Heredability of dental morphologic traits in a group of Colombian families
##plugins.themes.bootstrap3.article.details##
PURPOSE: The aim of this descriptive study was to identify the heredability and frequency of appearance of eight dental morphological traits: Carabelli’s tubercle, shovel, protostylid, hypocone, deflecting wrinkle, Cusp 5, Cusp 6 and Cusp 7, in a group of Colombian families. METHODS: The sample consisted of 68 people with at least consanguinity in one degree, who belonged to 17 families. The number of subjects for each characteristic evaluated was different due to the absence of some teeth or to the presence of extensive repair. All the people were taken dental casts from the upper and lower arches in type-III plaster. In order to observe the traits, an odontoscope at 40x was used. Data were analyzed through descriptive statistics (the frequency of findings) and the Chi square test (the degree of heredability of the characteristics among members of a same family group). RESULTS: It was found that the majority of the individuals were heterozygote regarding the dental traits, and the some characteristics had a notable preponderance: Carabelli’s trait, hypocone, protostylid and Cusp 5. When heredability was evaluated, it was appreciated that five of the characteristics analyzed showed significant differences compared to the Mendelian model; that suggests there is a non-unigenic transmission. As for the distribution of the characteristics, high frequency was found for Carabelli’s trait (60%), hypocone (100%), and protostylid (100%).
rasgos morfológicos dentales, tubérculo de Carabelli, incisivo en pala, protostylid, hipocono, pliegue acodado, cúspide 5, cúspide 6, cúspide 7, heredabilidad, antropología física, antropología dental, genéticaCarabelli’s trait, shovel, protostylid, hypocone, deflecting wrinkle, cusp 5, cusp 6, cusp 7, heredability, genetics, dental anthropology, physical anthropology, dental morphological traits
2. Turner II CG. Dientes y prehistoria en Asía y América. Investigación y Ciencia 1989 May; 1(151): 76–83.
3. Turner II CG. Peopling of the world and the origin of modern humans: The dental evidence. Acta Anthropol 1992 Apr–May; 5(2): 477-89.
4. Turner. II CG. Advances in dental search for native American origins. Acta Anthropol 1984 May; 8(1- 2): 23-7.
5. Cerón CJ. Estudio de las características cefalométricas, dentales y genéticas entre un grupo de indígenas Embera del río Saija y un grupo de Santafé de Bogotá. Trabajo de posgrado en ortodoncia. Director: Zagarra J. Bogotá, D. C., Colombia: Pontificia Universidad Javeriana, Facultad de Odontología, 1996.
6. Herrera E, Osorno M. caracterización cefalométrica y dental de un grupo de mestizos caucasoides habitantes en Santafé de Bogotá. Trabajo de grado en odontología. Bogotá, D. C., Colombia: Universidad Nacional de Colombia, 1994.
7. Lee G. The inheritance of dental traits in a Chinese population in the United Kingdom. J Med Gen 1972; 9: 336-9.
8. Harris J. Mesodistal crown diameters of permanent teeth in male American Negroes. Am J Orthod 1991 Jul; (76): 95-9.
9. HaniharaT. Negritos, Australian aborigines, and the “proto-sundadont” dental pattern: The basic populations in East Asia, V. Am J Phys Anthropol 1992 Jun; 88(2): 183-96.
10. HaniharaT. Dental and cranial affinities among populations of East Asia and the Pacific: the basic populations in East Asia, IV. Am J Phys Anthropol 1992 Jun; 88(2): 163-82.
This work is licensed under a Creative Commons Attribution 4.0 International License.