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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
8/14/2019 1-Human Dentition Intro
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HUMAN DENTITIONDENTAL ANATOMY
).Prof. Abdelhamied Y. M. Saad, BDS, MS )Egypt, Ph.D. )U.S.A
8/14/2019 1-Human Dentition Intro
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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
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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
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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
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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
8/14/2019 1-Human Dentition Intro
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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
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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
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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
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Maxilla & Mandible
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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
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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
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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
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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.
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- 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
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VENTRAL SURFACE OF THE TONGUE
AND THE FLOOR OF THE MOUTH
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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
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- 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
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MORE ABOUT THE ROOF OF
.THE MOUTH
Uvula
CORONAL SECTION OF THE PALATE
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MORE ABOUT THE SURFACE FORM
.OF THE ORAL CAVITY
UVULA
TONGUE
PALATE
SALIVARY GLANDS
CHEEK
PALATINE TONSILES
-A
-B
-C
-D
-E
-F
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Niagra Falls
THANk YOU