22 Tex. Admin. Code § 113.2
Laboratories such as x-ray laboratories must be in the dental office of a legally practicing dentist. All dental employees are subject to the dentist's supervision and control and such "laboratories" cannot be at a location where the dentist is not present and in control. All patients in the dental office must be protected during the time of direct exposure to x-rays with a lead apron and by equipment that is properly monitored by the authorized agency.
Source Note:The provisions of this §113.2 adopted to be effective May 28, 1979, 4 TexReg 1766; amended to be effective October 1, 1982, 7 TexReg 3357; amended to be effective February 20, 1992, 17 TexReg 1094.