Web sites that offer a personal search for a practitioner of Holistic or Biological dentistry:
HDA: Holistic Dental Association
http://holisticdental.org/find-a-holistic-dentist
IAOMT: International Academy of Oral Medicine and Toxicology
https://iaomt.org/search/
IABDM: International Academy of Biological Dentistry and Medicine
https://iabdm.org/location/