Quizlet Qs (Ver. 4) Ch. 3 & 4 Anatomy

A transverse ridge is made up of which two ridges?

Two triangular ridges

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

Which characteristic can be used to distinguish the maxillary canine from the mandibular canine?
-The maxillary canine has a less prominent cingulum (Smoother lingual surface)
-The mesial side of the maxillary canine crown and root form a relatively straight line
-the maxillary canine is shorter than the mandibular canine
-the cusp of the maxillary canine is more pointed

The cusp of the maxillary canine is more pointed

19. 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

Like the incisors, when viewing a canine from the proximal view, what shape is the crown outline?

Triangular shaped

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

The proximal view outlines are triangular shaped.

Which teeth are known as the "cornerstones" of the arch?

canines

On the canine, teeth, where is the facial/labial height of contour ( like all teeth)?

in the cervical third

7. 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

All anterior teeth and two-cusped premolars form from how many lobes?

Four

If a mandibular second premolar has three cusps, they are called mesiolingual, distolingual, and:

Buccal

Which premolar has a pronounced concavity (fossa) on the cervical part of mesial surface of the crown?

Maxillary first premolar

The mandibular second premolar often exhibits a linear depression (groove) extending lingually from the central pit, separating the two lingual cusps. This linear depression (groove) is known as the _____________.

Lingual groove

When compared to other premolars, which of the following characteristics is unique to a mandibular first premolar?

There is likely to be a mesiolingual groove crossing onto the mesiolingual surface.

Which of the following characteristics is NOT true about a maxillary first premolar?

It can have one or two lingual cusps.

Which of the following teeth is most likely to have a large buccal cusp and a much smaller non-functional lingual cusp?

Mandibular first premolar

The premolar with the root most commonly bifurcated is the:

Maxillary first premolar

Both maxillary and mandibular canines are more rounded on the distal surface. Their distal contact area is in the incisal third.

The first statement is true; the second statement is false.

As a rule, the mandibular first premolars are always smaller than the mandibular second premolars. The most striking identifying feature of the mandibular first premolar is the mesiolingual developmental groove.

Both statements are true.

Which type of cusp pattern does the letter "Y" represent on the mandibular second premolar (how many total cusps)?

3

Which selection best describes the roots of the maxillary first premolar?

Two roots, one mesial and one distal

Which premolar typically has a "snake-eye" pit on either side of a strong occlusal transverse ridge?

Mandibular first premolar

Which characteristic applies to ALL types of premolars?

All have the buccal crest of curvature more cervical than the lingual crest of curvature.

What is the International (FDI) tooth name for the Mandibular left second premolar?

35

15. 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

Like the incisor teeth, the canines develop from how many lobes?

four

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

24. Which of the following teeth is most likely to have mamelons?
A. Maxillary central incisor
B. Maxillary canine
C. Mandibular canine
D. All of these choices are correct.
E. None of these choices is correct.

A

Ridges that form the mesial and distal borders on the lingual surface of anterior teeth and the occlusal surface of posterior teeth:

Marginal ridges

When viewed from the proximal, what is the location of the height of contour (widest area) on the facial surface of all teeth?

cervical third (closer to CEJ)

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

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

6. 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

8. 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

9. 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

11. 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

12. 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

13. 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

16. 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

17. 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

18. 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

20. 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

21. 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

23. Where is the mesial contact of the permanent mandibular canine located?
A. Incisal third
B. Center of the middle third
C. Cervical third
D. Junction of the incisal and middle thirds
E. Junction of the middle and cervical thirds

A

12. 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

27. On an unworn permanent canine (maxillary or mandibular), the distal cusp ridge is slightly —than the mesial cusp ridge.

B

28. A depression found on the lingual surface of a canine bounded by the lingual ridge, distal cusp ridge, distal marginal ridge, and distal third of the cingulum is called a—-

distolingual fossa

29. True or false? A distinguishing characteristic of mandibular canines is the relatively straight line of the mesial outline, compared to the distal outline.

False

30. True or false? The mandibular canine occasionally has a bifurcated root.

False

31. True or false? The cingulum of the maxillary canine is larger than the cingulum of the mandibular canine on teeth within the same dentition.

False

32. True or false? Maxillary canine roots are generally longer than lateral incisor roots and shorter than central incisor roots in the same dentition.

False

33. True or false? Maxillary and mandibular canines have relatively broad roots faciolingually and narrower roots mesiodistally, often with proximal root grooves or depressions.

False

34. True or false? The anterior tooth most likely to have two roots is the mandibular canine.

False

35. True or false? On the permanent maxillary canine, the mesial cusp slope is longer than the distal cusp slope.

False

36. True or false? The mesial outline of the crown of the mandibular canine is nearly straight with the mesial outline of the root.

False

All anterior teeth and two-cusped premolars form from how many lobes?

Four

A Y-shaped occlusal groove pattern is characteristic of a

Mandibular second premolar 3 cusp type

Like the incisor teeth, the canines develop from how many lobes?
Group of answer choices

four

At approximately what age does the permanent maxillary canine tooth erupt?

11-12 years

Which tooth replaces the primary mandibular right first molar (tooth "S")?

Tooth #28

Where are the two roots of maxillary first premolars?

buccal and lingual

What part of the mandibular first premolar is referred to as non-functioning?

Lingual cusp

Which of the following are anatomic features of permanent maxillary central incisors? (Choose all that apply.)

1. cingulum

2. Mamelons

3. Marginal ridges

4. Occlusal surface

1, 2, and 3

Though smaller than the maxillary incisors, mandibular incisors also have _____ lobes

four

When viewed from the proximal (from mesial or distal), what shape is the incisor crown?

Triangular

The mesial contact of the mandibular lateral incisor is closest to the incisal edge than the distal contact

True

Which incisors have more prominent lingual anatomy, maxillary incisors or mandibular incisors?

maxillary incisors

Which of the following is a unique characteristic of the maxillary lateral incisor?

-Deep lingual fossa

-more common to have a lingual pit

- prone to decay

-most likely to have a deep root groove on the lingual side

-all of the above

all of the above

Which of the following is true about incisor roots?
-roots taper form cervical to apex
-incisor roots tend to bend toward the distal
-incisor roots are longer than their crowns

all of the above

What shape are incisor crowns when viewed from the labial/facial

rectangle

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

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

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

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

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

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

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

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

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

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
А. 1, 2, 3, 6
В. 1, 2, 4, 5
С. 1,4, 6
D. 2, 3, 6

B

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

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

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

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

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

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.

False

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

False

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

distal root

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

Four (4)

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

Twelve (12)

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

Three

All incisors have a mesioincisal (mesial) angle more square and the distoincisal (distal) angle more rounded. Which type is the EXCEPTION?

Mandibular central incisor

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

True

Which incisors have more prominent lingual anatomy, maxillary incisors or mandibular incisors?

maxillary inciso