Dr. John has been working with the Ministry of Health Malaysia after attaining his primary qualification from the Gadjah Mada University. He serves as a dental officer in general practice for 3 years in Negeri Sembilan, Malaysia and furthered his career in private clinics. Dr. John attended a series of professional training courses on orthodontics and implantology. Dr. John is a member of Malaysian Dental Association and has attended numerous lectures focusing on cosmetic dentistry and laser dentistry. His clinical interests include orthodontics, implants and cosmetic dentistry.