The 63-year-old unnamed man who had been treating patients at his home in Kuala Lumpur without any training or qualifications for almost three decades was arrested by the Malaysian police.
The raiding party, which was acting on a tip-off, comprised officers of the Health Ministry and Federal Territory Health Department as well as men from Jinjang police.
Among the items seized from the premises were antibiotics, painkillers, syringes and bottles containing Chinese medicine.
The fake dentist said that he had assisted an army dentist in the 1960s and 1970s by carrying his bag and had learned how to pull teeth.
"I watched the doctor diagnose and treat problems with teeth. I also saw how he would extract teeth and make models and measurements for dentures to replace missing teeth," Ananova quoted him, as telling the New Straits Times.
He further said he had tried to find work as a dental assistant but was rejected. It was then that he set up his own practice, telling neighbours he was a retired army dentist.
The man is due to be charged for wrongfully practising as a dentist, and faces a fine of up to 300,000 ringgit (88,235 dollars) and a jail term of six years.