The present invention relates to an intra-oral bite device for use with an x-ray recording apparatus for recording the image of at least one oral area of a patient, located by the intra-oral bite device.

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.

The present disclosure relates to a method for carrying out an orthodontic intervention, using a set of orthodontic correction devices, with the aim of transferring via the correction devices at least part of the teeth from an actual position into a corrected target position, and employing several steps (S1, S2, S3, S3′, S4, S5), each correction device being associated with at least one step. In two subsequent steps (S3, S3′) two correction devices (1; 2), which have a substantially identical shape, are used.

A retainer cooperating with a plurality of teeth and configured to stabilize the plurality of teeth, the retainer including at least one elongated arc which is shaped overall adapted to a natural curvature of a lower jaw or an upper jaw, wherein the at least one elongated arc is locally adapted individually to a surface contour of respective abutting teeth, wherein the retainer is machined from a sheet metal plate and includes two mutually parallel surfaces, wherein the sheet metal plate is made from a nickel titanium alloy, preferably a nitinol, wherein the retainer contacts a tooth surface in an installed condition of the retainer, wherein a machined surface of the retainer faces the tooth surface in the installed condition of the retainer, and wherein an upper side or a lower side of the retainer corresponds to an original surface plane of the sheet metal plate.

The invention relates to a root canal instrument having a shank and a working area attached to the shank, wherein the working area consists of a nickel-titanium alloy comprising 38 to 46 at % nickel, 46 to 53 at % titanium and 5.5 to 8.8 at % copper. The invention relates to a root canal instrument having a shank and a working area attached to the shank, wherein the working area consists of a nickel-titanium alloy comprising 38 to 46 at % nickel, 46 to 53 at % titanium and 5.5 to 8.8 at % copper.

Disclosed is a method for producing an orthodontic appliance for securing to a user's teeth in order to carry out an orthodontic treatment, the appliance having an element. The method includes a) gathering information relating to the user's set of teeth; b) using the information to determine at least first and second stable shapes of the element towards which the element should tend to deform during the first and second periods of treatment, respectively; and c) producing and programming the element in such a way that the application of a stimulus during the first period of the treatment renders the second stable shape operational. In certain aspects in step c), a retractable or expansible material is incorporated into the element.

A self-ligating orthodontic bracket system comprising a bracket body, an archwire, a slot receivable for an archwire, either a passive or interactive clip, and a channel capable of receiving the clip. The clip comprises two arms having a combined total width that is greater than the width of the channel.

The invention relates to a blank for an endodontic instrument, obtainable by machining at least one rod by means of wire erosion, preferably selected from the group consisting of electrical discharge machining, wire electrical discharge machining, electrical discharge grinding and electro-chemical machining, wherein an erosion pattern is applied to the at least one rod, wherein the blank has a homogenous hardness.

The invention discloses an improved dental dam (10) for use in dental restoration processes. The dam (10) includes a substantially planar membrane (12), having location portions (14) disposed on the membrane (12) and a guide formation (16) which runs along a major surface of the membrane (12). Additionally the dam (10) includes a clamp arrangement (20), which is engageable with and slidably movable along the guide formation (16). Both the membrane (12) and the clamp arrangement (20) are formed of a shape memory polymer.

Provided is a dental file exhibiting high performance and having high flexibility and excellent root canal followability. A dental file (10) of the present invention includes a working portion (11) in a spiral shape. An outer edge of the sectional shape of the working portion (11) at any position includes a single arc (40) and three or more lines (41, 42, 43). One end of the arc (40) forms a first cutting blade. The three or more lines (41, 42, 43) are positioned inside a virtual circle (50) partially including the arc (40). The length of the arc (40) may be equal to or greater than 1/12 and equal to or less than ⅓ of the circumferential length of the virtual circle (50), or a second cutting blade (16) may be further provided inside the virtual circle (50).