Eruption
6-7 years
At what age do the first permanent molars typically erupt?
Birth or just before
When does calcification of the first permanent molars begin?
Maxillary First Permanent Molars
Which tooth has the cusp of Carabelli?
Maxillary Lateral Incisors
Which tooth would have a dens invaginatus?
It is within normal range for a six year old
A 6-year-old has erupted first molars but no lower centrals. Is this normal?
Mandibular Primary Central Incisors
Which primary teeth and typically the first to erupt?
First permanent molars
Which teeth begin calcifying at just before or at birth?
5 cusps, largest permanent tooth
What are some of the distinguishing features of mandibular first molars?
11-12 years
What is the eruption age of permanent maxillary canines?
Primary central incisors
A 4-month-old has erupted mandibular incisors. What are these called?
7-8 years
What is the typical eruption age for maxillary permanent central incisors?
Third permanent molars
What is the last permanent tooth to complete calcification of the roots?
First Primary Molar
Which primary molar has the tubercle of Zuckerkandl?
Second Primary Molars
Which teeth are most like the permanent first molars?
Take a radiograph as these are often congenitally absent
A 12-year-old has retained maxillary primary lateral incisors. What should be done?
Ectodermal dysplasia
Name a system condition that affects the eruption of teeth?
It happens much later
How does calcification relate to eruption timing?
2
How many roots does a maxillary first premolar have?
spaces between:
upper lateral incisor and canine
lower canine and first molar
What is Anthropoid spacing?
No teeth
A 2-year-old has no erupted teeth and ectodermal dysplasia. What are the implications?
6,1,2,3,4,5,7,8
What is the eruption sequence for permanent mandibular teeth?
Anodontia
What is the term for the complete absence of teeth.
Conical
What is the shape of a peg lateral incisor?
Oligodontia
What is the term used when six or more teeth are missing?
It is the space created because some of the primary teeth are larger than the permeant
What is leeway space?