Quizlet Ver. 1 Combine Midterms (Ch. 1-5)

Which secondary (adult) tooth has the mesial cusp ridge of its buccal cusp longer than the distal cusp ridge?

A. Maxillary first premolar

B. Maxillary second premolar

C. Maxillary canine

D. Mandibular first premolar  

E. Mandibular second premolar

A

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

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

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 mésial cusp ridge

E. Two triangular ridges

E

Which secondary (adult) tooth has the mesial cusp ridge of its buccal cusp longer than the distal cusp ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Maxillary canine
D. Mandibular first premolar
E. Mandibular second premolar

A

Which two types of permanent teeth are most likely to be wider mesiodistally in the lingual half versus in the facial half (that is, taper narrower from lingual toward facial)?
A. Maxillary first premolars and maxillary first molars
B. Maxillary second premolars and.mandibular second molars (three-cusp type)
C. Mandibular first premolars and maxillary second molars
D. Mandibular second premolars (three-cusp type) and maxillary first molars
E. Maxillary second premolars and maxillary second molars (four-cusp type)

D

Which permanent tooth outline may be thought of as diamond shaped when viewed from the occlusal, with its mesiolingual "corner" or line angle flattened (or pushed in)?
A. Mandibular first premolar
B. Mandibular second premolar
C. Maxillary first molar (without the cusp of Carabelli)
D. Maxillary second molar
E. Maxillary second molar if you include the cusp of Carabelli

A

Which two types of permanent teeth are most likely to be wider mesiodistally in the lingual half versus in the facial half (that is, taper narrower from lingual toward facial)?
A. Maxillary first premolars and maxillary first molars
B. Maxillary second premolars and mandibular second molars (three-cusp type)
C. Mandibular first premolars and maxillary second molars
D. Mandibular second premolars (three-cusp type) and maxillary first molars
E. Maxillary second premolars and maxillary second molars (four-cusp type)

D

Which permanent tooth outline may be thought of as diamond shaped when viewed from the occlusal, with its mesiolingual "corner" or line angle flattened (or pushed in)?
A. Mandibular first premolar
B. Mandibular second premolar
C. Maxillary first molar (without the cusp of Carabelli)
D. Maxillary second molar
E. Maxillary second molar if you include the cusp of Carabelli

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 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 posterior tooth is MOST likely to have a mesial longitudinal root depression more prominent than the distal root depression?
A. Mandibular second premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Maxillary first premolar

D

Which of the following permanent teeth has a mesial marginal ridge more cervical than the distal marginal ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
E. Maxillary canine

C

Which permanent posterior tooth is LEAST likely to have a longitudinal root depression on both the mesial and distal surfaces?
A. Mandibular second premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Maxillary first premolar
E. Mandibular first molar; mesial root

A

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

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

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 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 posterior tooth is MOST likely to have a mesial longitudinal root depression more prominent than the distal root depression?
A. Mandibular second premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Maxillary first premolar

D

Which of the following permanent teeth has a mesial marginal ridge more cervical than the distal marginal ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
E. Maxillary canine

C

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

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

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

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

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

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

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

When viewing the occlusal or incisal surfaces, which of the following permanent teeth is most likely to have a mesiodistal measurement greater in the lingual half than in the facial half?
A. Maxillary canine
B. Maxillary first molar
C. Mandibular first molar
D. Maxillary first premolar
E. Mandibular first premolar

B

When viewing the occlusal or incisal surfaces, which of the following permanent teeth is most likely to have a mesiodistal measurement greater in the lingual half than in the facial half?
A. Maxillary canine
B. Maxillary first molar
C. Mandibular first molar
D. Maxillary first premolar
E. Mandibular first premolar

B

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

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

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

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 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

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

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

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

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

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

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
В. Тwo
C. Three
D. Four
E. Five

C

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

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

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

Which incisor is normally the narrowest (mesiodistally)?
A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

C

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

Which incisor is considered the most symmetrical?
A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

C

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

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 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 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

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

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

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

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 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

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

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

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

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

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

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

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 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 trait can be used to describe all canines and all 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 curvature.

D

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 trait can be used to describe all canines and all 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 curvature.

D

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

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

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

When compared to other premolars, which of the following characteristics is unique to a mandibular first premolar?
A. The root is often bifurcated.
B. The distal cusp ridge is shorter than the mesial cusp ridge.
C. The lingual cusp is almost the same height as the facial cusp.
D. There is likely to be a mesiolingual groove crossing onto the mesiolingual surface.
E. The occlusal groove pattern is shaped like a "Y."

D

When compared to other premolars, which of the following characteristics is unique to a mandibular first premolar?
A. The root is often bifurcated.
B. The distal cusp ridge is shorter than the mesial cusp ridge.
C. The lingual cusp is almost the same height as the facial cusp.
D. There is likely to be a mesiolingual groove crossing onto the mesiolingual surface.
E. The occlusal groove pattern is shaped like a "Y."

D

Which of the following traits does NOT apply to the maxillary first premolar?
A. It usually has a mesial marginal ridge groove.
B. It has a mesial crown depression.
C. It has a greater cervical line curvature on the mesial than on the distal.
D. The lingual cusp tip is positioned or "bent" toward the mesial.
E. The mesial proximal contact is located more ceryically than is the distal proximal contact.

E

Which of the following characteristics is NOT true about a maxillary first premolar? A. The crown has a mesial concavity.
B. The mesial marginal ridge has a mesial marginal groove.
C. The root is often bifurcated.
D. The lingual cusp has little function because it is so short.
E. The crown is most likely to have two cusps.

D

Which characteristic applies to ALL types of premolars?
A. All have two cusps.
B. All have a buccal cusp with the mesial cusp ridge shorter than the distal cusp ridge.
C. All have the mesial proximal contact area located more occlusally than the distal contact area.
D. All have only two occlusal pits (mesial and distal).
E. All have the buccal crest of curvature more cervical than the lingual crest of curvature.

E

Which of the following traits does NOT apply to the maxillary first premolar?
A. It usually has a mesial marginal ridge groove.
B. It has a mesial crown depression.
C. It has a greater cervical line curvature on the mesial than on the distal.
D. The lingual cusp tip is positioned or "bent" toward the mesial.
E. The mesial proximal contact is located more cervically than is the distal proximal contact.

E

Which of the following characteristics is NOT true about a maxillary first premolar?
A. The crown has a mesial concavity.
B. The mesial marginal ridge has a mesial marginal groove.
C. The root is often bifurcated.
D. The lingual cusp has little function because it is so short.
E. The crown is most likely to have two cusps.

D

. Which characteristic applies to ALL types of premolars?
A. All have two cusps.
B. All have a buccal cusp with the mesial cusp ridge shorter than the distal cusp ridge.
C. All have the mesial proximal contact area located more occlusally than the distal contact area.
D. All have only two occlusal pits (mesial and distal).
E. All have the buccal crest of curvature more cervical than the lingual crest of curvature.

E

but without a distinct central groove (so carious pits are often restored separately)? 14. Which type of premolar is most likely to have separate mesial and distal pits with a pronounced transverse ridge
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar (two-cusp type)
E. Mandibular second premolar (three-cusp type)

C

When holding an extracted maxillary and mandibular premolar from the same mouth, which trait (if any) can be used to distinguish the maxillary premolar from the mandibular premolar?
B. Maxillary premolars have relatively short, sometimes functionless, lingual cusps.
A. The occlusal outlines of maxillary premolars are more obviously wider faciolingually than mesiodistally.
C. Maxillary premolars tip considerably toward the lingual relative to the long axis of the root.
D. Maxillary premolars are most likely to have lingual or mesiolingual grooves.
E. None of these traits can be used to distinguish maxillary from mandibular premolars.

A

Which ridge does NOT help form the perimeter (outline) of the occlusal surface (table) of a two-cusped premolar?
A. Mesial marginal ridge
B. Distal marginal ridge
C. Mesial cusp ridge of the buccal cusp D. Distal cusp ridge of the lingual cusp
E. Triangular ridge of the buccal cusp

E

Which type of premolar is most likely to have separate mesial and distal pits with a pronounced transverse ridge but without a distinct central groove (so carious pits are often restored separately)?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar (two-cusp type)
E. Mandibular second premolar (three-cusp type)

C

When holding an extracted maxillary and mandibular premolar from the same mouth, which trait (if any) can be used to distinguish the maxillary premolar from the mandibular premolar?
A. The occlusal outlines of maxillary premolars are more obviously wider faciolingually than mesiodistally.
B. Maxillary premolars have relatively short, sometimes functionless, lingual cusps.
C. Maxillary premolars tip considerably toward the lingual relative to the long axis of the root.
D. Maxillary premolars are most likely to have lingual or mesiolingual grooves.
E. None of these traits can be used to distinguish maxillary from mandibular premolars.

A

Which ridge does NOT help form the perimeter (outline) of the occlusal surface (table) of a two-cusped premolar?
A. Mesial marginal ridge
B. Distal marginal ridge
C. Mesial cusp ridge of the buccal cusp
D. Distal cusp ridge of the lingual cusp
E. Triangular ridge of the buccal cusp

E

Which four ridges join at the facial cusp tip of premolars?
A. Mesial cusp ridge, distal cusp ridge, lingual, and buccal
B. Mesial marginal ridge, distal marginal ridge, lingual, and buccal
C. Mesial cusp ridge, distal cusp ridge, triangular, and buccal
D. Mesial cusp ridge, distal cusp ridge, triangular, and cervical

C

On the maxillary first premolar, the mesial marginal ridge is interrupted just lingual to its midpoint by the ———,which crosses the marginal ridge from the occlusal surface forming a distinct notch. A. Buccal groove
B. Central groove
C. Lingual groove
D. Mesiolingual groove
E. Mesial marginal developmental groove

E

Which four ridges join at the facial cusp tip of premolars?
A. Mesial cusp ridge, distal cusp ridge, lingual, and buccal
B. Mesial marginal ridge, distal marginal ridge, lingual, and buccal
C. Mesial cusp ridge, distal cusp ridge, triangular, and buccal
D. Mesial cusp ridge, distal cusp ridge, triangular, and cervical

C

On the maxillary first premolar, the mesial marginal ridge is interrupted just lingual to its midpoint by the _________, which crosses the marginal ridge from the occlusal surface forming a distinct notch.
A. Buccal groove
B. Central groove
C. Lingual groove
D. Mesiolingual groove
E. Mesial marginal developmental groove

E

When the maxillary first premolar has more than one root, which description applies?
A. There are most often two roots: a mesial and a distal.
B. There are most often two roots: a facial and a lingual.
C. There are most often three roots: one facial and two lingual.
D. There are most often three roots: two facial and one lingual.

B

Which premolar (if any) normally has the mesial cusp ridge of its buccal cusp longer than the distal cusp ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
E. No premolar normally has this trait.

A

When the maxillary first premolar has more than one root, which description applies?
A. There are most often two roots: a mesial and a distal.
B. There are most often two roots: a facial and a lingual.
C. There are most often three roots: one facial and two lingual.
D. There are most often three roots: two facial and one lingual.

B

Which premolar (if any) normally has the mesial cusp ridge of its buccal cusp longer than the distal cusp ridge?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
E. No premolar normally has this trait.

A

Which trait applies to all premolars and all anterior teeth?
A. Have one root
B. Have the cervical line more curved (toward the incisal) on the distal than on the mesial
C. Are formed from four lobes
D. Have two marginal ridges
E. Have a deeper root depression on the mesial of the root

D

Which premolar is likely to be wider mesiodistally in the lingual half versus in the facial half (that is, taper narrower from lingual to facial)?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar (two-cusp type)
E. Mandibular second premolar (three-cusp type)

E

Which premolars (if any) are most likely to have the lingual cusp much shorter than the buccal cusp, and have a mesiolingual groove?
A. Maxillary first premolar only
B. Mandibular first premolar only
C. Mandibular second premolar only
D. Both maxillary first and second premolars
E. No premolar has both of these characteristics.

B

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

Which trait applies to all premolars and all anterior teeth?
A. Have one root
B. Have the cervical line more curved (toward the incisal) on the distal than on the mesial
C. Are formed from four lobes
D. Have two marginal ridges
E. Have a deeper root depression on the mesial of the root

D

Which premolar is likely to be wider mesiodistally in the lingual half versus in the facial half (that is, taper narrower from lingual to facial)?
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar (two-cusp type)
E. Mandibular second premolar (three-cusp type)

E