jawsurgeryforums.com

General Category => Functional Surgery Questions => Topic started by: shnk on August 24, 2017, 08:30:03 PM

Title: Class 2 Division 2 Help
Post by: shnk on August 24, 2017, 08:30:03 PM
Hey guys my ortho recommended i get a 7mm lower jaw advancement 2 years into braces treatment. I have no idea what to do. I've always been self conscious about my side profile as it doesn't look very nice in my opinion. What would give me the best functional and aesthetic results? I do have some self esteem issues. I dont think im good looking at all. Just a straight advancement of 7mm on my lower jaw? Do i have a case for upper and lower jaw surgery? I do seem like i have a skeletal discrepancy and my reclined upper incisors do feel like they set my lower jaw back a bit. I have also been told by other orthos that i do not need surgery to achieve a perfect bite but my side profile wouldn't change. I would need extractions on my lower jaw to create an overbite if i wanted surgery. Will this change my frontal appearance? I already have a very narrow jaw. Not sure who is right. I just need your opinions.

Front and side:
http://imgur.com/a/SibSq

Xray:
http://imgur.com/a/pTg6B
Title: Re: Class 2 Division 2 Help
Post by: Lazlo on August 24, 2017, 09:33:05 PM
Hey guys my ortho recommended i get a 7mm lower jaw advancement 2 years into braces treatment. I have no idea what to do. I've always been self conscious about my side profile as it doesn't look very nice in my opinion. What would give me the best functional and aesthetic results? I do have some self esteem issues. I dont think im good looking at all. Just a straight advancement of 7mm on my lower jaw? Do i have a case for upper and lower jaw surgery? I do seem like i have a skeletal discrepancy and my reclined upper incisors do feel like they set my lower jaw back a bit. I have also been told by other orthos that i do not need surgery to achieve a perfect bite but my side profile wouldn't change. I would need extractions on my lower jaw to create an overbite if i wanted surgery. Will this change my frontal appearance? I already have a very narrow jaw. Not sure who is right. I just need your opinions.

Front and side:
http://imgur.com/a/SibSq

Xray:
http://imgur.com/a/pTg6B

Honestly you look pretty good. You're handsome for sure. I wouldn't go for surgery. And don't get all this overbite to do surgery bulls**t. DON'T GET EXTRACTIONS NO MATTER WHAT. End of story.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 24, 2017, 09:47:22 PM
Honestly you look pretty good. You're handsome for sure. I wouldn't go for surgery. And don't get all this overbite to do surgery bulls**t. DON'T GET EXTRACTIONS NO MATTER WHAT. End of story.

Thanks man.. i never really liked the idea of surgery. Maybe i should gain some confidence and hit the gym instead? One thing that does worry me tho is the clicking in my jaw. I have to jut my jaw forward to open it fully.
Title: Re: Class 2 Division 2 Help
Post by: CCW on August 25, 2017, 01:25:25 AM
CCW bimax, no extractions or genio.
Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 25, 2017, 10:38:16 AM
I would suggest a counterclockwise rotation, and a double jaw surgery, with some minimum maxillary advancement and substantial mandibular advancement.
Your profile is your weakness. En face, you look decent, even though your jawline is weak.
Personally, I would go for it, but it's your decision and your face.
Title: Re: Class 2 Division 2 Help
Post by: ditterbo on August 25, 2017, 01:28:10 PM
Ehhh we don't know if your nose is humpback or not.  If it is / you don't like it for it's heft, then bimax looks even more obvious a solution to me. Don't do rhinoplasties if you can avoid it with a one-two punch bimax surgery.  You'll atleast turn more handsome / decent without that massively retruded jaw.  You've already got a decently forward looking jawline (distance from pogonion to neck) before even getting bimax.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 25, 2017, 02:38:39 PM
CCW bimax, no extractions or genio.

I would suggest a counterclockwise rotation, and a double jaw surgery, with some minimum maxillary advancement and substantial mandibular advancement.
Your profile is your weakness. En face, you look decent, even though your jawline is weak.
Personally, I would go for it, but it's your decision and your face.

Do i need bimax? Will linear advancement just on the lower jaw give me a less optimal aesthetic outcome? Make my face longer? Also i dont have a gummy smile at all so would this mess up my smile? I have the perfect amount teeth show so i dont want to mess that up by messing with my upper jaw.



Ehhh we don't know if your nose is humpback or not.  If it is / you don't like it for it's heft, then bimax looks even more obvious a solution to me. Don't do rhinoplasties if you can avoid it with a one-two punch bimax surgery.  You've got a similar facial setup as me, so I'm going to project a little bit here, but my guess is you can't quite put your finger on what you don't like about your looks.  It comes down to the close-set eyes and narrow/delicate overall facial structure, aka rather having a head transplant.  But yeah you'll atleast turn more handsome / decent without that massively retruded jaw. I could be totally wrong. You've already got a decently forward looking jawline (distance from pogonion to neck) before even getting bimax.

Got a big slightly curved nose but it doesnt bother me that much. Do you suggest CCW bimax aswell? I didn't know i had close set eyes. My jaw is very narrow. I think it just appears like this because of the picture.
Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 25, 2017, 05:46:02 PM
Do i need bimax? Will linear advancement just on the lower jaw give me a less optimal aesthetic outcome? Make my face longer? Also i dont have a gummy smile at all so would this mess up my smile? I have the perfect amount teeth show so i dont want to mess that up by messing with my upper jaw.

It depends. When you smile, do you display a few mms (1-2) of your gummies?
If so, a 2-3-mm maxillary advancement and a 2-3mm anterior maxillary impaction should be enough.
If not, then, you are probably right. The impaction may affect your upper teeth show, which means the lower only advancement is recommended.

Ps. Take what others say about your facial features with a pinch of salt. Your eye area is just fine. Ignore c*nts who won't take anything less than a male-model face.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 25, 2017, 06:22:28 PM
It depends. When you smile, do you display a few mms (1-2) of your gummies?
If so, a 2-3-mm maxillary advancement and a 2-3mm anterior maxillary impaction should be enough.
If not, then, you are probably right. The impaction may affect your upper teeth show, which means the lower only advancement is recommended.

Ps. Take what others say about your facial features with a pinch of salt. Your eye area is just fine. Ignore c*nts who won't take anything less than a male-model face.

My upper teeth seems to be lined up perfectly with my upper lip. Maybe 1mm show of gummies? Not sure. Should i post a picture? And thanks man. I'll try not to obsess over my looks but it happens sometimes.
Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 25, 2017, 10:11:25 PM
My upper teeth seems to be lined up perfectly with my upper lip. Maybe 1mm show of gummies? Not sure. Should i post a picture? And thanks man. I'll try not to obsess over my looks but it happens sometimes.
Actually, yes, a photo with your smiling would be helpful.

It's 2017. I get it. If we don't look like Nick Bateman, we are all doomed. LOL.
Face-wise, en face you look average. Your profile is a little worse.
A well-planned and -executed ortho would definitely improve your face aesthetically, but you'd not end up looking like Mr. Bateman.
It's completely different trying to look the best you can and trying to look like someone else.
Cheers!
Title: Re: Class 2 Division 2 Help
Post by: tdawg on August 25, 2017, 10:58:47 PM
I personally wouldnt do jaw surgery just for profile aesthetics(unless there was a severe abnormality). How often to judge somebody's attractiveness by their profile? The girl I am crushing on right now, I have no idea what she looks like from the side and I dont really care. People tend not to notice as long as everything is normalish and your standard mild to early moderate class 2 falls into that imo. From the front(which is what matters) you look normal. All that being said it is your face not mine and the fact that you even made this thread indicates it bothers you. You need to do what will bring you peace. Just know that there are risks to the surgery. Do your research and evaluate the risks + cost in money and recovery time vs the potential benefit. Good luck in whatever you decide.
Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 26, 2017, 12:55:31 AM
I personally wouldnt do jaw surgery just for profile aesthetics(unless there was a severe abnormality). How often to judge somebody's attractiveness by their profile? The girl I am crushing on right now, I have no idea what she looks like from the side and I dont really care. People tend not to notice as long as everything is normalish and your standard mild to early moderate class 2 falls into that imo. From the front(which is what matters) you look normal. All that being said it is your face not mine and the fact that you even made this thread indicates it bothers you. You need to do what will bring you peace.
Well, firstly, a photo can be misleading. We all know that.
Secondly, the lower jaw advancement wouldn't just improve his profile. His jawline is also weak and that's partly because of his recessed mandible.
An 8-10mm advancement would substantially improve his jawline, hands down.
However, as you correctly mentioned, jaw surgery is yet another surgery, which means there are risks involved and you can never predict highly accurately the outcome if it.
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 26, 2017, 01:38:56 PM
Your reclined upper incisors are part of the problem as they act as a 'clasp' to push your mandible backwards. So, they would have to be pushed forward (braces) as part of bringing lower jaw forward. The lower teeth would have to be pushed backwards to maximize the lower jaw advancement and also to MINIMIZE the very deep chin sulcus you have which would tend to look even deeper subsequent to chin advancement that would probably go along with advancing the lower jaw. Since there is NOT enough room to push the lower teeth backwards, THAT is why they need to pluck a pre-molar (one from each side) to maximize the lower advancement and minimize the depth of the deep chin sulcus when they also advance chin. Most likely bimax as opposed to single jaw simply because it's very common to have to make upper jaw adjustments to accommodate displacement of the lower jaw.

I could be in error due to your MARKING UP your ceph in places where I'm looking for the A and B points but it looks like your ANB angle is approx 8 degrees which is 2X the norm and marker for retrusive mandible which 'jives' with your feeling you have a skeletal descrepency and also seeing the soft tissue profile of your lower face is much more backwards than you would like to see it.

You don't need surgery to 'get the bite right'. But you might instead want it to balance the jaws as to correct the skeletal deficiency. Bringing a narrow lower face more forward in this process will make it look less narrow because you're bringing it forward and well enough to compensate for plucking the pre-molars in this process. Pre-molar plucking is bad when they do it JUST TO get the bite right because it's often done to the upper jaw to push the upper teeth backwards to accommodate a retrusive lower jaw. So, it depends on why they are plucking them.

Features:

Eyes:

Except for some minor ptosis (or maybe it's just micro blinking for the photo?), your eyes are good. Nice horizontally 'long' palpebral fissue (distance from inner to outer canthus) and distance of'one eye' between the eyes.

Ears: Would look better pinned back. Sticking out exaggerates any narrowness to face.

Nose: Well, I can see you don't want people to comment on that (blacking it out and cutting the ceph. But just to say, that's what people in 'real life' will notice first on your face. But it would look relatively less 'out there' when the mandible and chin are brought forward.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 27, 2017, 03:03:33 PM
Well, firstly, a photo can be misleading. We all know that.
Secondly, the lower jaw advancement wouldn't just improve his profile. His jawline is also weak and that's partly because of his recessed mandible.
An 8-10mm advancement would substantially improve his jawline, hands down.
However, as you correctly mentioned, jaw surgery is yet another surgery, which means there are risks involved and you can never predict highly accurately the outcome if it.


imgur.com/a/Cv2u0

I personally wouldnt do jaw surgery just for profile aesthetics(unless there was a severe abnormality). How often to judge somebody's attractiveness by their profile? The girl I am crushing on right now, I have no idea what she looks like from the side and I dont really care. People tend not to notice as long as everything is normalish and your standard mild to early moderate class 2 falls into that imo. From the front(which is what matters) you look normal. All that being said it is your face not mine and the fact that you even made this thread indicates it bothers you. You need to do what will bring you peace. Just know that there are risks to the surgery. Do your research and evaluate the risks + cost in money and recovery time vs the potential benefit. Good luck in whatever you decide.

Yeah thats true. I'm still looking around before i make a decision. Thank you.


Your reclined upper incisors are part of the problem as they act as a 'clasp' to push your mandible backwards. So, they would have to be pushed forward (braces) as part of bringing lower jaw forward. The lower teeth would have to be pushed backwards to maximize the lower jaw advancement and also to MINIMIZE the very deep chin sulcus you have which would tend to look even deeper subsequent to chin advancement that would probably go along with advancing the lower jaw. Since there is NOT enough room to push the lower teeth backwards, THAT is why they need to pluck a pre-molar (one from each side) to maximize the lower advancement and minimize the depth of the deep chin sulcus when they also advance chin. Most likely bimax as opposed to single jaw simply because it's very common to have to make upper jaw adjustments to accommodate displacement of the lower jaw.

I could be in error due to your MARKING UP your ceph in places where I'm looking for the A and B points but it looks like your ANB angle is approx 8 degrees which is 2X the norm and marker for retrusive mandible which 'jives' with your feeling you have a skeletal descrepency and also seeing the soft tissue profile of your lower face is much more backwards than you would like to see it.

You don't need surgery to 'get the bite right'. But you might instead want it to balance the jaws as to correct the skeletal deficiency. Bringing a narrow lower face more forward in this process will make it look less narrow because you're bringing it forward and well enough to compensate for plucking the pre-molars in this process. Pre-molar plucking is bad when they do it JUST TO get the bite right because it's often done to the upper jaw to push the upper teeth backwards to accommodate a retrusive lower jaw. So, it depends on why they are plucking them.

Features:

Eyes:

Except for some minor ptosis (or maybe it's just micro blinking for the photo?), your eyes are good. Nice horizontally 'long' palpebral fissue (distance from inner to outer canthus) and distance of'one eye' between the eyes.

Ears: Would look better pinned back. Sticking out exaggerates any narrowness to face.

Nose: Well, I can see you don't want people to comment on that (blacking it out and cutting the ceph. But just to say, that's what people in 'real life' will notice first on your face. But it would look relatively less 'out there' when the mandible and chin are brought forward.

Wouldn't getting a ccw rotation eliminate the need to get extractions? Do you recommend i get a ccw rotation aswell because of my steep angle? Would a linear advancement look bad? And you also recommend a chin advancement?? Thank you for your criticism.
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 27, 2017, 05:02:51 PM
imgur.com/a/Cv2u0

Yeah thats true. I'm still looking around before i make a decision. Thank you.


Wouldn't getting a ccw rotation eliminate the need to get extractions? Do you recommend i get a ccw rotation aswell because of my steep angle? Would a linear advancement look bad? And you also recommend a chin advancement?? Thank you for your criticism.

I'm not so sure about CCW in your case. Keep in mind that a rotation of the maxilla is with the aim of getting the occlusal plane closer to the horizontal (but not totally flat). In turn, ANS-PNS (maxilla) also gets closer to the horizont.

Here is example: (http://www.scielo.br/img/revistas/dpjo/v17n4/a28fig3.jpg)

The OP is taking on a big downward diagonal (negative slope). So is ANS-PNS of maxilla. The rotation is CCW and both the OP and ANS-PNS are more aligned with the horizont.

In this example: (http://www.scielo.br/img/revistas/dpjo/v17n4/a28fig8.jpg)

The OP is too close to the horizont. ANS-PNS is taking on more of an upward diagonal (positive slope). The rotation is CLOCKWISE.

In your case, ANS-PNS is aligned away from the horizont via more of an upward diagonal. So, it would be clockwise rotation that would align it closer. Not CCW--OR something where it's just left to 'linear' advancement with little rotation. So, I don't think it's a question of CCW in your case. But check with your maxfax.

It looks to me like they probably want to MINIMIZE moving the maxilla forward for the above reason where your only option is to move the lower teeth backwards and pluck out the premolars in X-change for MAXIMIZING lower jaw and chin advancement.


Title: Re: Class 2 Division 2 Help
Post by: shnk on August 27, 2017, 06:39:00 PM
I'm not so sure about CCW in your case. Keep in mind that a rotation of the maxilla is with the aim of getting the occlusal plane closer to the horizontal (but not totally flat). In turn, ANS-PNS (maxilla) also gets closer to the horizont.

Here is example: (http://www.scielo.br/img/revistas/dpjo/v17n4/a28fig3.jpg)

The OP is taking on a big downward diagonal (negative slope). So is ANS-PNS of maxilla. The rotation is CCW and both the OP and ANS-PNS are more aligned with the horizont.

In this example: (http://www.scielo.br/img/revistas/dpjo/v17n4/a28fig8.jpg)

The OP is too close to the horizont. ANS-PNS is taking on more of an upward diagonal (positive slope). The rotation is CLOCKWISE.

In your case, ANS-PNS is aligned away from the horizont via more of an upward diagonal. So, it would be clockwise rotation that would align it closer. Not CCW--OR something where it's just left to 'linear' advancement with little rotation. So, I don't think it's a question of CCW in your case. But check with your maxfax.

It looks to me like they probably want to MINIMIZE moving the maxilla forward for the above reason where your only option is to move the lower teeth backwards and pluck out the premolars in X-change for MAXIMIZING lower jaw and chin advancement.

Ah ok i see. I thought maybe my lower jaw angle was too steep. So i could get away with just a linear lower jaw advancement maybe? I have an appointment with a maxfac in 15 days so ill talk to him as well. I'll have to talk with my ortho too to see if ill need extractions or not. I think she might be able to push my lower teeth back enough.
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 27, 2017, 09:42:06 PM
Ah ok i see. I thought maybe my lower jaw angle was too steep. So i could get away with just a linear lower jaw advancement maybe? I have an appointment with a maxfac in 15 days so ill talk to him as well. I'll have to talk with my ortho too to see if ill need extractions or not. I think she might be able to push my lower teeth back enough.

Your mandibular plane angle does not look steep. Remember that the ortho should be one working with the max fax.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 28, 2017, 10:43:15 AM
Your mandibular plane angle does not look steep. Remember that the ortho should be one working with the max fax.

I'm just scared that my face will look longer if i get a linear advancement as i already have a big head and narrow jawline. And yeah the ortho and maxfac will be working together.
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 28, 2017, 10:49:56 AM
I'm just scared that my face will look longer if i get a linear advancement as i already have a big head and narrow jawline. And yeah the ortho and maxfac will be working together.

It could, but they try to offset that with chin advancement that is not only forward but also UP. But as I said prior, when the narrowness of the jaw comes forward, it looks less narrow in frontal perspective.
Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 28, 2017, 11:37:41 AM
I'm just scared that my face will look longer if i get a linear advancement as i already have a big head and narrow jawline. And yeah the ortho and maxfac will be working together.
If your chin is brought forward as well in a separate procedure (of course), the vertical lengthening won't be that substantial.
Still, I think CCW would be better for you. Just a 2-3 mm anterior maxillary impaction would be perfect.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 28, 2017, 12:50:35 PM
It could, but they try to offset that with chin advancement that is not only forward but also UP. But as I said prior, when the narrowness of the jaw comes forward, it looks less narrow in frontal perspective.

Alright got it. Would a linear advancement provide a result similar to jutting my jaw? Or would it be better?

If your chin is brought forward as well in a separate procedure (of course), the vertical lengthening won't be that substantial.
Still, I think CCW would be better for you. Just a 2-3 mm anterior maxillary impaction would be perfect.

What would an impaction of 2-3 mm do to my midface? Would this do something to my nose?
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 28, 2017, 01:56:49 PM
To my last entry,  I would add that your face, as is, (via the photos you show)  would NOT be considered 'long'. Not by any relative measurements that would go into assessments of 'long'.
What you percieve as 'long' would be attributed to the illusion of such by:

a: ears sticking out which will make the face look more narrow. (illusionary narrowness)

b: Narrow mandible. (real narrowness)

So, narrowness, whether it's an illusion or real or combo thereof will yield the SUBJECTIVE assessment of 'long'. But in terms of OBJECTIVE measures (from your photo), it isn't 'long'. Nor do you have a 'high' mandibular plane. Any anticipated appearance of 'excess' length would tend to be offset by the lower face looking wider when brought forward and also a genio aimed at shortening the chin during the advancement of it.

You could have impaction which is CCW. But you should also be aware that a key objective in favor of CCW is to get the maxilla at ANS-PNS closer to the horizont. In your case, it looks like (from your ceph) is angled away from the horizont and would be angled more away with CCW.

Then there is the MYSTERY of your nose which you have blocked out. A rotation, whether it be CCW or Clock Wise will affect how the nose looks. Just saying that in the absence of visual nose information but in the presence of seeing the orientation of ANS-PNS, I'm just pointing out why i would not be so quick to suggest CCW.  Not telling you not to do it. I'm just explaining why I have not suggested it.

I have no issue with anyone else suggesting it or your asking for it to your max fax. I'm just explaining why I haven't.
---

As to your 'jaw jut' question, let's look at that in terms of a simple mechanical analysis as to the displacements you make while doing it. Do to your front teeth, to get PAST them to jut your jaw out, you have to drop it down to bring it more forward. It looks like you would have to do that just to get the lower teeth to meet the upper teeth edge to edge. Liking that look is a sign in favor of the surgery. Even if after getting the teeth to meet edge to edge, you went beyond that and bit down into an UNDER bite and liked that look (with your mouth shut of course), it another indicator in favor of the BSSO. The former (edge to edge tooth meet) increases the the angle of the mandibular plane because you are dropping the jaw down to make that movement. The latter, not so much. So, some combination of both. Both are indicators in favor of the surgery. But NEITHER jaw juts predict and show you 'exactly' how you will look after the surgery.

A ceph displacement proposal should give you a better idea of the profile contour changes.



Alright got it. Would a linear advancement provide a result similar to jutting my jaw? Or would it be better?


Title: Re: Class 2 Division 2 Help
Post by: Dean_il_greco on August 28, 2017, 03:11:20 PM

What would an impaction of 2-3 mm do to my midface? Would this do something to my nose?
That is soft tissue, dude
I don't think it could get worse than it is already.
Title: Re: Class 2 Division 2 Help
Post by: PloskoPlus on August 28, 2017, 03:25:41 PM
You don't have much to impact.  It would be a disaster in your case.
Title: Re: Class 2 Division 2 Help
Post by: shnk on August 28, 2017, 05:09:01 PM
To my last entry,  I would add that your face, as is, (via the photos you show)  would NOT be considered 'long'. Not by any relative measurements that would go into assessments of 'long'.
What you percieve as 'long' would be attributed to the illusion of such by:

a: ears sticking out which will make the face look more narrow. (illusionary narrowness)

b: Narrow mandible. (real narrowness)

So, narrowness, whether it's an illusion or real or combo thereof will yield the SUBJECTIVE assessment of 'long'. But in terms of OBJECTIVE measures (from your photo), it isn't 'long'. Nor do you have a 'high' mandibular plane. Any anticipated appearance of 'excess' length would tend to be offset by the lower face looking wider when brought forward and also a genio aimed at shortening the chin during the advancement of it.

You could have impaction which is CCW. But you should also be aware that a key objective in favor of CCW is to get the maxilla at ANS-PNS closer to the horizont. In your case, it looks like (from your ceph) is angled away from the horizont and would be angled more away with CCW.

Then there is the MYSTERY of your nose which you have blocked out. A rotation, whether it be CCW or Clock Wise will affect how the nose looks. Just saying that in the absence of visual nose information but in the presence of seeing the orientation of ANS-PNS, I'm just pointing out why i would not be so quick to suggest CCW.  Not telling you not to do it. I'm just explaining why I have not suggested it.

I have no issue with anyone else suggesting it or your asking for it to your max fax. I'm just explaining why I haven't.
---

As to your 'jaw jut' question, let's look at that in terms of a simple mechanical analysis as to the displacements you make while doing it. Do to your front teeth, to get PAST them to jut your jaw out, you have to drop it down to bring it more forward. It looks like you would have to do that just to get the lower teeth to meet the upper teeth edge to edge. Liking that look is a sign in favor of the surgery. Even if after getting the teeth to meet edge to edge, you went beyond that and bit down into an UNDER bite and liked that look (with your mouth shut of course), it another indicator in favor of the BSSO. The former (edge to edge tooth meet) increases the the angle of the mandibular plane because you are dropping the jaw down to make that movement. The latter, not so much. So, some combination of both. Both are indicators in favor of the surgery. But NEITHER jaw juts predict and show you 'exactly' how you will look after the surgery.

A ceph displacement proposal should give you a better idea of the profile contour changes.

My mandible is definitely narrower than average. Also im pretty underweight. Thats probably another reason why it looks narrow.
I've got a slightly crooked nose so a CCW rotation would straighten it a bit im assuming? If you're impacting and advancing a few mm?


That is soft tissue, dude
I don't think it could get worse that it already is.

Yeah i guess so.

You don't have much to impact.  It would be a disaster in your case.

So would you just suggest a linear advancement? I'm getting mixed answers here. Some people are saying CCW rotation.
Title: Re: Class 2 Division 2 Help
Post by: kavan on August 28, 2017, 05:52:50 PM
My mandible is definitely narrower than average. Also im pretty underweight. Thats probably another reason why it looks narrow.
I've got a slightly crooked nose so a CCW rotation would straighten it a bit im assuming? If you're impacting and advancing a few mm?

The point is that your face is narrow but NOT long.
Because you have blocked vision of your nose, i would make no assumptions that CCW would straighten it. All I can tell you is that the nose can change with ROTATIONS of the maxilla and your ANS-PNS (anterior to posterior nasal spine) is not oriented in the direction consistent with others who benefit from CCW.
Title: Re: Class 2 Division 2 Help
Post by: shnk on September 28, 2017, 03:51:13 PM
Need more opinions. Thanks
Title: Re: Class 2 Division 2 Help
Post by: GJ on September 28, 2017, 03:58:58 PM
Haven't read the responses of what others think, but I think this is a rare case where pulling two lower bicuspids to move linear might be appropriate. Hate to say that because extractions are awful, but I can see it as a legit approach here.

CCW maybe, but I'd fear it would shorten your face too much, and the mandibular plane doesn't look especially steep.

Of course there is the option to do nothing. If profile is the only problem that might be best.

Tough case.
Title: Re: Class 2 Division 2 Help
Post by: shnk on September 28, 2017, 04:04:46 PM
Haven't read the responses of what others think, but I think this is a rare case where pulling two lower bicuspids to move linear might be appropriate. Hate to say that because extractions are awful, but I can see it as a legit approach here.

CCW maybe, but I'd fear it would shorten your face too much, and the mandibular plane doesn't look especially steep.

Of course there is the option to do nothing. If profile is the only problem that might be best.

Tough case.

Do you know how much extra advancement extractions could give? Something like 3-5m more? I'm scared if i get linearly advanced too much then it might make me look like a horse.
Title: Re: Class 2 Division 2 Help
Post by: GJ on September 28, 2017, 04:58:17 PM
Do you know how much extra advancement extractions could give? Something like 3-5m more? I'm scared if i get linearly advanced too much then it might make me look like a horse.

I believe a premolar is 8mm, from memory.

You probably wouldn't get that much advancement from extracting the lowers alone because teeth would rotate and whatnot to close the space. I'm not sure what exact mm advancement you'd get from that. Take notes from this thread and bring them to a surgeon to ask.
Title: Re: Class 2 Division 2 Help
Post by: shnk on September 28, 2017, 06:37:50 PM
I believe a premolar is 8mm, from memory.

You probably wouldn't get that much advancement from extracting the lowers alone because teeth would rotate and whatnot to close the space. I'm not sure what exact mm advancement you'd get from that. Take notes from this thread and bring them to a surgeon to ask.

What do you think would be an advancement that would give a promising result? 1cm? And do you recommend a genio? The skin on my chin seems to be very thick.
Title: Re: Class 2 Division 2 Help
Post by: PloskoPlus on September 28, 2017, 06:46:45 PM
What do you think would be an advancement that would give a promising result? 1cm? And do you recommend a genio? The skin on my chin seems to be very thick.
You already have a prominent chin. It may actually need to be reduced if you advance the lower jaw.
Title: Re: Class 2 Division 2 Help
Post by: shnk on September 28, 2017, 07:02:17 PM
You already have a prominent chin. It may actually need to be reduced if you advance the lower jaw.

If i bring my lower teeth infront of my upper teeth in a underbite position my jaw still looks recessed from a side profile. Does that mean i will need a really large advancement to get a proper result?
I kinda like my chin because it looks my big nose look a little better.