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Deciduous Maxillary First Molar Views

Total questions: 89

Worksheet time: 45mins

Name
Class
Date
1.

In the buccal view of a deciduous maxillary first molar, which feature is most emphasized by the outward flare of the roots?

a)

Single straight conical root form

b)

Short fused palatal root trunk

c)

Flattened distal root surface

d)

Prominent furcation near the cervical area

2.

From the palatal (lingual) view, which root is typically the largest and most prominent in a deciduous maxillary first molar?

a)

All three roots equal in size

b)

Distobuccal root appearing stout

c)

Mesiobuccal root appearing slender

d)

Palatal root showing bulk and length

3.

Which pair correctly matches the view with the surface primarily observed: buccal view shows buccal surface; palatal view shows palatal surface; mesial view shows mesial surface; distal view shows distal surface.

a)

Distal view → mesial surface

b)

Buccal view → buccal surface

c)

Palatal view → palatal surface

d)

Mesial view → distal surface

4.

On the mesial view of a deciduous maxillary first molar, the cervical convexity of the crown is usually more pronounced than on the distal. Which statement best explains its clinical implication?

a)

It indicates a longer distobuccal cusp ridge

b)

Greater prominence affects matrix band adaptation

c)

It reduces contact point height consistently

d)

It necessitates a wider occlusal isthmus routinely

5.

In the distal view, how does the convergence of the crown toward the occlusal surface typically compare with the mesial view in a primary maxillary first molar?

a)

Less taper distally toward occlusal

b)

No taper visible in primary molars

c)

Greater taper distally toward occlusal

d)

Equal taper on both proximal sides

6.

Which view most reliably reveals three separate roots of a deciduous maxillary first molar without overlap?

a)

Buccal view with clear root divergence

b)

Mesial view showing palatal root only

c)

Distal view with fused appearance

d)

Occlusal view showing cuspal outline

7.

Identify the view that best displays the occlusal table morphology, including marginal ridges and fossae, in a primary maxillary first molar.

a)

Mesial view of proximal contour

b)

Palatal view of root dominance

c)

Buccal view of the facial surface

d)

Occlusal view of the crown surface

8.

When orienting the occlusal view, which edges correspond to the buccal and lingual sides for a maxillary molar diagram labeled with B (buccal) and L (lingual)?

a)

B marks the tongue side; L marks labial side

b)

B marks distal side; L marks mesial side

c)

B marks the cheek side; L marks palatal side

d)

B and L both mark proximal contacts

9.

Place the developmental events of the deciduous maxillary first molar in chronological order from earliest to latest.

a)

Calcification initiation, crown completion, eruption, root completion

b)

Crown completion, calcification initiation, eruption, exfoliation

c)

Eruption, calcification initiation, root completion, exfoliation

d)

Root completion, tooth eruption, exfoliation, crown completion

10.

At approximately what age does the deciduous maxillary first molar typically erupt?

a)

16 months

b)

6 months

c)

2.5 years

d)

10 years

11.

Root completion for the deciduous maxillary first molar is typically achieved by (a)   .

12.

Which event occurs in utero for the deciduous maxillary first molar?

a)

Initiation of calcification

b)

Tooth exfoliation

c)

Tooth eruption

d)

Crown completion

13.

Select all milestones that occur after eruption of the deciduous maxillary first molar.

a)

Calcification initiation in utero

b)

Crown completion at 6 months

c)

Exfoliation at 10 years

d)

Root completion at 2.5 years

14.

From the buccal view of a deciduous maxillary first molar, which statement about root visibility is correct?

a)

Only mesial and palatal roots are observable

b)

Only the palatal root is hidden buccally

c)

Only two roots are observable buccally

d)

All three roots are observable buccally

15.

Which root is the longest in the deciduous maxillary first molar?

a)

Mesial root is the longest

b)

Distal root is the longest

c)

Palatal root is the longest

d)

All roots are equal length

16.

Identify the root that is shorter compared with the mesial root in the deciduous maxillary first molar.

a)

Distal root is shorter

b)

Palatal root is shorter

c)

Mesiolingual root is shorter

d)

All roots are shorter

17.

Where does the division of roots typically begin in the deciduous maxillary first molar?

a)

Just below the cementoenamel junction

b)

Near the apices of the three roots

c)

At the mid-root level of mesial root

d)

Well above the cementoenamel junction

18.

From the lingual view, which cusp is most prominent and sharp on the deciduous maxillary first molar?

a)

Mesiobuccal cusp is most prominent

b)

Distolingual cusp is most prominent

c)

Distobuccal cusp is most prominent

d)

Mesiolingual cusp is most prominent

19.

Which lingual cusp tends to be smooth and rounded on the deciduous maxillary first molar?

a)

Distolingual cusp is rounded

b)

Mesiobuccal cusp is rounded

c)

Mesiolingual cusp is rounded

d)

Distobuccal cusp is rounded

20.

Why is the distobuccal cusp visible from the lingual aspect in this tooth?

a)

It is short and underdeveloped

b)

It is long and well developed

c)

The crown tilts buccally

d)

The palatal root obscures it

21.

In a three-cusp type deciduous maxillary first molar, which cusp arrangement is present?

a)

Three buccal cusps and no lingual cusp

b)

One buccal cusp and two lingual cusps

c)

Two buccal cusps and one large lingual cusp

d)

Two lingual cusps and one small buccal cusp

22.

From the lingual aspect, which roots are visible and which is the largest in the deciduous maxillary first molar?

a)

The palatal root is the largest

b)

Mesial, distal, and palatal are visible

c)

Only mesial and distal are visible

d)

Only palatal is visible

23.

Which cusp is longer and sharper on the deciduous maxillary first molar when viewed from the mesial aspect?

a)

Mesiobuccal cusp

b)

Mesiolingual cusp

c)

Distobuccal cusp

d)

Distolingual cusp

24.

From the mesial aspect, which structure connects the mesiolingual cusp with the mesiobuccal cusp?

a)

Mesial marginal ridge

b)

Distal marginal ridge

c)

Oblique ridge

d)

Transverse ridge

25.

Fill in the blank: From the mesial aspect, the tooth shows a pronounced convexity on the (a)   surface at the cervical third of the crown.

26.

Which way does the cervical line curve when the deciduous maxillary first molar is observed from the mesial aspect?

a)

Toward occlusal surface

b)

Toward cervical root

c)

Toward buccal surface

d)

Toward lingual surface

27.

Regarding the lingual root from the mesial aspect, which description is accurate?

a)

Curves distally from midpoint

b)

Remains straight without curvature

c)

Extends buccally then curves lingually

d)

Extends lingually then curves buccally

28.

From the distal aspect, how does crown width compare with the mesial aspect?

a)

Narrower distally

b)

Wider distally

c)

Equal widths

d)

Variable widths

29.

Which cusp description from the distal aspect is correct?

a)

Distolingual long and sharp

b)

Mesiobuccal long and sharp

c)

Mesiolingual shortest and blunt

d)

Distobuccal long and sharp

30.

Why are parts of the mesiobuccal and mesiolingual cusps visible from the distal aspect?

a)

Small distal cusps

b)

Buccal root prominence

c)

Large distal cusps

d)

Overhanging marginal ridge

31.

From the distal aspect, the cervical line runs in what manner from buccal to lingual?

a)

Deep cervical curve

b)

Pronounced distal dip

c)

Deep occlusal curve

d)

Nearly straight line

32.

Which root portion is visible from the distal aspect?

a)

Part of mesiobuccal root

b)

Entire lingual root

c)

No root visible

d)

Entire distobuccal root

33.

From the occlusal view, the crown converges in which two directions?

a)

Toward buccal aspect

b)

Toward mesial aspect

c)

Toward distal aspect

d)

Toward lingual aspect

34.

Which fossae set is present on the occlusal surface?

a)

Central and four marginal pits

b)

Two central fossae only

c)

Two distal triangular fossae

d)

Central and two triangular fossae

35.

Which groove extends between the mesial triangular fossa and the distal triangular fossa?

a)

Central developmental groove

b)

Transverse groove of oblique ridge

c)

Buccal developmental groove

d)

Lingual developmental groove

36.

Compared between marginal ridges, which statement is correct for the occlusal aspect?

a)

Both ridges underdeveloped

b)

Distal marginal ridge thin

c)

Mesial marginal ridge thinner

d)

Both ridges very thick

37.

In the buccal view of the deciduous maxillary second molar shown in the diagram, which feature is best appreciated from this aspect?

a)

Relative prominence of buccal cusps

b)

Depth of palatal root groove

c)

Contour of palatal cusps

d)

Distal marginal ridge height

38.

Which diagram view would most clearly display the palatal roots of the deciduous maxillary second molar?

a)

Buccal aspect illustration

b)

Palatal aspect illustration

c)

Mesial aspect illustration

d)

Distal aspect illustration

39.

Select ALL views that primarily help assess proximal surface morphology of the deciduous maxillary second molar.

a)

Distal view image

b)

Palatal view image

c)

Buccal view image

d)

Mesial view image

40.

From the mesial view diagram of the deciduous maxillary second molar, which orientation is correct for identifying the proximal surface?

a)

Surface toward palatal vault

b)

Surface toward buccal vestibule

c)

Surface facing away from midline

d)

Surface facing the midline

41.

At approximately what age does the deciduous maxillary second molar typically erupt?

a)

23 months of age

b)

18 months of age

c)

29 months of age

d)

34 months of age

42.

The first evidence of calcification for the deciduous maxillary second molar occurs at what time point?

a)

28 weeks in utero

b)

19 weeks in utero

c)

12 weeks in utero

d)

6 weeks postnatal

43.

Fill in the blank: Completion of enamel for the deciduous maxillary second molar occurs at (a)   .

44.

Which of the following events is expected around 3 years for the deciduous maxillary second molar?

a)

Initial calcification

b)

Physiologic exfoliation

c)

Root completion

d)

Tooth eruption

45.

Select ALL statements that are accurate for the deciduous maxillary second molar timeline.

a)

Calcification begins at 19 weeks in utero

b)

Enamel completes by 11 months of age

c)

Typical eruption occurs at 29 months

d)

Exfoliation occurs at 5–6 years

46.

The deciduous maxillary second molar is ultimately replaced by which permanent tooth?

a)

Maxillary second premolar

b)

Maxillary first premolar

c)

Maxillary canine

d)

Maxillary first molar

47.

In a routine exam, an 11-year-old presents with mobility of the maxillary second primary molar. Which stage best explains this finding?

a)

Early root development stage

b)

Physiologic exfoliation window

c)

Post-eruptive maturation stage

d)

Active enamel formation stage

48.

Which pair forms the two well-developed buccal cusps of the deciduous maxillary second molar?

a)

Mesiopalatal and distopalatal cusps

b)

Mesiolingual and distolingual cusps

c)

Mesial and distal marginal ridges

d)

Mesiobuccal and distobuccal cusps

49.

Between the two buccal cusps of a deciduous maxillary second molar, a shallow (a)   is typically present.

50.

How many roots are present in the deciduous maxillary second molar when viewed from the buccal aspect?

a)

One fused root

b)

Three distinct roots

c)

Two separate roots

d)

Four slender roots

51.

Select all names that correctly identify the roots of the deciduous maxillary second molar.

a)

Buccal root

b)

Distal root

c)

Palatal root

d)

Mesial root

52.

Where is the point of division (furcation) relative to the cemento-enamel junction in the deciduous maxillary second molar?

a)

Close to the CEJ

b)

Midway to the apex

c)

At the apical third

d)

Exactly at the apex

53.

Compared with the deciduous maxillary first molar, the roots of the deciduous maxillary second molar appear:

a)

Wider, shorter, lighter

b)

Thicker, shorter, heavier

c)

Slender, longer, heavier

d)

Shorter, broader, lighter

54.

Identify the mislabeled statement about the buccal aspect of the deciduous maxillary second molar.

a)

A shallow groove separates buccal cusps

b)

Furcation is far from the CEJ

c)

Buccal cusps are equal in development

d)

Crown is larger than the first molar crown

55.

Which cusps are visible from the lingual aspect of a deciduous maxillary second molar?

a)

Mesiobuccal, distobuccal, and palatal

b)

Distolingual, distobuccal, and palatal

c)

Mesiolingual, distolingual, and supplementary

d)

Mesiolingual, mesiobuccal, and palatal

56.

The supplementary cusp seen lingually on the deciduous maxillary second molar is also called the (a)   .

57.

From the mesial aspect, how many cusps are typically visible on the deciduous maxillary second molar?

a)

Two cusps are visible mesially

b)

Three cusps are visible mesially

c)

Five cusps are visible mesially

d)

Four cusps are visible mesially

58.

Which structures are connected by the mesial marginal ridge when viewed from the mesial aspect?

a)

Mesiobuccal cusp and mesiolingual cusp

b)

Distobuccal cusp and distolingual cusp

c)

Mesiolingual cusp and distolingual cusp

d)

Mesiobuccal cusp and distobuccal cusp

59.

What feature contributes to the molar-like appearance of the deciduous maxillary second molar crown when viewed mesially?

a)

Greater buccolingual dimensions with long roots

b)

Greater mesiodistal width with short roots

c)

Narrow palatal surface with fused roots

d)

Flattened buccal surface with thin roots

60.

From the distal aspect, which cusps are described as small and equal in size on the deciduous maxillary second molar?

a)

Mesiobuccal and distobuccal cusps

b)

Distobuccal and distolingual cusps

c)

Mesiolingual and distolingual cusps

d)

Mesiobuccal and mesiolingual cusps

61.

Which statement about the cervical line from the distal aspect is accurate?

a)

It is markedly convex occlusally

b)

It is nearly straight distally

c)

It dips apically at the center

d)

It shows strong mesial curvature

62.

Why are all three roots visible from the distal aspect of the deciduous maxillary second molar?

a)

The mesial root curves distally

b)

The palatal root is the shortest

c)

The distal root has smaller dimensions

d)

The distal root is very divergent

63.

How many major cusps are seen on the occlusal surface of the deciduous maxillary second molar?

a)

Two major cusps only

b)

Five major cusps present

c)

Three major cusps total

d)

Four major cusps present

64.

Name the four major cusps on the occlusal surface of the deciduous maxillary second molar.

a)

Mesiobuccal cusp

b)

Cusp of Carabelli

c)

Mesiolingual cusp

d)

Distolingual cusp

e)

Distobuccal cusp

65.

Which fossa is the largest on the occlusal surface and contains the central pit?

a)

Mesial fossae are the largest

b)

Distal fossae are the largest

c)

Central fossa is the largest

d)

Triangular fossae are largest

66.

Where are the mesial and distal triangular fossae located relative to the marginal ridges?

a)

Centered within the central fossa

b)

Crossing the oblique ridge midway

c)

Far from the respective marginal ridges

d)

Adjacent to the respective marginal ridges

67.

Which groove crosses the occlusal surface as a prominent developmental feature?

a)

Central developmental groove

b)

Cervical developmental groove

c)

Transverse marginal groove

d)

Palatal supplemental groove

68.

The buccal and lingual developmental grooves serve primarily as what?

a)

Boundaries of the marginal ridge

b)

Origins of the oblique ridge

c)

Entrances to root canals

d)

Demarcations between cusp pairs

69.

Supplementary grooves on the occlusal surface most often originate from which structure?

a)

Oblique ridge crest

b)

Main developmental groove

c)

Triangular fossae margins

d)

Central pit opening

70.

Which cusps are connected by the prominent oblique ridge on the deciduous maxillary second molar?

a)

Mesiolingual cusp with distobuccal

b)

Mesiolingual cusp with mesiobuccal

c)

Mesiobuccal cusp with distolingual

d)

Mesiobuccal cusp with distobuccal

71.

Identify the view that best shows two separate roots diverging toward the buccal and lingual aspects in a deciduous mandibular first molar.

a)

Lingual view of the tooth

b)

Buccal view of the tooth

c)

Mesial view of the tooth

d)

Distal view of the tooth

72.

Which view would most directly display the height of contour on the lingual surface of a deciduous mandibular first molar crown?

a)

Mesial aspect visualization

b)

Distal aspect visualization

c)

Lingual aspect visualization

d)

Buccal aspect visualization

73.

Select ALL views that primarily show a single broad root trunk tapering cervically rather than clearly separated roots in the deciduous mandibular first molar diagrams.

a)

Buccal surface perspective

b)

Lingual surface perspective

c)

Distal surface perspective

d)

Mesial surface perspective

74.

From the diagrams, which view is most suitable to compare relative cusp prominence on the occlusal outline silhouette of a deciduous mandibular first molar?

a)

Lingual view profile

b)

Distal view profile

c)

Buccal view profile

d)

Mesial view profile

75.

At what age does the deciduous mandibular first molar typically erupt?

a)

24 months of age

b)

36 months of age

c)

16 months of age

d)

12 months of age

76.

Beginning of calcification for the deciduous mandibular first molar occurs at (a)   .

77.

Which developmental event is expected around 5.5 months after birth for the deciduous mandibular first molar?

a)

Tooth eruption completes

b)

Crown formation completes

c)

Root formation begins

d)

Exfoliation commences

78.

Select all correct statements about the deciduous mandibular first molar timeline.

a)

Calcification begins postnatally at 15.5 weeks

b)

Exfoliation typically at 6–7 years

c)

Eruption occurs at about 16 months

d)

Root completion occurs by about 2.5 years

79.

The deciduous mandibular first molar is replaced by which tooth, and at approximately what age?

a)

Mandibular first premolar at 10–11 years

b)

Mandibular second premolar at 8–9 years

c)

Mandibular canine at 11–12 years

d)

Mandibular first molar at 6–7 years

80.

Place the following events for the deciduous mandibular first molar in correct chronological order: calcification begins, crown completion, eruption, root completion.

a)

Crown completion, calcification, eruption, root completion

b)

Eruption, crown completion, calcification, root completion

c)

Calcification, eruption, crown completion, root completion

d)

Calcification, crown completion, eruption, root completion

81.

Which statement best characterizes the mesial outline of the crown from the buccal aspect of a deciduous mandibular first molar?

a)

Strongly convex along the mesial outline

b)

Almost straight along the mesial outline

c)

Irregular with pronounced notches

d)

Concave from contact to cervical

82.

From the buccal aspect, how does the distal part of the crown height compare with the mesial part?

a)

Distal height varies widely

b)

Both parts are equal

c)

Distal part height is less

d)

Distal part height is greater

83.

Identify the two cusps present on the buccal aspect of a deciduous mandibular first molar.

a)

Distolingual cusp

b)

Mesiolingual cusp

c)

Distobuccal cusp

d)

Mesiobuccal cusp

84.

Which comparison between the buccal cusps is accurate?

a)

Mesiobuccal is lower and narrower

b)

Mesiobuccal is wider and higher

c)

Distobuccal is wider and higher

d)

Both are equal in dimensions

85.

Name the shallow groove located between the two buccal cusps of the deciduous mandibular first molar.

(a)  

86.

How many roots are typically present, and what are they called, in the deciduous mandibular first molar?

a)

Four roots, widely divergent

b)

Single root, conical and stout

c)

Three roots, two buccal one lingual

d)

Two roots, mesial and distal

87.

Which statement regarding root morphology in deciduous molars is correct?

a)

Root trunk large, roots widely flared

b)

Root trunk absent, roots fused together

c)

Root trunk is large, roots short and thick

d)

Root trunk is small, roots long and slender

88.

From the lingual aspect, what is the general convergence pattern of the crown and roots?

a)

They converge toward the lingual

b)

They diverge toward the lingual

c)

They flare toward the buccal

d)

They remain parallel lingually

89.

Select the correct descriptions of the lingual cusps of the deciduous mandibular first molar.

a)

Mesiolingual cusp long and sharp

b)

Distolingual cusp short and round

c)

Both lingual cusps equal in size

d)

Only one lingual cusp present