Object Record
Images
Metadata
Object/Catalog Number |
1963.401.1 |
Object Name |
Inlay Machine, Taggart Cast |
Accession Number |
1963.5 |
Collection |
Dr. George M. Hollenback Collection |
Object Category |
15: Dental Materials, Tools & Equipment |
Object Sub-category |
Prosthodontics-Crown, Bridge & Dentures |
Date |
1907 |
Description |
Taggart Cast Inlay Machine, No. 96. First patented Sept. 10, 1907 (No.: 865823). |
Material |
Metal |
Notes |
On display in the Edwin and Trudy Weaver Historical Dental Museum Exhibition. Patented September 10, 1907 Who : William H. Taggart What : Technique for "lost wax" casting machine When: 1907 Where : Chicago, Illinois Purpose: Allows a dentist to make precision cast fillings Comments: Taggart's technique was called the "disappearing wax" technique. With centrifugal force replacing gravity as a method of filling the casting image inside an investment, it became possible to cast small, highly detailed objects. He patented this technique but lost his patents when it was discovered that Dr. B. F. Philbrook of Denison, Iowa, had written an article entitled "Cast Fillings" about gold inlay castings 25 years earlier, notes Dr. Wilwerding. Evolution: Although systems somewhat paralleling his were in existence in the 1890s or before, Taggart's was revolutionary and considered o ne of restorative dentistry's greatest achievements. Thanks to Taggart, dentists were able to cast gold crowns and inlays with precision. Further refinements followed, including the introduction (also in 1907) of the centrifugal casting machine by Jamieson. Shortly thereafter, accurate methods for controlling expansion and contraction were developed, leading to the ability to fabricate highly precise castings. Since then, inlays and onlays made of high-strength composite materials and porcelain have been introduced. In 1985, the first ceramic inlay made by a chairside CAD/CAM device was cemented into a patient's tooth. In 2000, the CEREC 3 ® was introduced. This latest system provides a means by which a sophisticated ceramic inlay or onlay can be fabricated, with a handheld scanner reading the details of the preparation and software subsequently being used to drive the mechanism to precision-grind a restoration without the use of an impression or a second dental appointment. Source: Nayda Rondon. "The Stellar Names of Dentistry and Their Wonderful Inventions." Inside Dentistry. Vol. 5, Iss. 5 (May 2009). Web Link: http://www.dentalaegis.com/id/2009/05/the-stellar-names-of-dentistry-and-their-wonderful-inventions |
Related Publications |
U.S. Patent No.: 865823 (Sept. 10, 1907) U.S. Patent Document - Google Patents Link: http://www.google.com/patents?id=Ju1PAAAAEBAJ&printsec=description#v=onepage&q&f=false |
Number of images |
1.0 |
Credit line |
Gift of Dr. George M. Hollenback |
Catalog date |
2010-02-05 |
Caption |
Taggart Cast Inly Machine, No. 96 |
Source |
Hollenback, Dr. George M. |
Exhibits on View |
Edwin and Trudy Weaver Historical Dental Museum Exhibition |