8 results about "Endodontic instrument" patented technology

Method for electronically indicating a concentration of an irrigation solution in a root canal (RC) of a tooth (T), using a device able to be electrically connected to an endodontic instrument engaged in the canal and to a labial electrode, and including a screen to display the progression of the instrument in said canal relatively to a critical apical point of reference such as the cemento-dentinal junction (CDJ), said device being furthermore able to measure, in the vicinity of said point of reference, by conductimetry, a concentration of an electrolyte irrigation solution injected into the root canal.

The invention relates to the field of dental pulp surgical instruments, and discloses a device for quickly cleaning diseased tissues around apical periodont.The device comprises a guide head, a scraping rod, scraping thorns, an adjusting rod, a main handle, an adjusting knob and an annular clamping groove; the guide head is fixed to the top end of the adjusting rod, the elastic scraping rods are evenly distributed along the circumference of the conical bottom of the guide head, the scraping thorns and the scraping rods are integrally formed, the scraping thorns are in a barb shape and evenly distributed in the length direction of the scraping rods, and the two ends of the scraping rods are connected with the conical bottom of the guide head and an annular clamping groove in the front end of the main handle respectively. And the adjusting knob is sleeved outside the main handle and is in threaded engagement with the adjusting rod. A linkage adjusting structure of the adjusting knob, the adjusting rod and the scraping rod and an elastic material are adopted, and the device can be contracted, unfolded and bent, so that the device is matched with a periapical bone cavity structure, periapical lesion tissues are thoroughly scraped and cleaned, the problems that a manual curette is poor in bone cavity adaptability and has a blind area are solved, the scraping efficiency is high, operation is standardized and safe, bone tissue damage is avoided, and the device is suitable for popularization and application. The cleaning effect is good and the view is clear.

The present application relates to the field of endodontic instruments, and discloses a device for quickly cleaning periapical lesion tissue, comprising a guide head, a scraping rod, a scraping spike, an adjusting rod, a main handle, an adjusting knob and a ring-shaped clamping groove; the guide head is fixed at the top end of the adjusting rod, the elastic scraping rods are evenly distributed along the circumference of the cone bottom of the guide head, the scraping spike is integrally formed with the scraping rod, the scraping spike is in the shape of a barb and is evenly distributed along the length direction of the scraping rod, the two ends of the scraping rod are respectively connected to the cone bottom of the guide head and the ring-shaped clamping groove at the front end of the main handle, the elastic adjusting rod penetrates through the channel of the main handle, and the adjusting knob is sleeved on the outside of the main handle and is in threaded engagement with the adjusting rod. The linkage adjusting structure of the adjusting knob-adjusting rod-scraping rod and the elastic material can be contracted, expanded and bent, so as to adapt to the structure of the periapical bone cavity, realize complete scraping and cleaning of the periapical lesion tissue, solve the problems of poor adaptability and blind area of the hand-held curettes, have high scraping efficiency and standardized operation, are safe and do not cause damage to bone tissue, have good cleaning effect and clear vision.

The invention relates to an endodontic instrument (1) extending along an axis (a) and comprising an engagement portion (20) connecting a tip (15) to a blade (14), and having a geometry designed to facilitate the endodontic instrument (1) in following the canal trajectory; - in a plane containing the axis (a), the engagement portion (20) having an engagement profile (21) defined, within an orthonormal coordinate system, by: - an abscissa (x) measured from the tip (15) towards the root (11), and - an ordinate (y) which is dependent on the abscissa (x); - the ordinate (y) being smaller on the tip (15) side than the ordinate on the blade (14) side, characterised in that the engagement profile (21) is continuous; and - an increase in the ordinate (y) strictly decreases from the tip (15) towards the blade (14).

The invention describes a method and an apparatus for controlling an electric motor, in particular for moving an electric motor (9) of an endodontic instrument. The device has a first sensor (8) and a control unit (2). The control unit (2) has a drive unit (4), a second sensor (6) and a processing unit (3). The processing unit (3) is configured to cause the endodontic instrument (7) to perform a sequence of motions (M1, M2). The motion sequence (M1, M2) comprises a continuous forward motion (M1) and at least one alternating motion (M2). The sequence may comprise additional alternating motion (M3) and / or reverse motion (M4). The number and sequence of motions to be performed in the sequence depends on a set of predefined thresholds measured by means of the sensor reflecting the torque load applied to the instrument.

Endodontic Instrument Sterilization Tray

Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use.

An endodontic instrument of this invention has lower torque but greater flexibility and more chip space compared to the prior art. In some embodiments, only two flutes are spirally wound around the length L of the instrument to form two unsupported cutting edges between D2 and D16, which merge to form a support around D1. The tip end is rounded.The helical angle α increases from the handle end towards the tip end, the number of spirals per unit length being at least twice as high towards the tip end as towards the handle end. The cross-section of length L consists of two convex portions that intersect at each cutting edge, or a waveform with a concave portion and a convex portion that intersect at each cutting edge. The cross-section occupies less total area than that of an endodontic instrument of the same size with a triangular cross-section and provides more space for chips.