Denny is a Campbelltown local who grew up in the area and graduated from James Cook University in Cairns with a Bachelor of Dental Surgery in 2017 and subsequent Honours in 2018. He also completed the Primary Dental Sciences Examination with the Royal Australiasian College of Dental Surgeons in 2018. Denny developed a deep interest in periodontics and implant dentistry and commenced a Doctor of Clinical Dentistry (Periodontics) at the University of Sydney in 2020.

Denny has published articles in reputable international journals, presented at multiple research conferences, and has been awarded the Straumann Group Research Award, the Australian Dental Research Foundation Grant, the Colgate Travel Award to present research at the 58th Annual Scientific Meeting of the IADR ANZ Division, the Australian Society of Periodontology Medal, the Best Research Poster Prize for the JCU Colleges of Medicine & Dentistry, and Healthcare Sciences, the NAHSS Allied Health Clinical Placement Scholarship, the Head of Dentistry Best Student Research Poster (JCU), and the Overall Best Poster Award for Research at the JCU College of Dentistry: Clinical Day.

Denny is actively involved in clinical education with the Sydney Dental School and is eager to assist and educate colleagues in periodontics and implant dentistry.