Trisha O’Hehir, MS, RDH, graduated from the University of Minnesota with degrees in dental hygiene and higher education. Her five decades as a dental hygienist included private practice in the United States and Zurich, Switzerland, and faculty positions at the Universities of Minnesota, Washington, Arizona, and Louisville. In 2012, she founded O’Hehir University, an online university for licensed dental hygienists to complete a BS degree in oral health promotion. She also completed training in myofunctional therapy and Buteyko breathing.