Author Topic: Panicking when my surgeon showed me my simulation (pic attached)  (Read 880 times)

VincentGT

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Hi everyone,

My surgery is supposed to be on Monday. But I’m totally panicking once I saw the simulation.

I always presumed (and was told) I would get bimax, however my surgeon told me today that he would only do BSSO (and potentially a genio). First pic is before, second with BSSO and third with genio as well: simulation.

Some more pictures of my face and CBCT, although these were taken before the premolar extractions and orthodontics.

However, I don’t like this current simulation at all. This looks like a flat face and I feel like I need upper jaw advancement as well? My surgeon told me it’s not necessary or needed in my case and that the lower jaw advancement would be too big if we move the upper jaw too (with the gonials flaring out too much in that case?). I don’t even think I have gonial angles that flare out that much now? A smaller advancement, e.g. 3 mm, wouldn’t be worth it in his opinion. But I immediately see, in the simulation and daily in the mirror, the lack of upper jaw support for my nose. Multiple surgeons pointed it out.. I think even a few mm could make an aesthetic difference.

 I’d highly prefer something like this with additional upper jaw advancement: modified simulation.

Now what?

GJ

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #1 on: January 13, 2025, 06:28:37 AM »
I wouldn't worry about how simulations look. They're never accurate. The technology is amazingly bad for the modern age.

But anyway, I can see why he suggested that. You have a lot of room for the teeth themselves to move (look at the discrepancy between the upper and lower teeth), so he probably wants to avoid all the risk associated with the maxilla (nose widening, etc).
Millimeters are miles on the face.

VincentGT

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #2 on: January 13, 2025, 08:36:44 AM »
I understand the wish not to touch the maxilla if it is not needed to get a perfect bite. However, anatomically speaking my maxilla is recessed. He admit this too. Others surgeons told me too. Aesthetically speaking, I have somewhat of a flat maxilla with a concave look to it and a visually disproportionally large nose. So it's not only the simulation: I honestly feel like I will never really like my results if only the mandible is moved forward. My upper lip and nose need more support too.

The main issue with moving the maxilla and thus the mandible a few extra millimeters forward is apparently the fact that my gonials would flare outwards. Is this really a big issue? Let's say they move the maxilla forwards 4 millimeters and the mandible 4 millimeters extra, suddenly the gonial angles are a big issue which they wouldn't be if they didn't go for the 4 extra millimeters?

I am really having difficulties with the idea that after all this pain and suffering my maxilla would still be, knowingly, recessed.

GJ

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #3 on: January 14, 2025, 07:12:42 AM »
I understand the wish not to touch the maxilla if it is not needed to get a perfect bite. However, anatomically speaking my maxilla is recessed. He admit this too. Others surgeons told me too. Aesthetically speaking, I have somewhat of a flat maxilla with a concave look to it and a visually disproportionally large nose. So it's not only the simulation: I honestly feel like I will never really like my results if only the mandible is moved forward. My upper lip and nose need more support too.

The main issue with moving the maxilla and thus the mandible a few extra millimeters forward is apparently the fact that my gonials would flare outwards. Is this really a big issue? Let's say they move the maxilla forwards 4 millimeters and the mandible 4 millimeters extra, suddenly the gonial angles are a big issue which they wouldn't be if they didn't go for the 4 extra millimeters?

I am really having difficulties with the idea that after all this pain and suffering my maxilla would still be, knowingly, recessed.

I think a surgeon could go either way due to the space you have to move the teeth themselves forward. Gunson would probably do both jaws, for example. Maybe put surgery on hold and get some more consults.
Millimeters are miles on the face.

kavan

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #4 on: January 14, 2025, 06:30:48 PM »
looks like you might have a prominent anterior nasal spine which is when the top part of the upper lip area is kind of tethered to the colemella. It is something that could look worse if the maxilla area is advanced. It is addressed via a rhinoplasty to reduce the ANS. Advancement of the maxilla works for more nose support WHEN the ANS needs to be advanced. So, that would work against you if you had the maxilla advanced because the ANS is advanced in maxillary advancement. You should avoid assuming that moving PIXELS on a morph is a prediction of the result.
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VincentGT

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #5 on: January 15, 2025, 05:28:20 AM »
looks like you might have a prominent anterior nasal spine which is when the top part of the upper lip area is kind of tethered to the colemella. It is something that could look worse if the maxilla area is advanced. It is addressed via a rhinoplasty to reduce the ANS. Advancement of the maxilla works for more nose support WHEN the ANS needs to be advanced. So, that would work against you if you had the maxilla advanced because the ANS is advanced in maxillary advancement. You should avoid assuming that moving PIXELS on a morph is a prediction of the result.

Hi kavan, thanks for your response.

I don't actually know whether I have a prominent anterior nasal spine. No surgeon ever mentioned this. They did however mention the fact that my maxilla is somewhat recessed, even the surgeon who made the simulation from this post. So, even if the ANS is prominent and I would need a seperate rhinoplasty to remedy this, I would still like the advancement of the maxilla because of the concave look my middle facial third now has.

Also, in response to another post of mine last year, you said the following:

OK, your scans, cephs and morphs certainly confirm you are candidate for maxfax (double jaw) surgery.

(...)

It's also true in most cases (and here in yours) that rhino should be done AFTER maxfax. One 'lucky' example of that is when there is hump on nose and/or the nose just looks too big on the face. Bringing forward the maxilla (Lefort aspect of surgery) advances the nasal base and gives a straighter nose bridge because when base of the nose is advance with the maxilla, the hump or conVEXity of upper nose bridge VISUALLY 'goes away' simple because its appearance is RELATIVE to the base of nose being too far behind.  Also, in the event, the nostril areas could be predicted (by the maxfax surgeon) to widen too much from the maxillary advancement, they can do something called an 'alar cinch' to mitigate the widening.In such a 'lucky' case, no rhino is needed after the maxfax surgery and it can resolve to a 'free rhino'. Why? Because the nose hump going away due to the maxilla advancement, in addition to the nostril widening being mitigated by the alar cinch has very good chance of fixing/improving aesthetic issues with nose so you don't need a rhino afterwards even though the maxfax technically is NOT performing a rhino. Your situation with the nose looks to veer in the direction of what I call a 'lucky' one. Also, maxillary advancement would tend to unfurl your upper lip which is also 'lucky' since you want that.

(...)

If you see this unedited picture - where I jutted my mandible forward - I believe it to be quite obvious that I have a flat and recessed maxilla. Again, all surgeons mentioned this. It also would be the conclusion of this scan and the conclusion of my CBCT Dental, which sounded like this:

"Examination: CBCT DENTAL
Cone Beam CT of the paranasal sinuses
Examination without contrast with axial slices.
No sinusitis.

Cone Beam CT of the maxillofacial complex
The occlusion at the molar level appears normal.
SNA = 79 degrees
SNB = 75.3 degrees
ANB = 3.7 degrees"


If I'm not wrong these degrees would point out that the maxilla is somewhat recessed and the mandible is more severely recessed.

The main thing I'm struggling with is the reasoning why my surgeon discouraged me to go for the maxilla advancement: if the maxilla is advanced, the mandible should be advanced even more. He warned for flaring gonial angles. I'm hoping to get a second opinion about this, even more so if we would only advance the maxilla, let's say 3 or 4 mm. Will this 3 or 4 extra mm of (corresponding) mandible movement really create flaring gonial angles? That's what I would like to figure out. And whether there is a way to compensate for this, e.g. bone shaving, etc.

Thanks in advance for your, much appreciated, insights.

Tomasjohn

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #6 on: January 15, 2025, 09:27:25 AM »
Flaring gonial angles?
Does he maybe refer to a step off, where the cut is, just before the gonial angle?

kavan

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #7 on: January 15, 2025, 01:18:51 PM »
Hi kavan, thanks for your response.

I don't actually know whether I have a prominent anterior nasal spine. No surgeon ever mentioned this. They did however mention the fact that my maxilla is somewhat recessed, even the surgeon who made the simulation from this post. So, even if the ANS is prominent and I would need a seperate rhinoplasty to remedy this, I would still like the advancement of the maxilla because of the concave look my middle facial third now has.

Also, in response to another post of mine last year, you said the following:

If you see this unedited picture - where I jutted my mandible forward - I believe it to be quite obvious that I have a flat and recessed maxilla. Again, all surgeons mentioned this. It also would be the conclusion of this scan and the conclusion of my CBCT Dental, which sounded like this:

"Examination: CBCT DENTAL
Cone Beam CT of the paranasal sinuses
Examination without contrast with axial slices.
No sinusitis.

Cone Beam CT of the maxillofacial complex
The occlusion at the molar level appears normal.
SNA = 79 degrees
SNB = 75.3 degrees
ANB = 3.7 degrees"


If I'm not wrong these degrees would point out that the maxilla is somewhat recessed and the mandible is more severely recessed.

The main thing I'm struggling with is the reasoning why my surgeon discouraged me to go for the maxilla advancement: if the maxilla is advanced, the mandible should be advanced even more. He warned for flaring gonial angles. I'm hoping to get a second opinion about this, even more so if we would only advance the maxilla, let's say 3 or 4 mm. Will this 3 or 4 extra mm of (corresponding) mandible movement really create flaring gonial angles? That's what I would like to figure out. And whether there is a way to compensate for this, e.g. bone shaving, etc.

Thanks in advance for your, much appreciated, insights.

My apologies for my contradictory responses. The bridge of your nose would tend to improve with maxillary advancement. But the ANS might need to be trimmed to address the tethering. Thing is trimming the ANS (if that is what is causing the tethering) is more in the venue of a rhino surgeon than a maxfax guy unless the maxfax guy is also good at noses.

As to the warning about excess flaring to the 'GONIAL' ANGLES with the extra lower jaw advancement that would go with the maxillary advancement, that type of warning usually is said in reference to the alar rims (part of the nose flanking the nostrils) showing wider and/or the nasio-labial angle (nose to lip angle) becoming overly obtuse. IDK...maybe that's what he meant and said the wrong word.

ETA:  As to SNA, SNB and ANB angles, different sources give different norms.

For example SNA can range from 78 deg. to 84 deg. and be within norm
SNB can range from 75 deg to 81 deg.

ANB can range from 1 deg to 5 deg.

So, depends on what norm ranges the surgeon uses and/or his/her aesthetic preference.
« Last Edit: January 15, 2025, 01:33:01 PM by kavan »
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kavan

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #8 on: January 15, 2025, 01:46:23 PM »
Flaring gonial angles?
Does he maybe refer to a step off, where the cut is, just before the gonial angle?

I think something got lost in the translation as to what was said vs. what was meant. The flaring associated with maxillary advancement refers to the flaring of the alar rims at base of nose. The angle increases associated with maxillary advancement of the base of the nose refers to the increase in the nose to lip angle which could become overly obtuse (more than 90 deg angle).
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VincentGT

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #9 on: January 16, 2025, 06:55:04 AM »
I think something got lost in the translation as to what was said vs. what was meant. The flaring associated with maxillary advancement refers to the flaring of the alar rims at base of nose. The angle increases associated with maxillary advancement of the base of the nose refers to the increase in the nose to lip angle which could become overly obtuse (more than 90 deg angle).

He definitely meant the gonial angles. He pointed at the angles on the CBCT. The reasoning is as follows: if excessive mandible advancement is done, the lower jaw would become too square and the gonial angles would point outwards. I don't really understand how this would anatomically work (my face doesn't get any wider by being advanced?), but that is most definitely what he said. All my questions about nose, lips, philtrum etc. weren't even addressed because he wasn't willing to do a Lefort 1 too.

I had a second opinion in the meantime and this second surgeon confirmed the gonial thing as being a potential trade-off of advancing the mandible too much. She too confirmed that my maxilla is a bit recessed though and she suggested that the initial surgeon (who possesses all the pictures, scans, etc.) would make a second simulation with bimax. I don't feel like this initial surgeon is willing to do this though..

kavan

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #10 on: January 16, 2025, 10:34:48 AM »
He definitely meant the gonial angles. He pointed at the angles on the CBCT. The reasoning is as follows: if excessive mandible advancement is done, the lower jaw would become too square and the gonial angles would point outwards. I don't really understand how this would anatomically work (my face doesn't get any wider by being advanced?), but that is most definitely what he said. All my questions about nose, lips, philtrum etc. weren't even addressed because he wasn't willing to do a Lefort 1 too.

I had a second opinion in the meantime and this second surgeon confirmed the gonial thing as being a potential trade-off of advancing the mandible too much. She too confirmed that my maxilla is a bit recessed though and she suggested that the initial surgeon (who possesses all the pictures, scans, etc.) would make a second simulation with bimax. I don't feel like this initial surgeon is willing to do this though..

Well, given it has been established here at this point in time that the 'risk' would be excess flaring of the gonial angles (mind you in a circumstance where flaring risks usually apply to the nasal base area), then it resolves to a 'risk' you would like to take in exchange for getting the maxillary advancement you want.

IRONICALLY, the 'risk' of more gonial flaring is something a lot of guys pay to get (custom jaw implants for that and also chin wing procedures that flare out the angles). So, it would depend IF you thought you would look better in frontal perspective as a result of that risk. Since you like to morph, morph yourself (frontal perspective) with more prominent gonial angles. It won't be a prediction of the outcome of surgery but it would give you some idea IF you would not mind having a more square lower jaw.
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Tomasjohn

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #11 on: January 17, 2025, 02:14:57 AM »
Haha yes it's a but ironic,.the point with the gonial angles.

Ok, now I'm getting curious.
If the lower jaw is moved forward, as in the simulation of the surgery (from op: https://imgur.com/a/XkSN4zR) is the rear part that remains behind pushed outwards a little by the bone that is sliding forward, in the area of the incision, as a wider segment is moved from the rear (wide) the the front (narrower) (within the incision area)?
« Last Edit: January 17, 2025, 02:40:10 AM by Tomasjohn »

VincentGT

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #12 on: January 17, 2025, 06:03:43 AM »
Well, given it has been established here at this point in time that the 'risk' would be excess flaring of the gonial angles (mind you in a circumstance where flaring risks usually apply to the nasal base area), then it resolves to a 'risk' you would like to take in exchange for getting the maxillary advancement you want.

IRONICALLY, the 'risk' of more gonial flaring is something a lot of guys pay to get (custom jaw implants for that and also chin wing procedures that flare out the angles). So, it would depend IF you thought you would look better in frontal perspective as a result of that risk. Since you like to morph, morph yourself (frontal perspective) with more prominent gonial angles. It won't be a prediction of the outcome of surgery but it would give you some idea IF you would not mind having a more square lower jaw.

Fair suggestion and I definitely wouldn't mind a slightly wider gonial width, but of course it depends about how much widenening we are talking. I don't think it's a good look if the gonial width is the widest part of a face.

Haha yes it's a but ironic,.the point with the gonial angles.

Ok, now I'm getting curious.
If the lower jaw is moved forward, as in the simulation of the surgery (from op: https://imgur.com/a/XkSN4zR) is the rear part that remains behind pushed outwards a little by the bone that is sliding forward, in the area of the incision, as a wider segment is moved from the rear (wide) the the front (narrower) (within the incision area)?

I don't fully understand the last part of your question, but you probably have a point: how would the gonial angles even flare outside if that part of the jaw isn't even moved? The cut (at least in the simulation) is made more towards the chin so the gonial angles don't even move? Unless he's predicting that a maxillary movement would mean some rotation in which case I guess the gonial angles could become more pronounced.

Tomasjohn

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #13 on: January 17, 2025, 06:51:35 AM »

I don't fully understand the last part of your question, but you probably have a point: how would the gonial angles even flare outside if that part of the jaw isn't even moved? The cut (at least in the simulation) is made more towards the chin so the gonial angles don't even move? Unless he's predicting that a maxillary movement would mean some rotation in which case I guess the gonial angles could become more pronounced.

My consideration was:
1. the incision goes diagonally backwards freeing the entire lower jaw
2. the now freed lower jaw slides forward along the incision surface. I assume that there must be bone to bone contact so that the lower jaw is stable in its new position.
3. now the rearmost part of the lower jaw, which is also the widest, comes forward along the cutting surface. Maybe there will be bone grafts in between?

My consideration: Is the ramus, or the part of the jaw at the very back which is not moved forwards, now pushed outwards from the inside, at least a little?

To be honest, I can't imagine that this has a (visually) significant effect, but that's exactly what I was interested in. And if it does, what is the effect on the temporomandibular joints?

As I said, I have no idea whether this is true or not, the possibility just occurred to me because I wondered how the angles go outwards?

kavan

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Re: Panicking when my surgeon showed me my simulation (pic attached)
« Reply #14 on: January 17, 2025, 10:00:18 AM »
Haha yes it's a but ironic,.the point with the gonial angles.

Ok, now I'm getting curious.
If the lower jaw is moved forward, as in the simulation of the surgery (from op: https://imgur.com/a/XkSN4zR) is the rear part that remains behind pushed outwards a little by the bone that is sliding forward, in the area of the incision, as a wider segment is moved from the rear (wide) the the front (narrower) (within the incision area)?

I think the rear part has to be SPLIT through (separation between the gonial angle) to release the rest of the mandible forward.

ETA: I think you could be right about that.
« Last Edit: January 17, 2025, 01:22:24 PM by kavan »
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