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TOPOGRAPHY AND MORPHOMETRY OF THE STRICTURES OF THE PTERYGOPALATINE FOSSA IN KOREANS

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Abstract

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Maxillary osteotomy(LeFort, ¥°, ¥±, ¥²) is a commonly performed maxillary surgical
procedure for the correction of dentofacial deformities. Maxillary osteotomy necessitate
seperation of the skeleton of the middle third of the face from its posterior attachments
to the cranium. With conventional techniques, an osteotome is placed between the
maxilla and pterygoid plates and tapped medially and anteriorly to separate the
pterygomaxillary junction. To separate the pterygomaxillary junction safely, knowledge
on the anatomical structures of the pterygopalatine fossa area is very important to
surgeons.
So, to clarify the anatomical structures as it relates to surgical approach of the
pterygomaxillary junction area, Korean skulls(male 110 sides, female 44 sides were used.
And 30 side of Korean hemisectioned heads were dissected to study about the
anatomical and surgical structures of the pterygopalatine fossa area.
Suggestions are given regarding the prevention of complication during the maxillary
osteotomy. Results of the studies indicate that with regard to the course of the
maxillary artery and the morphology of the pterygomaxillary junction, pterygomaxillary
dysjunction would be safely done with pterygomaxillary osteotome of 15mm width in
Koreans. And osteotomy should be angled inferiorly from the zygomaticomaxillary crest.
This will minimize the risk of the damaging the pterygopalatine fossa area because the
mean distance form the inferior border of the pterygomaxillary junction to the furcation
of the descending palatine artery was 24.8§®.

pterygopalatine fossa; pterygomaxillary junction; greater palatine foramen; maxillary artery; Maxillary osteotomy; Koreans;

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