Mario Sabillon-Mejia allegedly told clients he was a dentist from Honduras. He and his assistant, Tiffany Gonzalez, charged one woman $1,500 to pull out several teeth.
But the victim told police the extraction happened on her living room couch. She experienced severe pain and bleeding and then afterward developed a serious infection.
The woman claims she asked the pair to stop, but they didn't. They used her own restroom to clean their tools, police said.
Sabillon-Mejia and Gonzalez were arrested Wednesday. They've been charged with practicing medicine without a license and possessing a dangerous drug.
Police are sure they have more victims in the illegal immigrant community, but are concerned people will not come forward.
The victim, Erika Martinez, says the pair pulled five teeth.
She says she could feel the pain as her teeth were being pulled and she asked them to stop, but she says Sabillon-Mejia told her, "I cannot."
"He had a lot of the equipment that you see in dental offices, but was doing all this in people's homes," said Lt. Tony Crawford with the Dallas Police Department.
Martinez says Sabillon-Mejia only washed the equipment with water after pulling her teeth and put them back in his bag.
When Sabillon-Mejia and Gonzalez were arrested, police found notebooks with names of other clients and feel there could be more victims.
While Sabillon-Mejia told Martinez that he was a dentist in Honduras, police say that's not true.
"We think that he was getting his experience by just practicing on people who were hiring him," said Crawford.
Martinez says she feels there are many more people like her, but afraid to come forward.
She sought a dentist out because she had no insurance and is undocumented.
Doctors have told her it will now take $9,000 to fix the damage caused by the man police say is a fraud.