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Tropical Dental Journal - 1st Pan African international dental journal


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Published in French in Tropical Dental Journal Volume 38 - June 2015  pages 5-14

Sagittal photogrammetric evaluation of the soft tissue profile between two different racial groups: a comparative studySagittal photogrammetric evaluation of the soft tissue profile between two different racial groups: a comparative study est évalué 1 étoiles par les abonnés Tropical Dental Journal Online

Article Open access

Authors : J.S. Diouf, P.I. Ngom, M.S. Fadiga, A. Badiane, K. Diop-Ba, M. Ndiaye, F. Diagne - Senegal


Résumé

Introduction : Les analyses des tissus mous du visage réalisées à partir d’enregistrements photographiques (analyses photogrammétriques des tissus mous) ont montré un dimorphisme inter-racial et inter-ethnique ; et les standards caucasiens issus de ces analyses ne sont pas applicables à des sujets d’origine géographique, raciale ou ethnique différente. L’objectif principal de cette étude était de déterminer les variations photogrammétriques sagittales inter raciales entre sénégalais et marocains.
Matériels et méthodes : Il s’agit d’une étude transversale portant sur des étudiants sénégalais et marocains de la faculté de médecine, pharmacie et d’odontologie de Dakar. Sur chaque sujet sélectionné, un cliché photographique de profil standardisé a été pris ; puis des mensurations photogrammétriques réalisées sur papier à l’aide d’une réglette graduée. Les données recueillies ont été analysées grâce au logiciel statistique IBM SPSS 20.0. Les variables quantitatives ont été décrites par leurs moyennes et écarts-types. Un test t pour échantillon indépendant a été réalisé pour comparer les variables photogrammétriques selon le sexe et la race (nationalité). La signification est fixée à p = 0,05.
Résultats : Les sujets d’origine sénégalaise avaient une biprochéïlie significativement plus marquée que les populations d’origine marocaine. Ces dernières avaient un nez plus allongé et plus antérieur, un menton plus proéminent ainsi qu’une tendance plus marquée à la classe 2 cutanée.
Conclusion : Des études complémentaires pourraient inclure des sujets de tranche d’âge différente ce qui permettrait d’avoir des données comparatives longitudinales selon l’âge.

Abstract
Sagittal photogrammetric evaluation of the soft tissue profile between two different racial groups: a comparative study

Introduction: Facial soft-tissue analyses made from photographic records (photogrammetric analysis of the soft tissues) showed interracial dimorphism. Standard of these facial analyses, originally obtained from Caucasian might not be appropriate for the diagnosis and treatment planning of other groups of orthodontic patients. The purpose of this study was to compare the sagittal photogrammetric soft tissue profile characteristics between Senegalese and Moroccan adults.
Materials and methods: A cross-sectional study was performed in a group of Senegalese and Moroccan students in the Faculty of Medicine, Pharmacy and Dentistry of Dakar. Standardized facial-profile photographs were taken with each student in natural head position, centric relation, and relaxed lip posture. Twenty four linear parameters were measured on paper sheet using a graduated ruler. For each variable mean and SD were calculated. In addition independent samples t-test was performed to detect sexual and racial dimorphism. Results were regarded as significant at p = 0.05.
Results: Senegalese subjects had significantly more lips protrusion than Moroccan who had significantly a more elongated and more anterior positioned nose, a more chin prominence and a tendency to cutaneous class II than Senegalese.
Conclusion: Further studies including different age groups subjects would allow having longitudinal data according to age.

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