Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 367-372

Zeitschrift: European Journal of Orthodontics

Bandnummer: 18

Heftnummer: 4

ISSN: 0141-5387

eISSN: 1460-2210

Verlag: Oxford University Press

Abstract: 
This longitudinal investigation was undertaken to assess the reliability of the Frankfort Horizontal line (FH) when using either anatomical Porion (Po-a) or machine Porion (Po-m) as reference landmarks. Lateral head films (22 pairs) from subjects at the ages of 11 and 14 years were analysed twice. The results revealed that: (i) the registration error of Po-a was larger than of Po-m; (ii) for Po-a the registration error from the 11 year head films was approximately twice as large as from the 14 year head films; (iii) Po-m was, on average, located similar to 9 mm below and 2 mm anterior to Po-a; (iv) during the 3 years of observation, Po-m changed its position downward markedly more than Po-a; (v) due to the diverging location of machine Porion (Po-m) in relation to true Porion (Po-a) and the large change of Po-m with time, the FH was affected considerably. It was concluded that machine Porion was unsuitable for the construction of the FH, A misjudgement of the reference line may result in diagnostic misinterpretations and lead to false conclusions in longitudinal studies, e.g. when the outcome of a particular treatment procedure is evaluated.

Harvard-Zitierstil: Pancherz, H. and Gokbuget, K. (1996) The reliability of the Frankfort Horizontal in roentgenographic cephalometry, European Journal of Orthodontics, 18(4), pp. 367-372

APA-Zitierstil: Pancherz, H., & Gokbuget, K. (1996). The reliability of the Frankfort Horizontal in roentgenographic cephalometry. European Journal of Orthodontics. 18(4), 367-372.