Maxillary Premolars Quiz Questions With Answers

1. (Maxillary premolar) Mesial is trapezoid.

True

False

Mesial - Trapezoid (true statement)

Explanation

Mesial - Trapezoid (true statement)

2. Which of the following are correct about the Premolars?

6 Total: 4 for each segment.

4th and 5th from the midline

2nd and 3rd premolars

Both A & C

All of the above

Premolars: 8 total with 2 in each quadrant 4th and 5th from the midline 1st and 2nd premolars Misnomer (incorrectly named) as the bicuspid.

Explanation

Premolars: 8 total with 2 in each quadrant 4th and 5th from the midline 1st and 2nd premolars Misnomer (incorrectly named) as the bicuspid.

3. Root completion (maxillary premolars) occurs:

1 - 1 3/4 years

5 - 6 years

10 - 11 years

12 - 13 years

Root completion - 12 - 13 years

Explanation

Root completion - 12 - 13 years

4. Eruption (maxillary premolars) occurs when?

1 - 1 1/2 years

5 - 6 years

6 - 8 years

10 - 11 years

12 - 13 years

The eruption of maxillary premolars typically occurs between the ages of 10 and 11 years. This is a normal developmental milestone in the growth of permanent teeth. During this time, the primary (baby) teeth are being replaced by the permanent teeth, and the maxillary premolars are among the teeth that erupt during this stage. It is important to note that individual variations can occur, and some children may experience the eruption of their maxillary premolars slightly earlier or later than the average age range provided.

Explanation

The eruption of maxillary premolars typically occurs between the ages of 10 and 11 years. This is a normal developmental milestone in the growth of permanent teeth. During this time, the primary (baby) teeth are being replaced by the permanent teeth, and the maxillary premolars are among the teeth that erupt during this stage. It is important to note that individual variations can occur, and some children may experience the eruption of their maxillary premolars slightly earlier or later than the average age range provided.

5. Premolars functions include the following:

Grinding like a small molar

Produce saliva

Tearing and piercing like the canine

Both A and C

None of the above

Premolars - Fxn - grinding like a small molar but tearing, piercing like the canine.

Explanation

Premolars - Fxn - grinding like a small molar but tearing, piercing like the canine.

6. Completion (maxillary premolars) of enamel occurs at:

2 - 4 years

3 - 4 years

4 - 6 years

5 - 6 years

Completion of enamel - 5 - 6 years

Explanation

Completion of enamel - 5 - 6 years

7. The following statement is (True or False): Two maxillary premolars resemble each other, while mandibular do not resemble each other.

True

False

The statement is true. 1) two maxillary premolars resemble each other. 2) mandibular ones do not.

Explanation

The statement is true. 1) two maxillary premolars resemble each other. 2) mandibular ones do not.

8. Succedaneous teeth replace teeth with different names called what?

Primary Canines

Secondary Succednaeous Molars

Primary Premolars

Primary Molars

Succedaneous teeth replace teeth with different names - The Primary Molars

Explanation

Succedaneous teeth replace teeth with different names - The Primary Molars

9. Which of the following is correct about the maxillary premolars?

2nd larger than 1st

1st larger than 2nd

Roots longer the canines

Roots are not as long as canines.

None of the above is correct.

The correct answer is "1st larger than 2nd, Roots are not as long as canines." Maxillary premolars have two teeth, the first premolar and the second premolar. The first premolar is larger than the second premolar. Additionally, the roots of the maxillary premolars are not as long as the canines.

Explanation

The correct answer is "1st larger than 2nd, Roots are not as long as canines." Maxillary premolars have two teeth, the first premolar and the second premolar. The first premolar is larger than the second premolar. Additionally, the roots of the maxillary premolars are not as long as the canines.

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10. Which of the following is correct about Maxillary Premolars?

Maxillary premolars show an inclination to lingual.

Maxillary premolars show an inclination to the tongue.

Mandibular premolars show inclination to lingual

Both A & B

Both B & C

Mandibular premolars show inclination to lingual: maxillary do not.

Explanation

Mandibular premolars show inclination to lingual: maxillary do not.

11. Calcification (maxillary premolars) occurs at what age?

1 - 2 years

1 - 1 1/2 years

1 1/2 years - 1 3/4 years

5 - 6 years

10 - 11 years

Calcification - 1 1/2 - 1 3/4 years

Explanation

Calcification - 1 1/2 - 1 3/4 years

12. Which of the following is/are true about the Premolars form?

Decreased number of cusps

Increased number of cusps compared to canines

Marginal ridges on the occlusal surface

Marginal ridges on the buccal ridge

None of the above

Premolar form - 1) increased number of cusps 2) Marginal ridges on the occlusal surface

Explanation

Premolar form - 1) increased number of cusps 2) Marginal ridges on the occlusal surface

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13. Which of the following is correct?

Maxillary buccal and lingual cusps are about the same size between 1st and second premolar (-2)

Maxillary cusps are dissimilar, and their size is 3

Mandibular cusps are about the same size (-2)

Mandibular respective buccal and lingual cusps are dissimilar, and their size is 3

None of the above

Maxillary 1) Maxillary Cusps about the same size (-2) 2) Mandibular may have size 3 and cusps are dissimilar

Explanation

Maxillary 1) Maxillary Cusps about the same size (-2) 2) Mandibular may have size 3 and cusps are dissimilar

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14. Maxillary 1st roots measurement is:

2

-3

-2

3

0

Maxillary roots are not as long as canine.
Mx 1st -2 Roots

Explanation

Maxillary roots are not as long as canine.
Mx 1st -2 Roots

15. Select the following answers about maxillary premolars that are correct:

Maxillary narrower B-L than M-D

Maxillary wider B-L than M-D

Maxillary have the same B-L and M-D dimensions.

Mandibular have the same B-L and M-D dimensions

Maxillary
1) maxillary wider B-L than M-D
2) mandibular have same B-L and M-D dimensions

Explanation

Maxillary
1) maxillary wider B-L than M-D
2) mandibular have same B-L and M-D dimensions

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16. Maxillary premolar - Lingual - Select the correct statements with respect to the Lingual.

Cervical straight to the apex

No developmental depressions, grooves, or pits

Occl - L cusp not as sharp as B

M-O slope shorter than D-O slope; mm shorter

M-O slope shorter than D-O slope, cm shorter

B, C, and D are correct statements
(A) should read Cervical curved to apex, (E) should read M-O shorter than D-O slope, mm shorter.

Explanation

B, C, and D are correct statements
(A) should read Cervical curved to apex, (E) should read M-O shorter than D-O slope, mm shorter.

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17. Maxillary premolar - Occlusal - Which of the following are incorrect with respect to the Occlusal

Hexagonal; wider B-L

B ridge is not prominent.

L - concave

M and D converge to L; L is narrower than B

Occlusal table boundaries

B and C are the correct answers (B) should read B ridge prominent. and (C) should read L - convex A, D, and E are true statements.

Explanation

B and C are the correct answers (B) should read B ridge prominent. and (C) should read L - convex A, D, and E are true statements.

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18. Maxillary Premolar Roots - Type I - Select the true statements below about Type I roots in maxillary premolars:

Single root

Kidney shaped at mid root cross section due to mesial concavity continuous with the root concavity (longitudinal groove)

Double root

Triangular shaped at mid root cross section due to mesial concavity continuous with the root concavity (longitudinal groove)

In maxillary premolars with Type I roots, the accurate statements are that they typically possess a single root and exhibit a kidney-shaped appearance at the mid-root cross-section due to the presence of a mesial concavity and a continuous root concavity (longitudinal groove), which is more pronounced on the mesial aspect. These characteristics distinguish them from teeth with double roots or triangular shapes at the mid-root cross-section, which are more commonly associated with multi-rooted teeth like molars. Therefore, for Type I roots in maxillary premolars, a single, kidney-shaped root with specific concavities and grooves is the norm.

Explanation

In maxillary premolars with Type I roots, the accurate statements are that they typically possess a single root and exhibit a kidney-shaped appearance at the mid-root cross-section due to the presence of a mesial concavity and a continuous root concavity (longitudinal groove), which is more pronounced on the mesial aspect. These characteristics distinguish them from teeth with double roots or triangular shapes at the mid-root cross-section, which are more commonly associated with multi-rooted teeth like molars. Therefore, for Type I roots in maxillary premolars, a single, kidney-shaped root with specific concavities and grooves is the norm.

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19. Which of the following are true about the Maxillary Premolar:

Includes #5 and #12

Function is grinding

Includes #4 and #11

Function is piercing

None of the above

Maxillary 1st Premolar includes:
#5 and #12
Fxn - Grinding

Explanation

Maxillary 1st Premolar includes:
#5 and #12
Fxn - Grinding

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20. Lingual (maxillary premolar) - Which of the following is correct?

Convex; narrower and smaller at the lingual

L cusp is shorter than B by a good 1 mm, so we can see both; L cusp tip toward M.

Developed depressions with grooves and pits

M and D are shorter and more convex except for the M concavity area.

Cervical curved to the apex

A, B, D, and E are all correct - (C) should read No developmental depressions, grooves, or pits.

Explanation

A, B, D, and E are all correct - (C) should read No developmental depressions, grooves, or pits.

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21. Roots - Type II - which statements are true in regards to Type II roots:

Trifurcated

Bifurcated

B and L branches; root trunk, furcation - round at mid root

Most common

B, C, and D are correct answers. (A) is incorrect: should read bifurcated

Explanation

B, C, and D are correct answers. (A) is incorrect: should read bifurcated

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22. Maxillary premolars - Which of the following are true about the Facial Max premolar?

Crown longer than canine but shorter than 2nd molar

B ridge, developed depressions

Height of Contour

Cervical is less curved than the anterior

Occl - M-O slope longer D-O slope - Cusp tip toward D

B, C, D, and E are all correct - (A) should be Crown shorter than canine but longer than 2nd molar.

Explanation

B, C, D, and E are all correct - (A) should be Crown shorter than canine but longer than 2nd molar.

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23. Maxillary premolar - Transverse Ridge, marginal ridge, fossae - Which of the following are true statements in regards to the "transverse ridge, marginal ridge, and fossae"?

Marginal ridges: M shorter and notched by groove

Fossae: M triangular - boundaries: Transverse ridge, marginal ridge, and m cusp ridges of B and L cusps

Fossae: D triangular

Marginal ridges: M longer and notched by groove

Fossae: D trapezoidal

A, B, and C are correct answers. D and E are incorrect. (D) should read Marginal ridges: M shorter and notched by a groove (E) should read Fossae: D triangular.

Explanation

A, B, and C are correct answers. D and E are incorrect. (D) should read Marginal ridges: M shorter and notched by a groove (E) should read Fossae: D triangular.

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24. The 4th tooth from midline replacing the Mx 1st primary molar is __________?

The term "succedaneous" refers to permanent teeth that replace primary (deciduous) teeth. In this case, the 4th tooth from the midline is replacing the Maxillary (upper) 1st primary molar. Therefore, the correct answer is "Succedaneous."

Explanation

The term "succedaneous" refers to permanent teeth that replace primary (deciduous) teeth. In this case, the 4th tooth from the midline is replacing the Maxillary (upper) 1st primary molar. Therefore, the correct answer is "Succedaneous."

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25. Maxillary Premolars - Pits and Grooves - Which of the following are true statements?

Mesial - ML and MB triangular grooves, central grooves, and M marginal grooves; ends on M surface.

Distal - DB, DL, and Central

Primary/Secondary

Distal - DB, DL, and Lateral

Mesial ML and MB trapezoid grooves, central grooves, and M marginal grooves: ends on M surface

A, B, and C are correct statements. D and E are incorrect (D) should read Distal - DB, DL, and Central (E) should read Mesial ML and MB triangular grooves, central grooves, and M marginal; ends on M surface.

Explanation

A, B, and C are correct statements. D and E are incorrect (D) should read Distal - DB, DL, and Central (E) should read Mesial ML and MB triangular grooves, central grooves, and M marginal; ends on M surface.

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26. Maxillary premolar facial includes which of the following?

M - Concave in cervical; convex in Occlusal

Crown shorter than canine but longer than 2nd premolar

D - shorter like mesial, contact cervical to mesial.

Contact near J of occlusal and middle thirds

Cerv - more curved than anteriors

A, B, C, and D are correct. E - Cerv - is less curved than anterior.

Explanation

A, B, C, and D are correct. E - Cerv - is less curved than anterior.

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27. Maxillary premolar - Occlusal - Which of the following are true statements with respect to the Occlusal:

B cusp: largest, longest, sharpest; tip to DB; Cusp ridges (-4)

Inclined planes - MB and DB non-functional; ML and DL - functional

L cusp to ML; MB, DB, and DL inc planes functional; ML non-functional

B cusp: smallest, shortest, ovoid, tip to DB; Cusp ridges 4

Inclined planes - MB and DB functional; ML and DL - non-functional

In maxillary premolars, the lingual (L) cusp is typically oriented towards the mesiolingual (ML) direction. The inclined planes of the mesiobuccal (MB), distobuccal (DB), and distolingual (DL) cusps are generally functional, while the mesiolingual (ML) inclined plane is non-functional.

Options 1 and 4 contain inaccuracies in describing the buccal (B) cusp. In maxillary premolars, the buccal cusp is usually larger and longer than the lingual cusp. Additionally, the cusp tip is commonly directed toward the buccal (DB) aspect, not the distolingual (DL) aspect.

Option 2 contains inaccuracies regarding the functional and non-functional inclined planes. In maxillary premolars, the mesiobuccal (MB) and distobuccal (DB) inclined planes are typically functional, while the mesiolingual (ML) and distolingual (DL) inclined planes are non-functional.

Explanation

In maxillary premolars, the lingual (L) cusp is typically oriented towards the mesiolingual (ML) direction. The inclined planes of the mesiobuccal (MB), distobuccal (DB), and distolingual (DL) cusps are generally functional, while the mesiolingual (ML) inclined plane is non-functional.

Options 1 and 4 contain inaccuracies in describing the buccal (B) cusp. In maxillary premolars, the buccal cusp is usually larger and longer than the lingual cusp. Additionally, the cusp tip is commonly directed toward the buccal (DB) aspect, not the distolingual (DL) aspect.

Option 2 contains inaccuracies regarding the functional and non-functional inclined planes. In maxillary premolars, the mesiobuccal (MB) and distobuccal (DB) inclined planes are typically functional, while the mesiolingual (ML) and distolingual (DL) inclined planes are non-functional.

28. Maxillary premolar - Mesial - which of the following is incorrect with respect to the Mesial:

B - outline convex

Cervical curve toward occlusal

L - outline concave - the height of contour in mid-third

Occl - marginal ridge notched by L marginal groove

Mesial concavity

C, D are the answers - (C) should read L - outline convex - height of contour in mid-third (D) should read Occl - marginal ridge notched by m marginal groove. A, B, and E are true statements.

Explanation

C, D are the answers - (C) should read L - outline convex - height of contour in mid-third (D) should read Occl - marginal ridge notched by m marginal groove. A, B, and E are true statements.

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29. Maxillary 1st premolar: Occlusal - ______________, Proximal - _____________, Facial - _____________ (variation of __________ learned earlier.

Maxillary 1st premolar is Occlusal - Hexagon,
Proximal - trapezoid
facial - pentagon (variation of trapezoid learned earlier)

Explanation

Maxillary 1st premolar is Occlusal - Hexagon,
Proximal - trapezoid
facial - pentagon (variation of trapezoid learned earlier)

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30. Maxillary premolar - Mesial - Which of the following is correct with respect to the Mesial?

No concavity; it may be straight.

Concavity larger, ovoid B-L; more cervical, to B

Distal-like mesial, shorter, marginal ridge, more cervical, with a marginal groove.

Contact area circular, near the junction of occl and mid-third; to B

Mesial convexity

A, B, and D are correct statements (C) should read Distal like mesial, shorter, marginal ridge more cervical, with NO marginal groove. (E) should read Mesial Concavity

Explanation

A, B, and D are correct statements (C) should read Distal like mesial, shorter, marginal ridge more cervical, with NO marginal groove. (E) should read Mesial Concavity

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