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Flashcards in Dental Anatomy Deck (12):
1

point vs line angles

point angle
-ALL TEETH HAVE 4
-formed from junction of 3 surfaces

line angles
-Anterior teeth have 6
-posterior teeth have 8
-formed from junction of 2 surfaces

2

sulcus

where inclinces meet

3

fissure

narrow channel, sometimes deep, formed at depth of developemental grroves

4

pits

pinpoint depressions located at the junctions of developmental grooves

5

fossa

irregular depression or concavity

6

develeopmental grooves

sharpley defined, shallow, linear depressions
*pits are located at the termination or junction

7

summary of number of lobes for all teeth?

all anterior teeth = 3 labial and 1 lingual (cingulum)

premolars = 3 buccal and 1 lingual
**exception is MD 2nd premolar with 3 buccal and 2 lingual

1st molars = 5 lobes

2nd molars = 4 lobes

3rd molars = at least 4 lobes

8

how many embrasures?

4
lingual **larger than facial!
facial (labial or buccal)
occlusal or incisal
gingival or cervical

9

buccal cusps of MX posterior teeth oppose? lingual cusps oppose?
*picket fence

buccal oppose buccal grooves and embrasures

lingual oppose marginal ridges and central and distal fossa

10

remember what about lingual cusps of MX 1PM and 2PM?

they lean mesially!

11

calcification for all primary teeth starts?

4-6 months in utero
OR during 2nd trimester
OR ~17-26 weeks

12

calcification of secondary dentition?

6yr = birth
anteriors= 1y
premolars= 2 ys
12yr molars= 3 yrs
wisdom teeth= 7-9 yrs