Siemens Aktiengesellschaft

Dentsply Sirona Inc.

Sirona Dental Systems Gmbh

Ralf Sutter

Lutz Beerstecher

Matthias Rein

Siegfried Goisser

Metin Ertugrul

David Hruza

Raimund Stetter-Alle

Karl Trackl

Thomas Bierbaum

Hermann Landgraf

Thomas Jerger

Bernd Oehme

Jan-Paul Schermuly

Joachim Peuckert

Alexander Muhlbeyer

Steffen Muller

Christian Eberhard

Steffen Müller

Jan Paul Gerlach

Alexander MÜHLBEYER

Francesco Zanata

Stefan Ehrlich

Jens Strackeljan

Dietrich Behr

A dental laser comprises a hand piece having a grip region and a treatment tip with an outlet point, arranged at a distal end, for laser light, and further comprises a light source and light conduction means for providing laser light at the outlet point. The laser light has a wavelength of 445±20 nm, in particular, 445±10 nm and more particularly 445±5 nm, and an optical power output is provided at the outlet point in a power range of at least 2 W, advantageously at least 3 W and, in particular, 3.5 W. In another dental laser the laser light has a wavelength of 410±10 nm, and an optical power output is provided at the outlet point in a power range of no less than 1 W to no more than 2 W.

Dental laser for the treatment of soft tissue

A dental hand piece or angle piece including a rotating tool, which is driven via a rotating drive element disposed in a housing, wherein the rotating drive element is mounted in the housing by a radial rolling bearing, wherein the rolling bearing comprises an axial abutment surface and the housing comprises an axial countersurface, and wherein the rolling bearing is axially preloaded with respect to the housing by a spring elementand has a coefficient of friction for the static friction of the abutment surface to the countersurface or the abutment surface and the countersurface to the spring element that is at least 0.16 in the lubricated state and at least 0.25 in the unlubricated state.

Dental hand piece or angle piece with a rotating tool

The invention relates to an adapter for connecting a dental instrument to be operated with compressed gas to a compressor supplying the compressed gas, and to a control unit as well as a treatment unit comprising the adapter, wherein the adapter has at least one first input for the compressed gas of a compressor, a second input for a control signal, an output for connecting to the dental instrument, and a valve between the first input and output that is controllable by the control signal.

Adapter for connecting a compressed gas operated dental instrument to a compressor

A dental handpiece () having a drive () of a tool (), which drive is located in a head housing (), 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 () arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing () in a support () of the head housing () on a side of the drive chamber facing the tool. The rolling bearing has an outer race (), which is supported against the head housing () radially in the support () in the area of a raceway () and which has a sub-area (), the outside diameter Dof which is reduced compared to the outside diameter Din the area of the raceway (). The head housing has a housing projection (), which extends into the area of the reduced outside diameter D, and the media-conducting line () runs at least partially through said housing projection ().

Dental handpiece having a rolling bearing

A dental apparatus that includes a turbine, a rotor, and a disruptive contour. The turbine drives a tool by compressed air. The rotor is arranged in a turbine compartment and rotates about its longitudinal axis. The rotor includes a plurality of blades that extend up to a front side of the rotor. The disruptive contour is at least one protrusion on a wall opposite the front side of the rotor which extends over a height in a direction of the longitudinal axis of the rotor.

Dentists' preparation instrument

A dentists' preparation instrument () comprises a turbine () for driving a tool () using compressed air, and a rotor () that is arranged in a turbine compartment (), rotates about a longitudinal axis (), and has blades () extending to a face () of the rotor (). The turbine compartment () has a discharge port () for the compressed air towards a returning air duct (). Said discharge port () is disposed in such a way that both the face () of the rotor () and parts of the blades () sweep past the discharge port () as the rotor rotates about the longitudinal axis (). For deceleration purposes, the rotor () has a deceleration contour () on the face (), said deceleration contour being formed by projections (), and the turbine compartment () has a deceleration contour chamber () inside which the deceleration contour () is accommodated. The discharge port () in part also extends across the deceleration contour chamber ().

The invention relates to a laser handpiece, an exchangeable fiber-optic insert, and a control unittherefor. The laser handpiececomprises a optical waveguide, which is connected to a light coupling site in a base memberand in which the application elementfor laser light is exchangeably attached to the base member. The base memberis mounted in a sleeve-type gripfor axial displacement therein. The light guidecan be wound around a control devicewhich has an annular gapfor this purpose and a lower housing partwhich is offset from an upper housing part. An exchangeable fiber-optic insertacting as an application element is provided with a sleeveserving as protection during transportation and as an assembling tool.

Laser handpiece, exchangeable fiber-optic insert and control unit therefor

A method for cleaning medical instruments including dental instruments having internal channels and internal moving parts comprises cleaning the external surface and internal channels and parts by a jet of cold water followed by a jet of preheated water, then intensely after-cleaning and disinfecting followed by lubricating the moving parts, then sterilizing and drying and cooling.

Method for the hygienic preparation of medical instruments

A method and apparatus for cleaning medical instruments including dental instruments having internal channels and internal moving parts comprises cleaning the external surface and internal channels and parts by a jet of cold water followed by a jet of preheated water, then intensely after-cleaning and disinfecting followed by lubricating the moving parts, then sterilizing and drying and cooling.

Apparatus for the hygienic preparation of medical instruments

A cassette for the acceptance of medical instruments, and preferably dental instruments, to enable a hygienic treatment of the instruments when the cassette is placed into a chamber of an apparatus that is capable of being closed pressure-tight. The cassette contains at least one adapter for holding at least one instrument. The adapter will have line channels for the delivery of treatment agents to the interior of the instrument and the adapter can contain a control valve that will close the line channels given an adapter not occupied with an instrument.

Cassette for treating medical instruments

A method for cleaning medical instruments, particularly dental articles and dental instruments, with a cleaning fluid applied in a pulsating fashion comprises a step of gas being supplied to the cleaning fluid under high pressure in a pulsating fashion in pulse pauses of the fluid. The apparatus comprises a cassette into which the articles are placed and the cassette is inserted into a chamber of the apparatus which is closable pressure-tight. The cassette can contain adapters for holding the articles and the apparatus includes means for supplying both pulsating cleaning fluid as well as the pulses of gas or air.

Apparatus for intensive cleaning of medical articles

A dental instrument for treating teeth with a laser beam has an output by a transmission element arranged in the head part of the instrument. The instrument is supplied with a gaseous agent which is conducted at least at the application side across the optics, particularly across the optical boundary surface of the transmission element facing toward the light exit side and will then flow out of the head part into the beam exit direction.

Dental instrument for treating teeth with a laser beam

A valve arrangement for controlling a suction stream in a dental suction system, wherein the valve controlling the flow contains a closure element that defines a valve space on one side and a control space on the opposite side. The closure element, such as a membrane, is urged closed when the pressure in the control space is greater than the pressure in the valve space and the movement of the closure element is obtained by actuation of various control valves which control flow in effective lines extending to the control space, which lines have different effective cross sections so as to control the amount of movement of the closure element toward the closed position.

Growing community of inventors

Weinheim, Germany

Ralf Sutter