🌟❗Quizlet Ch. 1-5 (@Ejosuna0513)

35. Using the international (Federation Dentaire) numbering system, a French dentist identified decay in tooth #42. What is the Universal number of that tooth that would be used when supplying information to an insurance company in the United States?

A. #42

B. #24

C. #23

D. #26

E. None of these answers is correct.

D

⭐1. How many total molars are there in the complete adult human dentition?

A. Four

B. Six

C. Eight

D. Ten

E. Twelve

E

2. Which two teeth have their mesial surfaces contacting one another? (Universal numbers are used here to denote the teeth.)

A. #1 and #16

B. #25 and #26

C. #1 and #32

D. #8 and #9

E. #17 and #16

D

⭐3. Which tissue makes up the majority of the bulk of a tooth?

A. Enamel

B. Dentin

C. Lamina dura

D. Cementum

E. Pulp

B

4. Which of the following is NOT one of the four cusp ridges (of the gothic pyramid) on the buccal cusp of a premolar?

A. Marginal ridge

B. Distal cusp ridge

C. Mesial cusp ridge

D. Buccal cusp ridge

E. Triangular ridge

A

⭐5. On incisors, the number of lobes on the facial surface (which is the same as the number of mamelons on the incisal surface) is:

A. One

B. Two

C. Three

D. Four

E. Five

C

6. Which of the following is NOT a possible line angle of an incisor crown?

A. Mesiolabial line angle

B. Distolingual line angle

C. Mesiolingual line angle

D. Mesiodistal line angle

E. Distolabial line angle

D

7. When viewed from the proximal, the lingual crest of curvature (height of contour) for posterior teeth is most likely located in the ____________ third.

A. Middle

B. Cervical

C. Occlusal

D. Incisal

E. Lingual

A

⭐8. Which tooth structure is hardest (most calcified)?

A. Enamel

B. Dentin

C. Cementum

D. Pulp

A

9. What two ridges make up the transverse ridge on most premolars?

A. Buccal and lingual oblique ridges

B. Buccal triangular and lingual triangular ridges

C. Mesial and distal marginal ridges

D. Buccal and lingual cusp slopes or cusp arms

E. Buccal and lingual cervical ridges

B

⭐10. What is the correct order of anatomic landmarks of a tooth with two roots beginning at the cementoenamel junction and moving toward the root tip?

A. Cervix, trunk, furcation, apex

B. Trunk, cervix, furcation, apex

C. Trunk, furcation, cervix, apex

D. Cervix, trunk, apex, furcation

E. Furcation, trunk, cervix, apex

A

11. In an adult mouth with ideal tooth alignment and in ideal occlusion, which surface of tooth #16 touches tooth #17? (The tooth numbers are using the Universal numbering system.)

A. Distal

B. Mesial

C. Occlusal

D. Lingual

E. Buccal

C

⭐12. When referring to mandibular anterior tooth surfaces, what term may correctly be used to refer to a facial surface?

A. Palatal

B. Buccal

C. Mesial

D. Lingual

E. Labial

E

13. How many molars are there in the mandible of a person with a complete set of his or her adult dentition?

A. Four

B. Six

C. Eight

D. Ten

E. Twelve

B

⭐14. If two triangular ridges join, what is the entire ridge called?

A. Marginal ridge

B. Transverse ridge

C. Cervical ridge

D. Labial ridge

E. Cusp ridge (mesial or distal)

B

15. What is the general guideline for the location of the height of contour (crest of curvature) on most anterior teeth?

A. The facial height of contour is usually more incisal than the lingual contour.

B. The facial height of contour is usually more cervical than the lingual contour.

C. The facial and lingual heights of contour are both in the cervical third.

D. The facial and lingual heights of contour are both in the middle third.

E. The facial and lingual heights of contour are both in the incisal third.

C

16. Using the Federation Dentaire tooth numbering system, a French dentist identified tooth #12 as missing. What is the Universal number that would be used for identifying this tooth?

A. #15

B. #2

C. #7

D. #10

E. None of these answers is correct.

C

⭐18. What is the universal number for the permanent mandibular left first molar?

A. #3

B. #14

C. #17

D. #19

E. #30

D

⭐17. How many total premolars are there in the complete adult human dentition?

A. Four

B. Six

C. Eight

D. Ten

E. Twelve

C

19. In ideal tooth alignment, what surface of tooth #16 touches tooth #15?

A. Distal

B. Mesial

C. Occlusal

D. Lingual

E. Buccal

B

20. What ridge(s) are made up of either two triangular cusp ridges or one triangular ridge and one distal cusp ridge?

A. Marginal ridge

B. Mesial cusp slope or ridge

C. Transverse ridge

D. Oblique ridge

E. Transverse ridge and oblique ridge

E

21. When viewed from the proximal surface, what is the location of the facial crest of curvature on all teeth?

A. In the occlusal third

B. In the incisal third

C. In the middle third

D. In the cervical third

E. In the proximal third

D

⭐22. When referring to maxillary tooth surfaces, what term is the same as lingual?

A. Palatal

B. Apical

C. Mesial

D. Buccal

E. Labial

A

23. Which (if any) of these teeth exhibit more cervical line curvature on the mesial aspect than on the distal aspect? There is one best answer.

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular canine

D. The maxillary central incisor, maxillary canine, and mandibular canine

E. None of these answers is correct.

D

24. Which trait describes a mandibular canine when compared to a maxillary canine?

A. Incisal wear (faceting) is usually located more lingually on the mandibular canine incisal edge.

B. The lingual ridge is more prominent on the mandibular canine.

C. The crown is wider mesiodistally on the mandibular canine compared to a maxillary canine.

D. The mesial crown outline is in line with the root on the mandibular canine.

E. The cusp angle (before wear) is more acute (sharper) on the mandibular canine.

D

25. Which best describes the mesial incisal cusp ridge of a mandibular canine?

A. The mesial cusp ridge is longer than the distal ridge.

B. The mesial cusp ridge meets the distal cusp ridge to form a sharp cusp tip.

C. The mesial cusp ridge is almost horizontal.

D. The mesial cusp ridge is almost vertical.

E. The mesial cusp ridge is in alignment with the mesial root surface.

C

29. The faciolingual length of a tooth can be measured when viewing the tooth from several views. Which view would NOT be appropriate when measuring the faciolingual dimension?

A. Mesial

B. Occlusal

C. Proximal

D. Labial

E. Distal

D

⭐26. How many molars are there in one quadrant of a normal adult human dentition?

A. One

B. Two

C. Three

D. Six

E. Nine

C

⭐27. When referring to posterior tooth surfaces, what term can be used to refer to a buccal surface?

A. Palatal

B. Facial

C. Mesial

D. Lingual

E. Labial

B

28. Most buccal cusps have four ridges. Which ridge is NOT a part of a cusp?

A. Marginal ridge

B. Mesial cusp slope or ridge

C. Distal cusp slope or ridge

D. Buccal ridge

E. Triangular ridge

A

30. Using the international (Federation Dentaire) numbering system, a French dentist identified decay in tooth #21. What is the Universal number of that tooth that would be used when supplying information to an insurance company in the United States?

A. #1

B. #8

C. #9

D. #16

E. None of these answers is correct.

C

***31. When viewed from the proximal, which tooth (and surface) has the greatest curvature of its cervical line (cementoenamel junction) when compared to all other teeth in the mouth?

A. #8, mesial surface

B. #9, distal surface

C. #10, distal surface

D. #24, mesial surface

E. #25, distal surface

A

32. In a mouth with ideal tooth alignment and in ideal occlusion, which surface of tooth #8 touches tooth #9? (The tooth numbers are using the Universal numbering system.)

A. Distal

B. Mesial

C. Occlusal

D. Lingual

E. Buccal

B

33. How many teeth in the complete adult dentition have a labial surface?

A. Four

B. Six

C. Eight

D. Twelve

E. Twenty

D

34. One facial cusp of a premolar (or molar) has four ridges: a buccal ridge, a mesial cusp ridge, a distal cusp ridge, and a:

A. Marginal ridge

B. Transverse ridge

C. Cervical ridge

D. Labial ridge

E. Triangular ridge

E

36. A transverse ridge is made up of which two ridges?

A. Mesial and distal cusp ridges

B. Buccal and lingual cusp ridges

C. Buccal cusp ridge and triangular ridge

D. Mesial marginal ridge and mesial cusp ridge

E. Two triangular ridges

E

37. Which tooth crowns have the lingual crest of curvature (height of contour) located in the cervical third? (Read all choices before selecting the one best answer.)

A. Maxillary incisors only

B. All incisors only

C. All anterior teeth only

D. All posterior teeth only

E. All teeth

C

38. The broadest (faciolingually) incisal or occlusal embrasure is normally found between which of the following permanent maxillary teeth?

A. Central incisors

B. Central and lateral incisors

C. Lateral incisor and canine

D. First premolar and second premolar

D

⭐39. The borders or limits of the lingual fossa of the maxillary lateral incisor are the cingulum, the distal marginal ridge, the incisal edge or ridge, and the _____________.

mesial marginal ridge

40. In a mesial view of a maxillary central incisor, vertical lines may divide the crown into thirds called labial (or facial), ____, and lingual.

middle

41. What is the correct number, according to the tooth designation system adopted by the American Dental Association, for the mandibular right second molar? ____

#31

42. List four structures that comprise the periodontium. _______, alveolar bone, cementum, periodontal ligament

gingiva

43. Combine some of the following terms to correctly name tooth #14: left, right, lateral, central, maxillary, mandibular, premolar, canine, molar, second, first.

Answer: maxillary left first molar

⭐44. The spaces formed around the point of contact between proximal surfaces of adjacent teeth are called _________.

embrasures (facial, lingual cervical, and incisal or occlusal)

45. The linear slope extending from the cusp tip laterally to the proximal surface is called the_________.

cusp ridge (slope or arm)

46. A conical mass found on the occlusal surface of posterior teeth and that also constitutes the incisal surface of a canine is called a _____.

cusp

47. What is the junction of three surfaces of a tooth called? _____ _____

point angle

48. The term used to indicate the direction toward the tongue or the surface of teeth in contact with or facing the tongue is called the _____ surface.

lingual

⭐49. True or false? The facial height of contour of tooth #8 is located in the middle third of the crown.

False

50. True or false? The marginal ridge height of a posterior tooth (in normal alignment) is most likely the same as the height of the marginal ridge of the approximating tooth.

True*

52. True or false? The facial and lingual height of contour of all anterior teeth is the cervical third of the tooth.

True*

51. True or false? The amount of curvature of the proximal cementoenamel junction diminishes from incisors to molars.

True*

1. When holding both any maxillary and mandibular incisor, which characteristic is most likely to apply to the mandibular incisor but not the maxillary incisor?

A. The cingulum is off center toward the distal on mandibular incisors.

B. The incisal edge is more likely to be labial to the midroot axis line on mandibular incisors.

C. The root is more likely to be straight than bent to the distal on mandibular incisors.

D. The crown has lingual ridges and fossae that are more prominent on mandibular incisors.

E. From the incisal view, the labiolingual dimension is greater than the mesiodistal dimension on mandibular incisors.

E

⭐2. Which tooth has the shortest root relative to its crown?

A. Mandibular lateral incisor

B. Maxillary lateral incisor

C. Mandibular central incisor

D. Maxillary central incisor

D

3. Compared to permanent maxillary lateral incisors, maxillary central incisors are more likely to exhibit:

A. Smaller crowns

B. The cingulum positioned distally

C. Lingual pits

D. Deeper and smaller lingual fossae

E. An outline (from the incisal view) that is more round or oval as opposed to triangular

B

4. Which statement(s) is/are true regarding the wear pattern of the incisal edges of anterior teeth (assuming ideal occlusion)?

A. Maxillary central incisors are likely to exhibit wear on the labial part of the incisal edge.

B. Maxillary canines are likely to exhibit wear on the labial part of the incisal edge.

C. Mandibular incisors are likely to exhibit wear on the facial part of the incisal edge.

D. Mandibular canines are likely to exhibit wear on the lingual part of the incisal edge.

E. None of the above statements are correct

C

⭐5. All but one type of incisor have a mesioincisal angle more square (more acute) than the distal angle. Which type is the EXCEPTION?

A. Maxillary central incisor

B. Maxillary lateral incisor

C. Mandibular central incisor

D. Mandibular lateral incisor

C

6. When viewed from the proximal, which tooth (and surface) has the greatest curvature of its cervical line (cementoenamel junction) when compared to all other teeth in the mouth?

A. #8, mesial surface

B. #9, distal surface

C. #10, distal surface

D. #24, mesial surface

E. #25, distal surface

A

⭐7. Which incisor is considered the most symmetrical?

A. Maxillary central incisor

B. Maxillary lateral incisor

C. Mandibular central incisor

D. Mandibular lateral incisor

C

8. Which incisor is normally the narrowest (mesiodistally)?

A. Maxillary central incisor

B. Maxillary lateral incisor

C. Mandibular central incisor

D. Mandibular lateral incisor

C

9. Which statement is true regarding ALL incisor crowns?

A. When viewed from the facial, distoincisal angles are more square (closer to a right angle) than mesioincisal angles.

B. When viewed from the facial, the crown gets wider from the contact areas toward the cervical line.

C. When viewed from the facial, outlines are pentagon shaped.

D. When viewed from the proximal (mesial or distal), lingual outlines are S-shaped.

E. Mesial proximal contact areas are more cervical than distal contacts.

D

10. Which (if any) of the following incisors has its mesial proximal contact area (crest of curvature) at the same level incisocervically as its distal contact due to its symmetry?

A. Maxillary central incisor

B. Maxillary lateral incisor

C. Mandibular central incisor

D. Mandibular lateral incisor

E. No incisors have the mesial and distal contact areas at the same height.

C

11. Which of the following characteristics is seen most of the time on ALL permanent incisors?

A. The proximal view is pentagon shaped.

B. The crown is wider (in a mesiodistal dimension) than long (in an incisogingival dimension).

C. The root is longer than the crown.

D. The distoincisal angle is more acute (sharper) than the mesioincisal angle.

E. Facial and lingual crests of curvature are located in the middle third.

C

12. When holding both a maxillary and mandibular incisor, which characteristic can be used to determine which tooth is the maxillary incisor?

A. The maxillary incisal edge is rotated or twisted when viewed from the incisal.

B. The maxillary cingulum is centered when viewed from the incisal.

C. The maxillary root has prominent longitudinal grooves in both surfaces.

D. The maxillary crown has lingual ridges and fossa that are more prominent.

D

13. Which statement is true regarding all lateral incisors (maxillary and mandibular)?

A. When viewed from the facial, mesioincisal angles are more square than distoincisal angles.

B. When viewed from the facial, the crown gets wider from the contact areas toward the cervical line.

C. When viewed from the facial, outlines are wedge shaped.

D. When viewed from the proximal (mesial or distal), facial outlines are S-shaped.

E. Roots are slightly shorter than crowns.

A

14. Which incisors are most nearly identical in shape?

A. Mandibular central and lateral incisors

B. Maxillary central and lateral incisors

C. Maxillary right and left central incisors

D. Mandibular right and left central incisors

D

15. When holding both an extracted maxillary and mandibular incisor from the same mouth, which characteristic will apply only to the maxillary incisor?

A. The mesiodistal dimension is narrower compared to the incisocervical length.

B. The lingual anatomy is more prominent (marginal ridges pronounced and fossa deeper).

C. The incisal edge is lingual to, or centered on, the midroot axis.

D. Wear facets slope labially on the incisal edge (that is, facets are more evident on the labial surface at the incisal edge as opposed to on the lingual surface).

E. Proximal contact areas (crests of curvature) are closer to the incisal edge.

B

16. Which of the following characteristics is normally seen on ALL types of permanent incisors?

A. The proximal view is pentagon shaped (five-sided outline).

B. The crown is wider in a mesiodistal dimension than in a faciolingual dimension.

C. The root is over twice as long as the crown.

D. The cervical lines curve more on the distal surface than on the mesial surface.

E. Facial and lingual crests of curvature are located in the cervical third.

E

17. The marginal ridges and cingulum of the permanent maxillary central incisor are _______ than those of the permanent mandibular incisor.

A. Less prominent

B. More prominent

B

18. Which of the following are the anatomic features of permanent maxillary central incisors?

1. Cingula

2. Mamelons

3. Cusp ridges

4. Marginal ridges

5. Cervical lines

6. Triangular ridges

A. 1, 2, 3, 6

B. 1, 2, 4, 5

C. 1, 4, 6

D. 2, 3, 6

B

19. Viewed from the facial aspect, the mandibular lateral incisor is _______ mandibular central incisor.

A. Wider mesiodistally than the

B. Narrower mesiodistally than the

C. The same mesiodistal width as the

A

20. The distal contact area of the permanent maxillary central incisor is located in the:

A. Incisal third.

B. Junction of the incisal and middle thirds.

C. Center of the middle third.

D. Junction of the middle and cervical thirds.

E. Cervical third.

B

21. The distal contact area of the permanent maxillary lateral incisor is located in the:

A. Incisal third

B. Junction of the incisal and middle thirds

C. Center of the middle third

D. Junction of the middle and cervical thirds

E. Cervical third

C

22. Though smaller than the maxillary incisors, mandibular incisors also have _____ (number of) lobes.

4

23. A distinguishing deeper root concavity on the mandibular lateral incisor is on the _____ root surface.

DISTAL

⭐24. _____ are rounded incisal extensions of the labial lobes found on newly erupted or unworn permanent incisor teeth.

Mamelons

25. True or false? Compared to the maxillary incisor, the mandibular incisors have more prominent marginal ridges.

False

26. True or false? The mesial height of contour of the mandibular lateral incisor is closer to the incisal edge than the distal height of contour.

True*

True or false? The maxillary lateral incisor is smaller than the maxillary central incisor in all dimensions except root length.

True*

1. Which of these teeth is likely to form from four lobes?

A. Maxillary central incisor

B. Mandibular lateral incisor

C. Maxillary canine

D. Mandibular canine

E. All of these teeth form from four lobes.

E

2. When holding a maxillary and mandibular canine, which characteristic(s) can be used to distinguish the mandibular canine?

A. A mandibular canine has a less prominent cingulum.

B. The mesial side of a mandibular canine crown and root is relatively straight.

C. The incisal edge of a mandibular canine is located lingual to the center of the tooth.

D. All of these choices are correct.

D

3. Which of the following is NOT normally a characteristic of a mandibular canine?

A. Wear from chewing will be seen more on the facial half of the incisal edge.

B. The distal cusp ridge is longer than the mesial cusp ridge.

C. The cusp is sharper than the cusp of the maxillary canine.

D. The curve of the cervical line on the distal is less pronounced than the curve of the cervical line on the mesial.

C

4. When holding an extracted maxillary and mandibular canine from the same mouth, which characteristic(s) can be used to distinguish the maxillary canine?

A. The maxillary canine has a less prominent cingulum.

B. The mesial side of the maxillary canine crown and root form a relatively straight line.

C. The incisal edge of the maxillary canine is located lingual to the center of the tooth.

D. The cusp of the maxillary canine is more pointed.

E. All of these choices are correct.

D

Which of the following teeth has the most symmetrical crown?

A. Maxillary lateral incisor

B. Mandibular lateral incisor

C. Mandibular central incisor

D. Mandibular canine

E. Maxillary canine

C

Which characteristic (trait) of canines does NOT also apply to all incisors?

A. The crown is wider faciolingually than mesiodistally.

B. The facial and lingual crests of curvature (heights of contour) are located in the cervical third of the crown.

C. The crown is wedge shaped (somewhat triangular) when viewed from the proximal view.

D. When viewed from the mesial or distal, the lingual outline is somewhat S-shaped.

A

With the long axis of the tooth vertical, which ridge is most nearly horizontal?

A. The mesial cusp ridge of the maxillary canine

B. The distal cusp ridge of the maxillary canine

C. The mesial cusp ridge of the mandibular canine

D. The distal cusp ridge of the mandibular canine

E. The mesial marginal ridge of the mandibular canine

C

Which anterior tooth is normally wider mesiodistally than faciolingually?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular central incisor

D. Mandibular lateral incisor

E. Mandibular canine

A

When viewed from the facial, what is the geometric shape of a canine?

A. Triangular (wedge) shaped

B. Rectangular shaped

C. Pentagon shaped

D. Square shaped

E. Rhomboid shaped

C

Which tooth is most symmetrical (the right half and left half look alike)?

A. Maxillary central incisor

B. Mandibular central incisor

C. Maxillary lateral incisor

D. Mandibular lateral incisor

E. Mandibular canine

B

Which statement is NOT true when describing a mandibular canine?

A. From the facial view, the mesial root and crown contours are nearly in a straight line.

B. The incisal edge is positioned more to the lingual on the distal half (distolingual twist).

C. The cingulum and marginal ridges are prominent compared to maxillary canines.

D. The mesial cusp ridge is often close to horizontal (compared to the maxillary canines).

E. The cusp is less pointed (more obtuse) than on the maxillary canine.

C

Which trait can be used to describe all canines and all types of incisors?

A. The mesial contact is more cervical than the distal contact.

B. The mesial crest of curvature (contact area) is more rounded than the distal.

C. The cingulum is positioned more to the mesial.

D. The curvature of the mesial cervical line is greater than the curvature of the distal cervical line.

E. The mesioincisal angle is more rounded than the distoincisal angle.

D

Which tooth root is least likely to have a cavitation on both the mesial and distal surface?

A. Maxillary central incisor

B. Mandibular central incisor

C. Mandibular lateral incisor

D. Maxillary canine

E. Mandibular canine

A

Which anterior tooth has a mesial cusp slope that is more nearly horizontal?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular central incisor

D. Mandibular lateral incisor

E. Mandibular canine

E

Which of the following characteristics is most often true for all incisors and for all canines?

A. The proximal view outlines are wedge shaped.

B. The crowns are wider (in a mesiodistal dimension) than long (in an incisogingival dimension).

C. The incisal ridges are positioned slightly to the facial of the midroot axis line.

D. Facial crests of curvature (heights of contour) are located in the middle third of the crown.

E. The proximal view outlines are wedge shaped, and the crowns are wider (in a mesiodistal dimension) than long (in an incisogingival dimension).

A

Which characteristic is most likely to apply to the maxillary canine but NOT the mandibular canine?

A. The cingulum is off center toward the distal.

B. The incisal edge is more likely to be lingual to the midroot axis line.

C. The mesial outline of the crown and root form almost a straight line.

D. The crowns have prominent lingual ridges and fossae.

E. From the incisal view, the labiolingual dimension is greater than the mesiodistal dimension.

D

When viewed from the incisal, which anterior tooth is relatively wider mesiodistally than faciolingually?

A. Maxillary central incisor

B. Maxillary canine

C. Mandibular canine

D. Mandibular central incisor

E. Mandibular lateral incisor

A

Which of the following roots is, on average, the longest?

A. Root of a maxillary canine

B. Root of a mandibular canine

C. Lingual root of a maxillary first molar

D. Lingual root of a maxillary second molar

E. Mesial root of a mandibular first molar

A

Which of the following normally describes the general crown form of canines when viewed from the facial or lingual aspect?

A. Three sided

B. Four sided

C. Five sided

D. Six sided

E. Seven sided

C

The distal contact area of the maxillary canine is located in the ____ of the crown.

A. incisal third

B. junction of the incisal and middle thirds

C. center of the middle third

D. junction of the middle and cervical thirds

E. cervical third

C

The mesial contact of the crown of the maxillary canine is located in the _____ of the crown.

A. incisal third

B. junction of the incisal and middle thirds

C. center of the middle third

D. junction of the middle and cervical thirds

E. cervical third

B