Before/After Photos > Overbites
How recessed is my maxilla?
gmey:
Hello!
I am starting a treatmen for a jow surgery to fix my class II maloclussion. In my last consult with my doctor, she told me that they would touch only the lower jaw, I mean lower jaw advancement and genioplasty, but not advance the upper jaw because she said it was almost ok and it would not worth it.
I felt very confused with that. In a previous orthodontic treatment I had my upper premolars extracted, and my teeth were pulled back in order to camouflage my class II (which now I know it was terribly bad), so I always thought my upper jaw was VERY retruded.
I don't konw a way determine how much recessed is it, so I want your opinion and what would you do.
X-Rays here: https://imgur.com/wJo18XS
PloskoPlus:
Your occlusal plane is steep. You need CCW.
gmey:
Thanks for replying!
And what about the projection?
Now I have the results of the cephalometric analysis about both jaws and it says :
Maxillary Length: Value:80,6 Median:105+-4 Dif:-24,4 Class:Diminished
Mandibular Length: Value:99,3 Median:135+-4 Dif:-35,7 Class:Diminished
Both are very bad, all I want to konw is why my doctors would say that I just need a lower jaw advancement and genioplasty when my maxilla is also retruded. I think there are no posibilities to have a good result only with a lower jaw surgery.
april:
You should see someone else if you can. It doesn't sound like your surgeon cares about aesthetics.
Where are you from?
kavan:
The most likely possible reason WHY your doctor told you what he/she did was:
Your occlusal plane is approx 15 degrees relative to a horizont which isn't too far away from the norm. Your SNA angle, something looked at to see relative position of maxilla is approx 83 degrees which is not too far from norm of about 82 degrees. Your SNB angle, something to look at the position of the mandible, is about 75 degrees which is about 5 degrees away from the norm of about 80 degrees. ANB about 7 which is class 2.
Although SNA, SNB and ANB measures are RELATIVE angle measures and are not 'absolute' distance measures, they can be used by a maxfax to justify single (BSSO) lower jaw surgery if they feel the lower jaw RELATIVE recession is the salient problem and also if they feel they don't 'need' to move the upper jaw to accommodate the lower jaw advancement. So, THAT is the most likey reason WHY you were told what you were told which basically is there is no recession to the maxilla RELATIVE to ANGLE measures that use the S-N line for these relative measures.
Your other measures are absolute distances and could be in turn, RELATIVE to other absolute distances which are also 'small' and can't be changed. For example, Maxilla length= ANS-PNS (anterior nasal to posterior nasal spine) can be relative to an S-N distance which also could be 'small'. This could mean that the absolute measures of max, mandible length which are 'small' reflect that your entire skull structure is on the small side. A short or 'small' ANS-PNS measure called 'maxillary length' does not in it's own right mean 'retrusion'.
I don't see anything 'wrong' with the suggestion you got based on the above most probable reason why you got the proposal you got.
However, if you want you maxilla projected out past the norm (an SNA angle in excess of the norm) in order to accommodate a larger advancement to the lower jaw and feel you are on solid aesthetic grounds to want that, you could seek out a surgeon who does CCW via posterior downgraft for a second opinion.
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