Non-Orthodontic Non-Restorative Closure of Acquired Diastemata - Exam 72
by Livada, Shiloah, Hottel
To illustrate the reversibility of “pathologic tooth migration” in several patients that
were managed by periodontal therapy alone, along with a review of the relevant

 1) Which of the following can be contributing
factors for the formation of midline diastema in
  1. Aberrant frenum attachment
  2. Thumb sucking
  3. Tongue thrusting
  4. All of the above.
 2) Which of the following is the most common clinical manifestation of pathologic tooth migration:
  1. Rotation
  2. Extrusion
  3. Facial flaring
  4. Instrusion
 3) A closure of acquired diastemata in adults has been reported following:
  1. Non-surgical periodontal therapy
  2. Surgical intervention
  3. Non-surgical periodontal therapy and surgical intervention
  4. False, it has never been reported
 4) Gaumet et al in their study found that the best
results of closure were observed when the diastema
  1. Larger than 1.5 mm in diameter
  2. Less or equal than 1 mm
  3. Less than 0.5 mm
  4. Larger than 1 mm
 5) The incidence of pathologic tooth migration in
periodontal patients has been reported to be:
  1. 20-28%
  2. 10-20%
  3. 30-55%
  4. 100%