Why is the leeway space usually greater in the mandibular arch than in the maxillary arch?
- Correct answer
The mandibular primary second molar is much wider mesiodistally than the second premolar that replaces it
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The mandibular permanent canine is narrower than the primary canine it replaces
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The mandibular primate spaces are located mesial to the canines
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The mandibular premolars are wider than the primary molars they replace
This question is one of 15 in AFK practice: Orthodontics, pediatric and geriatric dentistry. Test yourself on all of them.
Practice quiz FlashcardsExplanations
Leeway space is the difference between the primary canine and molars and their successors; it is larger in the mandible mainly because the mandibular primary second molar is considerably wider than the second premolar. Permanent canines are larger, not smaller, than primary canines.
Source: Proffit, Contemporary Orthodontics — oneguy
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