Dr. John Rodriguez has his credentials at Timeless Dental on the walls to clearly show he's been sanctioned by the state to practice dentistry.
Rodriguez says, "I would say it would be very dangerous for a person to seek out this kind of help."
That kind of help the Woodlands dentist is referring to - people who practice dentistry without a license.
People allegedly like 79-year-old Mary Diaz. Prosecutors arrested her this week saying she practiced dentistry on Heights Boulevard without any known license.
We went to the address listed as Diaz's home in Spring but no one answered the door.
Rodriguez says, "the obvious question there is whether the instruments are being sterilized between patients."
Dr. Rodriguez, who's been practicing for more than a decade, says that's when going to a person who is not an actual dentist can cost you your life, that's right your life. He says for example, AIDS, HIV, and Hepatitis C.
"If the area the person is working in or the doctor is not sterilized properly that is a disease that can be spread just from saliva", says Rodriguez.
In the meantime, Harris County prosecutors want to know if Diaz worked on your teeth. Sara Kinney with the Harris County District Attorney's office says there could be more patients in Houston they'd like to hear from.
Possible patients, Dr. Rodriguez says, may have been attracted to Diaz for one reason: the cheap cost.