1. ORAL AND MAXILLOFACIAL SURGERY
د. باسم الاعسم

2. Pyogenic infection of the soft tissues

3. In relation to the upper jaw
Within the lip
Within the canine fossa
Palatal subperiosteal interval
Maxillary antrum
Infratemporal fossa space
Subtemporalis muscle interval

4. The upper lip
Surgical anatomy
Signs and symptoms
Treatment

5. Differential diagnosis
Trauma: Post-traumatic oedema will start to subside after 48 hours where as the physical signs will worsen if infection is present.
Hypersensitivity reaction: Allergic swelling result from contact with a substance as a lipstick or toothpaste or arise as a feature of angioedema. The enlarged lip is soft and non-tender and will reduce in size with antihistamines.
Oedematous swelling: There are uncommon causes of oedematous swelling as Merkerson-Rosenthal syndrome which include a swollen lip, fissure tongue, and facial palsy. Biopsy of the lip will reveal non-caseating Langhan's giant cell granuloms, if associated with neuropathy are likely to be sarcoid, but if associated with granulomaous bowel disease is Crohn's disease.
Cysts: As odontogenic cysts or nasopalatine cyst, and nasolabial cyst.
Neoplasms: Pleomormphic adenoma, muco-epidermoid carcinoma.

6. The canine fossa
Surgical anatomy

7. Signs and symptoms
Treatment

8. Differential diagnosis
Carbuncle of the skin
Acute maxillary sinusitis: the oedema in the infraorbital margin and lower eyelid.
Acute ethmoidal sinusitis swelling to the upper and lower eyelids and may extend to orbital cellulites.
Acute frontal sinusitis swelling only upper eyelid.
Acute nasolcarimal dacryocsititis can produce swelling below the medial canthus of the eye.

9. Abscess involving the upper molar teeth

10. Subperiosteal abscess in the palate
Surgical anatomy

11. Signs and symptoms

12. Treatment

13. Differential diagnosis
Infected dental cysts
Cystic pleomorphic adenoma or muco-epidermoid carcinoma
Carcinoma from maxillary sinus
Malignant lymphoma

14. Treatment Periapical abscesses in relation to the maxillary sinus
Surgical anatomy
Radiology
Treatment

15. The infratemporal fossa
Surgical anatomy

16. Signs and symptoms

17. Treatment

18. Cavernous sinus thrombophlebitis

20. Signs and symptoms

21. Treatment