How Many MM Can Lower Jaw Be Expanded?

[randomvanish]

Like an osteotomy like bsso ?

 

[randomvanish]

i'm talking about only width, not anterior projection / advancement

 

[St. Wristcel]

At least 5mm

 

[Deleted member 4430]

0

 

[MedMaxxing]

Limit is 7mm at each side IIRC (so 14mm total bigonial width gain). But how much is feasible is dependent on each person. Limit being how far you can torque the condylar outward while staying within the bounds of your TMJ.

 

[randomvanish]

Limit is 7mm at each side IIRC (so 14mm total bigonial width gain). But how much is feasible is dependent on each person. Limit being how far you can torque the condylar outward while staying within the bounds of your TMJ.

it looks far more invasive and risky than angle implants.

Skeletal stability and complications of bilateral sagittal split osteotomies and mandibular distraction osteogenesis: an evidence-based review - Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews - NCBI Bookshelf

Complications: Persistent alveolar nerve disturbance occurred in 27% of participants after BSSO (four studies, n=1,109) and 2.9% of participants after MDO (one study, n=70). The number needed to harm for BSSO compared with MDO for this outcome was 4 (95% CI 3 to 5). Condylar remodelling occurred in 12% and condylar resorption in 2.9% of the BSSO group (three studies, n=425); condylar remodelling occurred in 12% and condylar resorption in 1.4% of the MDO group (one study, n=70). The number needed to harm for BSSO compared with MDO for condylar remodelling was 21 (95% CI 12 to 88). No data were available on temporomandibular joint dysfunction in the MDO group.


Stability: For postoperative months six to 12, mean skeletal relapse was 15% in the BSSO group (nine studies, n=222) and 17.1% in the MDO group (one study, n=13).

 

[MedMaxxing]

it looks far more invasive and risky than angle implants.

Skeletal stability and complications of bilateral sagittal split osteotomies and mandibular distraction osteogenesis: an evidence-based review - Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews - NCBI Bookshelf

Complications: Persistent alveolar nerve disturbance occurred in 27% of participants after BSSO (four studies, n=1,109) and 2.9% of participants after MDO (one study, n=70). The number needed to harm for BSSO compared with MDO for this outcome was 4 (95% CI 3 to 5). Condylar remodelling occurred in 12% and condylar resorption in 2.9% of the BSSO group (three studies, n=425); condylar remodelling occurred in 12% and condylar resorption in 1.4% of the MDO group (one study, n=70). The number needed to harm for BSSO compared with MDO for condylar remodelling was 21 (95% CI 12 to 88). No data were available on temporomandibular joint dysfunction in the MDO group.


Stability: For postoperative months six to 12, mean skeletal relapse was 15% in the BSSO group (nine studies, n=222) and 17.1% in the MDO group (one study, n=13).

And then you realize resorption in angle implants is basically guaranteed.

 

[randomvanish]

And then you realize resorption in angle implants is basically guaranteed.

yeah but at some point. i doubt if it will happen more than 2mm with fixation.