RDA TEST TEXAS ACTUAL EXAMINATION
TEST 2026 QUESTIONS WITH FULL
ANSWERS
⩥ Define Direct supervision? Answer: Direct supervision means that
you must be employed by a dentist and the dentist does have to be
present in the treatment facility during a procedure you are performing.
⩥ Does assisting in the administration of nitrous oxide require a special
type of supervision? Answer: Assisting in the administration of nitrous
oxide requires the supervising dentist be in the room, at chairside during
the procedure, giving directions to the dental assistant.
⩥ What should you do if you are asked to perform illegal procedure?
Answer: Inform a dentist the procedure is an infraction of the dental
practice act and refuse to perform the procedure.
⩥ Whos responsibility is it to adhere to the Board regulations in regard
to DA/RDA function? Answer: Both you and your supervising dentist.
you are legally responsible for adhering to Board regualtions, and you
could lose your license or have it suspended for illegally performing a
function.
⩥ How many C.E. units are you required to earn each renewal period?
Answer: 25units
,⩥ Are there any RDA functions that require a special license? Answer:
Yes Coronal Polish, ultrasonic scaler and pit and fissure sealants require
special licensure.
⩥ What is the purpose of a matrix band? Answer: A matrix band is used
to replaced the missing proximal wall of the tooth preparation
⩥ Where is the band placed? Answer: Between the interdental papilla
and the proximal surface of the tooth
⩥ What corresponding tooth would a band fit that was set-up for tooth
#28? Answer: Tooth #12
⩥ What can be used to secure the band in place? Answer: Low fusing
compound
⩥ What is the purpose of a contra-angle matrix retainer? Answer: A
contra-angle retainer can be placed from the lingual
⩥ How far should the band extend above the occlusal height and below
the gingical seat of the prepation? Answer: 1-3mm above the occlusal
height and approximately 1mm below the gingival seat.
, ⩥ Would you need to use a matrix band on a class I cavity prep?
Answer: No, a class I already has surrounding tooth structure to support
thee placement of a filling.
⩥ What is the shape of most commerical wedges and what is the purpse
of a wedge? Answer: Wedges are triangular in shape and placed with
base toward the gingival tissue. The purpose of a wedge is to press the
band tightly against the prepared tooth and to slighty open the contact of
the adjacent tooth during placement of the restoration.
⩥ Are there any specific C.E requirments you must complete other than
the number of hours? Answer: Yes you need to maintain CPR
certification, and attend board approved courses in the Dental practice
Act, and Infection control.
⩥ What is the purpose of a cavity varnish or sealer? Answer: To seal the
dental tubules from harmful substances such as mercury in amalgam and
acids from cements
⩥ Why should a varnish NOT be used under a resin or composite filling,
but why can a sealer be used? Answer: Varnishes interfere with the
polymerization of resins; however, sealers can be used because theyre
part of bonding process and do not interfere with the polymerization
⩥ Who may apply a cavity varnish or sealer, and what type of
supervision is required? Answer: RDA, direct supervision
TEST 2026 QUESTIONS WITH FULL
ANSWERS
⩥ Define Direct supervision? Answer: Direct supervision means that
you must be employed by a dentist and the dentist does have to be
present in the treatment facility during a procedure you are performing.
⩥ Does assisting in the administration of nitrous oxide require a special
type of supervision? Answer: Assisting in the administration of nitrous
oxide requires the supervising dentist be in the room, at chairside during
the procedure, giving directions to the dental assistant.
⩥ What should you do if you are asked to perform illegal procedure?
Answer: Inform a dentist the procedure is an infraction of the dental
practice act and refuse to perform the procedure.
⩥ Whos responsibility is it to adhere to the Board regulations in regard
to DA/RDA function? Answer: Both you and your supervising dentist.
you are legally responsible for adhering to Board regualtions, and you
could lose your license or have it suspended for illegally performing a
function.
⩥ How many C.E. units are you required to earn each renewal period?
Answer: 25units
,⩥ Are there any RDA functions that require a special license? Answer:
Yes Coronal Polish, ultrasonic scaler and pit and fissure sealants require
special licensure.
⩥ What is the purpose of a matrix band? Answer: A matrix band is used
to replaced the missing proximal wall of the tooth preparation
⩥ Where is the band placed? Answer: Between the interdental papilla
and the proximal surface of the tooth
⩥ What corresponding tooth would a band fit that was set-up for tooth
#28? Answer: Tooth #12
⩥ What can be used to secure the band in place? Answer: Low fusing
compound
⩥ What is the purpose of a contra-angle matrix retainer? Answer: A
contra-angle retainer can be placed from the lingual
⩥ How far should the band extend above the occlusal height and below
the gingical seat of the prepation? Answer: 1-3mm above the occlusal
height and approximately 1mm below the gingival seat.
, ⩥ Would you need to use a matrix band on a class I cavity prep?
Answer: No, a class I already has surrounding tooth structure to support
thee placement of a filling.
⩥ What is the shape of most commerical wedges and what is the purpse
of a wedge? Answer: Wedges are triangular in shape and placed with
base toward the gingival tissue. The purpose of a wedge is to press the
band tightly against the prepared tooth and to slighty open the contact of
the adjacent tooth during placement of the restoration.
⩥ Are there any specific C.E requirments you must complete other than
the number of hours? Answer: Yes you need to maintain CPR
certification, and attend board approved courses in the Dental practice
Act, and Infection control.
⩥ What is the purpose of a cavity varnish or sealer? Answer: To seal the
dental tubules from harmful substances such as mercury in amalgam and
acids from cements
⩥ Why should a varnish NOT be used under a resin or composite filling,
but why can a sealer be used? Answer: Varnishes interfere with the
polymerization of resins; however, sealers can be used because theyre
part of bonding process and do not interfere with the polymerization
⩥ Who may apply a cavity varnish or sealer, and what type of
supervision is required? Answer: RDA, direct supervision
