numbering system dental anatomy

Moamer GabsaBDS,diploma of research method

NUMBERING SYSTEM Moamer Gabsa- Alneelain university

OBJECTIVE

By the end of this lecture you can be able to :•Know the nomenclature of tooth •Identify the common types of tooth numbering system .•Know why we used this numbering system

Moamer Gabsa- Alneelain university

DENTAL NOMENCLATUREBy words•Set: Deciduous or permanent• Jaw: Maxillary or mandibular•Side: Right or left•Order within a class• Central or lateral• First/second/third

•Class: Incisor/canine/premolar/molar

Example : permanent mandibular right central incisor Moamer Gabsa- Alneelain university

•permanent maxillary right central incisor 1


Of the many systems, the three most commonly used will be described.A.Palmer Notation MethodB.Universal Numbering SystemC.FDI System


• Numbering systems in dentistry serve as abbreviations.

Instead of writing out the entire name of a tooth, such as permanent maxillary right central incisor, it is much simpler to assign it a :• Number• letter • symbol


PALMER NOTATION METHOD


•Approved by American Dental Association in 1947• Tooth is represented by a number 1 – 8 (permanent) or a letter

A – E (deciduous)• Two lines; indicates which quadrant the tooth belongs to• a horizontal representing the occlusal plane • a vertical representing the midline

• Examples:• Permeant Maxillary right central incisor • Deciduous Mandibular left second molar

1E

Palmer/Zsigmondy notation system


E D C B AE D C B A A B C D E

A B C D E 8 7 6 5 4 3 2 18 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8Deciduous Deciduous PermanentPermanent


Tooth Code

Central incisor 1

Lateral incisor 2

Canine 3

First premolar 4

Second premolar 5

First molar 6

Second molar 7

Third molar 8

Tooth Code Central incisor ALateral incisor BCanine CFirst molar DSecond molar E

Permanent

Deciduous


Right Left

Mandibular

Maxillary

Maxillary Left

Maxillary Right

Mandibular Left

Mandibular Right


UNIVERSAL NUMBERING SYSTEM


• Palmer – difficulty in keyboard typing•ADA adopted the universal system in 1968


• Letters for deciduous teethLetters for deciduous teeth• Consecutive from A to T• Following a clockwise order from maxillary right second molar to

mandibular right second molar

A B C D ET S R Q P O N M L K

F G H I J


•Numbers for permanent teethNumbers for permanent teeth• Consecutive from 1 to 32• Following a clockwise order from maxillary right third

molar to mandibular right third molar

1 2 3 4 5 6 7 832 31 30 29 28 27 26 25

24 23 22 21 20 19 18 17

9 10 11 12 13 14 15 16


Tooth Code

Third molar 1

Second molar 2

First molar 3

Second premolar

4

First premolar 5

Canine 6

Lateral incisor 7

Central incisor 8

Right maxillary Tooth Code

Central incisor 9

Lateral incisor 10

Canine 11

First premolar 12

Second premolar

13

First molar 14

Second molar 15

Third molar 16

Tooth Code

Third molar 17

Second molar 18

First molar 19

Second premolar

20

First premolar 21

Canine 22

Lateral incisor 23

Central incisor 24

Right mandibular Left mandibular Left maxillary Tooth Code

Central incisor 25

Lateral incisor 26

Canine 27

First premolar 28

Second premolar

29

First molar 30

Second molar 31

Third molar 32


Tooth Code

Central incisor F

Lateral incisor G

Canine H

First molar I

Second molar J

Tooth Code

Second molar A

First molar B

Canine C

Lateral incisor D

Central incisor E

Left maxillary Right maxillary

Tooth Code

Second molar K

First molar L

Canine M

Lateral incisor N

Central incisor O

Tooth Code

Central incisor P

Lateral incisor Q

Canine R

First molar S

Second molar T

Left mandibular Right mandibular


FDI NUMBERING SYSTEM


•Proposed by FDI & adopted by WHO•Each tooth is allocated a two-digit number; the left designates the quadrant and the right designates the tooth order •Examples•Mandibular right permanent canine 43•Maxillary left deciduous lateral incisor 62


Permanent

Deciduous

Quadrant Code Right maxillary 1Left maxillary 2Left mandibular 3Right mandibular 4

Quadrant Code Right maxillary 5Left maxillary 6Left mandibular 7Right mandibular 8Moamer Gabsa- Alneelain university

Tooth Code

Central incisor 1

Lateral incisor 2

Canine 3

First premolar 4

Second premolar 5

First molar 6

Second molar 7

Third molar 8

Tooth Code Central incisor 1Lateral incisor 2Canine 3First molar 4Second molar 5

Permanent

Deciduous


55 54 53 52 51

85 84 83 82 81

71 72 73 74 75

61 62 63 64 65

18 17 16 15 14 13 12 11

48 47 46 45 44 43 42 41

21 22 23 24 25 26 27 28

31 32 33 34 35 36 37 38

Permanent

Deciduous

FDI NUMBERING SYSTEM(TWO DIGIT SYSTEM)


Right maxillary Tooth Code

Central incisor 21

Lateral incisor 22

Canine 23

First premolar 24

Second premolar

25

First molar 26

Second molar 27

Third molar 28

Right mandibular Left mandibular Left maxillary Tooth Code

Central incisor 41

Lateral incisor 42

Canine 43

First premolar 44

Second premolar

45

First molar 46

Second molar 47

Third molar 48

Tooth Code

Central incisor 11

Lateral incisor 12

Canine 13

First premolar 14

Second premolar

15

First molar 16

Second molar 17

Third molar 18

Tooth Code

Central incisor 31

Lateral incisor 32

Canine 33

First premolar 34

Second premolar

35

First molar 36

Second molar 37

Third molar 38


Tooth Code

Central incisor 61

Lateral incisor 62

Canine 63

First molar 64

Second molar 65

Left maxillary Right maxillary

Tooth Code

Central incisor 81

Lateral incisor 82

Canine 83

First molar 84

Second molar 85

Left mandibular Right mandibular

Tooth Code

Central incisor 51

Lateral incisor 52

Canine 53

First molar 54

Second molar 55

Tooth Code

Central incisor 71

Lateral incisor 72

Canine 73

First molar 74

Second molar 75


• Some times we used the hash (#) before the two digit (FDI system) to differentiate between universal codes and FDI codes • #22 = permanent maxillary left lateral incisor • 22 = permanent mandibular left canine

18 17 16 15 14 13 12 11

48 47 46 45 44 43 42 41

21 22 23 24 25 26 27 28

31 32 33 34 35 36 37 38

1 2 3 4 5 6 7 832 31 30 29 28 27 26 25

24 23 22 21 20 19 18 17

9 10 11 12 13 14 15 16

FDI system Universal system


ANY QUESTION ?



Summary

REFERENCES• Bunn S (19 May 2006). "Tooth Numbering". Retrieved 2010-04-21• WHEELER’S DENTAL ANATOMY, PHYSIOLOGY, ISBN: 978-1-4160-6209-7


http://www.drbunn.com/faq/tooth-numbering

numbering system dental anatomy

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