TY - GEN AU - Gutmann,James L TI - Origins of the Electronic Apex Locator - Achieving Success with Strict Adherence to Business SN - 1089-6287 PY - 2018///0716 KW - Dental Pulp Cavity KW - History, 20th Century KW - Odontometry KW - Root Canal Preparation KW - history KW - Root Canal Therapy KW - Tooth Apex N1 - Publication Type: Historical Article; Journal Article ER -