Oral cavity , morphology - PowerPoint Presentation

Slide1

Oral cavity, morphology and histology

Dr Gallatz Katalin

Slide2

PARTS AND WALLS OF THE ORAL CAVITY

FLOOR OF THE ORAL CAVITY – ORAL DIAPHRAGM

HARD AND SOFT PALATE

ISTHMUS OF FAUCES

BLOOD SUPPLY OF THE ORAL CAVITY

Slide3

Parts of

the

oral

cavityVestibule –vestibulum oris outside of the dental archesOral cavity proper inside of the dental arches

Slide4

Borders

of

the

vestibulum

oris :lateral: cheek (bucca) anterior: lips

medial

:

dental

arches

Borders

of

the

oral

caity

proper

:

outside

:

dental

arches

roof

:

palate

floor

:

oral

diaphragm

posterioly

:

isthmus

of

the

fauces

Slide5

Borders

of

the

vestibulum

oris :lateral: cheek (bucca) anterior: lipsmedial

:

dental

arches

Borders

of

the

oral

caity

proper

:

outside

:

dental

arches

roof

:

palate

floor

:

oral

diaphragm

posterioly

:

isthmus

of

the

fauces

Slide6

Floor

of

the

oral

cavity

Slide7

Parts

and

floor

of

the

oral cavity

Slide8

LATERAL LINGUAL SULCUS

B

orders

:

lateral

.: mylohyoid m.medial. Hyoglossus m.superior: sublingual

mucous

membrane

Content

:

-

l

ingual

nerve

-

s

ubmandibular duct- hypoglossal nerve- deep lingual vein

FLOOR OF THE ORAL CAVITY AND LATERAL LINGUAL SULCUS

Slide9

BONES

PALATINE PROCESS OF THE MAXILLA

HORIZONTAL PLATE OF THE PALATINE BONE

SUTURES

MEDIAN AND TRANSVERSE PALATINE SUTURE

OPENINGS

INCISIVE CANAL

GREATER AND LESSER PALATINE FORAMINA

ROOF OF THE ORAL CAVITY - PALATE

Slide10

HARD AND SOFT PALATE

palatine

raphe

:

longitudinal

mucosal

fold

in

the

midline

palatine

rugae

:several (3-7) transverse folds

(

choping

and

grinding

of

foods

,

phonation

,

sucking

)

palatinae foveolae:openings of the ducts of the small salivaryglands

Slide11

BLOOD SUPPLY

-

d

escendending

palatine a. ascending palatine a. nasopalatine a.

INNERVATION:

nasopalatine

n.

greater

palatine

n.

lesser

palatine nerves

Slide12

STRUCTURES OPENING INTO THE ORAL CAVITY:DUCTS OF THE BIG SALIVARY GLANDS: DUCT OF THE PAROTID GLAND

DUCT OF THE

SUBMANDIBULAR GLAND

DUCT OF THE

GLANDULA SUBLINGUAL GLANDDUCTS OF THE SMALL SALIVARY GLANDS: DUCTS OF LINGUAL GLANDS DUCTS OF LABIAL GLANDS DUCTS OF BUCCAL GLANDS DUCTS OF PALATINE GLANDS

Slide13

PAROTID DUCT

-

Runs

paralel

with

the zygomatic arch at the anterior edge of the masseter turn medially and pierces the

buccinator

,

-

Opens

into

the

vestibulum

oris through the the parotid papilla at the level of the apex of

the

root

of

2.upper

molar

teeth

.

Slide14

SUBLINGUAL REGION

frenulum

linguae

,

sublingual

caruncula

sublingual

fold,

fimbriate

fold,

lingual

vein

Slide15

SUBMANDIBULAR DUCT – WHARTON’S DUCT

-

It

runs

in the lateral sulcus of the tongue first between the lingual and hypoglossal nerve, - anteriorly crosses

the

lingual

nerve

and

runs

above

it

, opens through the sublingual caruncula together with the major sublingual duct .

Sublingual caruncula

Slide16

ISTHMUS OF THE FAUCES

Borders

:

superior

:

soft palateinferior: root of the tonquelateral: palatoglossal and

palatopharngeal

arch

POSTERIOR BORDER OF THE ORAL CAVITY

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ARTERIES OF THE HEAD

EXTERNAL CAROTID ARTERY

SUP.THYROID A.

LINGUAL A

.

ASCENDING PHARYNGEAL A.FACIAL A.OCCIPITAL A.MAXILLARY A.SPF. TEMPORAL A.

Slide18

BLOOD SUPPLY OF THE ORAL CAVITY

n

asopalatina

a.

sphenopalatine a.(

a.

max

.)

anterior

palate

descending

palatina

a.

maxillary

a. palateascending palatina a. facial a. palatelingual a. ext

carotid

a.

t

ongue

,

sublingual

region

buccal

a

. maxillary a cheeksup.and inf labial a. facial a. lipsinfraorbital a. maxillary a. upper

teeth

i

nf.alveolar

a.

m

axillary

a.

l

ower

teeth

Slide19

MAXILLARY ARTERY

M

andibular

part:

deep

auricular

a.

ant

.

t

ympanic

a.

i

nf

. alveolaris a. middle meningeal a.Pterygoid part: masseteric a. deep temporal a. pterygoid

arteries

buccal

a.

sup

.,

post.alveolar

br . Pterygopalatine part: infraorbital a. desc.palatina a. sphenopalatine a.

Slide20

BRANCHES OF THE FACIAL ARTERY

-

ascending

palatina a. submental a. glandular arteries

inferior

és

superior

labial

aa

.

angular

a.

Slide21

Veins

of

the

head

and neck

Slide22

Slide23

Slide24

Slide25

ORAL MUCOSALINING MUCOSA

2. MASTICATORY MUCOSA

3. SPECIALISED MUCOSA

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LINING MUCOSA covers the oral

surface of the

lips

,

cheeks, floor of mouth, and the ventral surface of the tongue - stratified squamous non-keratinized epithelium - lamina propria, - tela submucosa (small salivary

glands

:

labial

,

buccal

are

present

)

2.

MASTICATORY MUCOSA

covers the hard palate and gingiva - stratified squamous non-keratinized epithelium (at the tip of interdental papilla of the gingiva it

can

be

keratinized

)

-

lamina

propria

firmly

attaches to the

periosteum of the bones MUCOPERIOSTEUM

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3. SPECIALISED MUCOSAThe dorsal surface and lateral borders of

the tongue

are

covered by a specialised mucous membrane that contains different types of papillas: FILIFORM FUNGIFORM CIRCUMVALLATAE FOLIATAEFoliate and circumvallate papillas have important role in

taste

perception

1.

Tunica

mucosa

:

-

stratified

squamous

non keratinezed epithelium - lamina propria2

.

Aponeurosis

of

the

tongue

3

.

Skeletal

muscles,

glands, adipose tissueLINING MUCOSA

Slide28

Foliate and circumvallate papillas have important

role in

taste

perception

, they contain gustatory receptors – taste buds

Slide29

FRONTAL SECTION

MR

Slide30

X-RAY

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PATHOLOGY

STOMATITIS APHTOSA ACUTE TONSILLITIS

Slide32

CANCER

Leukoplakia

generally refers to a firmly

attached

white patch

on a mucous membrane which is associated with an increased risk of cancer. It usually occurs within the mouth, although sometimes mucosa in other parts of the gastrointestinal tract, urinary tract, or genitals may be affected.[

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Thank

you

for

your

attention

!