Electronic pulp testing has been used in the diagnosis of tooth disease for more than half a century. The Vitality Scanner 2006 (Kerr Corporation, Brea CA, USA) has been the gold standard device in the USA, and unfortunately is no longer in production. The purpose of this study is to compare this older electronic pulp tester with a modern electronic pulp tester, the Digitest 3 Vitality Tester (Parkell Inc, Edgewood, NY, USA) in a laboratory and clinical setting.