Connecticut Administrative Code
Title 19 - Public Health and Safety
25d - X-Ray Devices used for Diagnosis and Therapy
Section 19-25d-8 - Dental radiographic installations
Universal Citation: CT Reg of State Agencies 19-25d-8
Current through September 9, 2024
(a) Equipment
(1) The tube housing
shall be of diagnostic type.
(2)
Diaphragms or cones shall be used for collimating the useful beam and shall
provide the same degree of protection as the housing. The diameter of the
useful beam at the cone tip shall not be more than three inches (for intra-oral
radiography).
(3) A cone or spacer
frame shall provide a target-to-skin distance of not less than seven inches
with apparatus operating above fifty kvp or four inches with apparatus
operating at fifty kvp or below.
(4)
(A) For
equipment operating up to seventy kvp, the total filtration permanently in the
useful beam shall be equivalent to at least one and one-half mm of aluminum.
This requirement may be assumed to have been met if the half value layer is not
less than one and one-half mm aluminum at normal operating voltages.
(B) For equipment operating above seventy
kvp, the total filtration permanently in the useful beam shall be equivalent to
at least two and one-half mm of aluminum.
This requirement may be assumed to have been met if the half-value layer is not less than two and one-half mm aluminum at the normal operating voltages.
(5) A device shall be provided to terminate
the exposure after a preset time or exposure.
(6) The exposure control switch shall be of
the dead-man type.
(7) Each
installation shall be provided with a protective barrier for the operator or
shall be so arranged that the operator can stand at least six feet from the
patient and well away from the useful beam.
(b) Structural shielding
(1) Dental rooms containing x-ray machines
shall be provided with primary barriers at all areas struck by the useful beam.
Consideration shall be given to the attentuation provided by the
patient.
(2) When dental x-ray
units are installed in adjacent rooms or areas, protective barriers shall be
provided between the rooms or areas. Note: In many cases structural materials
of ordinary walls suffice as a protective barrier without addition of special
shielding material.
(c) Operating procedures
(1) Neither
the dentist nor his assistant shall be permitted to hold patients or films
during exposure, nor shall any individuals be regularly used for this
service.
(2) During each exposure,
the operator shall stand at least six feet from the patient or behind a
protective barrier.
(3) Only the
patient shall be in the useful beam.
(4) Neither the tube housing nor the pointer
cone shall be hand-held during exposure.
(5) Hand-held fluoroscopes shall not be used
in dental examinations.
Disclaimer: These regulations may not be the most recent version. Connecticut may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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