Quizlet M7 Anatomy (Ch. 6 & 7 )

1. What permanent tooth erupts into the space previously held by the primary second molar?

A. First molar

B. Second molar

C. First premolar

D. Second premolar

D

2. Which statement is TRUE regarding the relative size of the following pairs of teeth?

A. Permanent maxillary central incisors are smaller than permanent maxillary lateral incisors.

B. Permanent mandibular central incisors are larger than permanent mandibular lateral incisors.

C. Primary mandibular first molars are smaller than primary mandibular second molars.

D. Primary mandibular second molars are larger than permanent mandibular first molars.

E. Permanent maxillary first molars are smaller then permanent maxillary second molars.

C

3. When viewed from the facial, incisor crown outlines are generally more convex on the distal than on the mesial EXCEPT on which incisor?

A. Permanent maxillary central incisor

B. Permanent maxillary lateral incisor

C. Permanent mandibular central incisor

D. Permanent mandibular lateral incisor

E. Primary maxillary central incisor

C

4. What is the Universal number of the adult (secondary) tooth that erupts into the space that was previously occupied by primary tooth B?

A. #1

В. #3

C. #5

D. #7

E. # 10

C

5. What would you estimate to be the dental age of a child with the following teeth: all permanent incisors and permanent first molars, and all primary canines and molars?

A. 2 to 5 years

B. 5 to 7 years

C. 8 to 9 years

D. 10 to 11 years

E. Over 12 years

C

6. Which anterior teeth are wider mesiodistally than incisocervically? (Read all answers.)

A. Primary central incisors

B. Primary canines

C. Permanent central incisors

D. Permanent canines

E. Both the primary central incisors and the permanent central incisors

A

7. Which of the following is NOT a characteristic of primary (deciduous) teeth?

A. Primary teeth are whiter than permanent teeth.

B. Primary teeth have a marked constriction at the cervical line.

C. Primary molars have thin, widely spread roots.

D. Primary molars have sharper cusps and more prominent grooves than permanent teeth.

E. Primary teeth have relatively thinner enamel than permanent teeth.

D

8. When distinguishing a primary maxillary second molar from a permanent maxillary first molar, only the permanent maxillary first molar:

A. Has a distolingual cusp

B. Has roots positioned mesially and distally

C. Has a relatively longer root trunk

D. Has a more prominent mesiobuccal cervical ridge

E. Is likely to have a cusp of Carabelli

C

9. Tooth #30 forms within the mandible (prior to erupting) at which location?

A. Between the mesial and distal roots of the primary mandibular first molar

B. Between the mesial and distal roots of the primary mandibular second molar

C. Between the mesial, distal, and palatal roots of the primary mandibular first molar

D. Between the mesial, distal, and palatal roots of the primary mandibular second molar

E. None of these choices is correct.

E

10. During what age span are primary teeth in the process of erupting (emerging) into the mouth?

A. Birth to 6 months

B. 6 months to 2 years

C. 2 to 6 years

D. 6 to 9 years

E. 9 to 12 years

B

11. Using the Universal number or letter, which tooth erupts just distal to primary tooth J?

A. Tooth #13

B. Tooth #14

C. Tooth #15

D. Tooth I

E. Tooth K

B

12. How many teeth should be visible in the mouth of a 3-year-old?

A. 10

В. 20

С. 24

D. 28

B

13. Which statement is TRUE regarding primary anterior teeth?

A. Mamelons are prominent.

B. Perikymata are prominent.

C. Cervical ridges are prominent.

D. Roots are short in proportion to crowns.

E. Roots are bent lingually.

C

14. Which two teeth have their mesial proximal contact more cervical than their distal proximal contact?

A. Primary maxillary canine and permanent mandibular second premolar

B. Primary mandibular canine and permanent mandibular first premolar

C. Primary maxillary canine and permanent maxillary first premolar

D. Primary mandibular canine and permanent maxillary first premolar

E. Primary maxillary canine and permanent mandibular first premolar

E

15. Using the Universal number or letter, the only incisor where the crown is wider mesiodistally than long incisocervically is:

A. Tooth F

B. Tooth #7

C. Tooth #8

D. Tooth D

E. Tooth G

A

16. During most of their eighth year, children have how many teeth in their mouth (primary and secondary)?

A. 16

В. 24

С. 26

D. 28

E. 30

B

17. What would you estimate is the dental age of a person who has 28 teeth (either primary or permanent)?

A. 7 to 8 years

B. 9 to10 years

C. 10 to 11 years

D. 12 to 16 years

E. Over 20 years

D

18. Which of the following teeth (if any) replaces primary tooth J?

A. #12

B. #13

C. #14

D. #20

E. None of these teeth replace tooth J.

B

19. Which primary tooth may resemble a premolar from the occlusal view, but has three roots?

A. Tooth H

B. Tooth I

С. Тоoth J

D. Tooth K

E. Tooth L

B

20. What is the Universal number of the adult (secondary) tooth that erupts into the space that was previously occupied by primary tooth K?

A. #4

B. #13

C. #20

D. #19

E. #29

C

21. During what years are all of the primary teeth in the mouth?

A. 6 months to 18 months

B. 3 to 5 years

С.6 to 9 years

D. 9 to 12 years

E. Over 12 years

B

22. What would you estimate is the dental age of a child if the only secondary (adult) teeth present were #3, 14, 19, 24, 25, and 30?

A. 2 to 5 years

B. 7 to 8 years

C. 9 to 10 years

D. 11 to 12 years

E. Over 12 years

B

23. Which (if any) of these permanent teeth forms within the bone just apical to primary tooth T?

A. #28

B. #29

C. #30

D. #31

E. None of these choices is correct.

B

24. What would you estimate is the dental age of a child if the only secondary (adult) teeth present were all adult incisors, adult mandibular canines, mandibular first premolars, and adult maxillary and mandibular first molars?

A. 2 to 5 years

B. 5 to 7 years

C. 8 to 9 years

D. 10 to 11 years

E. Over 12 years

D

25. All but one of the following are traits of all primary teeth that can be used to distinguish them from permanent teeth. Which one is NOT useful for distinguishing these teeth?

A. Primary teeth have greater cervical bulges.

B. Primary teeth have relatively thinner and longer roots.

C. Primary teeth are whiter.

D. Primary incisors are larger than their successors, providing room for their eruption.

E. Primary teeth have relatively larger pulps.

D

26. What would you estimate to be the dental age of a child with the following teeth: all secondary incisors and secondary first molars and all primary canines and molars?

A. 2 to 4 years

B. 5 to 7 years

C. 8 to 9 years

D. 10 to 11 years

E. Over 12 years

C

27. The permanent maxillary lateral incisor erupts at age:

A. 6 to 7 years

B. 7 to 8 years

C. 8 to 9 years

D. 9 to 10 years

C

28. The mandibular lateral incisor erupts at age:

A. 6 to 7 years

B. 7 to 8 years

C. 8 to 9 years

D. 10 years

B

29. The permanent maxillary canine erupts at age:

A. 6 to 7 years

B. 7 to 8 years

C. 8 to 9 years

D. 9 to 10 years

E. 11 to 12 years

E

30. The permanent mandibular canine erupts at age:

A. 6 to 7 years

B. 8 to 9 years

C. 9 to 10 years

D. 11 to 12 years

C

31. A mandibular primate space is usually found in the primary dentition between the:

A. Central incisors

B. Central and lateral incisors

C. Lateral incisor and canine

D. Canine and first molar

E. First and second molars

D

32. In the normal dentition, humans have how many non-succedaneous teeth?

A. 20

В. 16

С. 14

D. 12

D

33. The roots of a primary maxillary second molar are flared to allow space for the developing tooth bud of which permanent maxillary tooth?

A. First premolar

B. Second premolar

C. First molar

D. Second molar

B

34. In the primary teeth, a prominent transverse ridge is most likely found on the:

A. Maxillary first molar

B. Mandibular first molar

C. Maxillary second molar

D. Mandibular second molar

B

35. The permanent maxillary second molar erupts at age:

A. 6 to 7 years

B. 8 to 9 years

C. 10 to 11 years

D. 12 to 13 years

E. 14 to 15 years

D

36. On the primary maxillary first molar, the number and formation of the roots closely correspond to the roots of the:

A. Permanent mandibular third molar

B. Permanent maxillary first premolar

C. Permanent mandibular first premolar

D. Permanent maxillary first molar

E. Permanent mandibular first molar

D

37. Primary molars differ from permanent molars in that primary molars have:

A. Less bulbous crowns

B. More and deeper pits and fissures

C. Greater divergence of roots

D. None of these choices is correct.

C

38. Which of the following permanent teeth should have erupted long before the patient is 12 years old?

A. Maxillary canine

B. Mandibular second molar

C. Maxillary lateral incisor

D. Mandibular second premolar

C

39. Which permanent incisors are most likely to erupt first?

A. Maxillary centrals

B. Mandibular laterals

C. Maxillary laterals

D. Mandibular centrals

D

40. Which of the following permanent teeth is NOT succedaneous?

A. #4

B. #26

C. #14

D. #13

E. #12

C

41. Which primary tooth does not resemble any permanent tooth?

A. Maxillary second molar

B. Maxillary lateral incisor

C. Mandibular first molar

D. Mandibular second molar

C

43. The only incisor whose mesiodistal diameter is greater than its crown height is the—

primary maxillary central incisor

44. The primary maxillary first molar has three or four (number of) cusps and they are designated(named) ——,distobuccal, mesiolingual, and distolingual (sometimes absent).

Mesiobuccal

45. The letters used to designate the four primary second molars are A, J, —and T.

K

46. Primary posterior teeth, particularly the first molars, have a pronounced elevation of enamel found on the mesial half of the buccal surface, which is called the—

cervical ridge

47. In which primary tooth is the mesial fossa separated from the major part of the occlusal table by a prominent transverse ridge?

mandibular first molar

49. True or false? Primary teeth have very pronounced mamelons.

False

50. True or false? The primary mandibular first molar has two roots and four cusps.

True*

51. True or false? Primary teeth have more prominent cervical ridges than permanent teeth.

False**

52. True or false? The mesiolingual line angle of the primary mandibular first molar is much more rounded than the other line angles of this tooth.

False

53. True or false? The root trunk of the primary mandibular first molar is longer proportionally than that of the permanent mandibular first molar.

False

54. True or false? The eruption sequence of the primary teeth is central incisor, lateral incisor, canine, first molar, and second molar.

False

55. True or false? As on the permanent canine, the distal cusp ridge of the maxillary primary canine is the shortest.

False

1. Which of the following does NOT describe healthy gingiva?

A. Healthy sulcus depths tend to be 3 mm or less.

B. Margins are knife-edged in profile.

C. Surface texture is smooth and shiny.

D. Consistency is resilient and firm.

E. Color is coral pink or pink (possibly with melanin).

C

2. Which term is used to describe a lack of attached gingiva?

A. Gingival recession

B. Tooth mobility

C. Probe depths greater than 3 mm

D. Mucogingival defect

E. Furcation involvement

D

3. Which of the following descriptors does NOT apply to normal, healthy gingiva?

A. Coral pink or pink with masking melanin

B. Resilient

C. Stippled

D. Spongy

E. Knife-edged in profile

D

4. What is the depth of the gingival sulcus in healthy gingiva?

A. Less than 1 mm

B. 1 to 3 mm

C. 2 to 5 mm

D. 3 to 7 mm

E. Greater than 5 mm

B

5. What is the junction between the attached gingiva and the alveolar mucosa called?

A. Mucogingival junction

B. Free gingival groove

C. Connective tissue attachment

D. Junctional epithelium

E. Gingival sulcus

A

6. Which characteristic does NOT apply to normal, healthy gingiva?

A. The consistency is firm and resilient.

B. Only slight bleeding occurs upon probing with a periodontal probe.

C. The color is coral pink, possibly masked by melanin.

D. The texture is stippled (somewhat like an orange peel).

E. Margins are knife-edged in profile. .

B

7. When an isolated area of tooth root has no bone covering it, what is this condition called?

A. Dehiscence

B. Furcation involvement

C. Gingival recession

D. Exostosis

E. Periapical involvement

A

An 8 year old child has how many teeth in their mouth (primary and permanent)?

24

The permanent mandibular central incisors erupt at age:

6 to 7 years

1. What term can be used to describe the condition where no teeth form within the jaws?

A. Total anodontia

B. Complete Taurodontia

C. Hutchinson's syndrome

D. Hypodentinogenesis imperfecta

E. Ankvlosis.

A

2. When examining a large group of people, which two teeth are most likely to be congenitally missing? (The Universal numbering system is used.)

A. #7 or 10

B. # 8 or 9

C. #1 or 16

D. #20 or 29

C

3. When examining a large group of people, what is the most frequent location where extra (supernumerary) permanent teeth may be found?

A. Maxillary incisor area

B. Mandibular premolar area

C. Mandibular incisor area

D. Maxillary premolar area

A

4. A person has four mandibular incisor crowns, but one of them appears twice as wide as the others. On the radiographs this double-wide crown appears to share one root with one canal. What is this condition called?

A. Fusion

B. Gemination or twinning

C. Peg lateral incisors

D. Hutchinson's incisors

E. Two mesiodens

B

5. A person appears to have four mandibular incisor crowns, but two of the crowns are joined together. The roots of this double-wide crown appear separate with separate root canals. What is this condition?

A. Fusion

B. Gemination or twinning

C. Peg lateral incisors

D. Hutchinson's incisors

E. Two mesiodens

A

6. Congenital syphilis may cause which of the following dental malformations? (Read all choices before answering.)

A. Talon cusp

B. Hutchinson's incisors

C. Mulberry molars

D. Dens in dente

E. Hutchinson's incisors and mulberry molars

E

7. Which dental malformation appears as small, round enamel growths located on the root furcations of molars?

A. Fusion

B. Enamel pearls

C. Dens in dente

D. Concrescence

E. Hypercementosis

B

8. It might be difficult for a dentist to extract a tooth exhibiting dilaceration. What is dilaceration?

A. Accessory roots

B. Ankylosis

C. Fusion

D. Hypercementosis

E. A severely bent root

E

9. By definition, what term describes a tooth when its mesial surface is facing toward the facial?

A. Impacted

B. Transposed

C. Tooth rotation (Torsiverted)

D. Dilaceration

E. Flexion

C

10. Three adjacent molars in the mouth of a 40-year-old person are lined up but the occlusal surface of the second molar is much shorter than that of the adjacent first or third molars. Radiographs indicate the absence of a periodontal ligament space around the second molar. This condition is called:

A. A retained deciduous tooth

B. Hypocementosis

C. Concrescence

D. Ankylosis

E. Attrition

D

11. Enamel discoloration or pitting may be caused by which of the following? (Read all choices before answering.)

A. Enamel dysplasia

B. Excess fluoride in the diet

C. High fever

D. Local infection

E. All of these choices are correct

E

What tooth has deep, shovel shaped lingual fossa with pit, most likely to be peg?

Maxillary lateral incisors

12. The breaking off of enamel rods near the cementoenamel junction due to heavy occlusal forces is most appropriately called:

A. Abrasion

B. Erosion

C. Attrition

D. Abfraction

D

By definition, which type of enamel destruction is likely to occur in a patient who brushes with a scrubbing motion using a brush with stiff bristles?

Abrasion

What are some features of primary teeth?

A. Have more bulbous (rounded) crowns

B. are whiter

C. greater root divergence

D. All the above.

D

Which one of the following teeth that are normally single rooted are most likely to have a bifurcated root?

mandibular canines

Which two of the following are most likely to exhibit unusually formed crown morphology?

maxillary lateral incisor, maxillary third molars

The initiation of the mixed dentition period is marked by which of the following events?

Eruption of the adult mandibular first molar

At what aged is mixed dentition present

6-12 years

How many succedaneous teeth are there?

20

Second primary molars are replaced by

Second premolars

how many roots does a primary maxillary molar have

3

What permanent tooth erupts distally to #J

#14

The primary maxillary first molar has _______ (number of) roots

Three

How many non-succedaneous teeth are there?

12

What permanent tooth replaces #A

#4