Overview of Primary teeth

Question 1

how many primary teeth?

Answer 1

20

Question 2

what three annotations can be used?

Answer 2

universal: A-T
palmer: quadrant with letter A-E
FDI International: 5-8 with 1-5

Question 3

Central Incisors eruption age?

Answer 3

6-8 months

Question 4

Lateral Incisors eruption age?

Answer 4

7-9 months

Question 5

First molar eruption age?

Answer 5

12-14 months

Question 6

canine eruption age?

Answer 6

16-18 months

Question 7

second molar eruption age?

Answer 7

20-24 months

Question 8

Exfoliation of:
Central:
Lateral:
Canine:
First molar:
Second molar:

Answer 8

Man, Max
C: 6-7, 7-8
L: 7-8, 8-9
Canine: 10-12, 10-18
First molar: 9-10, 11-12
Second molar: 11-12, 10-12

Question 9

Where is there no cervical ridge located at?

Answer 9

all surfaces except lingual of molars

Question 10

Root sizes

Answer 10

longer, narrower and root trunk is nearly absent

Question 11

color of tooth

Answer 11

whiter because thinner than enamel

Question 12

which molar is bigger?

Answer 12

the second> first

Question 13

enamel, dentin, and pulp characteristics

Answer 13

enamel and dentin are thinner

pulp is relatively large and the pulp horns are more accentuated especially the mesial of decidious molars

Question 14

3 functions of primary dentition

Answer 14

1. maintain space
2. flared roots to prevent mesial drift
3. guide for permanent dentition

Question 15

type traits of primary maxillary central incisors

Answer 15

no mamelons; wide m-D

Question 16

type traits of primary canines

Answer 16

contacts are at the same level

Question 17

type traits of primary molars

Answer 17

2nd looks like a permanent 1st molar

Question 18

of roots, and cusps in maxillary 1st molar (primary dentition)

Answer 18

roots-3

cusps-3-4

Question 19

of roots, and cusps in mandibular 1st molar (primary dentition)

Answer 19

roots-2

cusps-4

Question 20

4 functions of dental curvature

Answer 20

1. stabilize arch
2. prevent disease (self cleansing)
3. disperse occlusal forces
4. protect soft tissues (symbionic relationship)

Question 21

with an improper curvature what 3 possibilities can arise

Answer 21

1. premature tooth loss
2. periodontal problems
3. occlusal discrepancies

Question 22

what is proximal contact areas?

Answer 22

defined as adjacent tooth surfaces that touch

Question 23

what 2 things does proximal contact areas increase to?

Answer 23

1. due to attrition

2. toward posterior (back of mouth)

Question 24

where are contact locations in the anterior and posterior teeth?

Answer 24

anterior: incisally placed=centered Facial-Lingual
posterior: usually middle 1/3 but more buccal of the center

Question 25

two importances of food

Answer 25

1. food-prevent impaction
2. stabilization of the arch-synergy of stabilization
   ^^ most important

Question 26

what are 2 outcomes from improper contacts?

Answer 26

1. gingivitis

2. alignment changes which will lead to bone and muscular changes and may destroy tooth structure and the support system

Question 27

what shape of embrasures form around proximal contact?

Answer 27

V-shaped spaces

Question 28

5 functions of embrasures

Answer 28

1. spillway escape for food
2. self-cleansing
3. protects gingiva
4. reflects tooth form
5. reduces occlusal trauma