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Results for “Maxillofacial Development”

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At least 163 records · Page 9Linked to original sources
PubMed1999

[Vertical development of the face and cervical spine. Diagnostic and therapeutic significance in orthodontics and maxillofacial surgery].

Vertical growth of the cervical spine, of the mandibula and the upper maxilla are normally anatomically and physiologically correlated. At a very early age the relationships are established between the cervical spine and the angle of the mandibula which is normally level with C2's antero-inferior angle. A parallelism can be noticed between the rhythms of the vertical growth of the cervical spine and the changes of the maxillary in relation to the skull. So relationships are gradually established between the palate level, the top of the odontoid, and the foramen magnum. These relationships are well objectivized on a lateral teleradiography by Delaire' analysis. Lateral teleradiography of the situation of the angle of the mandibula, in relation to the basis of the C2 body should be systematic. It provides much information concerning the growth potential of the condylar unit, and makes possible a differential diagnosis between true or false posterior vertical insufficiency (PVI) and true or false posterior vertical excess (PVE) and to recognize clinical types of skeletal class II and class III of vertical origin.

Adolescent↗
PubMed1965

CASE REPORT.

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Adolescent↗
PubMed1997

Development of Meckel's cartilage in the symphyseal region in man.

BACKGROUND: The aim of this work is to clarify the aspects which are at present most controversial about the development of the anterior segments of Meckel's cartilage, such as the role of and determination of the area that is incorporated in the development of the human mandible. METHODS: Light microscope studies were done on 25 embryos and human fetuses from the collection of the Institute of Embryology at the University Complutense of Madrid and the Department of Morphological Science from the University of Granada. Specimen length was between 18 and 125 mm crown-rump. RESULTS: During the embryonic period, Meckel's cartilages were placed in the midline of the mandibular arch but fusion was not observed between them. Ossification of Meckel's cartilage begins at the end of the embryonic period and is completed in the fetal period and the portion that participates in mandibular formation is determined. This segment extends from the mental foramen to near the midline of the mandible. In this region, on the dorsal surface of the symphysis, cartilaginous nodules that originate from Meckel's cartilage are isolated. CONCLUSIONS: The ventral portions of Meckel's cartilage do not fuse in the midline of the mandibular arch. These present endo- and perichondral ossification and the section from the mental foramen to near the midline (mandibular symphysis) participates in mandibular formation. The ventral ends of Meckel's cartilage, i.e., the ends nearest the midline, do not ossify and remain isolated on the dorsal surface of the fetal mandibular symphysis.

Cartilage↗
PubMed1994

Follow-up study of patients with Wiedemann-Beckwith syndrome with emphasis on the change in facial appearance over time.

We have carried out a follow-up study of 13 children with Wiedemann-Beckwith syndrome (WBS) using a standard protocol which included facial anthropometric measurements. We confirm that most patients with WBS do well and that their clinical abnormalities become less apparent with age. We suggest that there is a characteristic neonatal appearance in WBS and that the expected pattern of facial growth generally results in a normal appearance by mid- to late childhood. We tentatively propose that there is a distinct facial anthropometric pattern profile in WBS.

Anthropometry↗