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Dental Anatomy and Occlusion > Unit 3 > Flashcards

Unit 3 Flashcards

(62 cards)

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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
Cingulum offset _____ in central maxillary incisor.
Distally
26
Root length of maxillary central incisor
1.5x crown length
27
Root shape of Max Central Incisor near CEJ
rounded triangle
28
Root Shape of Max Cen Incisor mid root
Ovoid (wider labiolingually vs mesiodistally)
29
Condition of a maxillary central incisor when the root is exceptionally short + abonormal contour of the crown
Dwarfed Root
30
Dwarfed root outcomes
1. Lack of root support | 2. Teeth don't last long
31
Screwdriver shaped crown (labially) of the maxillary central incisor, caused by congenital syphilis
Hutchingson's Incisors
32
Large accessory cusp on lingual surface on maxillary central incisor *involved teeth resemble Phillips screwdriver
Talon Cusp
33
Extra teeth found between the roots of the 2 central incisors of the alveolar bone *cysts also found here
Mesiodens or Supermumerary Teeth
34
Maxillary Lateral incisors vs Max Central Incisors
1. Similar Root Length 2. Longer incisocervically 3. Narrower Mesiodistally 4. Rounder
35
Greatest Variation in form from any other permanent tooth (not counting 3rd molars)
Max Lat Incisor
36
Start Calcification of Max Lat Incisor
1 year
37
Enamel Complete of Max Lat Incisor
4-5 years
38
Eruption of Max Lat Incisor
8-9 years
39
Root Completion of Max Lat Incisor
11 years
40
Distoincisal angle of Max Lat Incisor compared to Max Cent Incisor
More rounded, most rounded incisal angle of any incisor
41
Does Max Lat Incisor have developmental depressions and imbrication lines?
Yes
42
CEJ of Lingual Aspect of Max Lat Incisor
Curves apically, but offset distally
43
Lingual fossa of Max Lat Incisor Compared to Max Cent Incisor
Deeper
44
Lingual Pit of Max Lat Incisor
More common than in central, potential site for caries
45
Linguogingival fissure of Max Lat Incisor
Sometimes found, may extend to root
46
Contact are on mesial aspect of Max Lat Incisor
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
Incisal Aspect of Max Lat Incisor
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
Root of Max Lat Incisor
1. Single Root 2. Wider Labiolingually than mesiodistally 3. Ovoid in both CEJ and Midroot 4. About same length as central
49
Tooth buds do not form
Agenesis
50
Lingual pit of maxillary lateral incisor where enamel and dentin form into pulp cavity
Dense in dente
51
Maxillary laterals naturally don't occur
Congenitally missing
52
Diminutive peg-shaped crown form of Max Lat Incisors
Peg Lateral
53
Start Calcification of Mand Cent Incisor
3-4 Months
54
Enamel Completion of Mand Cent Incisor
4-5 Years
55
Eruption of Mand Cent Incisor
6-7 Years
56
Root Completion of Mand Cent Incisor
9 Years
57
How many mamelons in Mand Central Incisor?
3 (if present)
58
Are there developmental depressions or imbrication lines on Mand Central Incisor?
No
59
Slight Lingual Fossa
Mand Cent Incisor
60
No grooves, fissures, or pits. Minimal Cingulum
Mand Cent Incisor
61
Lingual Margin of Mesial Aspect on Mand Cent Incisor
Concave in incisal 2/3 and convex in gingival 3rd
62
Incisal edge normally straight or slightly rounded w/ slight inclination toward labial due to wear (great variability in lingual inclination)
Mandibular Central Incisor

Dental Anatomy and Occlusion (4 decks)

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