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Case 1 Module 2
For this question I understand the answer now about how the maxilla grew “down” vertically as expected 0.6mm/year so about 1.2mm over the treatment time. Should we also expect ~.2mm forward movement total? Or would you say 0.8/yr if we include PNS and ANS?
I guess I am just confused if the answer should include that the maxilla did not grow forward as expected, if not any clarification on what to understand here is greatly appreciated!!
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4 Replies
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Should we say maxilla was held in the AP because of treatment ; therefore, the maxilla did not grow forward as expected.
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Elizabeth, I can agree with the maxilla being held.
To your question on maxillary displacement. I included the screen shot of figure 8 from the Buschang article. We would expect 0.7mm/yr anterior movement. It is a combination of the posterior growth displacing the maxilla down and forward. In the article, they do underscore that maxillary growth tends to be “less than we think”.
I think it gets a bit tricky with changing inclination of max incisors and the remodeling of A point.
You hit the nail on the head with this. Maxilla held is excellent choice.
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For Module 2, Case 1, prompt 2
the answer is “CVMS 2 or CS3” and “Concavity at lower border of C2 and straight at lower border of C3”
I thought for CS=3, the lower border of C3 would also be concave? And in this case, I do think the lower border of C3 does look concave. Can you weigh in on this?
My answer would be “CS=3” and “Concavity at lower border of C2 and C3”.
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Leah,
You are correct! That’s a type-o it seems. I’ll note it for correction on the slide.
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