DR. L. STEHEN BUCHANAN
Dentist at State St, Santa Barbara, CA
License number
California 27591
Category
Dentist
Type
Endodontics
Address
Address
1515 State St STE 7, Santa Barbara, CA 93101
Phone
(805) 963-0373
(805) 963-0799 (Fax)
(805) 963-0799 (Fax)
Organization information
See more information about L. STEHEN BUCHANAN at bizstanding.comL. STEPHEN BUCHANAN, D.D.S., A PROFESSIONAL CORPORATION
1515 State St #7, Santa Barbara, CA 93101
Status:
Inactive
Industry:
Dentist's Office, Dentists
Doing business as:
L Stephen Buchanan DDS<br>L Stehen Buchanan DDS
Registration:
Mar 7, 1981
Phone:
(805) 963-0370 (Phone)
State ID:
C1020120
Business type:
Articles of Incorporation
President, Family And General Dentistry, Partners:
L Stehen Buchanan,Stephen Buchannan (Partner, Family And General Dentistry),L. S. Buchanan President, Family And General Dentistry, Partner, inactive
Agent:
L S Buchanan,Santa Barbara, CA 93101 (Physical)
Professional information
Apex Locator For Endodontic Procedures
US Patent:
7993138, Aug 9, 2011
Filed:
Aug 19, 2008
Appl. No.:
12/194477
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C 5/02, A61B 5/103
US Classification:
433224, 600590
Abstract:
An electronic device for locating the apex of a root canal within a tooth of a dental patient has a display screen on a display component to provide an image indicating when the apex of a root canal has been located. A free end of a first electrical lead is provided for placement within the root canal or in contact with an electrically conductive tool within the root canal. A free end of a second electrical lead is used to establishing a ground on a conductive portion of the dental patient such as a tissue surface within the mouth. The opposite ends of each of the leads is connected to the display component. Removeably attached to the display component is a lead carrier. The detachable lead carrier and the leads mounted thereon can be sterilized as a unit and then attached to the display component, which is bagged in a sterile barrier, for performing the apex locating procedure. The apex locator has one or more mounting structures for placing the display in a location adjacent the patients head, attached to adjacent instrumentation, or attached to the dental practitioner's hand or arm such that the display image is readily visible by the dental practitioner during the apex locating procedure.
Endodontic Instruments With Pilot Tips And Parabolic Cutting Flutes
US Patent:
2014005, Feb 27, 2014
Filed:
Oct 8, 2013
Appl. No.:
14/048448
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C 5/02
US Classification:
433102
Abstract:
A series of multi-tapered parabolic implements is disclosed for endodontic use. The instruments comprise different sections: a pilot tip, a first portion adjacent the pilot tip and a second portion adjacent the shank. The two portions have different tapers. The tapers of the two different portions blend into each other along a parabola-shaped surface. The pilot tip is radiussed for ease of entry into a root canal with increased safety.
Variable Land, Multiple Height Flute Contour Design For Endodontic Files
US Patent:
8408901, Apr 2, 2013
Filed:
Jul 25, 2006
Appl. No.:
11/493460
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C 5/02
US Classification:
433 81, 433102
Abstract:
A tapered endodontic rotary file for shaping or cleaning a root canal in a tooth has one or more flutes spiraling along the length of the file. The diameters of the one or more flutes tapers in a non-uniform manner from a first diameter in a shank portion of the file to a smaller diameter in a tip portion of the file such that at least one flute region intermediate the shank portion and the tip portion has a diameter less than a straight line taper from the shank portion to the tip portion. The flutes can also be landed and the width of the lands can be varied along the length of the file. In particular, the width of the lands in the intermediate region are wider than the width in the tip or shank portion.
Endodontic Instruments With Pilot Tips And Parabolic Cutting Flutes
US Patent:
2006022, Oct 12, 2006
Filed:
Apr 12, 2005
Appl. No.:
11/104979
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C 5/02
US Classification:
433102000
Abstract:
A series of multi-tapered parabolic implements is disclosed for endodontic use. The instruments comprise different sections: a pilot tip, a first portion adjacent the pilot tip and a second portion adjacent the shank. The two portions have different tapers. The tapers of the two different portions blend into each other along a parabola-shaped surface. The pilot tip is radiussed for ease of entry into a root canal with increased safety.
Motor Control System For Endodontic Handpiece Providing Dynamic Torque Limit Tracking Of Specific File Fatigue
US Patent:
6955536, Oct 18, 2005
Filed:
Sep 24, 2003
Appl. No.:
10/670102
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C005/02
US Classification:
433 27, 435102, 435131
Abstract:
A system for establishing a cumulative history of stress factors encountered during use of an endodontic file and keeping track of such for a plurality of files so that the files can be re-used with confidence that a given file is as safe to use as a new file. Cost of file maintenance is significantly reduced and the likelihood of file breakage in use is minimized.
Dental Instruments For Use With Ultrasonic Handpieces
US Patent:
6722882, Apr 20, 2004
Filed:
Feb 14, 2003
Appl. No.:
10/367176
Inventors:
L. Stephen Buchanan - Santa Barbara CA
Assignee:
Earth City Technologies, Inc. - Fenton MO
International Classification:
A61C 107
US Classification:
433119, 433166
Abstract:
An ultrasonic dental instrument or tip is disclosed for performing endodontic procedures. The instrument has a hub adapted to be operatively coupled to the output of an ultrasonic handpiece and a shank portion extending from the hub. A first portion of the shank extends in a generally axial direction from the hub and tip portion extends from the first portion. The shank has a bend therein between the first portion and the tip portion ranging between about 90° and about 140°. One embodiment of the tip has an enlarged, bulbous free end, with the latter having an end face cross sectional area larger than the cross sectional area of the tip portion proximate the enlarged free end. The enlarged free end has an abrasive coating thereon so that upon activation of the instrument by the transducer, the tip portion and the enlarged free end vibrates in a plane including the shank and tip portions. Other embodiments of the tip have radiused ends so that they do not leave troughs or scratches in the canal which obfuscate canals.
Multi-Tapered Dental Files
US Patent:
2005002, Feb 3, 2005
Filed:
Jul 30, 2003
Appl. No.:
10/630028
Inventors:
L. Buchanan - Santa Barbara CA, US
International Classification:
A61C005/02
US Classification:
433102000
Abstract:
A series of multi-tapered files is disclosed for endodontic use. The files comprise at least two sections, a first portion adjacent the tip of the file and a second portion adjacent the shank. The two portions have different tapers. The files are provided in sets of at least four with the tapers of the first portions of all of the files decreasing incrementally from the first to the last file of the set. In some of the sets, the tapers of the second portions are the same from file to file, being fixed at one of two selected tapers. In other sets, the tapers of the second portions increase from file to file as the tapers of the first portions decrease.
Root Canal Preparation Method
US Patent:
6053735, Apr 25, 2000
Filed:
Dec 24, 1998
Appl. No.:
9/220725
Inventors:
L. Stephen Buchanan - Santa Barbara CA
International Classification:
A61C 502
US Classification:
433224
Abstract:
An improved endodontic procedure for preparation of root canals in teeth comprising the use of selected endodontic instruments such as files or burs in a prescribed series of steps. These steps include using a series of successively smaller instruments in a first crown-down procedure, using the instruments in a reverse sequence in a serial step-back procedure, followed by finishing the preparation of the canal with selected instruments in a second crown-down procedure. Conventional root canal files of standard taper or variably-tapered files may be used in the practice of the method.
Anti-Curvature Dental Root Canal Shaping File
US Patent:
4836780, Jun 6, 1989
Filed:
Aug 22, 1986
Appl. No.:
6/899419
Inventors:
L. Stephen Buchanan - Montecito CA
International Classification:
A61C 502
US Classification:
433102
Abstract:
A series of instruments for use in cleaning and shaping the root canal of a tooth is disclosed. The instruments are files having increasing tapers on sequentially-used files, with all of the files having the same, or nearly the same, small diameter at the tip of the cutting surface. The files create an increasingly tapered aperture in the root canal, which is exactly sized to admit a selected one of a set of variable taper filling materials available for filling a prepared root canal. Each file also has a safe edge to eliminate perforating the root canal, a rounded tip to eliminate ledging, and a handle shaped to provide a tactile reference to the orientation of the safe edge.
Dental Obturator
US Patent:
2011021, Sep 8, 2011
Filed:
May 13, 2011
Appl. No.:
13/107842
Inventors:
L. Stephen Buchanan - Santa Barbara CA, US
International Classification:
A61C 5/02
US Classification:
433 81
Abstract:
Dental obturators are used in the preparation of root canals in teeth. The subject obturators are so constructed that they bind at a particular distance into the canal, thereby precluding possible damage at the end of the canal. The obturator is used for positioning of a sealing material placed on a carrier portion of the obturator into the root canal. Disclosed are a variety of structural configurations on a tapered surface of the carrier portion is disclosed.