He began practicing dentistry in Brewster, New York. After six years as an associate, he opened his own practice in Somers, New York in 1992, where he performed all the conventional procedures of dentistry, from restorations to extractions and root canals. Dr. Kulacz stopped performing root canals in 1995, but to be clear, he does not promote a ban on root canals, but stresses the importance of informed consent by patients.