A method is described for superimposing and comparing serial lateral cephalometric films using de Coster's line, the Adams Blink Comparator and correction for vertical movements of Nasion due to growth. Using the method no significant change (P < 0·05) was recorded in Cranial Base Angle for a group of 85 subjects between 5 and 15 years. It is suggested that the method may remove inaccuracies due to vertical movements of Nasion.
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References
1.
AdamsC. P. (1968) A new look at the growth and development of the skull, jaws and dental arches, Dental Practitioner, 19, 146–148.
2.
BjörkA. (1960) Introduction to Orthodontics, Ed. LundströmA., London: McGraw-Hill.
3.
BroadbentB. H. (1931) A new X-ray technique and its application to orthodontia, Angle Orthodontist, 1, 45–66.
4.
BroadbentB. H. (1937) The face of the normal child, Angle Orthodontist, 7, 183–207.
5.
de CosterL. (1953) A new line of reference for the study of lateral facial teleradiographs, American Journal of Orthodontics, 39, 304–306.
6.
HopkinG. B. (1962) Observation on the stability of de Coster's line and its value as a registration line for the superimposition of serial tracings of lateral skull roentgenographs, Transactions of the European Orthodontic Society, 208–216.
7.
KerrW. J. S. (1976) M.D.S., thesis, Queens University, Belfast.
8.
RickettsR. M., BenchR. W., HilgersJ. J. and SchulholfR. (1972) An overview of computerized cephalometrics, American Journal of Orthodontics, 61, 1–28.
9.
ScottJ. H. (1967) Dento-facial Development and Growth, Oxford: Pergamon Press.
10.
WalkerG. F. (1972) A new approach to the analysis of cranio-facial morphology and growth, American Journal of Orthodontics, 61, 221–230.
