Tooth Morphology Of The Permanent Dentition Flashcards
How many teeth is the permanent dentition made up of?
32 teeth
(16 in upper jaw, 16 in lower jaw)
How many quadrants is the oral cavity divided into?
4
When you chart a patient what is R and L?
RHS is patients left vice versa
When does the upper central incisor erupt?
7-8yrs
When does the upper lateral incisor erupt?
8-9yrs
When does the upper canine erupt?
11-12yrs
When does the upper first pre molar erupt?
10-11yrs
When does the upper second pre molar erupt?
10-12yrs
When does the upper First molar erupt?
6-7yrs
When does the upper Second molar erupt?
12-13yrs
When does the upper Third molar erupt?
17-21yrs
When does the lower central incisor erupt?
6-7yrs
When does the lower lateral incisor erupt?
7-8yrs
When does the lower canine erupt?
9-10yrs
When does the lower first pre molar erupt?
10-12yrs
When does the lower second pre molar erupt?
11-12yrs
When does the lower first molar erupt?
6-7yrs
When does the lower second molar erupt?
11-13yrs
When does the lower third molar erupt?
17-21yrs
How do we determine the root completion age?
2-3yrs after eruption date
Eg eruption - 7-8yrs … root completion - 10yrs
Teeth notation systems
- Universal system (USA)
- Palmer nomination system (UK)
- World dental federation (World)
How does the universal system work?
Upper right 1 (wisdom tooth) until 8 (central) then 8 - 16
Lower left 17 (wisdom) until 24 (central) then 25 - 32
The universal system
FDI system - permanent dentition
Each quadrant is given a number
URQ = 1
ULQ = 2
LLQ = 3
LRQ = 4
Double digit system - (each tooth is designated quadrant number and tooth number)
FDI system - primary dentition
Each quadrant is given a number
URQ = 5
ULQ = 6
LLQ = 7
LRQ = 8
Double digit system - (each tooth is designated quadrant number and tooth number 1-5)
Palmer notation system
Symbol + tooth number 1-8 for permanent teeth
