Blood Supply of the um

8/6/2019 Blood Supply of the um

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Al Quds UniversityFaculty of Dentistry

Periodontics Lab.

PeriodontiumBlood Supply of the

Prepared by : Haya Khalili

Spring 2011


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The Vasculature of any living organ consists of

Arterial blood supply and Venous drainage .

We should note that the veins accompany the

arteries in their path.

The periodontal vessels follow the nerve in

their supply.


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The Periodontium takes its arterial blood

supply from branches of the External Carotid

Artery.

The venous drainage through the Internal

Jugular Vein and the External Jugular Vein.


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The External Carotid Artery begins oppositethe upper border of the thyroid cartilage, and,taking a slightly curved course, passes upward

and forward, and then inclines backward tothe space behind the neck of the mandible,where it divides into the Superficial Temporaland Internal Maxillary arteries. It rapidly

diminishes in size in its course up the neck,owing to the number and large size of thebranches given off from it.


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Palataly:

The posterior aspect of the periodontium (

along the levels of the molar and premolarteeth) is supplied mainly by the Greater

Palatine Artery, a branch of the Decending

palatine Artery, which is a branch of the third

part of the Maxillary artery (pterygopalatine).


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The anterior aspect of the periodontium (at

the level of the anterior teeth , from canine to

canine) is supplies by the Nasopalatine (

Sphenopalatine ) Artery which is a branch of

the third part of the Maxillary Artery, and

some anastomoses from the Greater Palatine

Artery.


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Buccaly:

The periodontium at the level of the molar

and premolar teeth is supplied by thePosterior Superior Alveolar Artery which is a

branch of the third part of the Maxillary

Artery.


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At the level of the anterior teeth ( canines and

incisors) the blood supply is gained from the

Infraorbital Artery, a branch of the third part

of the Maxillary Artery.

This artery gives off the Anterior Superior

Alveolar Artery.


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Buccaly:

The periodontium at the level of the posterior

teeth is supplied by the Inferior AlveolarArtery- a branch of the first part of the

Maxillary Artery ( Mandibular).

Also it is provided by the Buccal Artery, which

is a branch of the second part of the Maxillary

Artery (Pterygoid).


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At the level of the anterior teeth the blood

supply comes from the Mental Artery, which is

a branch of the Inferior Alveolar Artery.

Some branches of the Facial Artery

(Submental and Inferior Labial) has

anastomosis with the Mental Artery and may

play part in the support.


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Lingually:

The Lingual Artery a branch of the Inferior

Alveolar Artery. The Sublingual artery a branch of the

External Carotid Artery.


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This figure shows the

anastomosis (arrow)

between the facialartery (a.f) and the

blood vessels of the

mandible.


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The gingiva receives its bloodsupply mainly throughsupraperiosteal bloodvessels, which are terminalbranches of the:

Sublingual artery (a.s)

The Mental artery (a.m) The Buccal artery (a.b)

The Facial artery (a.f)

The Greater palatineartery(a.p)

The Infraorbital artery (a.i) And the Posterior superior

dental artery (a.ap).

a.i


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This figure depicts the course ofthe greater palatine artery ( a.p)

in a specimen of a monkey whichwas perfused with plastic,consequently , the soft tissuedissolved.

The greater palatine artery (a.p) ,which is a terminal branch of the

ascending palatine artery ( fromthe maxillary, internalmaxillary, artery), runs throughthe greater palatine canal (arrow)to the palate.

As this artery runs in a frontaldirection it puts out brancheswhich supply the gingiva and themasticatory mucosa of thepalate.


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Note that the free

gingiva receives its

blood supply from :

1.Supraperiosteal blood

vessels .

2.The blood vessels of

the periodontal

ligament.

3.The blood vessels of

the alveolar bone.


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The Maxillary Vein is formed in the Infratemporalfossa.

It joins the Superficial Temporal vein to form theRetromandibular vein.

When the Retromandibular vein leaves theparotid gland, it divides into anterior branchwhich joins the Facial vein, and a posteriorbranch which joins the Posterior Auricular vein to

form the External Jugular vein .The Lingual vein drains back to the Internal

Jugular vein.


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Blood Supply of the um