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Dental Anatomy and Occlusion > Unit 3 > Flashcards

Unit 3 Flashcards

1
Q

Smallest Permanent Teeth in the mouth

A

Mandibular Central Incisor

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2
Q

3 Rounded extensions of enamel on the incisal ridge of recently erupted incisors

A

Mamelons

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3
Q

Mesial and Distal terminations of the lingual surface

A

Marginal Ridges

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4
Q

Simplest and least variable teeth in the mouth

A

Mandibular Incisors

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5
Q

______ are parallel to the tooth’s long axis (vs. posterior teeth @ right angle)

A

Marginal Ridges

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6
Q

Concavity that covers incisal half of lingual surface

A

Incisor Lingual Fossa

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7
Q

Lingual ridge w/ 2 fossae on lingual surface

A

Canine Lingual Fossa

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8
Q

2+ fossae on occlusal surfaces

A

Posterior Lingual Fossas

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9
Q

Covers the remainder of the lingual surface of incisors

A

Cingulum

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10
Q

Cinculum is only found on _____ and ______.

A

Incisors and canines

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11
Q

Calcification start in Maxillary Central Incisors

A

3-4 Months

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12
Q

Enamel Completion in Maxillary Central Incisors

A

4-5 years

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13
Q

Eruption in Maxillary Central Incisors

A

7-8 years

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14
Q

Completion of Root in Maxillary Central Incisors

A

10 years

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15
Q

Mesioincisal angle is sharp

A

Maxillary Central Incisor

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16
Q

Seperate the cingulum and lingual fossa

A

Linguogingival groove

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17
Q

Located btwn the cingulum and the fossa; can be found near center of the linguogingival groove

A

Lingual Pit

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18
Q

Where are the lingual pit and groove more common?

A

Maxillary Lateral Incisors

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19
Q

Mesial and distal borders of the lingual fossa/surface make up the _____

A

Marginal ridges

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20
Q

Labial outline and height of contour of Mesial Aspect of Maxillary Central Incisor

A
  1. Convex

2. Gingival 3rd

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21
Q

Shape of CEJ at the Mesial Aspect of Maxillary Central Incisor

A

Curves incisal

*greatest depth of curvature in mouth

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22
Q

Mesial Contact are of Maxillary Central Incisors

A
  1. Incisal 3rd
  2. Centered labiolingually
  3. Roughly ovoid shape
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23
Q

Exceptions of Distal aspect of Maxillary Central Incisor

A
  1. Distal surface is smaller than mesial
  2. More convex incisogingivally
  3. CEJ doesn’t curve as far incisally
  4. Contact are is smaler and more round
  5. Distal contact area located farther gingivally (still in incisal 3rd)
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24
Q

Widest mesiodistal incisal surface

A

Maxillary Central Incisor

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25
Q

Cingulum offset _____ in central maxillary incisor.

A

Distally

26
Q

Root length of maxillary central incisor

A

1.5x crown length

27
Q

Root shape of Max Central Incisor near CEJ

A

rounded triangle

28
Q

Root Shape of Max Cen Incisor mid root

A

Ovoid (wider labiolingually vs mesiodistally)

29
Q

Condition of a maxillary central incisor when the root is exceptionally short + abonormal contour of the crown

A

Dwarfed Root

30
Q

Dwarfed root outcomes

A
  1. Lack of root support

2. Teeth don’t last long

31
Q

Screwdriver shaped crown (labially) of the maxillary central incisor, caused by congenital syphilis

A

Hutchingson’s Incisors

32
Q

Large accessory cusp on lingual surface on maxillary central incisor
*involved teeth resemble Phillips screwdriver

A

Talon Cusp

33
Q

Extra teeth found between the roots of the 2 central incisors of the alveolar bone
*cysts also found here

A

Mesiodens or Supermumerary Teeth

34
Q

Maxillary Lateral incisors vs Max Central Incisors

A
  1. Similar Root Length
  2. Longer incisocervically
  3. Narrower Mesiodistally
  4. Rounder
35
Q

Greatest Variation in form from any other permanent tooth (not counting 3rd molars)

A

Max Lat Incisor

36
Q

Start Calcification of Max Lat Incisor

A

1 year

37
Q

Enamel Complete of Max Lat Incisor

A

4-5 years

38
Q

Eruption of Max Lat Incisor

A

8-9 years

39
Q

Root Completion of Max Lat Incisor

A

11 years

40
Q

Distoincisal angle of Max Lat Incisor compared to Max Cent Incisor

A

More rounded, most rounded incisal angle of any incisor

41
Q

Does Max Lat Incisor have developmental depressions and imbrication lines?

A

Yes

42
Q

CEJ of Lingual Aspect of Max Lat Incisor

A

Curves apically, but offset distally

43
Q

Lingual fossa of Max Lat Incisor Compared to Max Cent Incisor

A

Deeper

44
Q

Lingual Pit of Max Lat Incisor

A

More common than in central, potential site for caries

45
Q

Linguogingival fissure of Max Lat Incisor

A

Sometimes found, may extend to root

46
Q

Contact are on mesial aspect of Max Lat Incisor

A
  1. Similar to Central Incisor, but smaller
  2. Found in incisal 3rd near middle 3rd junction
  3. CEJ has less depth of curvature than central incisor
47
Q

Incisal Aspect of Max Lat Incisor

A
  1. Incisal portion of cingulum may have a tubercle
  2. Cingulum more prominent
  3. More convex labially and lingually
  4. More rhomboidal shape, like canines
48
Q

Root of Max Lat Incisor

A
  1. Single Root
  2. Wider Labiolingually than mesiodistally
  3. Ovoid in both CEJ and Midroot
  4. About same length as central
49
Q

Tooth buds do not form

A

Agenesis

50
Q

Lingual pit of maxillary lateral incisor where enamel and dentin form into pulp cavity

A

Dense in dente

51
Q

Maxillary laterals naturally don’t occur

A

Congenitally missing

52
Q

Diminutive peg-shaped crown form of Max Lat Incisors

A

Peg Lateral

53
Q

Start Calcification of Mand Cent Incisor

A

3-4 Months

54
Q

Enamel Completion of Mand Cent Incisor

A

4-5 Years

55
Q

Eruption of Mand Cent Incisor

A

6-7 Years

56
Q

Root Completion of Mand Cent Incisor

A

9 Years

57
Q

How many mamelons in Mand Central Incisor?

A

3 (if present)

58
Q

Are there developmental depressions or imbrication lines on Mand Central Incisor?

A

No

59
Q

Slight Lingual Fossa

A

Mand Cent Incisor

60
Q

No grooves, fissures, or pits. Minimal Cingulum

A

Mand Cent Incisor

61
Q

Lingual Margin of Mesial Aspect on Mand Cent Incisor

A

Concave in incisal 2/3 and convex in gingival 3rd

62
Q

Incisal edge normally straight or slightly rounded w/ slight inclination toward labial due to wear (great variability in lingual inclination)

A

Mandibular Central Incisor

Dental Anatomy and Occlusion (4 decks)

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