EFDA review practice exam | 49 Questions
with 100% Correct Answers
Basic remediable intraoral tasks and/or procedures include all of the following except:
1. impressions for diagnostic models or mouthguard
2. suture removal
3. placement of gingival retraction cord prior to direction impression
4. placement of surgical dressings Correct Answer: 3. placement of gingival retraction cord prior
to direction impression
The following statements all apply to direct supervision except:
1. dentist is physically present during the performance of delegated "acts"
2. dentist checks the pt before pt leaves the office
3. dentist is personally operating on a pt
4. delegated procedures are performed pursuant to dentist's order and under his/her license
Correct Answer: 3. dentist is personally operating on a pt
The following statements are true regarding the dental pulp except one. Which one is the
exception?
1. provides nutrients + fluids to the dentin thru the blood supply
2. contains nerve fibers that mediate pain sensations
3. contains odontoblasts which help form primary, secondary, and reparative dentin
4. increases in size with age Correct Answer: 4. increases in size with age
On a tooth with extensive gingival recession below the CEJ, which of the following would be
visible?
1. anatomical crown
2. clinical crown
3. anatomical + clinical crown
4. anatomical + clinical root Correct Answer: 3. anatomical + clinical crown
Which of the following statements most accurately describes the periodontium?
1. the oral hard + soft tissues that support the teeth
2. enamel + cementum located on the exterior surfaces of the teeth
3. soft tissue that is loosely attached to the underlying bone
4. cuff of tissue that is not attached to the tooth Correct Answer: 1. the oral hard + soft tissues
that support the teeth
When would an open sandwich technique with GI be recommended?
1. whenever a metal matrix band is used
2. whenever the gingival margin of the proximal box is deeper than ideal
3. it is recommended with every class II composite restoration
4. when the proximal box is wider buccolingually than ideal Correct Answer: 2. whenever the
gingival margin of the proximal box is deeper than ideal
, Which of the following materials should not be placed directly on dentin d/t the irritation it may
cause to the tooth?
1. copal varnish
2. GI
3. zinc phosphate cement
4. calcium hydroxide Correct Answer: 3. zinc phosphate cement
Which of the following statements is true regarding GI?
1. GI is more abrasion-resistant than amalgam
2. GI is more moisture-sensitive than composite
3. GI provides better esthetics than composite
4. GI bonds chemically and mechanically to dentin Correct Answer: 4. GI bonds chemically and
mechanically to dentin
Tooth #19 MODB RUC is to be restored with amalgam. The overfill on the distal + distobuccal
cusps should be:
1. equal to the cavosurface margin
2. to the desired final height of the restoration
3. slightly higher occlusally than the neighboring cusp of the adjacent tooth
4. slightly shorter than desired final height of restoration Correct Answer: 3. slightly higher
occlusally than the neighboring cusp of the adjacent tooth
Dentin is normally yellowish-white and darker than enamel. The composition of dentin is
approximately:
1. 90% inorganic material, 2.0% organic material, 8% water
2. 95.5% inorganic material, 0.5% organic material, 4% water
3. 70% inorganic material, 20% organic material, 10% water
4. 85% inorganic material, 1.0% organic material, 10% water Correct Answer: 3. 70% inorganic
material, 20% organic material, 10% water
This embrasure is located btwn the marginal ridge + contact area and can be formed by a sickle
explorer in soft amalgam @ a 45deg angle:
1. facial
2. lingual
3. occlusal
4. gingival Correct Answer: 3. occlusal
An overextension (flash) @ the cavosurface margin is indicated by:
1. a space btwn the restoration + the enamel wall
2. a catch as the explorer moves from moves from tooth to amalgam
3. a catch as the explorer moves from amalgam to tooth
4. a catch as the explorer is moved in both directions Correct Answer: 2. a catch as the explorer
moves from moves from tooth to amalgam
Which of the teeth in the mouth is the largest with 5 functional cusps?
with 100% Correct Answers
Basic remediable intraoral tasks and/or procedures include all of the following except:
1. impressions for diagnostic models or mouthguard
2. suture removal
3. placement of gingival retraction cord prior to direction impression
4. placement of surgical dressings Correct Answer: 3. placement of gingival retraction cord prior
to direction impression
The following statements all apply to direct supervision except:
1. dentist is physically present during the performance of delegated "acts"
2. dentist checks the pt before pt leaves the office
3. dentist is personally operating on a pt
4. delegated procedures are performed pursuant to dentist's order and under his/her license
Correct Answer: 3. dentist is personally operating on a pt
The following statements are true regarding the dental pulp except one. Which one is the
exception?
1. provides nutrients + fluids to the dentin thru the blood supply
2. contains nerve fibers that mediate pain sensations
3. contains odontoblasts which help form primary, secondary, and reparative dentin
4. increases in size with age Correct Answer: 4. increases in size with age
On a tooth with extensive gingival recession below the CEJ, which of the following would be
visible?
1. anatomical crown
2. clinical crown
3. anatomical + clinical crown
4. anatomical + clinical root Correct Answer: 3. anatomical + clinical crown
Which of the following statements most accurately describes the periodontium?
1. the oral hard + soft tissues that support the teeth
2. enamel + cementum located on the exterior surfaces of the teeth
3. soft tissue that is loosely attached to the underlying bone
4. cuff of tissue that is not attached to the tooth Correct Answer: 1. the oral hard + soft tissues
that support the teeth
When would an open sandwich technique with GI be recommended?
1. whenever a metal matrix band is used
2. whenever the gingival margin of the proximal box is deeper than ideal
3. it is recommended with every class II composite restoration
4. when the proximal box is wider buccolingually than ideal Correct Answer: 2. whenever the
gingival margin of the proximal box is deeper than ideal
, Which of the following materials should not be placed directly on dentin d/t the irritation it may
cause to the tooth?
1. copal varnish
2. GI
3. zinc phosphate cement
4. calcium hydroxide Correct Answer: 3. zinc phosphate cement
Which of the following statements is true regarding GI?
1. GI is more abrasion-resistant than amalgam
2. GI is more moisture-sensitive than composite
3. GI provides better esthetics than composite
4. GI bonds chemically and mechanically to dentin Correct Answer: 4. GI bonds chemically and
mechanically to dentin
Tooth #19 MODB RUC is to be restored with amalgam. The overfill on the distal + distobuccal
cusps should be:
1. equal to the cavosurface margin
2. to the desired final height of the restoration
3. slightly higher occlusally than the neighboring cusp of the adjacent tooth
4. slightly shorter than desired final height of restoration Correct Answer: 3. slightly higher
occlusally than the neighboring cusp of the adjacent tooth
Dentin is normally yellowish-white and darker than enamel. The composition of dentin is
approximately:
1. 90% inorganic material, 2.0% organic material, 8% water
2. 95.5% inorganic material, 0.5% organic material, 4% water
3. 70% inorganic material, 20% organic material, 10% water
4. 85% inorganic material, 1.0% organic material, 10% water Correct Answer: 3. 70% inorganic
material, 20% organic material, 10% water
This embrasure is located btwn the marginal ridge + contact area and can be formed by a sickle
explorer in soft amalgam @ a 45deg angle:
1. facial
2. lingual
3. occlusal
4. gingival Correct Answer: 3. occlusal
An overextension (flash) @ the cavosurface margin is indicated by:
1. a space btwn the restoration + the enamel wall
2. a catch as the explorer moves from moves from tooth to amalgam
3. a catch as the explorer moves from amalgam to tooth
4. a catch as the explorer is moved in both directions Correct Answer: 2. a catch as the explorer
moves from moves from tooth to amalgam
Which of the teeth in the mouth is the largest with 5 functional cusps?
