Mosby Periodicals Home Search User
Pref		 Help Logout
AJODO Home Table of
Contents 		All Issues Order About this
Journal 		<<
Issue 		>>
Issue

June 2000 • Volume 117 • Number 6
• Previous article in Issue
• Next article in Issue
AAO Continuing Education

University of Illinois at Chicago

College of Dentistry

CE Editor: Zane Muhl, Dr.

Earn 3 Hours of CE Credit

Instructions: To receive 3 hours of CE credit, please answer the following questions, complete the registration form and submit the form by mail or fax, with your payment of $25, to:

AAO Continuing Education Program

UIC College of Dentistry (MC 621)

801 S. Paulina Street

Chicago, IL 60612-7211

Fax: (312) 413-0783

Fax submissions accepted with credit card payment only.

The return form should be received by our office before the deadline of July 20, 2000. If you have at least 12 correct answers, verification of 3 hours credit will be sent to you.

For information,

The UIC College of Dentistry is a Recognized Provider, ADA•CERP #01294033.

Learning Objectives

After completing this course, the participant will be able to:
  1. Discuss the relationship between dental age and maxillary canine displacement.
  2. Describe the genetics of tooth agenesis.
  3. Discuss the relationship between lateral arch length and dental caries.
  4. Evaluate the effect of mandibular advancement surgery in Class II patients.
Article 1. Dental age in maxillary canine ectopia. by Adrian Becker and Stella Chaushu

1. Which hypothesis was this study designed to test?
  1. Dental age is closely correlated with chronologic age.
  2. Palatally displaced canines are related to retarded development of permanent teeth.
  3. Small lateral incisors cause impacted maxillary canines.
  4. There is a familial trend for palatally displaced canines.


2. How great was the difference between chronologic age and dental age in the group with palatally displaced canines?
  1. It ranged from –2.5 to 0.5 years.
  2. It ranged from –2.0 to 3.0 years.
  3. It ranged from 9.0 to 15.0 years.
  4. There was no difference.


3. How did the 3 groups compare?
  1. Dental age did not differ among the 3 groups.
  2. Dental age was retarded for palatally displaced canines and advanced for buccally displaced canines.
  3. Dental age was significantly advanced for buccally displaced canines compared with the other 2 groups.
  4. Dental age was significantly retarded for palatally displaced canines compared with the other 2 groups.


4. In some individuals, palatal displacement of maxillary canines may be hereditary. The timing of prophylactic extraction of primary canines should be based on dental age.
  1. The first statement is true; the second is false.
  2. The first statement is false; the second is true.
  3. Both statements are true.
  4. Both statements are false.


Article 2. The genetics of human tooth agenesis: New discoveries for understanding dental anomalies. by Heleni Vastardis

5. Which term best describes aberrations in the number, size, and shape of teeth, and which includes abnormalities in the overall rate of development and time of eruption?
  1. Anodontia
  2. Congenitally missing teeth
  3. Hypodontia
  4. Oligodontia


6. What is the prevalence of severe tooth agenesis in the general population?
  1. 0.25%
  2. 0.5% to 0.9%
  3. 1.6% to 9.6%
  4. 20%


7. What is an important implication of tooth development?
  1. All teeth are equally likely to fail to develop normally.
  2. Disturbances of the embryonic jaw mesenchyme are often revealed predominately by their effects on the teeth.
  3. Tooth agenesis causes developmental jaw defects.
  4. Tooth development predicts body growth.


8. How do researchers begin to identify the underlying cause of familial tooth agenesis?
  1. Choose a genetic model to determine the diagnosis.
  2. Clone and sequence the DNA of unrelated individuals with missing teeth.
  3. Examine large families to locate a defective gene by means of genetic linkage studies.
  4. Study nucleotide sequences from the human genome project.


Article 3. Difference in dental lateral arch length between 9-year-olds born in the 1960s and 1980s. by Rune Lindsten, Björn Ögaard, and Erik Larsson

9. How was the canine and premolar space requirement determined?
  1. Assessment of caries in the second primary molars
  2. Calculation based on the measurements of an upper and lower lateral incisor and a lower first molar
  3. Intraoral measurement of relevant tooth widths
  4. Measurement of canines and premolars on dental x-rays


10. What was the difference between the existing lateral space and the space requirement in the lower jaw?
  1. For the 1960s groups, it was 1.05 mm.
  2. For the 1960s groups, it was 4.41 mm.
  3. For the 1980s groups, it was 2.11 mm.
  4. For the 1980s groups, it was 4.41 mm.


11. In the 1960s groups, the majority of primary second molars showed mesiodistal loss of tooth substance. In the 1980s groups, the majority of primary second molars showed mesiodistal loss of tooth substance.
  1. The first statement is true; the second is false.
  2. The first statement is false; the second is true.
  3. Both statements are true.
  4. Both statements are false.


12.Which is NOT an explanation for the increased amount of available lateral arch space?
  1. Decreased prevalence of caries
  2. Increased body height
  3. Loss of primary canines
  4. Shift in caries distribution to pits and fissures?


Article 4. Evaluation of profile esthetic change with mandibular advancement surgery. by Andrew D. Shelly, Thomas E. Southard, Karin A. Southard, John S. Casko, Jane R. Jakobsen, Kirk L. Fridrich, and John L. Mergen

13. How does mandibular advancement surgery generally affect the chin and lip?
  1. The soft and hard tissues of the chin and lip move in a 1:1 ratio.
  2. The soft and hard tissues of the chin and lip move in a 1:2 ratio.
  3. The soft and hard tissues of the chin move in a 1:0.43 ratio; the effect on the lip is variable.
  4. The soft and hard tissues of the chin move in a 1:1 ratio; the effect on the lip is variable.


14. What esthetic change was produced by mandibular advancement surgery?
  1. All patients showed some improvement.
  2. Overall there was improvement, but some patients became worse.
  3. Only those patients with mild mandibular deficiency showed improvement.
  4. Patients whose deficiency was the greatest became worse.


15. How did the initial ANB angle relate to the esthetic score?
  1. An initial ANB angle greater than 6° resulted in consistent improvement in the score.
  2. An initial ANB angle greater than 4° resulted in consistent improvement in the score.
  3. There was an inverse correlation between initial ANB angle and esthetic score.
  4. There was no correlation between initial ANB angle and esthetic score.


16. Lay persons judged results of mandibular advancement surgery differently than did orthodontic residents. For patients with an initial ANB angle less than 6°, poorer esthetics were equally as likely as improved esthetics.
  1. The first statement is true; the second is false.
  2. The first statement is false; the second is true.
  3. Both statements are true.
  4. Both statements are false.


AAOCE #46 June 2000 Registration Form(You may send a copy of this form.)

Answers

abcd abcd

1 9

2 10

3 11

4 12

5 13

6 14

7 15

8 16

Program Evaluation

Agree Neutral Disagree

1. The content was appropriate.

2. The objectives were met.

3. I will apply most of the information in my daily activities.

4. This method of CE is effective.

Name____________Phone_____________

Address_________Fax_______________

City_________State________Zip_______E-mail_____________

Payment: Check (enclosed)

Visa MasterCard Discover Card No._____Exp. Date_____/_____

Check here if this is a new address, or new telephone, fax, or mail information