The three have pleaded guilty to charges including running an illegal business, attempted bodily harm, stealing and illegal production and handling of narcotics, psychotropic substances and poison. They face up to eight years in prison.
Police say the 22-year-old son consulted the internet to do procedures, including extractions, while his 50-year-old mother, a nurse by profession, worked as his assistant and provided materials. The 44-year-old father made prosthetic devices.
The regional Denik newspaper said the clinic was reported by a dentist who was approached by a patient who suffered from complications after treatment.