title: Historical Perspectives on Core-Carrier Gutta-Percha Obturation.
abstract: Dr. William Ben Johnson introduced the contemporary use fo core-carrier technology for root canal obturation in the late 1970s. This technology has undergone multiple enhancements since its commercial introduction in the early 1990s and has provided a unique clinical treatment regimen for clinicians globally. However, the very roots and evolution of this technique can be traced to the later 1800s, exhibiting a torturous and fragmented history until Dr. Johnson's creativity and impetus brought it the the forefront of root canal obturation techniques. Dr. Johnson received the Inventor of the Year award in Oklahoma for these innovative accomplishments.
authors.affiliation: American Board of Endodontics.|Texas A&M University.|Baylor College of Dentistry, Dallas.
authors.forename: James L
authors.initials: JL
authors.lastname: Gutmann
authors.affiliation: Practice Limited to Endodontics, Mesquite, Texas.
authors.forename: Lori Anna
authors.initials: LA
authors.lastname: Dees
mesh_terms: D006171:Gutta-Percha / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009825:Oklahoma; D012387:Root Canal Filling Materials / Q000266:history*; D012389:Root Canal Obturation
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha
keywords: Dental History; Operative Dentistry