Abstract
Objectives
The purpose of this work was to develop cephalometric standards of the vertical dimension of occlusion (VDO) in Moroccan adults.
Methods
Our data consisted of standardized lateral cephalometric radiographs of 98 students at the Casablanca Faculty of Dentistry. These included 74 women and 24 men aged 18–34 years, who were selected on the basis of a well-proportioned face, acceptable profile, Class I occlusion, minor or no crowding, and no history of orthodontic treatment. Mean values of seven (six angle and one linear) dentoskeletal parameters were determined from lateral cephalometric radiographs.
Results
These Moroccans tended to exhibit an opening in the VDO in comparison with the standards of Steiner and Wylie and those of other populations: GoGn/SN: 35.4° ± 5.3°, FMA: 25.6° ± 5.1°, Occ/SN: 19.3° ± 4.7°, Occ/Fr: 9.1° ± 4°, SGn/Fr: 59.2° ± 3.4°, ENA-Xi-Pm: 46.2° ± 4.4°, ENA-Me: 69.7 ± 5.9 mm.
Conclusion
Moroccans have distinct cephalometric characteristics, which should be used as the reference in future orthodontic and prosthetic treatments.
Zusammenfassung
Ziele
Ziel der Arbeit war es, an marokkanischen Erwachsenen kephalometrische Standards für die vertikale Dimension der Okklusion (“vertical dimension of occlusion”, VDO) zu entwickeln.
Methoden
Unsere Daten bestanden aus standardisierten Fernröntgenseitbildern (FRS) von 98 Studierenden der zahnmedizinischen Fakultät an der Universität Casablanca, Marokko. Die Probanden, 74 Frauen und 24 Männer im Alter von 18–34 Jahren, wurden nach folgenden Kriterien ausgewählt: gut proportioniertes Gesicht, akzeptables Profil, Klasse-I-Okklusion, kein bzw. kaum Engstand und keine frühere kieferorthopädische Behandlung. Für 7 dentoskelettale Parameter (6 Winkel, eine Distanz) wurden anhand der FRS Durchschnittswerte ermittelt.
Ergebnisse
Bei den im Rahmen der Studie untersuchten Marokkanern bestand im Vergleich zu sowohl den von Steiner und Wylie entwickelten Standards als auch zu denen anderer Populationen eine Tendenz zu einer Öffnung in der VDO: GoGn/SN: 35,4 ± 5,3°, FMA: 25,6 ± 5,1°, Occ/SN: 19,3 ± 4,7°, Occ/Fr: 9,1 ± 4°, SGn/Fr: 59,2 ± 3,4°, ENA-Xi-Pm: 46,2 ± 4,4°, ENA-Me: 69,7 ± 5,9 mm.
Schlussfolgerung
Bei Marokkanern bestehen ausgeprägte kephalometrische Charakteristika, die künftig als Referenzwerte bei der Planung kieferorthopädischer und prothetischer Behandlungen verwendet werden sollten.
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Lahcen Ousehal, ElMehdi Jouhadi, and Anas Bennani state that there are no conflicts of interest.
All studies on humans described in the present manuscript were carried out with the approval of the responsible ethics committee and in accordance with national law and the Helsinki Declaration of 1975 (in its current, revised form). Informed consent was obtained from all patients included in studies.
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Ousehal, L., Jouhadi, E. & Bennani, A. Vertical dimension of occlusion (VDO): cephalometric norms for a Moroccan population. J Orofac Orthop 77, 39–44 (2016). https://doi.org/10.1007/s00056-015-0006-0
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DOI: https://doi.org/10.1007/s00056-015-0006-0