Dr Kestenberg has been in private practice in Coburg since 1981. He has a special interest in lasers in dentistry, minimally invasive dentistry, prosthodontics which includes dental and facial aesthetics, treatment of sleep disordered breathing with dental appliances, the treatment of lip and tongue tie for babies who cannot breastfeed and tongue tie for eating issues and speech disorders in toddlers. Dr Kestenberg is also a teacher in prosthodontics to final year dental students at the University of Melbourne and is a consultant in prosthodontics at Monash Medical Centre (Southern Health). Just to keep busy, he is also an examiner for the Royal Australasian College of Dental Surgeons and a Panel member for the Australian Health Practitioner Regulation Agency (AHPRA). His keen interest and experience in cosmetic injectables and dermal fillers fits in beautifully with his dental practice and philosophy of treating the patient as a whole and not just drilling a filling teeth. He is often known to say "Your health is not just about your teeth".