1-Human Dentition Intro

8/14/2019 1-Human Dentition Intro

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بسم ا الرحن الرحيم

IN THE NAME OF ALLAH THE MOST

GRACIOUS THE MOST MERCIFUL



HUMAN DENTITIONDENTAL ANATOMY

).Prof. Abdelhamied Y. M. Saad, BDS, MS )Egypt, Ph.D. )U.S.A



INTRODUCTION

Dental Anatomy Includes:

.The Surface Form Of The Oral Cavity -1

The External Morphology And Internal -2.Composition Of The Individual Teeth

The Relationship Of The Teeth To Each -3

.Other And To The Skull Bone



GINGIVA

PALATINE

TONSILS

GINGIVALABIALFRENUM

UVULA

TONGUE

TEETH

CHEEK

LIP

FLOOR

OF THE

MOUTH

PALATE ROOF

OF THE

MOUTH

NOTE: TAP CLICK

THE SURFACE FORM OF THE -1

.ORAL CAVITY



Uponlooking to the oral cavity you can

:see

1 Lips- Teeth-2

Gingiva-3

Cheek-4

Tongue-5 Floor of the mouth-6

Roof of the mouth-7

THE SURFACE FORM OF THE -1THE SURFACE FORM OF THE -1

.ORAL CAVITY.ORAL CAVITY



There Are-Two Lips Upper Lip

.And Lower Lip

-The Corner Of The Mouth

Where They Meet Is CalledCommissureCommissure..

-Two Grooves Are Distinguished

.Around Lips

Nasolabial Nasolabial groove which run diagonally downward on each side of the nostril

,toward the corner of the lip

and labiomental labiomental groove which run

horizontally under the lower lip and

.emphasize the chin

Lips -1Li ps -1

U

p p e r

l i p

L o w e

r l i p

C o m m i s

s u r e

C o m m i s

s u r e

..

N a s o l a

b i a l g r o

o v e

L a b i o

m e n t a

l g r o o

v e



U p p e r

l i p

C o m m i s

s u r e

.

N a s o l a b

i a l g r o o

v eU p p e r l i p

Lo w e r l i p

C o m m i s s u r e .

C o m m i s s u r e .

L a b i o

m e n t a

l g r o o

v e

La b i o m e nt a l g r o o v e

C o m m i s

s u r e

.

N a so l a b i a l g r o o v e

N a s o l a b i a l g r o o v e

L o w e

r l i p

N a s o l a

b i a l g r

o o v e



Teeth Are Arranged In The Oral Cavity In-Two Arches Called TheDental Arches One

.Lower And One Upper

The Upper Arch Is Called The-MaxillaMaxilla

The Teeth In This Arch Are Called Upper Upper Or Or

Maxillary TeethMaxillary Teeth..

The Lower Arch Is Called The-MandibleMandible The

Teeth In This Arch Are CalledLower Lower Or Or

Mandibular TeethMandibular Teeth..

Each Dental Arch Has A-Midline That

Divides The Arch Into Two Approximately Equal Right And Left Segments Named As

.Quadrant

There Are-Four Quadrants In The Entire

.Oral Cavity

2- Teeth2- Teeth



In The Oral Cavity There Are Four

Classes :Of Teeth That Includes

Incisors-1Incisors-1::

There is two incisors: The -central

incisor and Thelateral . incisor Canines-2 Canines-2 ::

-There is one canine in each quadrant.

Premolars-3Premolars-3::

-There are two in each quadrant. First

and Second premolars.Molars-4Molars-4::

-There are three in each quadrant.

They are the First molar, the

Second molar and the Third molar.

-The incisors and canines are

considered Anterior teeth since

they are closer to the midline.

- Molars and premolars are

considered Posterior teeth since

they are farther from the midline.

12

3

4



Maxilla & Mandible



UPPER DENTAL ARCH .

))MAXILLARY TEETH

LOWER DENTAL ARCH

))MANDIBULAR TEETH

Upper lip

Lower lipCommissure

.

UPPERUPPER

OROR

MAXILLARYMAXILLARY

TEETHTEETH

LOWERLOWER

OROR

MANDIBULARMANDIBULAR

TEETHTEETH

LATERAL VIEWFRONT VIEW

Upper lip

Lower lip

Nasolabial groove

Labiomentalgroove



It is that part of the -

masticatory tissue that

surrounds the

cervical . part of teethIt is -firmly attached

to the teeth and their

.surrounding bone

3- Gingiva3- Gingiva



The lining of the inside of - the cheeks is shiny with a

white line called linea alba

buccalis running posteriorly

on each side at the level

where the upper and lower .teeth come together

The - parotid papilla : It is a

round elevation of tissue

between first and second molars at a just above the

occlusal plane. This papilla

cover the duct openings

(Stensen’s ducts ) on either

.side of the parotid glands

4- Cheeks4- Cheeks

Upper TeethUpper Teeth

Lower TeethLower Teeth



5- TongueThe tongue is a broad flat organ -

composed of muscles and

glands.- It rests in the floor of the mouth.

- It is the principle organ of taste

and is most important in speech

and invaluable during mastication

and deglutition (swallowing).

The -dorsumdorsum (topside) of the tongue is grayish red and is rough.

It is covered by different kinds of

.papillae-The smoother posterior third of

the dorsum contains numerous

mucous glands and lymph follicle referred to as the lingual tonsil.

- The ventralventral (undersurface) of the

tongue is shiny and blood vessels

are visible beneath the fine

mucous membrane.



- It is shiny andsome large blood vessels

may be seen near the

surface.

-Beneath the tongue thereare two bilateral bulges

caused by the presence of

large salivary glands.

- A valley shaped space

between tongue and teeth

is named as alveolingualalveolingual

sulcussulcus..

6- Floor of the mouth6- Floor of the mouth

TONGUETONGUE



VENTRAL SURFACE OF THE TONGUE

AND THE FLOOR OF THE MOUTH



Its -anterior part is named

as.hard palate.hard palate

- Its posterior part is named

as soft palatesoft palate which ends by

a small fleshy structure named

uvulauvula hanging from its center.

-The junction between hard

and soft palate is called

vibrating linevibrating line

The -soft palate is

sometimesredder than the

.hard palate

7- Roof of the mouth

HARD PALATE

SOFT PALATE

UVULA

vibrating linevibrating line

HARD PALATE



- The end of the

hard palatehard palate is

opposite the third

molars where the

soft palatesoft palate begins.

- There is fat or fat or

salivary glandsalivary gland tissue beneath the

surface tissue of the

hard palate.

HAED PALATE

SOFT PALATE



MORE ABOUT THE ROOF OF

.THE MOUTH

Uvula

CORONAL SECTION OF THE PALATE



MORE ABOUT THE SURFACE FORM

.OF THE ORAL CAVITY

UVULA

TONGUE

PALATE

SALIVARY GLANDS

CHEEK

PALATINE TONSILES

-A

-B

-C

-D

-E

-F



Niagra Falls

THANk YOU



Niagra Falls

? ANY QUESTION

1-Human Dentition Intro

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