Abstract: A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).

Abstract: A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).

Abstract: The invention relates to a dental preparation instrument that includes a tool that rotates in an alternately reversible manner. The preparation instrument has a drive for the tool. The drive provides a continuous fully rotational motion, and a gearing is arranged before the tool. Said gearing converts the continuous fully rotational motion of the drive into an alternately reversing rotational motion, which is continuous as viewed over several reversals.

Abstract: The invention relates to a laser handpiece 1, an exchangeable fiber-optic insert 10, and a control unit 70 therefor. The laser handpiece 1 comprises a optical waveguide 35, which is connected to a light coupling site in a base member 21 and in which the application element 10 for laser light is exchangeably attached to the base member 21. The base member 21 is mounted in a sleeve-type grip 3 for axial displacement therein. The light guide 10 can be wound around a control device 70 which has an annular gap 73 for this purpose and a lower housing part 75 which is offset from an upper housing part 74. An exchangeable fiber-optic insert 10, 27 acting as an application element is provided with a sleeve 80 serving as protection during transportation and as an assembling tool.

Abstract: The invention relates to a laser handpiece 1, an exchangeable fiber-optic insert 10, and a control unit 70 therefor. The laser handpiece 1 comprises a optical waveguide 35, which is connected to a light coupling site in a base member 21 and in which the application element 10 for laser light is exchangeably attached to the base member 21. The base member 21 is mounted in a sleeve-type grip 3 for axial displacement therein. The light guide 10 can be wound around a control device 70 which has an annular gap 73 for this purpose and a lower housing part 75 which is offset from an upper housing part 74. An exchangeable fiber-optic insert 10, 27 acting as an application element is provided with a sleeve 80 serving as protection during transportation and as an assembling tool.

Abstract: The invention relates to a dental preparation instrument (1), comprising a tool (6) that rotates in an alternately reversible manner, wherein the preparation instrument (1) has a drive (2) for the tool (6). The drive (2) provides a continuous fully rotational motion (7), and a gearing (43) is arranged before the tool (6). Said gearing converts the continuous fully rotational motion (7) of the drive (2) into an alternately reversing rotational motion (8), which is continuous as viewed over several reversals.

Abstract: A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).

Abstract: The invention relates to a laser handpiece 1, an exchangeable fiber-optic insert 10, and a control unit 70 therefor. The laser handpiece 1 comprises a optical waveguide 35, which is connected to a light coupling site in a base member 21 and in which the application element 10 for laser light is exchangeably attached to the base member 21. The base member 21 is mounted in a sleeve-type grip 3 for axial displacement therein. The light guide 10 can be wound around a control device 70 which has an annular gap 73 for this purpose and a lower housing part 75 which is offset from an upper housing part 74. An exchangeable fiber-optic insert 10, 27 acting as an application element is provided with a sleeve 80 serving as protection during transportation and as an assembling tool.

Abstract: The invention relates to a dental hand instrument comprising components which can be displaced in relation to each other. Said components are in contact with each other on the surface. Said dental hand instrument also comprises a lubricant for lubricating said components. At least one of the components comprises, on at least part of the surface, a coating containing a lubricant.

Abstract: A dental instrument with a drive tool and a transmission device. The instrument has a neck drive with a drive shaft housed within a first and second shank. The drive shaft has a toothed wheel at one end and the transmission device at the other end. The transmission device has at least one magnetic and/or magnetizable clutch element and means for influencing the transmission torque of the magnetic and/or magnetizable clutch elements.

Abstract: A dental handpiece has a coupling member in which a passage for delivering a coolant to a discharge nozzle at the head part is provided. In order to prevent a flow-back of contaminated fluid with bacteria past the handpiece, a check valve is provided and comprises a check valve member disposed in a recess that extends radially inward from an outer surface of the coupling member and receives a flexible portion for closing a portion of the passage. The flexible portion is such that when the fluid is turned off, a suction in the fluid line will cause the flexible member to be pressed against the base of the recess and to prevent dripping from the exit nozzle.

Abstract: A dental instrument deposit table includes a base member, which has an arrangement for mounting it, and a cover unit which unit includes a deposit surface for receiving the instruments and holders for receiving handpieces, such as handpieces having hoses and handpieces having cables secured thereto. The cover unit is removably mounted on the base member, which, preferably, has a catch member for grasping a rear edge of the cover member and a catch hook for engaging a front lower edge of the cover member to hold the cover member on the base member. Handles are preferably provided on the cover member, which handles can be used for positioning the instrument deposit table.

Abstract: In order to provide a surface in a gripping region of a dental handpiece that meets the requirements of being optimally smooth for hygienic reasons and also to provide an adequate non-slip surface, the dental handpiece has a plurality of thin lines arranged in line patterns having a roughened surface in the gripping portion. These lines or line patterns extend in a longitudinal direction and may have portions that extend at an angle to the longitudinal portion, and these patterns are arranged at least in two quadrants of the circumference of the grip part that preferably lie diametrically opposite one another.

Abstract: A catch mechanism for latching a shank of a head housing in a guide sleeve of a grip piece which latch mechanism includes stop surfaces engaged by catch surfaces characterized by an actuation element being carried on the grip part and movable radially inward to shift the catch surfaces from a first position engaged with the stop surfaces to a second position disengaged from the stop surfaces. In one embodiment, the catch surfaces are carried on a shank of the head part and the stop surfaces are on a guide sleeve of the gripping part. In other embodiments, the stop surfaces are provided on the shank of the head part and the catch surfaces are formed by an element carried on the guide sleeve.