Possible exam questions for midterm

Question 1

what are 3 ways to tx skeletal malocclusion?

Answer 1

1. growth redirection
2. ortho camouflage
3. orthognathic surgery

Question 2

if someone has a skeletal malocclusion, would it be a good idea to try ortho for a while to correct it and then try jaw surgery if it doesn’t work?

Answer 2

NO!

why? because ortho movements will be entirely opposite depending on if they want to do surgery or not

Question 3

TADs are screwed into bone that can get better force on teeth. does that widen or narrow the envelope of discrepancy?

Answer 3

widen

Question 4

what is one measurement that has to be done during surgery?

Answer 4

have to measure from some fixed point to upper incisor so all the vertical decision making is done at the incisor at rest

Question 5

what is the advantage of an internal fixation with BSSO or lefort I?

Answer 5

allows you to unwire a patient’s teeth for a few days after surgery

the wire placed initially is so patients don’t revert to old bite due to muscle memory

Question 6

can you rely on pulp testing to determine if a tooth is necrotic in a patient that has a bunch of plates in upper jaw or have had upper jaw surgery?

Answer 6

no

Question 7

what makes a cleft patient different?

Answer 7

1. large maxillary AP deficiencies
2. scar tissue
3. VP incompetence
4. vascular compromise
5. palatal and nasolabial fistulas

Question 8

when making large AP moves, how might you want to approach it?

Answer 8

want to do it slowly

Question 9

why don’t OS wire or rubber band patient’s teeth together anymore after orthognathic surgery?

Answer 9

to allow the bone to heal and it’ll take a couple days

OS put people on intermaxillary fixation (wiring of teeth together) after surgery because of muscle memory

Question 10

floor of mouth hematoma is pathognomic for what?

Answer 10

symphyseal fracture (symphyasis of mandible fracture)

Question 11

what type of radiograph is the golden standard for trauma patients?

Answer 11

CT scans

Question 12

which type of dentoalveolar injury has the worst prognosis? 2nd worst?

Answer 12

intrusion then lateral displacement

Question 13

how long can you keep a viable tooth in milk for?

Answer 13

2-6 hours

Question 14

how long can you keep a viable tooth in viaspan for?

Answer 14

1 week

Question 15

how long can you keep a viable tooth in Hank’s solution for?

Answer 15

24 hours

Question 16

what is the best tx for avulsed tooth?

Answer 16

to reimplant

Question 17

how long should you stabilize avulsed tooth?

Answer 17

1-2 weeks

Question 18

3 layers of soft tissues are cut… mucosa, muscle, and epithelium. when you close the laceration, what is the best place/landmark to put it back?

Answer 18

start with the vermillion border

Question 19

what is the most common bacteria found in any bites?

Answer 19

Pasteurella multocida (gram - rod)