Abstract: Dentistry instrument with visual control having in its handle (2) pressure fluid supply lines (11, 12) as well as an optical device (14) for lighting and visualization with video transmission leading to an observation window (15), protected by a zone of turbulence generated by a pressure fluid, the instrument also including an image transmission unit and a data processing unit followed by a monitor for visualizing and processing the image.

Abstract: The invention relates to a process for filling a cavity within a tooth or mold, and also to a tool intended for the implementation of the process.

Abstract: The present invention relates to the positioning and fixation by gluing of pieces.According to the invention, the piece adapted to be connected to a support, for example a prosthesis, particularly dental prosthesis (3), comprises an opaque region (7) associated with a rear translucent region (8) and corresponding to that part coming opposite the receiving support wall; the gluing interface (12) is constituted by a photopolymerizable resin; an optical fiber (9) passing through the opaque region (7) makes it possible to illuminate the interface (12) through the translucent part (8), ensuring photopolymerization of the adhesion resin constituting the interface and to ensure gluing of the two pieces.