What age does someone have to be to make a dentist appointment? (tx, usa?

Here is some information regarding legal ages in Texas: https://statelaws.findlaw.com/texas-law/texas-legal-ages-laws.html If you are a minor, it is your parent's responsibility to arrange treatment. Failure to do so can be considered child neglect in many jurisdictions.

IN MOST STATES 16 IS CONSIDERED THE AGE TO MAKE A DOCTOR OR DENTAL APPOINTMENT. PARENTS ARE NOTIFIED IF YOU ARE LIVING AT HOME. IF AWAY AT SCHOOL THAN THAN THE SCHOOL CAN OR MAY MAKE YOU AN APPOINTMENT.