tooth numbering

8/10/2019 Tooth Numbering

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PREQUESTIONS

1. The first permanent teeth to erupt ............2. The opposite of permanent teeth .............3. The smallest teeth in the mouth..............4. The second teeth from the midline .........

5. These teeth are also known as the eyeteeth ...........6. They have one pointed cusp and a very long single root.........7. The longest teeth in the mouth..............

. They have two cusps !ut only one root.............". They are also called premolars.............1#. They have four or five cusps on the chewing surface .............11. These teeth usually come in at the age of si$ years..............12. They are the first permament teeth to come in that do not replace a deciduous tooth...........13. They have four %possi!ly five& cusps and three roots..........14. They are called the widom teeth .............15. They have four cusps and three roots..........16. Their roots are often fused together' at least somewhat .............17. (ow many teeth does a child have)

1 . (ow many sets of teeth does a person have in a lifetime)1". *hat will you advise patiets todo to take care of their teeth)

Read the following text and be prepared to sum it up and explain to your olleagues different sub hapters!

TOOT" NU#$ERIN%

+or permanent teeth %,adult teeth,&' the -niversal system assigns a num!er' ranging from 1 to 32' to each

individual tooth.

(ere are the rules Tooth /1 is the ma$illary %upper& right third molar. +rom tooth /1' se0uential num!ering moves forward along the ma$illary arch all the way across and

around to the ma$illary %upper& left third molar' which is tooth /16. Tooth num!ering then continues on !y dropping down to the mandi!ular %lower& left third molar %tooth

/17&. t then proceeds all of the way around the mandi!ular arch until tooth /32' the mandi!ular %lower& third

molar' has !een reached."ow it wor&s if some teeth are missing!

There is the possi!ility that a person will have some missing teeth. %Teeth that have !een e$tracted' have not yet

come in or else did not form.& n the case of missing teeth' the num!ering is carried out as if these teeth did e$ist.+or e$ample

f a person has all of their teeth e$cept for their wisdom teeth' their teeth will !e num!ered 2 thru 15and 1 thru 31.

f a person has had their lower right first molar e$tracted %tooth /3#&' the teeth on either side of thistooth space will still keep the num!ers 2" and 31.

ome people have all four of their second premolars %!icuspids& removed as part of their orthodontictreatment plan. ven though once they get their !races off no spaces will e$ist' when num!ering theirteeth' the person will still not have teeth assigned the num!ers 4' 13' 2# and 2".

Tooth /1 a$illary %upper& right 3rd molar Tooth /2 a$illary %upper& right 2nd molar Tooth /3 a$illary %upper& right 1st molar Tooth /4 a$illary %upper& right 2nd premolar %!icuspid&


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Tooth /5 a$illary %upper& right 1st premolar %!icuspid&Tooth /6 a$illary %upper& right canine %cuspid&Tooth /7 a$illary %upper& right lateral incisor Tooth / a$illary %upper& right central incisor Tooth /" a$illary %upper& left central incisor Tooth /1# a$illary %upper& left lateral incisor

Tooth /11 a$illary %upper& left canine %cuspid&Tooth /12 a$illary %upper& left 1st premolar %!icuspid&Tooth /13 a$illary %upper& left 2nd premolar %!icuspid&Tooth /14 a$illary %upper& left 1st molar Tooth /15 a$illary %upper& left 2nd molar Tooth /16 a$illary %upper& left 3rd molar Tooth /17 andi!ular %lower& left 3rd molar Tooth /1 andi!ular %lower& left 2nd molar Tooth /1" andi!ular %lower& left 1st molar Tooth /2# andi!ular %lower& left 2nd premolar %!icuspid&Tooth /21 andi!ular %lower& left 1st premolar %!icuspid&Tooth /22 andi!ular %lower& left canine %cuspid&Tooth /23 andi!ular %lower& left lateral incisor

Tooth /24 andi!ular %lower& left central incisor Tooth /25 andi!ular %lower& right central incisor Tooth /26 andi!ular %lower& right lateral incisor Tooth /27 andi!ular %lower& right canine %cuspid&Tooth /2 andi!ular %lower& right 1st premolar %!icuspid&Tooth /2" andi!ular %lower& right 2nd premolar %!icuspid&Tooth /3# andi!ular %lower& right 1st molar Tooth /31 andi!ular %lower& right 2nd molar Tooth /32 andi!ular %lower& right 3rd molar

In isors

These teeth are the first permanent teeth to erupt that replace a deciduous tooth. They have straight !iting edges'

a flat front surface and a single root. The shape of these teeth is useful for cutting through food.

'( )entral In isors *

These teeth !utt up against the midline of the mouth' making them the center most teeth. -pper central incisors

are larger than upper lateral incisors. ower central incisors are the smallest teeth in the mouth.


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$( +ateral In isors *

The second teeth from the midline. -pper lateral incisors look like upper central incisors !ut are smaller in si e.

ower lateral incisors are slightly larger than lower central incisors.

)anines * They have one large pointed cusp and a very long single root. The canine is the third tooth from the midline.These teeth are also known as eyeteeth and cuspids. Their !iting edge is composed of a single large cusp that issuited for !oth sei ing and holding food as well as cutting and tearing it .The upper canine is the longest tooth inthe mouth.

$i uspids

These teeth %especially the upper ones& usually have two o!vious cusps. ower !icuspids 8ust have one root.

-pper ones can have one or two. 9icuspid teeth are also called premolars.

Premolars

these teeth are also known as !icuspids. They have a shape that is useful for !oth cutting and tearing as well as

crushing food.

,( -irst Premolars *

the fourth tooth from the midline in each 0uadrant. -pper first premolars have two distinct cusps and have either

one or two roots. ower first premolars are the smallest type of premolar. They have one root' a prominent

cheek side cusp and a less pronounced tongue side cusp.

E( Se ond Premolars *

the fifth tooth from the midline. econd premolars have one root. -pper second premolars have two distinct

cusps. ower second premolars have a single cheek side cusp and either one or two less pronounced tongue side

cusps.

#olars

These teeth have !road surfaces that are used to crush and grind food. They have four or five distinct cusps'however' the cusps are shorter and more !lunted that those found on other cusped teeth.

-( -irst #olars *

the si$th tooth from the midline in each 0uadrant. :nother term for these teeth is ,si$ year molars, since they

usually come in at age si$ years. These teeth are the first permanent ones to come in that do not replace a

deciduous tooth. -pper first molars have four %or possi!ly five& prominent cusps and three roots. ower first

molars have five cusps and only two roots.

%( Se ond #olars *


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the seventh tooth from midline. :nother term for these teeth is ,twelve year molars, since they usually come in

at age twelve years. -pper second molars have four cusps and three roots. ower second molars have four cusps

and two roots. econd molars are usually slightly smaller in si e than first molars.

"( Third #olars *

the eighth tooth from the midline. :nother term for these teeth is the ,wisdom teeth., -pper third molars have

four cusps and three roots. ower third molars have four cusps and two roots. The roots of third molars are often

fused together' at least somewhat. Third molars are usually smaller in si e than second molars.

Test your &nowledge by naming the teeth in the figure below.

tooth numbering

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