Soft Tissue Injuries

Question 1

What are abrasions and how are they treated?

Answer 1

Caused by friction between an object and the surface of the skin

Treated by cleaning, sometimes scrubbing, then apply antibiotic ointment

Question 2

What is a contusion?

Answer 2

Bruise

Question 3

Why should you be cautious with pts who bruise easily?

Answer 3

It could be an indication of a bleeding problem. If possible, let them off coumadin and/or give them vitamin K

Question 4

How do you repair a laceration?

Answer 4

Cleansing

Debridement

Hemostasis (you can give them LA for the epinephrine)

Closure (make sure you line up the vermillion border first)

Question 5

If a pt comes in with a dentoalveolar injury, what should you ask?

Answer 5

Ask them if they lost consciousness or were nauseous. If yes, send them to the hospital for the evaluation of a concussion.

Question 6

If a pt lost a tooth and has a lot of pain on one side while opening or closing, what are two likely causes?

Answer 6

Joint fracture

Hemothrosis - bleeding of the retrodiscal tissue

Question 7

Teeth are not treatable when the crack is…

Answer 7

Below the crest of the bone

Question 8

What is avulsion?

Answer 8

When the tooth is knocked out completely

Question 9

What are 5 factors to consider before reimplanting an avulsed tooth?

Answer 9

1) the avulsed tooth should have no advanced periodontal disease
2) the alveolar socket should be reasonably intact to provide a seat for the avulsed tooth
3) no orthodontic contraindications such as significant crowding of teeth should exist
4) the extra-alveolar period should be considered; periods exceeding 2 hours are usually associated with poor results. If the tooth is replanted within the first 30 minutes, excellent results can be expected.
5) the stage of root development should be evaluated. Survival of the pulp is possible in teeth with incomplete root formation if replantation is accomplished within 2 hours after injury.

Question 10

What can happen to roots that are reimplanted?

Answer 10

They may become ankylosed. The roots become like bone (constantly remodeled). Eventually the roots are eaten away and the crown becomes loose.

Question 11

If you don’t reimplant a tooth within ___ hours you should expect poor results.

If you reimplant a tooth within ___ minutes you should expect excellent results

Answer 11

2

30

Question 12

In the case of reimplanted or significantly displaced teeth with closed apical foramina, root canal treatment should be instituted about ___ weeks after initial stabilization

Answer 12

Two

Question 13

____ root resorption can occur to reimplanted teeth. Why does this occur?

Answer 13

External

Without the PDL, you have bone against cementum. The bone treats the root like bone and remodels it.