Deciduous teeth

Fluorosis

subsurface hypomineralization and porosity b/w the developing enamel rods

risk of fluorosis

children younger than 8 YO

most susceptible period for permanent maxillary incisors

b/w 15 and 30 months

no further risk of fluorosis

after 8 YO
-permanent tooth enamel is fully mineralized

primary teeth do not have which teeth

premolars

primary molars are replaced with what

permanent premolars

maxillary central incisors erupt b/w ages

8 and 12

maxillary primary central incisors exfoliate b/w

6 and 7 years

maxillary central incisors (mamelons and cervical ridges)

-no mamelons
-prominent facial and lingual cervical ridge

maxillary primary lateral incisors exfoliate b/w

7 and 8 YO

maxillary canines erupt b/w

ages 16 and 22 months

maxillary primary canines exfoliate b/w

10 and 12 years

maxillary canines facial shape

pentagon

maxillary first molars erupt b/w

13 and 19 months

primary first molars exfoliate b/w

9 and 11 years

number of cusps on maxillary first molars

4 cusps

smallest primary molars

first molars

primary second molars exfoliate b/w

10 and 12 years

maxillary second molars occlusal outline

rhomboidal

mandibular central incisors erupt b/w

6 and 10 months

mandibular primary central incisors exfoliate b/w

6 and 7 years

mandibular lateral incisors erupt b/w

7 and 10 months

mandibular primary lateral incisors exfoliate b/w

7 adn 8 years

maxillary canines cusp ridges

maxillary longer than distal

mandibular canines cusp ridge

distal longer than mesial

mandibular canines facial shape

pentagonal

mandibular canines erupt b/w

18 adn 12 years

mandibular primary canines exfoliate b/w

9 and 12 years

mandibular 1st molars erupt b/w

14 and 18 months

mand. 1st molars exfoliate b/w

9 and 11 years

prominent transverse ridge

primary mand. first molars

mand. 1st molar number of cusps and largest

4 cusps
-MB largest, ML, DB, DL

mand 2nd molars eruption

24 adn 32 months

mand. primary second molars exfoliate

10 and 12

mand. 2nd molars occlusal outline

rectangular

mand. 2nd molars number of cusps

5 cusps (MB, ML, D, DB, DL)

primary dentition eruption sequence

centrals, laterals, 1st molars, canines, 2nd molars

mamelons

not present in primary incisors

enamel of primary teeth

thinner and whiter

which molar is larger

2nd molar (secondary teeth: 2nd molar smaller than 1st)

primary dentition roots

-anterior: narrower mesiodistally
-posterior: longer and more slender roots

mandibular primate space

space between primary mandibular canine and first molar

maxillary primate space

seen between the maxillary primary lateral incisor and canine