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US 2006/0068362 A1Published application
Endodontic instrument with depth markers
AssigneeOrmco Corporation
InventorsJohn Desrosiers, Carlos Aloise, Gary Garman, Brian Glicker
Life of this patent
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AssigneeOrmco Corporation
InventorsJohn Desrosiers, Carlos Aloise, Gary Garman, Brian Glicker
Estimating the term…
An endodontic instrument includes an elongated shaft having a tip and a portion capable of being inserted into the root canal of a tooth. The shaft further includes a plurality of depth markers which are perceivable in a radiograph for indicating the depth of the tip within the root canal. The markers may comprise bumps having a diameter greater than the diameter of the elongated shaft by an amount sufficient to distinguish the markers from the shaft on the radiograph. Alternately, or additionally, the markers may have a radiopacity different from the radiopacity of the shaft by an amount sufficient to distinguish the markers from the shaft on the radiograph. The shaft may be selectively coated with paints, dyes, and/or inks having radiopaque properties. The markers may take the form of circumferential rings or other indicia such as numerals, letters and/or geometrical shapes.
An endodontic instrument configured for insertion within a root canal of a tooth while acquiring a radiograph of the tooth, the instrument comprising:
An endodontic instrument configured for insertion within a root canal of a tooth while acquiring a radiograph of the tooth, the instrument comprising:
A method of estimating the distance between a tip of an endodontic instrument and an apex of a root canal of a tooth, the endodontic instrument carrying a plurality of markers perceivable in a radiograph of the tooth, the method comprising:
Dependencies are inferred from the claim text.