overview of dentition 2

premolar

2 cusps

molars

several cusps

How many teeth are there in primary or deciduous dentition?

20

How many premolars and how many molars are there in the permanent dentition?

8 premolars
12 molars

palmer system

1-8 in each quadrant starting most mesial
often used by orthodontists
primary are labeled A-E

ISO

two number system (quadrant + number)

Which permanent teeth come in first?

mandibular 1st molars then maxillary 1st molars (6-7)

Which permanent teeth come in second?

central incisors - mandibular age 6-7, maxillary age 7-8

Which permanent teeth come in third?

lateral incisors - mandibular age 7-8, maxillary age 8-9

Which permanent teeth come in fourth?

mandibular canines age 9-10

Which permanent teeth come in fifth?

1st premolars - maxillary age 10-11, mandibular age 10-12

Which permanent teeth come in sixth?

2nd premolar - maxillary age 10-12, mandibular age 11-12

Which permeant teeth come in seventh?

maxillary canines age 11-12

Which permanent teeth come in eighth?

mandibular 2nd molars emerge followed by the maxillary (12 year molars)

When do third molars appear?

age 17 (wisdom teeth)