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PubMed2002

[3-dimensional cephalometry in orthodontics. The current possibilities of Cepha 3DT software].

A 3D cephalometric analysis method from a scanner acquisition, has been developed thanks to a long collaboration between the CIRAD modeling Laboratory and Jacques Treil. The model of skeletal description is based on eight landmarks related to the neuromatrical axis of facial growth (heads of the mallei, supraorbital, suborbital, submental points); it has been abundantly described. The purpose of this work consists in presenting the dentoalveolar level of the analysis. The description and the marking of the arches and the teeth mainly rest on the systematic use of a mathematical tool, the calculation of the central matrix of inertia, and on three fundamental choices: the identification of the dental arches from their constituting teeth leaving aside any alveolar marking, the marking of each tooth relative to the arch, as it can be observed by the orthodontist's eye, and not relative to the craniofacial architecture, the definition of the position of each tooth by the orientation of its coronoradicular axis and not its sole buccal side, Their uses in orthodontics are numerous: diagnosis, choice of the mechanics, therapeutic simulation, therapeutic follow up, analysis of the findings... Clinical applications illustrate the theoretical presentation.

Cephalometry↗
PubMed1975

[Experience with cephalometry in the determination of labor in diabetic pregnant women].

Foetal biparietal diameter was measured with ultrasound techniques in 35 diabetic pregnant mothers. 203 measurements were compared to 589 dates values which were obtained in 100 normal pregnant women. There were no differences in the mean values of biparietal diameter and the weekly growth rates in comparison to non diabetic values. It was concluded at thin diabetic pregnancies in spite of the frequent occurrence of the macrosomie, the ultrasonic diagnostic approach is a suitable method for estimating of the foetal maturity.

Cephalometry↗