drill bit for most of the length of the drill bit except for an initial specified length of the flutes where the leading edge of the flutes retains its sharpness and side-cutting capacity. The flute modification additionally imparts to the fluted drill a capacity of self-directional stability after the drill begins its penetration into the material being drilled, at the chosen initial angle of orientation of the drill bit, due to the absence of a side-cutting edge on the following major portion of the drill flutes.

Abstract: There is disclosed an endosseous dental implant apparatus. The implant has an elongated, substantially cylindrical body, a distal hollow internal chamber and an open distal end. The distal end has a series of dentate ridges that forms a rotary cutting surface for trephining the bone. Proximally there is provided a dental handpiece adapter. At least one spiral osteogroove is disposed on the external surface of the body, extending from the distal portion generally toward the proximal portion and communicating with a recessed osteoreservoir. At least one osteovent is situated in the osteogroove, and has a leading bevelled margin to promote the ingress of bone fragments therethrough into the internal chamber. The osteoreservoir may incorporate a spiral ridge that defines a continuous spiral groove.

Abstract: A dental prophy cup comprises a flexible body having a cavity formed therein. A rear end of the cavity includes a paste reservoir for storing an abrasive paste. Paste-delivery channels extend forwardly from the reservoir and intersect front and rear circumferentially extending paste-distribution channels. Under the action of centrifugal force occurring during a tooth-cleaning procedure, paste is fed forwardly along the delivery channels and is distributed within the distribution channels. Between the channels is disposed a pattern of ridges which are capable of flexing relative to one another to conform to the shape of a tooth surface.

Abstract: A temperature gauge for dental drills of the type having a dental head to which a drill bur having a throughbore extending to its drill bur tip is removably mounted includes a temperature sensor receivable in the drill bur throughbore for sensing and measuring the temperature at the drill bur tip and a thermometer coupled to the temperature sensor for displaying the temperature at the drill bur tip. A method of measuring the temperature of the drill site in the jaw of a patient being fitted with a dental implant is also disclosed.

Abstract: A dental post is provided comprising a bottom section and a stem with a slot which extends lengthwise through the stem to form a plurality of legs. The legs have wings attached thereto. The wings have cutting surfaces which are used to form indentations in a wall of a tooth bore. Kits are provided comprising the dental post and burs for forming a tooth bore to accomodate the dental post and optionally a core for supporting a tooth crown, a template for forming holes in a tooth and a key for providing support for the core.