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Bimaxillary protrusion in the Palestinian population.

Emad Hussein1, Mahmoud Abu Mois

  • 1Department of Orthodontics, Arab American University, Palestine. imad_alkhalek@yahoo.com

The Angle Orthodontist
|August 10, 2007
PubMed
Summary

Palestinian adults do not exhibit bimaxillary protrusion compared to Caucasian norms. Cephalometric analysis indicates these Caucasian standards are applicable to the Palestinian population, aiding facial analysis.

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Area of Science:

  • Orthodontics and Dentofacial Orthopedics
  • Anthropology
  • Cephalometric Analysis

Background:

  • Bimaxillary protrusion, characterized by the forward positioning of both upper and lower jaws, is a significant craniofacial feature.
  • Establishing population-specific cephalometric norms is crucial for accurate diagnosis and treatment planning in orthodontics.
  • Previous research has defined Caucasian cephalometric norms, but their applicability to other ethnic groups, such as Palestinians, requires investigation.

Purpose of the Study:

  • To determine the prevalence of bimaxillary protrusion in the Palestinian population.
  • To compare cephalometric measurements of Palestinian adults with established Caucasian norms.
  • To assess the suitability of Caucasian cephalometric standards for evaluating Palestinian facial structures.

Main Methods:

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  • A sample of 79 adult Palestinian university students with normal occlusion was selected.
  • Standardized cephalometric radiographs were obtained for each participant.
  • Key cephalometric parameters, including the interincisal angle and lip positions, were analyzed and compared to Caucasian reference values.

Main Results:

  • The interincisal angle was found to be decreased in Palestinian women compared to Caucasian means.
  • Despite variations in the interincisal angle, no significant extraoral lip protrusion was observed in the Palestinian sample.
  • Palestinian participants did not exhibit bimaxillary protrusion features when assessed against Caucasian cephalometric norms.

Conclusions:

  • Palestinian adults do not present with bimaxillary protrusion features relative to Caucasian cephalometric norms.
  • The established Caucasian cephalometric norms can be reliably applied to the Palestinian population for diagnostic purposes.
  • This finding supports the use of existing norms in orthodontic and craniofacial analyses involving Palestinian individuals.