University of Khartoum

Cephalometric Features of Bimaxillary Protrusion in a Sudanese Sample

Cephalometric Features of Bimaxillary Protrusion in a Sudanese Sample

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Title: Cephalometric Features of Bimaxillary Protrusion in a Sudanese Sample
Author: Elhag, Salma Babiker Idris
Abstract: Introduction: Bimaxillary protrusion (BP) is a condition that results in protrusion of the teeth and lips and convexity of the face. There are two forms of BP, a dentoalveolar type and a skeletal type each requiring a different treatment plan. BP is observed mainly in Africans and Asians but it can be seen in other populations. Objectives: The aim of this study was to determine the pre-treatment cephalometric features for a sample of Sudanese adults with bimaxillary protrusion (BP) for clinical and research purposes. Materials and Methods: Pretreatment lateral cephalometric radiographs of 60 patients (30 males and 30 females) with BP (mean age 25.9 ± 6 years) were collected. The radiographs were manually traced and 30 measurements including skeletal, dental and soft tissue variables were assessed and compared to the Sudanese norms. The results were also compared to the cephalometric features of BP subjects from other populations. Results: The Sudanese subjects in this sample exhibited BP of dentoalveolar origin with a vertical growth pattern. There were significant differences in cephalometric values of Sudanese with BP when compared to Sudanese norms (p<0.05). These differences were mainly in the form of an increased upper and lower incisor protrusion (p<0.000), increased upper and lower lip protrusion (p<0.000) and increased upper and lower lip thickness (p<0.000). In general, females with BP showed an increased lower incisors protrusion (p<0.000) and reduced interincisal angle (p<0.000) when compared to males. In contrast, males with BP showed increase in upper facial height (p<0.001) and increase in lower lip length (p=0.047). In addition, the cephalometric features of the vii adult Sudanese BP subjects were also different in several variables when compared with other populations. Conclusion: Bimaxillary protrusion in the present sample of Sudanese with BP was found to be of a dento-alveolar type, which is amenable to orthodontic treatment. In addition, the BP Sudanese sample showed more protrusive features when compared to other populations.
Description: 79 Pages
URI: http://khartoumspace.uofk.edu/handle/123456789/17430
Date: 2015-12-03


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