Orthodontist by virtue of his MDS in 1978, Dr. S.P. Aggarwal worked with Dr. PI Branemark and Dr. Carl Misch in 1994 and 1996 before shifting full time to Dental Implantology. He is the director of Green Park Dental Institute, Delhi where he runs a busy practice since 1986 and courses on Implants and Orthodontics for general practitioners as well.