Abstract: The invention relates to a method for manufacturing or modifying an endodontic instrument made from an NiTi alloy, comprising a heat-treatment. The invention further relates to an endodontic instrument, preferably obtained by the method, having superior properties with regard to cyclic fatigue resilience.

Abstract: The invention relates to a method for manufacturing or modifying an endodontic instrument made from an NiTi alloy, comprising a heat-treatment. The invention further relates to an endodontic instrument, preferably obtained by the method, having superior properties with regard to cyclic fatigue resilience.

Abstract: An endodontic obturation point for obturating a dental root canal comprising a core material, an outer material and a coupling element for transmitting ultrasonic waves to the obturation point. The core material comprises an ultrasonic non-deformable material and the outer material comprises an ultrasonic deformable material.

Abstract: A dental scaler apparatus includes a low power transformer that is timed to the operating frequency of a detachable scaler insert connected to the handle of the scaler apparatus by selectively connecting corresponding banks of parallel adjustment capacitors by engaging corresponding switches coupled to each of the adjustment capacitors.

Abstract: A dental scaler apparatus includes a low power transformer that is tuned to the operating frequency of a detachable scaler insert connected to the handle of the scaler apparatus by selectively connecting corresponding banks of parallel adjustment capacitors by engaging corresponding switches coupled to each of the adjustment capacitors.

Abstract: A method of manufacturing a dental post according to the present invention comprises the steps of: (i) overjacketing extrusion of at least one thermoplastic material over at least one filament or yarn, such that the thermoplastic material cross-sectionally enwraps the at least one filament or yarn; (ii) solidifying the extruded product of step (i); (iii) equipping the solidified extruded product of step (ii) with a surface texture, such that the thermoplastic wrapping is not modified in a way as to expose or damage the at least one filament or yarn. The invention allows for more flexibility in the manufacturing of dental posts, especially in generating surface textures of such dental posts.

Abstract: The invention concerns a dental filling material with dual hardening mechanism, wherein i) a first hardening mechanism is based on a photocuring reaction, preferably a radical reaction, and ii) a second hardening mechanism is dependent on H2O as a reactant, especially as a ligand. Preferably, the second hardening mechanism is a gypsum-type reaction. Owing to the expansion of the composition an excellent marginal seal can be achieved, while the first hardening mechanism allows for a rapid cure on demand.

Abstract: A hardenable dental material, exhibiting a reflectivity in the hardened state of preferably more than about 70%, measured according to EN ISO 2813 (1999) with an angle of incidence of 60°. The material provides for improved visual readability in the hardened state.

Abstract: The invention relates to a delivery system for fluid substances, which comprises a plunger-type syringe in the form of a cartridge having at least one injectate chamber, which injectate chamber is provided with an injection plunger, and an attachment mounted on the cartridge at its delivery-side end, characterised in that the attachment is mounted on the cartridge by means of a releasable snap closure.

Abstract: A curing lamp apparatus is used for providing electronic voice information to report a number of operating conditions associated with the curing lamp. The apparatus includes a light sensor for sensing output power, voltage and current sensors for sensing input power, a microcontroller for providing a digital number in response to receiving signals from one or more sensors, a programmed voice circuit for retrieving a voice message signal from a memory, address associated with the digital number, and a transducer for receiving and audibly reproducing the voice message signal.

Abstract: Compression cap for tooth stumps and method of drying a tooth stump The present invention relates to a compression cap (1) for tooth stumps (5) and to a method of drying a tooth stump (5). The compression cap (1) for tooth stumps (5) has a hollow space (7) for receiving an absorbent foam mass (8) surrounding a tooth stump (5). The hollow space (7) has an opening (9) at one end for receiving the reagents (10, 11) for the foam mass (8) and for receiving the tooth stump (5) and is surrounded by walls whose wall thickness (d) is reduced in the direction towards the opening (9). The rim (14) at the opening has a spatial profile (15) of such a kind that the rim (14) at the opening constitutes a seal (16) when the compression cap (1 ) is in the state pressed against the interdental papilla (17) of a tooth stump (5) in the region of the gingival pocket (18) for the sulcus (19).

Abstract: A light for a curing instrument includes a plurality of light sources, each producing an incident light beam. The incident light beams are combined to produce a single output beam, which exhibits a broader spectral width than any of the incident light beams. In one embodiment of the invention, the output beam exhibits an intensity over a spectral range defined by a first characteristic wavelength of a first of the plurality of light sources and a second characteristic wavelength of a second of the plurality of lights sources such that the intensity varies by no more than 25 percent over the range. In another embodiment of the invention including a one or more blue LED light sources among the plurality of light sources, at least one white LED is included in the plurality of light sources in order to generate an output light beam having a component portion that is characterized as green.