Orthodontics and Dental Development

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Questions and Answers

What is the average increase in mandibular intercanine width up to 9 years of age?

  • $1.5$ mm
  • $2$ mm
  • $4$ mm
  • $3$ mm (correct)

How do crowded teeth adjacent to an extraction site typically behave?

  • They align themselves (correct)
  • They remain unchanged
  • They become more spaced out
  • They become more crowded

Which of the following is a potential impact of serial extraction on the lip and facial profile?

  • Increased facial width
  • Decreased lip protrusion (correct)
  • Increased lip protrusion
  • No change in lip protrusion

Which of the following is a common indication for serial extraction?

<p>Severe crowding with tooth-size arch-length discrepancy (A)</p> Signup and view all the answers

What is the primary effect of serial extraction on the post-extraction alignment of teeth?

<p>Improved alignment of teeth (C)</p> Signup and view all the answers

What is the primary consequence of not following serial extraction with mechanotherapy?

<p>Ideal alignment is not achieved (D)</p> Signup and view all the answers

Which of the following is a key indication for serial extraction?

<p>Narrow intercanine width (B)</p> Signup and view all the answers

How does serial extraction impact the lip and facial profile?

<p>It can lead to either a more protrusive or retrusive lip and facial profile depending on the case (D)</p> Signup and view all the answers

What is the primary effect of serial extraction on tooth alignment?

<p>It leads to ideal alignment and correct root positioning (C)</p> Signup and view all the answers

How does serial extraction affect intercanine width over time?

<p>It has no effect on age-related changes in intercanine width (C)</p> Signup and view all the answers

What is a common misconception about serial extraction?

<p>It guarantees ideal tooth position and space closure. (C)</p> Signup and view all the answers

How does serial extraction impact the lip and facial profile?

<p>It worsens the lip and facial profile. (D)</p> Signup and view all the answers

What is a potential consequence of serial extraction on tooth alignment?

<p>It often leads to overcrowding. (D)</p> Signup and view all the answers

At what age does intercanine width typically change?

<p>Intercanine width decreases until adolescence, then increases with age. (C)</p> Signup and view all the answers

What are the general effects of serial extraction on treatment duration?

<p>Serial extraction often leads to longer treatment times. (B)</p> Signup and view all the answers

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