Oral Surgery Flashcards
When is exodontics indicated ?
- retained deciduous teeth
- severe periodontal disease
- non-vital teeth or fractured crown with root exposure
- teeth undergoing resorption
What is meant by dilaceration?
Curved root tip
What is meant by hypercementation
Expansion of the apical portion of the root
For single rooted tooth extraction, how do you compress the sides?
Compress the sides with your finger to collapse the alveolus
In which two cases can retained root tips be left?
Type II and Type III tooth resorption
What is meant by ‘atomization’
- ankylosed roots in which a dental bur is used to drill out remaining root tip
A small root tip can cause or worsen gingivostomatitis
TRUTH
Dental radiography is mandated in some state. T/F
Truth
Retained root tips can serve as a nidus for periapical inflammation.
TRUE
How do you extract multi-rooted teeth?
Same as a single root except:
- section the tooth at the furcation of roots
- elevate and then remove each root segment individually
Canine Tooth extraction - surgical extraction is performed unless tooth is very mobile. T/F
TRUE
What should you use to incise epithelial attachment?
15c blade
Where should an incision be placed for canine root extraction?
Incision begins in the diastema - NOT at the edge of gingival sulcus - in areas where diastema is small, incision is closer to adjacent tooth
What is an important landmark if removing the entire lateral alveolar bone ?
Apex of the root
What type of suture should you use when suturing gingiva ?
Absorbable 3-0 or 5-0 suture
- Must be very accurate in placing suture in the attached
What type of suture should you use when suturing gingiva ?
Absorbable 3-0 or 5-0 suture
- Must be very accurate in placing suture in the attached gingiva
- sutures must be placed every 2-4mm
What do you need to do to take care of gingival flaps after surgery?
Soft food ( 2 weeks)
- Nothing with a CRUNCH for 10-14 days
- No chew toys or hard treats for 2 weeks
What can cause an oronasal fistula ?
- dental disease and extractions
- pressure necrosis from foreign body
- complication of surgery, radiation therapy and hyperthermia therapy
- Trauma - electrical cord burns, bite wounds and gunshot wounds, blunt trauma to the head
What can cause an oronasal fistula ?
- dental disease and extractions
- pressure necrosis from foreign body
- complication of surgery, radiation therapy and hyperthermia therapy
- Trauma - electrical cord burns, bite wounds and gunshot wounds, blunt trauma to the head
What is the most common cause of electrical burns ?
Chewing electrical cords
What is the most common cause of electrical burns ?
Chewing electrical cords
What are the clinical signs of oronasal fistula ?
Nasal discharge
Sneezing
Aspiration Pneumoniae
How do you repair an oronasal fistula ?
- avoid tension on close (tension = failure)
- two layer technique
continuity of nasal and oral mucosa is restored –> suture lines are off set - single flap technique
*position suture line over supported tissue
When is a single flap techhnique indicated ?
- Acute (non-healed ) fistulas
* Defects are too large to allow a two layer closure
When is a Double flap technique indicated ?
- Used for congenital defects and chronic fistulas where the oral mucoperiosteum has healed to nasal mucosa
- The hinge flap receives its blood supply from the nasal mucosa so elevation of this flap towards the fistula must be done carefully to avoid damaging the blood supply
What are the 2 intraoral salvage procedures?
- acrylic appliances
2. nasal septum button
If the is hard palate fracture, what are the treatment options ?
- conservative management
- suture
- acrylic splint between canine teeth and suture
- last resort - pin and Figure of 8 wire and suture
