Oral Surgery Flashcards
Why should all extractions be atraumatic?
To prevent the thin buccal plates from fracturing, which would result in necrosis and bone resorption.
Define atraumatic tooth extraction.
Extracting a tooth where you preserve as much hard and soft tissues as possible.
What are the principles of exodontia?
expansion of the bony socket.
Separation of the attachment of PDL.
Separation of the attachment of gingival soft tissues.
Alveolar ridge resorption - which plate undergoes more resorption?
What impacts ridge resorption in people?
Buccal plate more than lingual.
Ridge resorption impacted by meds and healing process in diff people.
What are the stages of post-extraction healing? How long does it take?
Describe each stage in detail.
6-8 weeks completely heal.
Four stages - angiogenesis(24-48 hours), bone formation (1 week), bone growth (20 days) and reorganisation of bone (8 weeks).
So you bleed into the socket, platelets aggregate, clot forms and forms a fibrin meshwork (with leukocytes). Then inflammatory cells accumulate and cause formation of new tissue. Eventually, it starts to heal but it heals from base of the socket upwards - so the last area to heal is the surface of the mucosa.
Define trauma
Natural assault to the body.
Why must forceps be applied correctly?
To decrease risk of fracture of the buccal plate.
How to extract tooth?
Severe connective tissue fibres
Minimise soft tissue reflection
What must you check before using luxator or periotome?
Check to see it’s sharp
What are luxators and what’s the method to use?
Can be curved or straight.
Use angled for posterior teeth and 5mm.
Most teeth start with 3mm. Check it’s sharp and slide down long axis of the tooth towards apex. Apply light apical pressure and gently twist and push to severe PDL fibres. This causes mobility and opens the socket wider to preserve bone and allow forceps to be used to deliver the tooth with more ease.
What are elevators and how are they used?
Give examples.
Warwick James, Cryers, Couplands.
They are used horizontally rotating around the fulcrum, or along the long axis of the tooth like a luxator.
Wheel and axle, wedge or lever technique used.
If doing maxillary sinus surgery or something what should you be careful of?
Intraosseous arteries
