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Boards - Dental Anatomy Facts from videos > Part 3 Shuffled > Flashcards

Part 3 Shuffled Flashcards

(62 cards)

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1
Q

When the mandible moves from CO to edge to edge, what do the condyles do

A

Condyles move forward and downward

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2
Q

when the mandible moves from CO to edge to edge, what does the non-working condyle do

A

moves downward, forward, and medial

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3
Q

What plays the greatest role in discluding the posterior teeth in latero-protrusive movements

A

Anterior guidance

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4
Q

Teeth are in contact in intercuspal position during non masticatory swallowing or during masticatory swallowing

A

Non masticatory swallowing

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5
Q

What almost exclusively determines intercuspal position

A

Tooth contact

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6
Q

What is a tooth guided position and what is a ligament guided position

A

Tooth guided - Centric occlusion or intercuspal positionLigament guided - Centric relation

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7
Q

In Posselt’s envelope, what is the most superior point

A

Maximum intercuspal position = intercuspal position = CO

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8
Q

Bennet Movement

A

Side shift of the mandible toward the working condyle, the side it’s moving to

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9
Q

When does Bennet movement occur

A

During the earliest stage of lateral movement

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10
Q

What is postural position

A

Physiological rest positionAbout 2mm lower than CO

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11
Q

Is Postral position a border position

A

no

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12
Q

Mandibular postral position determined almost exclusively by what

A

mandibular musculature

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13
Q

If you move from postral position to CO, use what muscle

A

Use anterior fibers of temporalis

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14
Q

Curve of Spee

A

the Anterior-posterior curvature of the occlusal surfaces as seen in a facial/buccal view- think weeee, sliding down the teeth

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15
Q

Curve of Wilson

A

Curved bridge from left to right side inside the mouth

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16
Q

Overjet

A

Horizontal overlap -Usual overjet is 2-4 mm-think jet on the horizon

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17
Q

Overbite

A

Vertical overbite-think, you bite up and down

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18
Q

The main component of enamel

A

inorganic matternot collagen

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19
Q

Direction of enamel rods in permanent teeth in cervical third

A

Gingival direction or not towards the incisal/occlusalrods in cervical third of deciduous teeth run incisal-cervically

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20
Q

Perikymata

A

Result from the normal enamel apposition - seen on outside surface -Manifestation of striae of Retzius on enamel surface

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21
Q

Striae of Retzius

A

Developmental disturbances inside tooth in the enamel -run obliquely from DEJ to enamel surface

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22
Q

For multi-rooted teeth, where does dentin most rapidly form

A

at the floor and roof of pulp chamber

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23
Q

Caries stimulates production of what

A

tertiary dentin

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24
Q

Percentage of dentin that is organic

A

20-30%

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25
Primary function of dental pulp is
to form dentin -not to nourish or provide sensation
26
What is the dentin and pulp formed from
Dental Papilla -think D.P. - dental papilla and dentin pulp
27
Dentin that is most highly mineralized is
Intra or peritubular dentin -Peritubular - right around the odontoblastic process -INTERtubular dentin is in between two processes
28
The DEJ occurs at what two structures during development
dental papilla and inner enamel epithelium -DP cells in contact with IEE = odontoblasts
29
Softest dental tissue
cementum
30
2 types of cementum, where are they
Acellular - coronal 2/3 -Cellular - apical 1/3, think that the cells are down where the blood supply is coming from
31
When viewed from the occlusal, the arrangement of the teeth are what shape,however, the 4 or 5 posterior teeth are aligned in what shape
all teeth in parabolic shapeposterior teeth aligned in straight line
32
All teeth develop from how many lobesWhat are the exceptions
All teeth develop from 4 lobes -Except permanent first molars - 5 lobes -And mandibular 2nd premolar 3 cusp type - 5 lobes
33
Marginal ridges of mand first premolar
mesial marginal ridge more cervical than the distal
34
All teeth have distal and mesial marginal ridges - true or false
true
35
What separates cusp ridges from marginal ridges
developmental grooves
36
Union of a facial and lingual triangular ridge
Transverse ridge
37
How many teeth in permanent dentition normally have a cingulum, which are they
All 12 anterior teeth
38
What percent of the total F-L dimension is made up by the occlusal table of posterior teeth
55-65%
39
What makes up the periodontium
Gingiva, PDL, Cementum, Alveolar bone (junctional epithelium is often included) -epithelial attachment - junctional epithelium
40
How wide is PDL normally and with age
PDL is 0.2 mm wide -Old age decreases to 0.1 due to deposition of cementum and bone
41
Attachments of PDL fibers
tooth (cementum) to dental alveolar bone
42
Attachments of gingival fibers
tooth (cementum) to gingiva
43
What is the predominant connective tissue for PDL fibers
Type 1 collagen
44
What fibers provide the major support for a tooth during function
Oblique fibers
45
Which fiber reduces the likelihood of forceful impaction into alveolus
Oblique fibers
46
Group of fibers most likely found in middle third of root
Oblique fibers
47
Most prevalent type of PDL fiber
Oblique fibers
48
Transseptal fibers are PDL or gingival fibers
Gingival fibers
49
Attachments of transseptal fibers
Tooth to tooth
50
About how much of permanent root is formed when tooth erupts
50%
51
When is the apex of a tooth fully formed after it erupts
about 2-3 years
52
Function of the pulp
form dentin - primary function -supply nutrients to dentin -transmit sensory stimuli
53
Which teeth have facial heights of contour in cervical third
All except mandibular molars
54
Lingual heights of contour found where
Anterior teeth - cervical third -Posterior teeth - middle third except MD 2nd premolar is in occlusal third
55
Location of lingual height of contour on mand 2nd premolar
occlusal third
56
Where is the greatest depth of curvature of the cervical line of permanent teeth
Mesial aspect
57
Where does the CEJ dip deeper
Ant teeth than postMax than mandMesial than distalGreatest on mesial of max central incisorThink max central incisor as model for all of these
58
Supernumerary teeth commonly where
between maxillary centralsor as a 4th molar sometimes
59
Concrescence
when cementum of two teeth join together
60
Oligodontia
presence of fewer than normal teeth - 6?
61
Which aspect of mand central opposes the which part of max central
distoincisal aspect of mand central opposes lingual fossa of max central
62
Exceptions to picket fence drawing
Lingual cusps of max premolars contact the distal fossa of respective mand premolars because of mesial slant of lingual cusp (max 2nd premolar lingual cusp contacts distal fossa of mand 2nd premolar) In a cusp to fossa contacting relationship in ICP, max first premolar is most likely to articulate with mand first premolar - this is due to lingual inclination of max first premolar. Mand second premolar is not involved in cusp to fossa manner

Boards - Dental Anatomy Facts from videos (7 decks)

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