Odontogenic Dz of Mx sinus Flashcards
What are the four pair of paranasal sinuses?
- Maxillary
- Frontal
- Ethmoidal
- Sphenoidal
Into what nasal meatus does the maxillary sinus drain?
Middle meatus
What shape does the maxillary sinus make at birth vs. in adulthood?
Tubular at birth
Pyramidal as an adult
What is the posterior/apex border of the maxillary sinus?
zygomatic process of maxilla
What is the anterior border of the maxillary sinus?
Nasal surface of maxilla
What is the superior border of the maxillary sinus?
orbital surface of the maxilla
What is the inferior border of the maxillary sinus?
alveolar process of maxilla
What four arteries supply the maxillary sinus?
Facial, maxillary, infra-orbital, and greater palatine
What is the venous drainage of the maxilla?
Anteriorly = sphenopalatine vein
Posteriorly = pterygoid veins
(plexus is posterior and communicates with cavernous sinus)
What nerves innervate the maxilla?
ASA, MSA, PSA, infra-orbital, and greater palatine
What kind of epithelium surrounds the space of the maxillary sinus?
ciliated columnar
Which of these are functions of the mx sinus?
a. warming inspired air
b. resonance of voice
c. produce bacterial lysozyme
d. store mucus
a. warming inspired air
b. resonance of voice
c. produce bacterial lysozyme
What are some techniques to examine the mx sinus?
palpation, percussion, and transillumination, x-ray, CT, ultrasound
Agenesis, aplasia/hypoplasia, and supernumery mx sinuses all constitute what kind of pathologies?
Developmental anomalies
When the inflammation develops in the sinus either due to infection or allergy it is termed ________.
sinusitis
What is the most common disease involving the maxillary sinus?
Sinusitis
Sinusitis lasting between 3 weeks and 3 months is considered what?
Subacute sinusitis
What are two frequent etiologic viral causes of sinusitis?
Rhinovirus
Influenza virus
Diagnose this pt.
Complaints of pressure and heaviness on left side, pain on left side of face that worsens upon bending position, and frequent headaches.
Acute sinusitis
Ephedrine sulphate, phenylephrine, and zylometazoline are examples of what kind of sinusitis treatment?
nasal decongestants
What antibiotics could you prescribe for a non-odontogenic related sinusitis?
Bactrim, augmentin, azithromycin, or cefdinir
What antibiotics could you prescribe for an odontogenic related sinusitis?
Amoxicilin, clindamycin, or metronidazole
Invasion of the maxillary sinus and establishment of direct communication with the oral cavity is referred to as an _____________.
oro-antral fistula
What type of epithelium lines a fistula?
stratified squamous
