Summary
The aim of this study was to compare the location of the occlusal plane (OP) in a eugnathic Chilean population using Steiner, Ricketts, and Delaire cephalometric analysis. A cross-sectional study was carried out and ninetysix digital cephalometric radiographs from 47 male and 49 female young adults between ages 18 and 35 were analyzed to determine the location of the OP according to Steiner, Ricketts and Delaire cephalometric parameters. Cephalometric tracings were obtained with Adobe® Photoshop® CC, version 14.2.1 for all three analysis. Screen Calipers version 4.0© 2006 software was used to measure the distance in millimeters from the OP to a midpoint between the first and second inferior premolars cusps for Delaire analysis. For Steiner and Ricketts angle measurements, software Screen Protractor version 4.0© 2006 was used. Mean and Standard Deviation Tests for Steiner analysis showed that the mean angle between SellaNasion plane and OP was 17.16° (cephalometric norm 14.5±3°). The mean angle between Frankfurt plane and OP was 6.98° (cephalometric norm 7.5±2°) for Ricketts analysis. In Delaire analysis, the distance in millimeters from the OP to a midpoint between the first and second inferior premolars cusps obtained was 1.76 mm, which differs from the theoretical reference (0±1 mm). The mean angle of the occlusal plane obtained is within the average standards for Steiner and Ricketts analysis. The mean distance in millimeters obtained from the OP to a midpoint between the first and second inferior premolars cusps in this study differs from the theoretical reference reported in Delaire analysis. Further studies are recommended to study more appropriate cephalometric norms for the Chilean population that would improve diagnosis and treatment plans in different areas of the dentistry field.
KEY WORDS: occlusal plane, cephalometry, eugnathic, Chilean.
How to cite this article
MORA, F. N.; SCHULZ, R. R.; CERDA, P. B.; RIVERA, R. M.; LÓPEZ, G. J.; MARTÍNEZ, A. V. & ROMO, O. F. Study of the occlusal plane in a Chilean population using the cephalometric analysis of Steiner, Ricketts and Delaire. Int. J. Odontostomat., 9(3):379-384, 2015.
