Yeah if we go by his SNA and SNB deviation from the mean (very helpful info Trader, btw!), than he's got it even worse than me by 5 degrees on average. Everyone told me I needed bimax, so tada! You must therefore be a candidate as well. Interesting your maxilla is weaker than mine by 10 degrees (SNA measurement) and mandible also slightly worse but your face looks much more balanced than mine was pre chin implant and nose job.
Hi, I'm bumping my post because I was doing some reading and I think these measurements require reconsideration.
Apparently, the SN plane can be abnormally tilted. Unfortunately I now cannot find the article I read the other day which suggested that in some patients, measurements using SN plane can produce wildly inaccurate results for this reason.
According to my mandibular plane angle measurement, which uses SN plane (SN-MP) my mandibular plane is steep. However, my mandibular plane according to the Frankfort-mandibular plane angle (FMA) is not steep at all, in fact smaller than normal. Furthermore, my gonial angle is normal (116 degrees).
Also: my upper incisor angles are all normal (U1-NA, U1-FH, U1-Occ Plane)
except for the U1-SN angle. How could all of this be, unless the SN plane is abnormal?
Another example: the Saddle/Sella angle (SN-Ar) is wildly abnormal and 5.5 standard deviations away from the norm.
According to my hypothesis, then, my abnormal SN plane angle appears to have messed up my SNA and SNB measurements.
Assuming I'm right about my U1 position being good, and my U1-SN angle being instead an indication of my abnormal SN plane: if we normalize the U1-SN angle number to 102.8 and subtract the given angle, the difference gives us about a 12-13 degree deviation. If we account for my abnormal SNA and SNB angles with this deviation, then this brings both values into the normal range.
What does everyone else think? All comments/insights are appreciated!!