Is the pterygopalatomaxillary suture (sutura sphenomaxillaris) a growing suture in the fetus? |
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Authors: | C Vacher J P Onolfo J P Barbet |
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Institution: | 1. Anatomie, Service de Chirurgie Maxillo-faciale et Stomatologie, H?pital Beaujon, APHP Université Paris Diderot, Paris-7, AP-HP, 100 Bd Général Leclerc, 92118, Clichy Cedex, France 2. Histologie-Embryologie, Université Paris Diderot, Paris-7, Paris, France 3. Service d’Histologie Embryologie Cytogénétique et Anatomie Pathologique, H?pital St Vincent de Paul, APHP Université Paris Descartes, Paris-5, Paris, France
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Abstract: | The pterygopalatomaxillary suture is considered as having an important role in the posteroanterior growing of the maxilla.
To determine whether this suture is a growing suture in the fetus, we performed a histological study of this suture in a fetus
aged of 16 weeks of amenorrhea. Serial sections (5 μm) of the pterygopalatomaxillary suture area have been performed. Fibrous
sutures are separating four pieces of ossification (maxilla, palatine bone, lateral and medial plates of the pterygoid process).
A fibroblastic growing site has been observed on the dorsal aspect of the pterygopalatomaxillary suture, in contact to the
anterior border of the lateral plate of the pterygoid process. The posteroanterior growing of maxilla is dependent on a growing
suture located on the anterior border of the pterygoid process. The pterygoid process (via its lateral plate) makes the junction
between the maxilla and both the cranial base and the condylar mandibular site of growth. |
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