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53 Cards in this Set

  • Front
  • Back

CELLULITIS

A diffuse erythematous submucosal or subcutaneous infection .

ABSCESS

A thick - walled containing pus .

" A PHLEGMON "

is the diffuse pus formation without demarcation .

Causes Of Oral Infections I

ı - Odontogenic Causes


Il - Traumatic Causes


III - Chemical Causes -


IV General Systemic Diseases

Odontogenic Causes

1 - Periapical infection from non vital tooth or roots


2- Deep periodontal pockets


3- Pericoronitis


4 - Infected dental cysts


5- Odontogenic tumors

Traumatic Causes

1.use of surgical burs :


2.Pressure type of anesthesia.


3.Compound fracture of the jaw

Chemical Causes

arsenic used for pulp mummification

General Systemic Diseases

1- Blood dyscrasias


2- Uncontrolled diabetes


3- Nutritional disorders


4- Endocrine disturbances


5- Malignancies


6 - Immunological disorders

Fate Of Oral Infections

1.Resolution


2.Fluctuation


3.Extension


4.Chronicity

Propagation Of Dental Infections

1.by direct continuity.


2.Through lymphatic vessels.


3.By the the veins .

diagnosis of abscess formation

1 .Cardinal symptoms of inflammation .


2. Fluctuation & localization .


3. Identification of the causative agent

pericoronitis


definition


type

It is the inflammation of soft tissues covering the crown of partially erupted or unerupted tooth .



It is most common around the mandibular 3rd molars .



1. Infancy & childhood .


2. Young adulthood .


3. Old Age .

Treatment of pericoronitis

conservative


odontectomy


operculectomy

Advantages of removing operculum by electroscalpel :

1. minimal trauma .



2.minimal bleeding during operation.



3.Risk of spread of infection is minimal .



4. minimal post - operative pain & discomfort .

complications & spread the infection may spread to :

Posteriorly



parapharyngeal & spaces Pterygomandibular



Lateral > Para Submasseteric space



Downward Submandibular space

causes of


acute dento alveolar abscess

1- Necrotic pulp of a dead tooth or root .


2- Deep periodontal pockets


3- By blood stream

shows the classic signs of inflammation :

1.Swelling


2.dolor


3.Calor


4.Rubor


5.Functio laesa


6.Fluctuation

Types of Acute Dentoalveolar Abscess

1- Acute dentoalveolar abscess without soft tissue involvement ( Early stage ) .



2- Acute dentoalveolar abscess with soft tissue involvement ( Late stage ) .

natural progression of odontogenic infections etiology

1. Periapical : as a result of pulpal necrosis ( most common ) .



2. Periodontal : as a result of a deep periodontal pocket.



3 - Extension of infection from adjacent infected tooth .



4 - Hematogenous ; i.e. through the blood stream in patients with bacteremia or septicemia .

The location of the infection from a specific tooth is determined by the following 2 major factors :

1- The thickness of the bone overlying the apex of the tooth &



2- The relationship of the site of perforation of the bone to muscle attachments of the parmaxilla & the mandible .

►If the infection has eroded through the labial to the aspect INFERIOR attachment of the buccinator muscle , it will lead to infection that appears as

vestibular abscess

If the infection has eroded SUPERIOR to the attachment of the buccinator muscle it appears as an infection of the

buccal space

Early stage of... acute deno


definition

it is suppurative type of inflammation involving primarily the Atooth & its alveolar bone .

signs and symptoms of acute dento alveolar abscess سؤال سابق

1- Elongation of the tooth.



2- Severe tenderness of the tooth to touch and during mastication .



3 . " throbbing " pain.



4 - general symptoms of inflammation .



5 - Lymphadenitis .

TREATMENT


AIM OF TREATMENT :


of Early stage

1. Draining the mass of pus at the periapiacl tissues .



2. Removal of the cause of infection .



3.Raising body resistance & helping it to overcome the invading organisms .

signs & symptoms Late stage

1- Dull pain :


2 Soft tissue swelling.


3 - Facial cellulitis .


4 - The skin over the region is tender to palpation , tense , hard , red & hot .



5 - General symptoms of inflammation .


6- lymphadenitis .

aims of treatment of early and late stage

1.Evacuation of the Emprisoned pus



2 - Extraction of the causative tooth



3- Adequate antibiotic therapy .

Fascial space Infections


Maxillary Spaces ►


Mandibular spaces

Maxillary Spaces


1- Base of upper lip


2 - canine fossa


3. Buccal space


4.Palatal space


5.Postzygomatic & infratemporal space



Mandibular spaces



1 - Pterygomandibular


2 - Submandibular


3 - Sublingual


4 - Submental


5 - Submasseteric


6 - Parapharyngeal


7 - Parotid

1- Abscess of Base Of Upper Lip


Causes :


clinical signs & symptoms:


D. D

سبب بـ Infection from upper Incisors



1- Edema & cellulitis of the upper lip unilateral bilateral.



2- swelling of the entire lip .



3- Swelling of the side of the nose and lower eyelid




1- Congenital:


3 - hypersenstivity:


2- Traumatic:


4- Benign neoplasms or cysts


canine fossa


caused by

infection from upper canine and premoler

treatment of abscess of the upper lip & canine fossa


+buccal space



+palatal space


+infra temporal space


1 - Incision & drainage :


2 - Removal of the cause :



نفسهم غير


period of drainage ما تفوتش تلاته ايام

3 - Abscess of the Buccal space


Causes


clincal signs

Spread of infection from the upper molars .



1- Moderate swelling of the cheek .


2- ( gum boil ) .



3- Submaxillary and intratemporal spaces may be Affected ,

Palatal space Causes

1- caused from infected lateral incisor because it has a curved root .



2 - Periodontal abscess from a palatal pocket .



3 - Apical abscess from palatal root of multirooted teeth .

4.abscess of infratemporal space


caused by


1 - Pericoronal infection of the mandibular 3rd molar Infection space .



2 - Infection of maxillary teeth buccinator muscle .

Clinical signs


of


infra temporal space

1- Severe pain aggravated by opening duo Involvement of temporalis & medial pterygold muscles .



2- Deviation of the jaw toward the affected side



3.Difficulty in swallowing .



4 - Swelling of the eyelids



5- Trismus.



6- fever malaise



7- Headacke , irritability , vomiting


8 - Neck stiffness

2. submandibular space


caused by

1- Infection from lower molars particularly the 3rd molar and the 2nd molar



2- Fracture of the angle of the mandible .



3- Backward extension from submental space or sublingual space .



4 Lymphatic spread from submandibular lymph nodes .

1.pterygomandibular space


caused by


سؤال سابق

1.infection from lower molar


2.infection from upper molar


3. contaminated needle during IAN B


4.contaminated needle during posterior superior alveolar n injection

3. sublingual space


caused

-Odontogenic infection from


lower incisors , canine or premolars

4 - Submental space


Causes

1-Odontogenic infection from lower anterior and premolars below the myelohyoid muscle .



2-Lymphatic spread from submental lymph nodes .

5-sub masseteric space


caused by


1- Infected lower molar particularly 3rd molar



2- Fracture ramus of the mandible .

5 - Parapharyngeal space


Causes


ممكن سؤال حسب رايي

1- infection around a lower 3d molar ( eg pericoronitis )



2 - Backward sprea submandibular or sublingual space infections .



3 - Posterior spreading of infection from Pterygomandibular space .



4 - Downward spreading of infection from Infratemporal space to Pterygomandibular space to parapharyngeal space .

ludwing's angina


definition


and signs and symptoms


It is a diffuse facial cellulitis of the submental sublingual & submandibular spaces bilaterally .



1.massive hard facial swelling


2.patients has open mouth.


3.tongue is raised from mouth.


4.difficult to speech and saliva run from mouth


5.general sever symptoms


6.difficult to respiration


7.dehydration&tired


8.suffocation and death may occur.

Treatment


ludwing s angina

1- Hospitalization:


a - Dehydration control


b- Massive antibiotics


c - Tracheostomy


d - Extraoral hot application



2- Incision & Drainage:



3- Postoperative care:



osteomylitis


definition

It is the inflammation of bone produced by pyogenic organisms



It involves the cancellous bone ,


bone marrow


blood vessels & the fibroblastic tissue to the periosteum


the cortical bone

Etiology of osteomylitis

1 - Odontogenic causes


2- Traumatic causes


3- Chemical causes


4- Following radiation therapy


5 - Haematogenous infections

1- Odontogenic causes


of osteomylitis

1.Periapical infection >


2.Pericoronal infection


3.Periodontal infection


4.Infection from odontogenic cyst or tumors


5.Residual infection


6.Dry socket

Osteomyelitis It is more common in the mandible then in maxilla because

1- Less blood supply



2.Dense cortical plate & wide spongiosa



3.More exposed to trauma

- The sequestrum of osteomyelitis are characterized by :

Hard


Rough


Porous


Lighter in color


Due to the deposition of calcium

treatment of osteomylitis

1- Massive effective antibiotics


2- Complete bed rest


3- General supportive therapy


4- Incision & drainage


5- Sequestrectomy.


6- Saucerization


7- Decorticetomy


8- Remodelling of the jaw bones

Garre's Osteomyelitis


definition


treatment

It is a peripheral periosteal bone apposition caused by mild irritation and infection .



remove caustive factor


extraction ir RCT

treatment of


1.chronic periapical abscess


2.periapical granuloma

RCT منغير apicectomy


extraction of tooth



RCT مع apicectomy and curettageextraction of tooth

apicectomy


indication


contraindications

it is surgical removal Of pathologically the root apex and tight closure root canal or canals .



1- Periapical pathological lesion .


2- Perforations of root apex


3- Breakage of a file in apical area


4- Fracture of root apex



1- Deep periodontal pockets and


2.extensive mobility


3.- Approximation of the apex to the maxillary sinus or inferior alveolar canal


4- Patient with a systemic disease

Odontogenic Infections Of The Maxillary Sinus

1- Maxillary Sinusitis


a- Acute b- Chronic


2- Mucus - Retention Phenomenon


3- Oroantral Communications


4- Neoplastic & Cystic lesions