M8 Anatomy (Ch. 9 & 10)

Which patient profile (of the mandible) would commonly be associated with severe class Il occlusion?

Retrognathic

True or false? Tooth #26 occludes with teeth #7 and 8.

False

1. In ideal class I occlusion, the maxillary canine opposes (occludes with):

A. The incisal edge of a mandibular lateral incisor

B. Both mandibular first and second premolars

C. The distal marginal ridge of a mandibular lateral incisor

D. A mandibular canine and first premolar

E. A mandibular canine and a mandibular lateral incisor

D

2. Which one of the following statements does NOT define the ideal relationship of permanent maxillary and mandibular teeth in ideal (class I) occlusion?

A. The facial surfaces of maxillary molars are more facial than the facial surfaces of mandibular molars.

B. The incisal edges of maxillary anterior teeth are more facial than the incisal edges of mandibular anterior teeth.

C. Lingual cusps of mandibular posterior teeth rest in the occlusal fossae areas of maxillary posterior teeth.

D. Lingual cusps of maxillary posterior teeth rest in the occlusal fossae areas of mandibular posterior teeth.

C

3. Which of the following defines the relationship of first molars in ideal class I occlusion?

A. The tip of the distobuccal cusp of the maxillary first molar is aligned directly over the distobuccal groove on the mandibular second molar.

B. The tip of the distobuccal cusp of the maxillary first molar is aligned directly over the mesiobuccal groove on the mandibular first molar.

C. The tip of the mesiobuccal cusp of the maxillary first molar is aligned directly over the distobuccal groove on the mandibular first molar.

D. The tip of the mesiobuccal cusp of the maxillary first molar is aligned directly over the mesiobuccal groove on the mandibular first molar.

E. The tip of the distobuccal cusp of the maxillary first molar is aligned directly over the distal triangular fossa on the mandibular first molar.

D

4. What structure occludes into the mesiobuccal groove of the mandibular first molar in ideal class I occlusion?

A. Mesiobuccal cusp of the maxillary second molar

B. Distobuccal cusp of the maxillary first molar

C. Mesiolingual cusp of the maxillary first molar

D. Mesiobuccal cusp of the maxillary first molar

E. Mesial marginal ridge of the maxillary first molar

D

5. In ideal class I occlusion with teeth held tightly together, which statement is NOT true?

A. The right maxillary central incisor is positioned labial to the right mandibular central incisor.

B. The mesial surface of tooth #8 contacts the mesial surface of tooth #9.

C. The distal surface of the maxillary central incisor is more distal than the distal surface of the mandibular central incisor.

D. The maxillary canine occludes in the facial embrasure between the mandibular canine and lateral incisor.

E. When viewed from the facial, a portion of the incisal third of the mandibular central incisor is not visible due to the vertical overlap of the maxillary central incisors.

D

6. Which of the following describes ideal tooth relationships with teeth closed tightly together?

A. The mesiobuccal cusp of the maxillary second molar occludes with the mesiobuccal groove of the mandibular second molar.

B. The mesiobuccal cusp of the maxillary first molar occludes with the distobuccal groove of the mandibular first molar.

C. The facial cusps of maxillary posterior teeth occlude in the fossa of mandibular posterior teeth.

D. The lingual cusps of the mandibular posterior teeth occluded in the fossa of maxillary teeth.

E. Tooth # 25 occludes with (touches) only one tooth: #8.

E

7. In ideal occlusion with the teeth in maximum intercuspal position, which (if any) statement is true?

A. The incisal edges of maxillary anterior teeth are lingual to the incisal edges of mandibular anterior teeth.

B. The buccal surfaces of maxillary posterior teeth are lingual to those in the mandibular arch.

C. The lingual cusps of mandibular posterior teeth rest in the occlusal fossae of maxillary teeth.

D. The buccal cusps of mandibular posterior teeth rest in occlusal fossae of maxillary teeth.

E. All statements are false.

D

8. In class I ideal occlusion relationships between maxillary and mandibular teeth, which of the following is true?

A. The lingual cusp tips of the mandibular posterior teeth occlude into the fossa of maxillary posterior teeth.

B. The buccal cusp tips of the maxillary posterior teeth occlude into the fossa of mandibular posterior teeth.

C. The buccal surfaces of the mandibular posterior teeth are buccal to maxillary teeth.

D. Maxillary incisors have their labial surfaces more lingual than the facial surfaces of the mandibular incisors.

E. The maxillary first molar occludes with the mandibular first molar.

E

10. When the mandible is in its physiologic rest position (for example, during relaxed breathing), the contact of teeth is:

A. Slight

B. Maximum

C. Premature

D. Nonexistent

E. In an intercuspal position

D

9. In class I ideal occlusion, tooth #6 should occlude between which two teeth?

A. #25 and 26

B. #26 and 27

C. #27 and 28

D. #28 and 29

E. #29 and 30

C

11. Which patient profile (of the mandible) would commonly be associated with severe class II occlusion?

A. Prognathic

B. Retrognathic

C. Mesognathic

D. Orthognathic

B

12. Which muscles forcibly close the teeth together when masticating food?

A. Medial pterygoids and both lateral pterygoids

B. Lateral pterygoids (right or left) and masseter

C. Masseter and medial pterygoids

D. Medial pterygoids and horizontal fibers of the temporalis

C

13. Which of the following terms is used to describe the palpable or visible movement (vibration) of the tooth when subjected to occlusal forces?

A. Crepitus

B. Unstable occlusion

C. Fremitus

D. Balancing (nonworking) contact

E. Working contact

C

14. With teeth in ideal occlusion and in maximum intercuspal position, the mandibular central incisor occludes with the —

A. Maxillary central and lateral incisor

B. Maxillary lateral incisor only

C. Maxillary central incisor only

D. Maxillary lateral incisor and mesial marginal ridge of the maxillary canine

C

15. Choose the best example of parafunctional occlusion.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla. D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

A

16. Choose the best description for anterior crossbite.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

F

17. Choose the best description for overjet.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

B

18. Choose the best description for class III occlusal relationship.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

D

19. Choose the best description for posterior crossbite

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13, and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

E

20. Choose the best description for deep overbite.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingùal to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

C

21. Choose the best description for centric relation.

A. Pipe stem chewing

B. Horizontal distance between incisal surfaces of mandibular and maxillary incisors

C. Teeth #24 and 25 touch incisive papilla.

D. Tooth #5 occludes with teeth #29 and 30.

E. Linguoversion of teeth #12, 13 and 14 by more than one tooth width

F) Teeth #7, 8, 9 and 10 are lingual to #23, 24, 25, and 26.

G) Relaxed position between maxillae and mandible

G

22. The amount of vertical overlap of maxillary and mandibular anterior teeth is called ____

overbite

23. For what dental term is the following definition: "The incisocervical relationship between the incisal edges of the maxillary and mandibular anterior teeth and the gcclusocervical relationship between the buccal cusps of maxillary and mandibular posterior teeth"?—-

vertical overlap (overbite)

25. True or false? The nonfunctional cusps of maxillary molars are the buccal cusps.

False

26. True or false? Nonsupporting cusps of posterior teeth articulate or occlude with the fossa or marginal ridge area of opposing teeth.

False

1. Which G.V. Black class of dental caries on a posterior tooth is best detected by using bitewing radiographs on a posterior tooth?

A. Class I

B. Class II

C. Class III

D. Class IV

E. Class V

B

2. Caries that is confined to the facial surface of a canine is most likely classified (according to Dr. G.V. Black) as:

A. Class I

B. Class II

C. Class III

D. Class IV

E. Class V

E

3. Selecting from the following, which tooth and surface are most likely to exhibit pit and fissure caries?

A. #18, facial surface

B. #19, lingual surface

C. #4, buccal surface

D. #15, buccal surface

E. #9, incisal surface

A

4. Which cavosurface margin is possible on a buccal class V amalgam restoration?

A. Buccal

B. Facial

C. Lingual

D. Occlusal

D

5. 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?

A. Attrition

B. Abrasion

C. Erosion

D. Hypoplasia

E. Primary

B

6. Where is interproximal (mesial or distal) caries located?

A. Just buccal to the proximal contact area

B. Just lingual to the proximal contact area

C. Just above the proximal contact area

D. Just below the proximal contact area

E. Just cervical to the proximal contact area

E

7. Which of the following are possible cavosurface margins of an occlusal amalgam restoration?

A. Gingival (cervical), occlusal, facial, and lingual

B. Buccal, lingual, mesial, and axial

C. Mesial, distal, buccal, and lingual

D. Occlusal, buccal, lingual, and gingival (cervical)

E. Buccal, lingual, distal, and gingival (cervical)

C

8. What type of tooth destruction is caused by severe wear of teeth from placing a lemon wedge in the buccal vestibule (as is the habit in some countries)?

A. Abrasion

B. Attrition

C. Erosion

D. Hypoplasia

E. Abfraction

C

9. Which tooth is most likely to have class I facial caries?

A. #14

В. #37

C. #25

D. #20

E. #30

E

10. Which G.V. Black classification of caries would most likely have a restoration that could be abbreviated MFLC on tooth #8?

A. Class I

B. Class II

C. Class III

D. Class IV

E. Class V

C

11. Which statement describes the best way to confirm the presence of a small class III carious lesion in a patient with all of his or her teeth?

A. Use transillumination.

B. Use a sharp explorer to determine sensitivity.

C. Use an explorer to detect tugback.

D. Use a mirror and good light under rubber dam.

E. Use a bitewing radiograph.

A

12. Which of the following cavosurfaces would occur on a class II mesio-occlusal amalgam?

A. Mesial

B. Distal

C. Axial

D. Pulpal

E. Occlusal

B

13. Which of the following internal line angles would occur in a class II mesio-occlusal amalgam?

A. Mesioaxial

B. Axiopulpal

C. Axiomesial

D. Gingivopulpal

E. Mesio-occlusal

B

27. True or false? Supporting cusps of posterior teeth articulate within the opposing occlusal table or on the crest of marginal ridges.

False