EFDA FINAL EXAM QUESTIONS AND
CORRECT ANSWERS. VERIFIED
2025/2026.
What is an EFDA - ANS Expanded Functions Dental Auxiliary
When did it start in OHIO - ANS 1976
How do you become an EFDA - ANS - complete an accredited program
- pass the Ohio board exam for EFDA
- register with the state dental board
*Cannot practice EFDA until registered*
how many hours do you need - ANS 100 hours of pre-clinical
80 hours of clinic
Who is eligible - ANS - unlicensed dentists
- dental students
- graduates of foreign dental colleges
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,- CDA: certified dental assis.
- RDH: licensed or not
What tasks can EFDA do - ANS - *CAN DO* --> REMEDIABLE TASKS: dont cause irreparable
change in the oral cavity
e.g. sealants, amalgam, non-metallic
What is beyond an EFDA
"NON-DELEGABLE taks" - ANS - *CANNOT* DO --> IRREMEDIABLE TASKS:
- diagnosing
- tx planning
- final placement or adjustment of fixed or removable appliance
- therapeutic intraoral adjustment of any fixed or removable appliance
- cutting procedures utilized for preparation of a tooth or involving the periodontium
- placement of final root canal
- final impression for prosthetic restoration
- occlusal registration for prosthetic restorations
- final placement of restorations or crowns
-retraction of gingival sulcus prior to impressions
-procedures using light amplification (LASER)
limitations to EFDA - ANS - have to work under *direct supervision* ==> dentist has to be in
the office
- some things can be done under general supervision (e.g. sealants, fluoride)
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, per dentist @ ONE time there can be:
- 3 EFDAs
- 4 RDH
Commission on Dental Testing (CODT) - ANS - offers TWO exams/year
- test bank of 14 teeth
- 3 teeth in 2 hours
- 75 question written exam *same day* after clinical
Commission on Dental Competency Assessments (CDCA) - ANS - New to EFDA in 2015
- offers 2 public exams @ case western
-offers closed exams at schools
- 100 questions written exam *different day*
What is the slow speed hand piece used for? - ANS - finishing and polishing composite
restorations
- coronal polishing
part to the slow speed - ANS 1. swivel adaptor
2. motor to angle adaptor (attaches to latch head and friction grip head)
3. friction grip head
4. latch head
5. motor
What is the high speed hand piece used for? - ANS - tooth preparation: cutting of enamel and
dentin
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CORRECT ANSWERS. VERIFIED
2025/2026.
What is an EFDA - ANS Expanded Functions Dental Auxiliary
When did it start in OHIO - ANS 1976
How do you become an EFDA - ANS - complete an accredited program
- pass the Ohio board exam for EFDA
- register with the state dental board
*Cannot practice EFDA until registered*
how many hours do you need - ANS 100 hours of pre-clinical
80 hours of clinic
Who is eligible - ANS - unlicensed dentists
- dental students
- graduates of foreign dental colleges
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,- CDA: certified dental assis.
- RDH: licensed or not
What tasks can EFDA do - ANS - *CAN DO* --> REMEDIABLE TASKS: dont cause irreparable
change in the oral cavity
e.g. sealants, amalgam, non-metallic
What is beyond an EFDA
"NON-DELEGABLE taks" - ANS - *CANNOT* DO --> IRREMEDIABLE TASKS:
- diagnosing
- tx planning
- final placement or adjustment of fixed or removable appliance
- therapeutic intraoral adjustment of any fixed or removable appliance
- cutting procedures utilized for preparation of a tooth or involving the periodontium
- placement of final root canal
- final impression for prosthetic restoration
- occlusal registration for prosthetic restorations
- final placement of restorations or crowns
-retraction of gingival sulcus prior to impressions
-procedures using light amplification (LASER)
limitations to EFDA - ANS - have to work under *direct supervision* ==> dentist has to be in
the office
- some things can be done under general supervision (e.g. sealants, fluoride)
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, per dentist @ ONE time there can be:
- 3 EFDAs
- 4 RDH
Commission on Dental Testing (CODT) - ANS - offers TWO exams/year
- test bank of 14 teeth
- 3 teeth in 2 hours
- 75 question written exam *same day* after clinical
Commission on Dental Competency Assessments (CDCA) - ANS - New to EFDA in 2015
- offers 2 public exams @ case western
-offers closed exams at schools
- 100 questions written exam *different day*
What is the slow speed hand piece used for? - ANS - finishing and polishing composite
restorations
- coronal polishing
part to the slow speed - ANS 1. swivel adaptor
2. motor to angle adaptor (attaches to latch head and friction grip head)
3. friction grip head
4. latch head
5. motor
What is the high speed hand piece used for? - ANS - tooth preparation: cutting of enamel and
dentin
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
