Adonis Antoniou was born and raised in Paphos, Cyprus.

In 2003 he secured one of the seven places at the School of Dentistry of the University of Athens. Following his twenty-five-month military service in September 2005, he enrolled in his first semester. During his time at the university, he had two publications in scientific journals and participated in several conferences. After five years of clinical training, he graduated in July 2010. Then he took voluntary work at the dental department of the general hospital of his hometown.

In 2011 he moved to the U.K where he worked for five years in clinics in Peterborough, Bristol, and Oxford. During this time, he successfully treated thousands of patients providing them with high level service and care.

In 2012 he specialized in the surgical placement of dental implants as well as their prosthetic rehabilitation, at Dentale Academy in Bristol and was trained by renowned oral surgeons.

Since 2016 he lives with his wife and their two children in Athens and works in his private dental practice. He has a special interest in cosmetic dentistry and implantology. His goal is to provide his patients with high quality dental services. To achieve this, he invests in new technology and continues education.