Journal article

Publication year: 1988

Pages: 362-368

Journal: European Journal of Orthodontics

Volume number: 10

Issue number: 4

ISSN: 0141-5387

eISSN: 1460-2210

Publisher: Oxford University Press

Abstract: 
The aim of this investigation was to ascertain whether in longitudinal studies ''articulate'' could be used as a substitute for various condylar landmarks in mandibular length measurements on centric occlusion lateral head films, thus avoiding additional mouth open roentgenograms for condylar survey. Profile roentgenograms of 40 boys (aged Mean = 12.1 years, s.d. = 1.1 years) with a Class II, division 1 malocclusion were analyzed before and three and a half years after orthodontic treatment (at least one year after retention). Centric occlusion and mouth open lateral had films were analysed. Mandibular length measurements from pogonion (pg) to three defined condylar landmarks (ondylion co, condylion superior cos and condylion posterior cop) and to articulare (ar) were compared. Irrespective of the variable used, mandibular length increased by an average of 11 mm during the examination period. Wide individual variations were found in mandibular length measurements for differences pg-condylar landmarks and pg-ar. The average difference between pg-co and pg-ar was 6.3 mm (s.d. = 2.6 mm) with a minimum of 1 mm and a maximum of 12 mm. The average differences were the same before and three and half years after orthodontic treatment. However, the individual difference in pig-co and pg-ar lengths varied considerably-in 10 percent of the subjects it was greater than 2 mm. Thus in longitudinal studies of ''individual cases'' condylar landmarks should be used in the analysis of mandibular length. Mouth open lateral headfilms would be needed to visualize the condyle for accurate measurements. In longitudinal studies comparing ''groups of subjects'' on the other hand ''articulare'' may be used as a substitute of various condylar landmarks in the analysis of mandibular length on centric occlusion lateral head films.

Harvard Citation style: STICKEL, A. and PANCHERZ, H. (1988) CAN ARTICULARE BE USED IN THE CEPHALOMETRIC ANALYSIS OF MANDIBULAR LENGTH - A METHODOLOGIC STUDY, European Journal of Orthodontics, 10(4), pp. 362-368

APA Citation style: STICKEL, A., & PANCHERZ, H. (1988). CAN ARTICULARE BE USED IN THE CEPHALOMETRIC ANALYSIS OF MANDIBULAR LENGTH - A METHODOLOGIC STUDY. European Journal of Orthodontics. 10(4), 362-368.