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| Number | Title | Issue Date |
| 4571180 | Dental instrument A dental instrument is attachable to a tooth whose apex is to be located. Indicator means, composed of a material that produces a visible image on a radiograph, is adjustably coupled to the mounting means to permit adjustment of the indicator means relati... | 02/18/1986 |
| 4557690 | Accessory for use in dentistry An accessory for use in pricking depth-indicating washers on to dental reamers comprises a body constituting a receptacle. The washers which are located in the receptacle are brought into a free space of the body within which they are juxtaposed. They suc... | 12/10/1985 |
| 4538989 | Dental reamer A dental reamer adapted for removing damaged nerve tissue and dead or injured cell material from the root canal of a tooth is formed with a tapered shank with at least two oppositely disposed continuous helical flutes formed along at least a part of its s... | 09/03/1985 |
| 4536159 | Endodontic instrument An improved endodontic instrument includes a tapered working portion defined on a flexible shaft. The working portion includes a plurality of spiral rotationally bi-directional cutting edges thereon. The instrument includes a tapered tip defined on the fl... | 08/20/1985 |
| 4536156 | Instrument for the treatment of dental canals An instrument for use in the treatment of dental canals. The instrument includes a tool such as a pulp-burr or reamer connected by a friction coupling or slip-clutch to a mandrel driven by power to rotate the tool. Should the tool jam in a dental canal, t... | 08/20/1985 |
| 4518356 | Utrasonic dental file and method of determining failure resistant lengths thereof An ultrasonic endodontic file that is resistant to failure from fracturing and breaking during operation by having an ideal length, which if increased or decreased by more than 1 mm, will result in increased file breakage.... | 05/21/1985 |
| 4462802 | Dental root marking and measuring instrument for endodontic surgery A dental root marking and measuring instrument used for determining the position of the apex of a dental root and measuring the thickness of the alveolar bone facing the lip comprising a main body having a mounting portion, a reamer on the mounting portio... | 07/31/1984 |
| 4443193 | Endodontic instrument An improved endodontic instrument includes a tapered working portion defined on a flexible shaft. The working portion includes a plurality of spiral rotationally bi-directional cutting edges thereon. The instrument includes a tapered tip defined on the fl... | 04/17/1984 |
| 4382788 | Working well A working well is provided for use during root canal therapy and comprises a base with a closed annular side wall and an elongated stem secured to and extending vertically upwardly from the base. A holder for a plurality of dental implements, such as broa... | 05/10/1983 |
| 4353694 | Dental kit for performing root canals A novel dental kit is provided which contains all of the necessary implements, instruments, medicaments and supplies for performing root canal therapy. The kit comprises a housing having a pair of spaced rails for supporting a plurality of hand held denta... | 10/12/1982 |
| 4340364 | Endodontic test file An endodontic test file for use in root canal therapy for quickly and accurately measuring the length between the crown occlusal surface and the apex of the root canal without the necessity of x-rays. The test file has a smooth tapered shank with calibrat... | 07/20/1982 |
| 4337038 | Electrolytic implement and method for removing metal pieces left in root canals of teeth In an electrolytic method of and implement for removing metal pieces left in root canals of teeth, a metal needle as the positive electrode and a metal pipe as the negative electrode are used to establish an electrolytic reaction within the root canals to... | 06/29/1982 |
| 4332561 | Dental file A dental file is disclosed which is particularly useful in endodontia for removing dead or damaged tissue from a curved tooth root canal. The file has a flexible tapered shank which has a cutting surface on its periphery and a pilot projecting from the ta... | 06/01/1982 |
| 4321040 | Endodontic instrument An endodontic instrument is described which includes a handle from which extends an endo blade. The handle includes an elongated sleeve member formed of resilient material which surrounds a core member secured within the sleeve member. The core member has... | 03/23/1982 |
| 4299571 | Dental file Disclosed is a dental file for use in cleaning out or extirpating root canals, particularly those which are curved, wherein the file which conventionally is provided with cutting or abrading flutes, typically in a spiraled manner, is also provided with a ... | 11/10/1981 |
| 4280808 | Endodontic file holder Ring-like apparatus for use in handling endodontic files. The apparatus includes a socket member forming a tapered socket having a larger upper end and a smaller lower end. A deformable tapered cushion is receivable in the socket, with a portion of the cu... | 07/28/1981 |
| 4268251 | Boring needle device for treatment of a dental root canal PCT No. PCT/JP78/00026 Sec. 371 Date July 17, 1979 Sec. 102(e) Date July 16, 1979 PCT Filed Nov. 15, 1978 PCT Pub. No. WO79/00300 PCT Pub. Date May 31, 1979 A boring needle device for treatment of a dental root canal has a boring needle useful upon treati... | 05/19/1981 |
| 4260379 | Endodontic instrument An endodontic instrument formed by twisting a tapered blank which in cross section is ground to an oblique parallelogram, the obtuse angles of the oblique parallelogram cross section being between 105°-120°.... | 04/07/1981 |
| 4251214 | Clamping handle for tooth root canal instruments A clamping handle for holding a tooth root canal instrument is of the kind with a screw head formed thereon and an axial bore through the handle body and the screw head for the accommodation of an instrument shaft, a screw element screwable onto the screw... | 02/17/1981 |
| 4243388 | Dental hand engine A dental hand engine for driving a reamer for widening root canals, which is characterized in the provision of a control device which electrically senses the time when a forward end of the reamer reaches a radical apex for automatically stopping the engin... | 01/06/1981 |
| 4231738 | Canal instrument for eliminating interference, widening the opening and the contemporaneous flared reaming of the first two-thirds of the dental radicular canals Disclosed herein is a canal instrument for eliminating interference and achieving the widening of the opening and the contemporaneous flared reaming of the first two-thirds of the dental radicular canals, the instrument being designed in such a way that o... | 11/04/1980 |
| 4229168 | Contra-angle ultrasonic endodontic instrument A contra-angle ultrasonic endodontic instrument is described which includes, basically, a head mechanically coupled to the ultrasonically driven shaft of an endodontic instrument. The head includes means, such as one or more holes, to receive a shaft of a... | 10/21/1980 |
| 4217098 | Device for limiting the penetration of dental root canal instruments A centrally-bored cylindrical abutment member is fitted over the shank of a root canal instrument and held against the instrument handle or head by elastic clipping means acting on the instrument handle, or on a handpiece carrying the instrument. The thic... | 08/12/1980 |
| 4212639 | Measuring apparatus for setting the correct penetration depth of root canal instruments A measuring device for setting the correct length or penetration depth of root canal instruments comprising relatively movable lower and upper portions and scale means cooperating with said two portions to enable accurately setting the intended depth of p... | 07/15/1980 |
| 4190958 | Endodontic drill-file This invention is an improvement in endodontic drills used by dentists specializing in root canal dentistry. Present endodontic practice in the preparation, cleaning, and shaping of root canals in teeth entails the use of inefficient steel drills. The pre... | 03/04/1980 |
| 4165562 | Precision endodontic file A precision endodontic file including a threaded base having an endodontic file projecting outwardly therefrom is disclosed. A threaded sleeve threadedly receives the base to facilitate precise longitudinal adjustment of the file relative to the sleeve. T... | 08/28/1979 |
| 4135302 | Endodontic therapeutic device and procedures A device and procedures for endodontic therapy. An elongated flexible tubular member having a plurality of axially directed orifices formed in the distal end thereof has the proximal end thereof adapted to be connected to a source of supply of liquid. The... | 01/23/1979 |
| 4044468 | Handle for cutting and abrading instruments useful in the practice of endodontia Improved handle means for files and reamers employed in the practice of endodontics to enable more dependable grip by the operator and to signal the operator that a desired position of the cutting surfaces is being maintained.... | 08/30/1977 |
| 4028810 | Root canal file An endodontic instrument for treating a pulp canal includes a handle portion adjustably mounted in telescoping relation on the shaft of an elongated working tool, with cooperating grooves in the shaft and handle preventing relative movement therebetween d... | 06/14/1977 |
| 4019254 | Endodontic operating instrument An endodontic operating instrument is disclosed for utilization in the preparation of root canals, either manually or in conjunction with ultrasonic or other instrumentation. The instrument per se includes an elongate shank of virtually any cross section ... | 04/26/1977 |
| 3969823 | Dental handpiece for a motor driven reamer A cylindrical member of the present dental handpiece is provided with a cup bearing held into an opening adjacent its upper end and also with an annular bearing disposed into said opening adjacent its lower end. A metallic member having a substantially in... | 07/20/1976 |
| 3964170 | Gauge for positioning a stop on the shaft of a root-canal instrument A gauge for positioning a stop on a root-canal instrument is formed at one end with a handle and at the opposite end with a groove passing through a seat. The shaft of a root-canal instrument is seated in the groove with a stop fitted thereover lying in t... | 06/22/1976 |
