300 Dental Anatomy FACTS part i

Question 1

are permanent or primary teeth less mineralized

Answer 1

Primary are less mineralized than permanent therefore they are worn more

Question 2

the difference in space from primary to permanent dentition in mm

Answer 2

2-4mm in the arch length

Question 3

Mamelons that remain beyond the age of ____ are generally indicate an open bite

Answer 3

10 years old

Question 4

at what age is the calcification of primary roots completed by ?

Answer 4

age of 3-4

Question 5

Rule of 4 of eruption for primary teeth

Answer 5

Rule of 4 - at age of 7 we have 4 teeth CI - add 4 months to it - age 11 months - 8 teeth 4 CI +LI -> age of 15 we have CI, LI , 1st Molar
eruption sequence -

Question 6

Eruption sequence for primary teeth

Answer 6

Central incisor - lateral incisor -1st molar -canine -2nd molar
anterior to posterior except canine
lower before upper except lateral incisors

Question 7

Eruption sequence in permanent teeth

Answer 7

1st molar -central Incisors - lateral incisors - = 6-9 years old
mand : canine- 1 premolar - 2nd premolar - 9-12
max - 1st premolar - 2nd premolar - canine 9-12
2nd molar - at age of 12
3rd molar wisdom - age of 18

Question 8

first permanent tooth to erupt ? at what age ?

Answer 8

1st molar at the age of 6

Question 9

primate space develop in the maxillary primary dentition between ________ and _________

Answer 9

lateral incisor and canine

Question 10

primate space develop in the mandibular primary dentition between _________ and ______

Answer 10

canine and 1st molar

Question 11

The primary spacing for anterior teeth is most frequent caused by ______

Answer 11

growth of dental arch

Question 12

which direction do enamel rods point in the cervical 3rd of the primary dentition vs permanent ?

Answer 12

the direction of primary enamel rods in the cervical 3rd is in occlusal direction vs permanent is perpendicular to occlusal

Question 13

T/F primary molars roots are more divergent than permanent roots

Answer 13

true

Question 14

T/F primary molars root trunk is longer than the permanent

Answer 14

False - primary molars have short or sometimes lack root trunk

Question 15

what primary teeth has the smallest crown faciolingually

Answer 15

primary mandibular incisor

Question 16

the primary and permanent ____________ is the most bilaterally symmetrical teeth

Answer 16

mandibular central incisor

Question 17

Order of CROWN height from tallest to second tallest to 3rd tallest

Answer 17

Mandibular canine > Maxillary central incisors > Maxillary

Question 18

how many mamelons do canines have ?

Answer 18

0 -> CANINES DO NOT HAVE MAMELONS

Question 19

how many mamelons do central incisors have

how many developmental lobes ?

Answer 19

3 mamelons

4 lobes