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General Category => Functional Surgery Questions => Topic started by: BlueShark7 on December 31, 2014, 02:00:11 AM

Title: Posterior open bite
Post by: BlueShark7 on December 31, 2014, 02:00:11 AM

What causes this and how can it be fixed, if mandible is short as well?

Title: Re: Posterior open bite
Post by: notrain on January 02, 2015, 04:27:18 AM

cause: insufficient downward growth of posterior maxilla

cure: bimaxillary rotation advancement with downgraft of post. maxilla.

Title: Re: Posterior open bite
Post by: BlueShark7 on January 03, 2015, 12:46:05 AM

Quote from: notrain on January 02, 2015, 04:27:18 AM

cause: insufficient downward growth of posterior maxilla

cure: bimaxillary rotation advancement with downgraft of post. maxilla.

thanks notrain, so with the downgraft of post. maxilla, would that mean a segmental lefort?

Title: Re: Posterior open bite
Post by: notrain on January 03, 2015, 04:02:59 AM

why?

as far as i know segmental leforts are mainly used to widen or shorten the maxilla. if you just want to rotate the entire thing and drop it down, you don't need to cut into pieces.

Title: Re: Posterior open bite
Post by: PloskoPlus on January 03, 2015, 02:30:32 PM

Quote from: notrain on January 03, 2015, 04:02:59 AM

why?

as far as i know segmental leforts are mainly used to widen or shorten the maxilla. if you just want to rotate the entire thing and drop it down, you don't need to cut into pieces.

I think the OP thinks multiple chunks are taken out vertically.  It's just one wedge-shaped slice of bone removed, AFAIK.

Title: Re: Posterior open bite
Post by: BlueShark7 on January 03, 2015, 07:16:03 PM

Quote from: PloskoPlus on January 03, 2015, 02:30:32 PM

I think the OP thinks multiple chunks are taken out vertically.  It's just one wedge-shaped slice of bone removed, AFAIK.

Yeah that is what I meant. Why? Because front part of maxilla normal in projection and occlusal plane already at correct angle.