Welcome to John Wantulok, Endodontics Dr. Wantulok received his dental degree in 1967 from the University of Washington and after a tour in the Navy went to the University of Southern California for a two-year residency in endodontics. He was the first trained root canal specialist in the Spokane area in 1971. Dr. Wantulok has lectured throughout the western United States, published several articles and taught part time at the University of Oregon. He has acquired a wealth of practical as well as technical experience during his 30 plus years of clinical practice. He enjoys riding his mules, cross-countryskiing and many other activities.