Growth displacement of the maxilla in girls studied by the implant method


Iseri H., Solow B.

European Journal of Orthodontics, cilt.12, sa.4, ss.389-398, 1990 (Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 4
  • Basım Tarihi: 1990
  • Doi Numarası: 10.1093/ejo/12.4.389
  • Dergi Adı: European Journal of Orthodontics
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.389-398
  • İstanbul Yeni Yüzyıl Üniversitesi Adresli: Hayır

Özet

The sutural growth displacement of the maxilla between the ages of 8 and 21 years was studied on 14 series of lateral cephalometric films of girls from the Björk implant sample (Björk 1968). The assessment of growth changes was based on the method of superimposition described by Björk and Skieller (1983) supplemented by a new computerized debugging procedure.A new method for angular measurement of the forward displacement of the maxilla and the mandible is described here. The average forward displacement of the maxilla in relation to the anterior cranial base was 6 degrees from 8.5 to 17.5 years. The average path of displacement was inclined about 45 degrees in relation to the nasion-sella line from 8.5 to 14.5 years, and then changed to almost horizontal. The mean distance between anterior and posterior implant points showed a continuous shortening, totalling 0.6 mm for the period 8.5 to 15.5 years, due to maxillary rotation in the transverse plane. The timing of growth differed between the horizontal and vertical components of the maxillary growth translation. Horizontal displacement peaked at 11 and terminated at 18 years, whereas vertical displacement peaked at 12 and terminated at 15 years of age. © 1990 European Orthodontic Society.