An in vivo evaluation of interface media used with the electric pulp tester

Four interface media were tested with an electric pulp tester to determine whether the amount of current needed to elicit a response varies with the material. Each material was tested on the facial and linqual surfaces of anterior teeth. Clinical results showed no appreciable difference between the materials used, provided they were water or petroleum based. Facial and lingual readings were the same in about half the tests, and lingual readings were slightly lower than facial readings in 40% of the tests.