A graduate of the University of the Philippines College of Dentistry in 1994, Dr. Ermita placed 10th in the National Dental Board Examinations in the same year. He underwent training in Oral Surgery at the U.P. – Philippine General Hospital in 1995 & received a scholarship from the Oral Implantology Center of the Philippines, Inc. (OICP) the following year. He trained in Oral Implantology at the Furusawa Implant Research Institute (FIRI) in Sendai, Japan in 1996. In 2004, he received a scholarship from the National Academy of German Periodontists (NAGP) to the International Summerschool in Clinical Periodontology & Implantology at the prestigious University of Heidelberg in Germany. Having been an active member of the academe since 1999, he was a member of the faculty of the Emilio Aguinaldo College (EAC) College of Dentistry where he taught Oral Surgery and Pathology. At present, he is a member of the faculty in the UP College of Dentistry Manila. He teaches Oral pathology, Oral Surgery, Clinical Periodontics and Dental Radiology.