ISDH: International Symposium on Dental Hygiene The International Symposium on Dental Hygiene (ISDH) is held every two years under the auspices of the International Federation of Dental Hygienists (IFDH) to provide a forum for the understanding and discussion of issues pertaining to dental hygiene. Symposium attendees include Dental/Oral Hygienists, Medical/Dental Practitioners and Allied Healthcare Practitioners. […]