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Dental anatomy > Primary dentition 1: Maxillary teeth > Flashcards

Primary dentition 1: Maxillary teeth Flashcards

1
Q

What are some facts about deciduous dentition?

A

1) whiter and more opaque than permanent dentition,
2) Thicker enamel at Cervical that abruptly ends at CEJ
3) Very obvious CEJ
4) Prominent buccal ridges (Cervical)
5) MB bulges are very pronounced on maxillary and mandibular first molars.
6) Relatively larger pulp cavities, pulp chambers and horns, and canals.

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2
Q

What are some more facts about deciduous dentition?

A

7) Short crown height relative to length of roots
8) relatively long thin roots that are very divergent
9) little or no root trunks on molars
10) narrow molar occlusal table and unlike permanent teeth; the first molar is smaller than the second molar.

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3
Q

How are the enamel rods directed in deciduous teeth? and are they the same or opposite to permanent teeth?

A

-Enamel rods at cervical area are directed occlusally and its the opposite of permanent teeth. But in the middle and incisal thirds, the rods direction is upwards towards the occlusal or incisal portion.

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4
Q

Do Deciduous incisors have mamelons when they first erupt?

A

NOPE.

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5
Q

For the deciduous maxillary central incisor; what is more rounded, DI or MI angle? does the facial surface have developmental depression?

A
  • DI angle is more rounded than MI

- Facial surface is smooth and rarely have developmental depressions

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6
Q

(Lingual side) What are features more prominent in deciduous central incisors than permanent? Cingulum? Marginal ridges? Fossa?

A
  • Cingulum is more prominent in D teeth
  • Cingulum extends further incisally
  • Marginal Ridges are more prominent and fossa is deeper
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7
Q

(Proximal side) what are some features of D. Central Incsiors? faciolingual width? CEJ curve? Cervical third? Apical third of root?

A
  • Wide Faciolingially
  • CEJ is less curved incisally
  • Slight lingual bend of root at cervical third.
  • Apical third of root is bent facially
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8
Q

What are the features of the roots of D. Central Incisors? Shape of root and length>

A
  • The root is round

- relative to the crown length; D Central incisors have longer roots than permanent Central incisors.

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9
Q

Where can you find the mesial contact of D.Central Incisor? Distal contact?

A
  • Mesial contact; junction of middle and incisal third

- Distal contact; Middle third

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10
Q

(Incisal view) how straight is the incisal edge? MD vs FL dimensions? Location of cingulum?

A
  • Incisal edge is almost straight
  • The MD dimension greater than FL dimension
  • The cingulum is centered from incisal view.
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11
Q

How are D. lateral incisors and D.Central incisors similar? How are they different?

A
  • Shape is similar to central incisors but everything is smaller and less prominent.
  • Both angles more rounded but DI is still much more rounded than MI
  • its Mesiodistally smaller than D Central incisor
  • Roots are longer comparing to the crowns.
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12
Q

from the facial view; whats larger; IG or MD?

A

IG> MD

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13
Q

What is the mesial contact of the D lateral incisor? Distal contact?

A

Mesial contact: Junction of middle and incisal

Distal contact: junction of middle third and incisal as well

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14
Q

From the incisal view of deciduous lateral incisor is MD greater than FL?

A

yes MD> FL

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15
Q

(Facial view) Deciduous canines; What is more prominent Mesial or distal outlines? MCR larger or DCR?

A
  • Mesial is more prominent

- MCR> DCR

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16
Q

What is the shape of the Deciduous canine? Which way is the cusp offset towards?

A

-Pentagon shape crown
-MCR is larger than DCR
Prominent mesial convexity
-The cusp is offset to the Distal side

17
Q

(Lingual view) Deciduous maxillary canine; Cingulum prominence? marginal ridges?

A

Both Cingulum and marginal ridges are more prominent

-Lingual is also pentagon shaped

18
Q

Where is the mesial contact of deciduous maxillary canine? Distal contact? apical of the root

A
  • Contact is more to the gingival

- Distal contact is more incisal than middle

19
Q

From an incisal view of D Maxillary Canines; is FL larger than MD? Which side is the cusp offset to?

A
  • Yes FL> MD

- The cusp is offset to the distal

20
Q

How do the roots of maxillary Deciduous canines compare to permanent?

A

-Same but longer in comparison to crowns.

21
Q

Deciduous maxillary first molar; How does the crown compare to permanent teeth?

A
  • Crown resembles permanent maxillary first premolar; has roots of a molar
  • BL is the greatest dimension
  • MB and ML are the only prominent cusps
  • The 2 D cusps are diminished in size.
22
Q

Buccal View; Maxillary Deciduous 1st molar; CEJ location? Cervical ridge prominance?

A
  • CEJ closer gingivally on mesial half than Distal half

- Cervical ridge is more prominent

23
Q

(Lingual view) Maxillary Deciduous 1st molar; MD dimension? the shape of cervical line?

A

MD dimension is narrower than seen in buccal view

-Cervical line is more even

24
Q

(Mesial view) Maxillary Deciduous 1st molar; Cervical width? Buccal shape? Lingual outline?

A
  • Much wider in the cervical area due to prominent buccal ridge
  • Buccal is straight or concave
  • Lingual outline is convex
25
Q

(Occlusal table) ; Maxillary Deciduous 1st molar; how does it look like? How many cusps and what are their dimensions?

A
  • H Pattern for occlusal grooves
  • 4 cups;
  • ML bulkiest and longes
  • MB second largest
  • DB 3rd largest
  • DL is smallest and may be absent
26
Q

(Occlusal table) Maxillary Deciduous 1st molar; what is the location of the transverse ridge? Oblique ridge? Fossae? Pits and grooves?

A
  • Transverse ridge MB cusp and ML cusp
  • Oblique Ridge ML cusp to DB cusp
  • 3 fossae; Central, mesial and distal
  • Pits and grooves;
  • -M,D and central pits
  • -Buccal groove, Distobuccal groove and central
27
Q

(Roots) Maxillary Deciduous 1st molar;

A
  • Little root trunk
  • Root branches are slender and have more flare
  • L root is largest> MB> DB
28
Q

Deciduous maxillary second molar; resembles what permanent tooth?

A

-Resembles the maxillary first molar

29
Q

(Roots) Deciduous maxillary second molar;

A

Trifrucated; short root trunk could be absent

30
Q

Deciduous maxillary second molar has a cusp of carabelli?

A

yes like the permanent maxillary first molar

31
Q

(Mesial View) Deciduous maxillary second molar; Root shape? The prominence of MB bulge in comparison to the first molar? Occlusal table width? buccal cus tips location?

A
  • Divergent roots
  • MB bulge less prominent than the first molar
  • Narrow occlusal table
  • Buccal cusp tips are more centered in occlusal table than in permanent molar
32
Q

(Occlusal view) Deciduous maxillary second molar; what are the cusp sizes? Oblique ridge location?

A

ML= MB (Permanent first molar ML>MB)

  • Oblique ridge is DB-ML
  • ML Corner compressed compared to maxillary first molar

Dental anatomy (1 decks)

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