Historical Perspectives on Core-Carrier Gutta-Percha Obturation.

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.