3m Innovative Properties Company

Solventum Intellectual Properties Company

Korbinian Gerlach

Stefan K Welker

Rudolf Schmid

Joel D Oxman

Malte Korten

Christian A Richter

Bastian P Kirchner

Gregory A Kobussen

Johannes Fink

Jack Wing Lai

Andreas M Geldmacher

Ralf Kelz

Angelika Hofmann

Douglas L Elmore

Thomas K Müller

Günther H Schlosser

Ralf M Kelz

Thomas K MÜLLER

A dental light polymerization device has an intra-oral tip portion and a handle portion. The dental light polymerization device has a polymerization light source and a light mixing element. The polymerization light source has a first LED exhibiting a first light emission peak wavelength and a second LED exhibiting a second light emission peak wavelength. The first and second LED each are configured for emitting visible light within a wavelength range of 380 nm to 495 nm. The first and second light emission peak wavelength differ from each other by at least 10 nm. The light mixing element is formed of a solid transparent body that has a rear portion and an adjacent front portion. The rear portion has the shape of a square-based truncated pyramid. Further, the front portion has a convex shape. The rear portion forms a rear end of the light mixing element and the front portion forms a front end of the light mixing element. The rear end forms a first diagonal dimension and the rear portion, adjacent the front portion, forms a greater second diagonal dimension. The light mixing element is arranged with the rear end facing the polymerization light source and with the front end facing away from the polymerization light source.

Dental light polymerization device

A device () for spinning a 3D printed workpiece (). The device has a rotor () for spinning about a spinning axis (A) and a receptacle () for holding the workpiece (). The receptacle () is pivotally attached to the rotor () for swiveling about a swivel axis (B) that is transverse to the spinning axis (A). The pivotal attachment enables swiveling of the receptacle () between a first angular orientation relative to the spinning axis (A) and a different second angular orientation relative to the spinning axis (A). The device () further has a balancing weight () that is movably arranged relative to the receptacle (). The balancing weight () is lockable at different distances relative to the receptacle ().

Device for spinning a workpiece

A dental treatment system has a light irradiation device () and an image display (). The light irradiation device has a polymerization light source () for emitting blue light and a camera () for capturing a series of images. The system is set up for generating a first marker () and a second marker () superimposed with the images and to display the first marker () in a fixed positional relationship to an image pattern recognized in a first and in a second image of the series of images and to display the second marker () in a fixed positional relationship to an image area underlying the images.

Dental treatment system

A dental light irradiation device has sensing means for sensing a change of a position of the device, and an indicator for physically indicating the position change. The invention helps controlling the positioning of the device during use.

Dental irradiation device

Cure monitoring systems for and methods of monitoring polymerizable material to determine the degree of curing of the polymerizable material. A monitoring light source delivers visible monitoring light at one or more different visible wavelengths and a visible light detector detects the monitoring light diffusely reflected by the polymerizable material. The monitoring light has a wavelength of maximum emission (&#x3bb;max-mon) that does not effectively induce polymerization of the polymerizable material. Change in intensity of the monitoring light reflected from the polymerizable material is used to determine when a selected degree of curing is reached in the polymerizable material.

Cure monitoring systems and methods

Growing community of inventors

Gauting, Germany

Korbinian Gerlach