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1. (WO1982003978) DENTAL FILE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1982/003978    International Application No.:    PCT/US1981/001016
Publication Date: 25.11.1982 International Filing Date: 30.07.1981
A61C 5/02 (2006.01)
Applicants: INVENTIVE TECHNOLOGY INTERNATIONAL, INC. [US/US]; 71 Wilson Avenue, Johnson City, TN 37601 (US)
Inventors: McSPADDEN, John, Thomas; (US)
Agent: LUEDEKA, Edwin, Miller @; Luedeka & Fitch, 1230 Park National Bank Building, Knoxville, TN 37902 (US)
Priority Data:
263,406 14.05.1981 US
Abstract: front page image
(EN)A dental file which is useful in endodontia for removing dead or damaged tissue from a curved tooth root canal while minimizing the tendency to form ledges and slits. The file has a flexible tapered shank (12) which has a cutting surface (20, 22) on its periphery and a pilot (15) projecting from the tapered end of the file for guiding the shank (12) along the curved root canal preventing the cutting surface (20, 22) near the end of the shank (12) from gouging into the wall of the curved root canal or penetrating too far through the apical foramen of the root canal. A set of dental files is also disclosed in which the files in the set increase in diameter from one file to the next larger file in the set. In such a set the diameter of the pilot on each file is substantially the same for all files in the set.
(FR)Lime dentaire utile dans l'endodontie pour extraire le tissu mort ou endommage d'un canal courbe de racine dentaire tout en reduisant au minimum la tendance a former des rebords et des fentes. La lime possede une tige conique flexible (12) qui presente une surface de coupe (20, 22) sur sa peripherie et un pilote (15) en saillie sur l'extremite conique de la lime et servant a guider la tige (15) le long du canal courbe de la racine, de maniere a empecher la surface de coupe (20, 22) a proximite de l'extremite de la tige (12) de gouger la paroi du canal radiculaire courbe ou de penetrer trop loin dans l'orifice apical du canal radiculaire. Un ensemble de limes dentaires est aussi decrit dans lequel le diametre des limes de l'ensemble augmente d'une lime a l'autre. Dans un tel ensemble le diametre du pilote de chaque lime est sensiblement le meme pour toutes les limes de l'ensemble.
Designated States: AU, BR, DK, JP.
European Patent Office (AT, CH, DE, FR, GB, SE).
Publication Language: English (EN)
Filing Language: English (EN)