• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/24

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

24 Cards in this Set

  • Front
  • Back
What are the most causative organisms of acute sinusitis?
Pneumococci & Streptococci
What are causes of chronic sinusitis?
1) Prolonged Acute Sinusitis
2) Dental Abscesses
3) Virulent organism with low resistance
4) Foreign body dislodgement or trauma
What are two symptoms that help distinguish chronic sinusitis from acute sinusitis?
1) Fatigue
2) Anosmia/Hyposmia (decreased sense of smell)
What is the mechanism of bone graft healing?
1. Hematoma formation (release of cytokines and growth factors)
2. Inflammation (development of fibrovascular tissue)
3. Vascular ingrowth (often extending Haversian canals)
4. Focal osteoclastic resorption of graft
5. Intramembranous and/or endochondral bone formation on graft surfaces
What is the difference between cortical bone grafts and cancellous bone grafts?
Cortical Bone Grafts: Less biologically active, Provides more structural support (span defects)
Cancellous Bone Grafts: Greatest concentration of Osteogenic Cells, faster revascularization, osteoinductive
What are the various methods of processing allografts/xenografts?
1. Boiling
2. Deproteinizing
3. Freezing (MOST)
4. Freeze drying (MOST)
5. Irradiating the bone graft
What does Deep freezing and freeze drying allografts/xenografts do?
Destroy both subcellular particles and viability. Decreases the bone graft immunizing capacit, yet leaves the matrix intact for future transplantation,
What forms are Bone Allografts available in?
1. Fresh
2. Fresh Frozen
3. Freeze Dried
Why are fresh bone allografts not ideal?
Highly Antigenic
Limited time to test for immunogenicity or diseases
What are some properties of Fresh Frozen Bone Allografts?
Less antigenic
Time to test for diseases
FDA regulated
PRESERVES BIOMECHANICAL PROPERTIES (good for structural grafts)
What are some properties of Freeze Dried Bone Allografts?
Can be Stored at Room Temperature up to 5 Years
Even less antigenic
Time to test for diseases
What are some types of bone substitutes?
Calcium phosphate
Calcium sulfate
Collagen based matrices
Demineralized bone matrix
Hydroxyapatite
Tricalcium phosphate
Osteoinductive proteins
What are indications for bone grafting in oral and maxillofacial surgery?
Trauma
Alveolar cleft
Orthognathic surgery
Implant dentistry
Pre-prosthetic surgery
What are the 4 aspects of the clinical exam?
1) Inspection
2) Palpation
3) Percussion
4) Auscultation
What is the definition of a biopsy?
Removal of tissue from a living individual for diagnositc examination.
What are indications for biopsy?
1. Any lesion that persists for More Than 2 Weeks with no apparent etiological basis
2. Any inflammatory lesion that does not respond to local treatment after 10 to 14 days
3. Persistent hyperkeratosis in surface tissue
4. persistent swelling
5. lesion interferes with local function
6. Bone lesions not specifically identified by clinical and radiographic finding
7. Any lesion that has the characteristics of malignancy
What are the different types of biopsy?
1. Excisional
2. Incisional
3. Punch biopsy
4. Fine needle
5. Aspiration
6. Bone
7. Exfoliative cytology
What is an INcisional biopsy?
you remove a chunk of the lesion for biopsy
What is an EXcisional biopsy?
small lesions, remove whole lesion and surrounding tissue.
What is a Fine-Needle Biopsy?
Used to biopsy deep seated lesions (i.e. sucking the core of the parotid gland with a needle)
When should Aspiration biopsy be carried out?
On all lesions thought to contain fluid or any intra-osseous lesion before surgical exploration.
What do you do with the specimen you just biopsied?
Immediately place in 10% formalin solution that is at least 20x the volume of surgical specimen
Where are there no salivary glands in the mouth?
1) Anterior Hard palate
2) Attached gingiva
3) Dorsal surface of Ant 1/3 of tongue
What salivary duct is most common to have a stone (men)?
Submandibular (wharton's)