300 facts of dental anatomy

Question 1

permanent or primary teeth are less mineralized and due to that are more worn

Answer 1

primary teeth and are more worn

Question 2

what is the difference in space from primary to permanent dentation in mm

Answer 2

2-4 mm space

Question 3

if mamelons remain beyond age ___ means you have ____

Answer 3

10 , open bite

Question 4

calcification of primary roots are ompleted by age ____ ?

Answer 4

3-4 years old

Question 5

List the rule of eruption for primary teeth

Answer 5

central - lateral - 1st MOLAR -CANINE - SECOND MOLAR

Question 6

Primary teeth erupt front to back except ?

Lower before upper except ?

Answer 6

front to back exctept canine erupt after 1st molars
lower ( man) before upper ( max ) except max lateral incisors
erupt before mand. lateral incisors

Question 7

Rule of 4 , eruption period for primary teeth

Answer 7

at 7 months all 4 central incisors are erupted - add 4 months to it - at 11 months all 8 teeth central and lateral erupted - at 15 central lateral and 1ST MOLARS - 19 months we have CI , LI , 1st M,
23 - all complete eruption

Question 8

Adults rule of 3 eruption sequence

Answer 8

1st molar - CI, LI @ age 6 -9
mand: C -> 1st premolar ->2nd premolar @ age 9-12
( max 1st premolar - 2nd premolar - canine )
2nd molar - @ age 12
3rd molar @ age 18

Question 9

primate space develop in the maxillary primary dentation between ____ and _____ teeth
in the mandibular primary dentation between ____ and ____

Answer 9

max : lateral incisor and canine

Mand: canine and first molar

Question 10

The primary spacing for ANTERIOR teeth most frequent caused by the ?

Answer 10

growth of dental arch

Question 11

The direction of primary enamel rods in the cervical 3rd is in which direction ?
Permanent enamel rids direction in the cervical 3rd ?

Answer 11

occlusal direction for primary teeth

perpendicular to occlusal direction for permanent teeth

Question 12

primary vs permanent molar root relationship

Answer 12

primary molars have divergent roots compared to permanent

Question 13

Primary has bigger/smaller ? root trunk compared to permanent teeth ?

Answer 13

Primary’s root trunk is small maybe be absent

Question 14

T/F the primary AND permanent mandibular central incisors have the most bilateral symmetry

Answer 14

True -

Question 15

what teeth has the smallest faciolingula crown dimensions

Answer 15

Mandibular central incisors

Question 16

In delayed resorption of primary incisors , the permanent incisors usually erupt ______

Answer 16

lingually aka Shark teeth

Question 17

Where in the primary incisors can we find a prominent cervicle ridge ?

Answer 17

Cervicle ridge is found in the Facial and lingual surfaces

Question 18

From a facial view the crown of a primary canine has _____slope longer than ______

Answer 18

mesial incisor in longer than the distal incisor

Question 19

the cusp tip of the primary canine is generally off set to ____ ( Mesial or Distal ?)

Answer 19

Distal therefore the mesial slope is longer than the distal

Question 20

Maxillary 1st primary molar has a crown that somewhat resembles which tooth ?

Answer 20

permanent PRE_MOLAR

Question 21

The Max 1st primary molar has roots that resembles a typical permanent ____ ?

Answer 21

permanent max MOLAR !!!

Question 22

which maxillary primary teeth has the largest ( or most prominent ) cervical ridge ?

Answer 22

Maxillary first molar

Question 23

The only primary tooth with an OBLIQUE ridge

Answer 23

MAXILLARY 2nd primary molar

Question 24

Which primary teeth is the only primary posterior tooth to have an oblique and Transverse ridges & DL groove

Answer 24

primary 2n molar

Question 25

Which primary teeth exhibits cusp of carabelli

Answer 25

primary 2nd molar

Question 26

what tooth is the last to erupt in primary dentation

Answer 26

MAX 2nd molar
remember - front to back except canine
lower then upper except lateral incisor

Question 27

which primary max molars exhibits more cusps

1st molar or 2nd molar

Answer 27

primary second molar exhibits more cusps than the 1st molar

remember primary second molars are the only teeth with transverse and oblique ridge

Question 28

Which primary tooth has the most distinctly prominent facial cervical ridge ?

Answer 28

PRIMARY MANDIBULAR 1ST MOLAR

Question 29

facial view of which primary tooth has the -CEJ most apically positioned on the Mesial 1/3

Answer 29

mandibular 1st molar