Exercises for Part 3
1. A fracture in which one side of the bone is broken and the other side is bent is a _____.
- a. Compound-comminuted fracture.
- b. Simple fracture.
- c. Greenstick fracture.
- d. Multiple fracture.
2. A fracture that occurs in a direction that does not allow the pull of the muscles on the fractured segments to displace the segments is _____.
- a. A favorable fracture.
- b. An unfavorable fracture.
3. Which of the following signs and symptoms of fractures is NOT a characteristic of mandibular fractures?
- a. Paresthesia.
- b. Ecchymosis.
- c. Malocclusion.
- d. Step defect.
- e. Nose bleed.
Special instructions for exercises 4 through 10. Match the classification (name) of the fracture in Column B to its description in Column A.
|Column A ||Column B |
|___ 4. Two or more fractures occurring in the same or different bones || |
a. Simple fracture
|___ 5. The hard cortical bone of one fragment is driven into the softer cancellous bone of another fragment || |
b. Compound fracture
|___ 6. The bone is broken and splintered into three or more fragments or is crushed || |
c. Comminuted fracture
|___ 7. A break in the bone that does not produce an open wound in the skin || |
d. Depressed fracture
|___ 8. A break without external violence at an area of the bone that has been weakened by a local disease. || |
e. Impacted fracture
|___ 9. The fractured part is driven below the normal level of the bone || |
f. Pathologic fracture
|___ 10. A break in the bone with an external wound extending to the bone. || |
g. Multiple fracture
11. Fixation is accomplished by drilling holes on either side of the fracture and using wire or metal plates to hold the segments in close approximation in _____.
- a. a closed reduction
- b. an opened reduction
12. It is necessary to immobilize a fracture of the jaw for_____ to_____ weeks until a union between the bony parts takes place.
13. When there is post-operative intermaxillary fixation, a dental liquid or soft diet is used that provides the nutrients necessary for the healing of fractured bones. This diet is a:
- a. High protein, high carbohydrate diet.
- b. Low protein, low carbohydrate diet.
- c. Low protein, high carbohydrate diet.
- d. High protein, low carbohydrate diet.
14. A dental specialist is called to assist a person who has a dislocated jaw. What action should he/she take? Immediately look for a_____ and_____ person (such as a_____ ) to restore the joint to its normal position.
15. When a trained person is trying to restore a dislocated jaw to its normal position, it is essential to prevent the_____ from being traumatically fractured.
16. The figure below illustrates:
- a. Fractures of the edentulous mandible.
- b. A fracture of the subcondylar area of the mandible.
- c. A fracture of the body of the mandible.
- d. Fractures of the body and the angle of the opposite side.
- e. Fractures of the alveolar process.
17. The figure below illustrates a:
- a. Pyramidal fracture of the maxilla.
- b. Transverse fracture of the maxilla.
- c. Fracture of the maxillary alveolar process.
- d. Cranio-facial disjunction fracture.
- e. Fracture of the maxilla.
Solutions to Exercises for Part 3
- 1. c
- 2. a
- 3. e
- 4. g
- 5. e
- 6. c
- 7. a
- 8. f
- 9. d
- 10. b
- 11. b
- 12. six; eight
- 13. a
- 14. trained; experienced; dental officer
- 15. anterior teeth
- 16. d
- 17. b