Fascia & Facial Spaces & Infections Flashcards
Fascia surrounds what?
Organs and tissues
What kind of tissue is fascia and fascial spaces?
Deep or superficial to the skin?
Fibrous connective tissue
Deep
Superficial fascia:
Location:
Function:
Compostition:
Just deep to skin
Allows skin to move independent of deeper structures
Varying thickness of irregularly arranges CT and fat
Deep fascia:
Location:
Function:
Composition:
Surrounds bones, muscles, nerves, and vessels.
Protection
Dense, inelastic, fibrous tissue
Deep fascia of the face
Temporal:
Masseteric parotid
Pterygoid
Covers temporal is muscle to zygomatic arch
Masseter muscle and parotid gland
Medial surface of medial Pterygoid
Deep cervical fasciae: investing and vertebral fascia
Continuous with…
Encloses..
Encases..
Vertebrae..
Masseteric- parotid fascia
Submandibular and parotid glands
SCM and trapezius
Encloses vertebrae, spinal cord and associated muscles
Deep cervical-carotid sheath and visceral fascia:
Surrounds:
Cranial:
Visceral trachea:
Carotids and SCM
CN 10
Esophagus and thyroid gland
Fascial spaces
Definition:
Necessity:
Potential spaces between fascial layers (loose CT)
Understand the spread of infection and complications with local anesthetics
Maxillary Vestibular Space
2 pts
- Medial to Buccinator
- Lateral to oral mucosa
*lodged in mucosa
Ex:more in dogs
Mandibular Vestibular Space
2 pts
- Medial to Buccinator
- Lateral to Oral Mucosa
*communicates with body of Mandibular space
Canine Space
3 pts
- Deep to skin, zygomatic us minor and Levantine labii superioris
- Canine fossa of maxilla
- Can swell eye enough to close it
Buccal Space
2 pts
- Lateral to Buccinator
- Medial and Anterior to Masseter
*communicates with Posterior teeth both maxillary and Mandibular
Parotid Space (around parotid) (2 pts)
- Envelopes the parotid gland
2. Also contains external carotid retromandibular vein and CN 7
Mandibular Body Space
3 pts
- Encases mandible from symphysis to anterior edge of medial pterygoid and masseter
- Communicates with many other spaces: vestibular space, Buccal, submental, sublingual, submandibular
- Communication easy once periosteum breachea.
Submental space
2 pts
- Mylohyoid (sup to submental space)
2. Anterior bellies of digastric superficial cervical fascia
Submandibular space
3pts
- Mylohyoid (medial and inferior)
- Mandible
- Lateral and posterior to submental space
Sublingual space
3 pts
- Mylohyoid
- Mandible
- Oral mucosa and tongue
*Ludwigs angina- closes off airway
Infectious process
3 pts
- Virulence of the organism
- Resistance of the host
- Dose
*plus a few more factors
Dental infections
3 dental infections
- Abscess
- Cellulitis
- Osteomyelitis
Signs of infection
Inflammation: HERP Heat Edema Redness Pain
Abscess infection
3 pts
- Local area of trapped pathogens
- Death of tissue-suppuration or exudate(pus)
- Fistula
- body tries to fight off, becomes pimple looking on guns, kills tissues and nerve and can go through bone
- least worse out of 3
Cellulitis infection
3 pts
- Diffuse edema from inflammation
- Origin is an infection
- Generally more dangerous than an abscess
(2nd worst out of dental infection)
*ludwigs angina is a type of cellulitis
*multiple spaces involved
*caused by underlying health or something uncontrolled.
Osteomyelitis infection
3 pts
- An inflammation of bone marrow
- May create sequestration of bone
- More common in mandible, but can happy anywhere in mouth
*worst out of the 3 dental infections
The spread of dental infections can go into…
4
Sinus
Blood stream
Lymphatics
Spaces
