‘Living legend’ Dr. Ray Bowen retires after 62 years In 1962, Dr. Bowen developed Bis-GMA, a methacrylate monomer used in most modern composite resin restorative materials, while at the ADA Research Unit at the National Bureau of Standards. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related admin2018-12-18T01:00:00-05:00 Share This Wonderful Life Event! FacebookTwitterPinterestEmail Related Posts ADA, AAPD file joint comments with CMS ADA, AAPD file joint comments with CMS March 3rd, 2020 Phishing email claims to be from ADA president Phishing email claims to be from ADA president March 2nd, 2020 Vaping bill passes House Vaping bill passes House March 2nd, 2020