El Maestro Operative (DONE)| 194
QUESTIONS| VERIFIED
DENTAL INDEX & EPIDEMIOLOGY Correct Answer:
1. DMFT, DMFS, DEFT, DEFS Correct Answer: DMFT- decayed, missing, or
filled teeth
DMFS- decayed, missing, or filled surfaces
DEFT- decayed, extracted, or filled teeth
DEFS- decayed, extracted, or filled surfaces
- index with "E/extraction" = primary dentition only
2. Know what DMFS stands for Correct Answer: decay missing filled surface
3. DMFS is for Correct Answer: surfaces-includes 3rd molars
4. DMF index - measures Correct Answer: measures how permenant dentition is
affected by caries
5. DMFT - measures Correct Answer: measures the amount tooth decay
6. DMFT is for primary or permanent teeth? Correct Answer: permanent teeth (no
3rd molars or primary teeth)
7. Which race has a higher F in DMFT index? Correct Answer: White
8. Which ethiticity has most caries in kid population (highest caries incident)?
Correct Answer: Hispanics
9. Which population has the most number of UNRESTORED caries? Correct
Answer: Blacks
10. For adults, black males for untreated decay...DMFT Correct Answer:
11. Which of the following acronyms is only used for kids? PI, DEFT, DMF, OHI-
S, etc Correct Answer: - DEFT = for primary dentition (e=extraction)
DENTAL BURS & HAND INSTRUMENTS Correct Answer:
,1. Differences between 245 and 330 burs: shape, angle formed, length Correct
Answer: All other dimensions the same except for length.
- 245 bur is 3mm in length while 330 is 1.5mm.
2. Which bur do you use for peds?
A.245
B.18
C.51 Correct Answer: A.245
3. Which is best for OCCLUSAL CONVERGENCE in a prep? Correct Answer:
245
4. Diameter of 245 bur? Correct Answer: 0.8 mm
5. What bur use for AMALGAM RETENTION in class II? 245 or 330 Correct
Answer: 245
6. Example of PEAR shape bur: 329, 330, 245 (330L) Correct Answer: - 245 =
330L = pear and elongated bur (tip is a cone)
7. Bur used that CONVERGES F & L walls?
a. #245
b. #7901
c. #169 Correct Answer: 169 (tapered bur, 0.9 diameter) - If 169 is not thre, pick
245.
8. What bur do you use to shape CONVERGENT walls for AMALGAM Correct
Answer: 169
9. Burs for smoothing out preps?
a. More flutes and shallow
b. more flutes and deeper
c. less flutes and shallow
d. less flutes and deeper Correct Answer: More flutes and shallow (this is what red
burs are)
10. More # of blades on carbide burs: Correct Answer: SMOOTHER,
DECREASED CUTTING EFFICIENCY
, 11. Which high speed bur gives a smoother surface? Correct Answer: Plain cut
fissure bur is more smooth while cross cut fissure have a higher cutting efficiency
12. Bur used for polishing - Correct Answer: STEEL FOR POLISH
Carbide have more threads
13. What is the correct method of excavation of deep caries?
a. Large bur from periphery to the center
b. Large bur from center to periphery
c. Small bur from periphery to center
d. Small bur from center to the periphery Correct Answer: a. Large bur from
periphery to the center
- use the largest bur that fits, and go around the periphery and then towards the
deepest
14. Rotary high speed, how many round per min? Correct Answer: 200,000 RPM
- slowspeed goes 20-30k average, endo = usually 800
15. Chisel vs spoon application: Correct Answer: Chisels are intended primarily to
cut enamels, but spoons remove caries & carve amalgams
16. What's the difference between an enamel hatchet & gingival marginal trimmer?
Correct Answer: Both hatchet but GMT has curved blade and angled cutting edge
while Enamel HA has cutting edge in plane of handle
17. Main difference and advantage of using GMT instead of Enamel hatchet?
a. bi-angled cutting surface
b. angle of the blade
c. push/pull action instead of Correct Answer: b. angle of the blade
18. What do you NOT use to BEVEL an inlay prep?
a. enamel hatchet
b. ging marg trimmer
c. flame diamond bur
d. carbide bur Correct Answer: a. enamel hatchet
19. What do u NOT use when BEVELING GINGIVAL margins? Correct Answer:
Tapered diamond
- Causes enamel fracture
QUESTIONS| VERIFIED
DENTAL INDEX & EPIDEMIOLOGY Correct Answer:
1. DMFT, DMFS, DEFT, DEFS Correct Answer: DMFT- decayed, missing, or
filled teeth
DMFS- decayed, missing, or filled surfaces
DEFT- decayed, extracted, or filled teeth
DEFS- decayed, extracted, or filled surfaces
- index with "E/extraction" = primary dentition only
2. Know what DMFS stands for Correct Answer: decay missing filled surface
3. DMFS is for Correct Answer: surfaces-includes 3rd molars
4. DMF index - measures Correct Answer: measures how permenant dentition is
affected by caries
5. DMFT - measures Correct Answer: measures the amount tooth decay
6. DMFT is for primary or permanent teeth? Correct Answer: permanent teeth (no
3rd molars or primary teeth)
7. Which race has a higher F in DMFT index? Correct Answer: White
8. Which ethiticity has most caries in kid population (highest caries incident)?
Correct Answer: Hispanics
9. Which population has the most number of UNRESTORED caries? Correct
Answer: Blacks
10. For adults, black males for untreated decay...DMFT Correct Answer:
11. Which of the following acronyms is only used for kids? PI, DEFT, DMF, OHI-
S, etc Correct Answer: - DEFT = for primary dentition (e=extraction)
DENTAL BURS & HAND INSTRUMENTS Correct Answer:
,1. Differences between 245 and 330 burs: shape, angle formed, length Correct
Answer: All other dimensions the same except for length.
- 245 bur is 3mm in length while 330 is 1.5mm.
2. Which bur do you use for peds?
A.245
B.18
C.51 Correct Answer: A.245
3. Which is best for OCCLUSAL CONVERGENCE in a prep? Correct Answer:
245
4. Diameter of 245 bur? Correct Answer: 0.8 mm
5. What bur use for AMALGAM RETENTION in class II? 245 or 330 Correct
Answer: 245
6. Example of PEAR shape bur: 329, 330, 245 (330L) Correct Answer: - 245 =
330L = pear and elongated bur (tip is a cone)
7. Bur used that CONVERGES F & L walls?
a. #245
b. #7901
c. #169 Correct Answer: 169 (tapered bur, 0.9 diameter) - If 169 is not thre, pick
245.
8. What bur do you use to shape CONVERGENT walls for AMALGAM Correct
Answer: 169
9. Burs for smoothing out preps?
a. More flutes and shallow
b. more flutes and deeper
c. less flutes and shallow
d. less flutes and deeper Correct Answer: More flutes and shallow (this is what red
burs are)
10. More # of blades on carbide burs: Correct Answer: SMOOTHER,
DECREASED CUTTING EFFICIENCY
, 11. Which high speed bur gives a smoother surface? Correct Answer: Plain cut
fissure bur is more smooth while cross cut fissure have a higher cutting efficiency
12. Bur used for polishing - Correct Answer: STEEL FOR POLISH
Carbide have more threads
13. What is the correct method of excavation of deep caries?
a. Large bur from periphery to the center
b. Large bur from center to periphery
c. Small bur from periphery to center
d. Small bur from center to the periphery Correct Answer: a. Large bur from
periphery to the center
- use the largest bur that fits, and go around the periphery and then towards the
deepest
14. Rotary high speed, how many round per min? Correct Answer: 200,000 RPM
- slowspeed goes 20-30k average, endo = usually 800
15. Chisel vs spoon application: Correct Answer: Chisels are intended primarily to
cut enamels, but spoons remove caries & carve amalgams
16. What's the difference between an enamel hatchet & gingival marginal trimmer?
Correct Answer: Both hatchet but GMT has curved blade and angled cutting edge
while Enamel HA has cutting edge in plane of handle
17. Main difference and advantage of using GMT instead of Enamel hatchet?
a. bi-angled cutting surface
b. angle of the blade
c. push/pull action instead of Correct Answer: b. angle of the blade
18. What do you NOT use to BEVEL an inlay prep?
a. enamel hatchet
b. ging marg trimmer
c. flame diamond bur
d. carbide bur Correct Answer: a. enamel hatchet
19. What do u NOT use when BEVELING GINGIVAL margins? Correct Answer:
Tapered diamond
- Causes enamel fracture
