The reliability of cephalometric analysis using the Ortho Grid was assessed and compared with that of traditional tracing, digitization of radiographs and digitization of tracings. A total of fifty lateral skull radiographs were read using each of these methods on two different occasions. Use of the Ortho Grid was found to be the most reliable method in five of the seven measurements investigated.
Get full access to this article
View all access options for this article.
References
1.
BaumrindS. and FrantzR. C. (1971) The reliability of head film measurements, I. Landmark identification, American Journal of Orthodontics, 60, 111–127.
2.
BroadbentB. H. (1931) A new X-ray technique and its application to orthodontia, Angle Orthodontist, 1, 45–66.
3.
BroadwayE. S., HealyM. J. R. and PoytonH. G. (1962) The accuracy of tracings from cephalometric lateral skull radiographs, Dental Practitioner, 12, 455–460.
4.
CohenA. M. (1984) Uncertainty in cephalometrics, British Journal of Orthodontics, 11, 44–48.
5.
CoopeJ. W. (1983) The consistency of cephalometric assessments using the ortho grid, British Journal of Orthodontics, 10, 106–107.
6.
DahlbergG. (1940) Statistical methods for medical and biological students, Interscience Publication, New York.
7.
GravelyJ. F. and BenziesP. M. (1974) The clinical significance of tracing error in cephalometry, British Journal of Orthodontics, 1, 95–101.
8.
HoustonW. J. B. (1982) A comparison of the reliability of measurement of cephalometric radiographs by tracings and direct digitization, Swedish Dental Journal, 6, Supplement 15, 99–103.
9.
HoustonW. J. B. (1983) The analysis of errors in orthodontic measurements, American Journal of Orthodontics, 83, 382–390.
10.
McEwenJ. D. and MartinJ. (1967) The rapid assessment of cephalometric radiographs, Dental Practitioner, 17, 195–198.
11.
MillsJ. R. E. (1987) Principles and practice of orthodontics, 2nd edn. Churchill Livingstone, London.
12.
RichardsonA. (1981) A comparison of traditional and computerized methods of cephalometric analysis, European Journal of Orthodontics, 3, 15–20.
13.
SavageA. W., ShowfetyK. J. and YanceyJ. (1987) Repeated measures analysis of geometrically constructed and directly determined cephalometric points, American Journal of Orthodontics and Dentofacial Orthopaedics, 91, 295–299.
