- Albania / Albania
- Austria / Österreich
- Bosnia and Herzegovina / Босна и Херцеговина
- Bulgaria / България
- Croatia / Hrvatska
- Czech Republic & Slovakia / Česká republika & Slovensko
- Denmark / Danmark
- Finland / Suomi
- France / France
- Germany / Deutschland
- Greece / ΕΛΛΑΔΑ
- Italy / Italia
- Netherlands / Nederland
- Nordic / Nordic
- Poland / Polska
- Portugal / Portugal
- Romania & Moldova / România & Moldova
- Slovenia / Slovenija
- Serbia & Montenegro / Србија и Црна Гора
- Spain / España
- Sweden / Sverige
- Switzerland / Schweiz
- Turkey / Türkiye
- UK & Ireland / UK & Ireland
Graduating from the State University of New York, Mary K. Hughes, RDH, began her career as a clinical dental hygienist. She went on to become a corporate dental trainer and has lectured across North America. Her passion has always been to deliver the highest standard of periodontal care in the general dental office setting.