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Publication numberUS674419 A
Publication typeGrant
Publication dateMay 21, 1901
Filing dateMar 9, 1901
Priority dateMar 9, 1901
Publication numberUS 674419 A, US 674419A, US-A-674419, US674419 A, US674419A
InventorsCharles T Kinsman
Original AssigneeCharles T Kinsman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Root-canal filling for teeth.
US 674419 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Patented May 2|, I90I.

No. 674,4l9. c. T. KINS'MAN.


(Application filed Mar. 9, 1901.)

(No Modal.)


" z? a B y%(4f c f I of Amy TH: nomus PETERS my. wcraumcq wunmcfon, 0. c



SPECIFICATION forming part of Letters Patent No. 674,419, dated May 21, 1901. A h ati filed March 9, 1901. Serial No. 50,495. (No model.)

T0 (tZZ 1071,0721, it may concern.-

Be it known that 1, CHARLES T. KINSMAN, a citizen of the United States, residing at Williamstown, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Root-Canal Filling for Teeth; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in root-canal fillings for teeth; and it consists of a central pin of stiff noncorrodible metal or alloy around which is a compound composed of gutta-percha, zinc oxid, and yellow resin, the gutta-percha compound being made to cling tightly to the pin by first roughening the latter by forming small barbs which are coated with the comto harden.

filling the latter, they are too soft to follow narrow or crooked canals. If the fillings are not softened, they do not completely fill the canal, and therefore do not accomplish the purpose for which a root-canal filling is intended.

The object of this invention is to obviate these defects and to produce fillings which cannot double upon themselves or crush together while being inserted in any shape or size of canal, as the metal is made small enough to enter the smallest canals and stiff enough to follow them and will carry sufficient gutta-percha compound to completely fill the canal, regardless of its shape, the excess of the compound being easily pressed back out of the canal and removed.

Owing to the strength of my improved fillings, they may be easily removed, whereas cement or small gutta-percha fillings are difficult to remove.

My invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this application, and in which Figure 1 is an enlarged perspective View of one of my root-fillings for teeth. Fig. 2 is a central longitudinal section through one of the fillings, said filling also very much enlarged- Fig. 3 is a View of the central rigid metallic portion of the filling.

Reference now being had to the details of the drawings by letter, A designates the central skeleton of the filling, made, preferably, of any suitable non-corrodible metal or alloy, and its circumference is roughened by forming short barbs 13, whereby when the compound of gutta-percha, zinc oxid, and yellow resin is applied thereto and allowed to harden it will cling tightly thereto, and when the fill ing is inserted in the root-canals it will follow the minute and crooked canals, and if for any purpose it is desired to remove the filling it may be easily done, owing to the rigid nature of the filling.

In placing the filling the same should be slightly larger than the size of the canal, and after the filling has been warmed gentlyover a flame it should be dipped in some antiseptic oil to lubricate the filling, after which it should be pressed gently in place.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is

A root-canal filling for teeth, consisting of a central metallic skeleton coated with a compound of gutta-percha, zinc oxid and yellow resin, as set forth.

In testimony whereof I hereunto affix my signature in presence of two'witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3209458 *Dec 5, 1960Oct 5, 1965Rosen Louis JEndodontic cutter
US3855702 *Nov 13, 1972Dec 24, 1974Malmin OEndodontic operating and sealing method and apparatus therefor
US4348182 *Dec 31, 1980Sep 7, 1982Shirota Denki Kozai Kabushiki-KaishaReinforcement wire for material for the impression of decayed tooth
US5028228 *Mar 29, 1989Jul 2, 1991G-C Dental Industrial Corp.Apparatus for making dental root canal filling points
US5051093 *Jun 5, 1989Sep 24, 1991Fitzmorris Bernard ARoot canal filling device including releasably reusable inserter tool
US5061411 *Apr 6, 1990Oct 29, 1991G-C Dental Industrial Corp.Method for making dental root canal filling points
US6312261Jan 12, 2000Nov 6, 2001Ralph C. MaysEndodontic obturator with removable carrier and method of use thereof
US6447297May 12, 2000Sep 10, 2002Jeneric/Pentron, Inc.Endodontic post system
US6644972Aug 9, 2001Nov 11, 2003Ralph C. MaysEndodontic obturator with removable carrier and method of use thereof
US7086864Jun 6, 2002Aug 8, 2006Pentron Clinical Technologies, LlcEndodontic post system
US7090499Nov 11, 2003Aug 15, 2006Barbara E. Mays, legal representativeEndodontic obturator with removable carrier and method of use thereof
US7163401Aug 1, 2003Jan 16, 2007Pentron Clinical Technologies, LlcEndodontic post and obturating system
US7168952Aug 1, 2003Jan 30, 2007Pentron Clinical Technologies, LlcEndodontic post and obturating system
US7204874Oct 24, 2002Apr 17, 2007Pentron Clinical Technologies, LlcAn endodontic filling material comprising a biodegrable thermoplastic polymer and a bioactive substance
US7204875Nov 26, 2002Apr 17, 2007Pentron Clinical Technologies, LlcDental filling material
US7211136Jun 18, 2003May 1, 2007Pentron Clinical Technologies, LlcApplying an etchant to the walls of the root canal;applying a sealant into the root canal;inserting a filling material into the canal, wherein the filling material comprises a thermoplastic polymer matrix, an adhesive, and optionally, a bioactive filler
US7252508Dec 13, 2002Aug 7, 2007Pentron Clinical Technologies, LlcEndodontic obturator
US7303817Aug 6, 2004Dec 4, 2007Weitao JiaComprises biodegradable thermoplastic polymer (polylactic acid, polyglycolic acid); for cavities and root canals
US7318726 *Jul 19, 2005Jan 15, 2008Nordin Harald ETooth root canal point
US7750063Dec 21, 2006Jul 6, 2010Pentron Clinical Technologies, LlcDental filling material
US7837471Sep 19, 2007Nov 23, 2010Pentron Clinical Technologies, LlcDental filling materials and methods of use
USRE35070 *Sep 24, 1993Oct 24, 1995John T. McSpaddenRoot canal filling device including releasably reusable inserter tool
Cooperative ClassificationA61C5/04