Which of the following tests is the least useful in endodontic diagnosis of children?: (A) Percussion, (B) Palpation, (C) Electric pulp test, (D) Cold test
Answer is C. Electric pulp testL Until apical closure occurs, teeth do not respond normally to electric pulp testing. In addition, a traumatic injury may temporarily alter the conduction capability of nerve endings and/or sensory receptors in the pulp. A patient with a vital pulp may not experience any sensation right after trauma.