Technical note: Canine Mesial Ridge (Bushman Canine) dental trait definition

Irish, Joel D.; Morris, Donald H.

doi:10.1002/ajpa.1330990202

Cited by 25 publications

(6 citation statements)

References 3 publications

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“…There are different scoring procedures for the deciduous and permanent dentitions described in the literature and in common use. Deciduous morphological observations were all made by Lease following written standards by Sciulli (1998), which supplement the photographs and descriptions of Hanihara (1960), Grine (1986), Morris (1996), andTurner et al (1991). Due to time constraints, characteristics of the permanent dentition were observed by Edgar following the Arizona State University Dental Anthropology System (Turner et al, 1991).…”

Section: Methodsmentioning

confidence: 99%

Correlations between deciduous and permanent tooth morphology in a European American sample

Edgar

Lease

2007

American J Phys Anthropol

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The expression of dental morphological characteristics is partially genetically controlled, and is assumed to be similar in deciduous and permanent dentitions. However, there are few published data comparing normal morphological variation between the two dentitions in the same individual. For the current study, data were collected from European Americans (N = 54) whose teeth were cast both as children and adults. We observed 19 trait expressions in deciduous and permanent dentitions. Deciduous traits were scored based on Hanihara's and Sciulli's descriptions, while permanent teeth were scored using the ASU dental anthropology system. The two dentitions' scores were compared using Goodman-Kruskal's Gamma (gamma) in the original, commonly used systems as well as in a new, shared scale to which the scores were converted. Observations were also dichotomized in both formats and compared using tetrachoric correlation. We expected high correlations between the two dentitions and for both statistics to yield similar results. For the original scores, gamma correlations vary from -1.0 to 0.68; tetrachoric correlations vary from 0.04 to 0.67. For the shared scale scores, gamma correlations range from -1.0 to 1.0 and tetrachoric correlations range between -0.47 and 0.8. Several traits showed no correlation in either test. Overall, categorical data analysis returned more positive moderate to high correlations than tetrachoric correlation analysis, and shared scale tests resulted in more correlations than did tests of data in the original scoring systems. These results reflect differences in commonly used scoring systems, variation in rarely occurring traits, different strengths of trait expression, and complex genetic/environmental interactions.

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Section: Methodsmentioning

confidence: 99%

Correlations between deciduous and permanent tooth morphology in a European American sample

Edgar

Lease

2007

American J Phys Anthropol

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“…De manera distintiva, el comportamiento de la cresta mesial canina o "canino de Bushman" ha sido uno de los rmdc más estudiado tanto en los caninos permanentes como deciduos. Su expresión describe de qué manera varía lo que en el contexto clínico odontológico se conoce como "reborde marginal mesopalatino" o "mesolingual", el cual traza su recorrido desde el tercio incisial -vertiente mesial del borde cuspídeo-hasta el tercio cervical [26,27], región en la que se observó una baja expresión de tubérculo dental y prácticamente ausencia del surco de interrupción; de esta forma, en la región cervical palatina y lingual se describió un cíngulo romo de baja altura en el que se unen las crestas…”

Section: A Frecuencia Y Variabilidadunclassified

Configuración morfológica de la superficie palatina y lingual de los caninos deciduos superiores e inferiores en un grupo de indígenas misak de Silvia (Cauca, Colombia): una mirada desde la antropología dental

et al. 2018

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Introducción: la caracterización de la morfología de los dientes deciduos y permanentes, a partir del estudio de los rasgos morfológicos dentales coronales (RMDC), ha sido de gran utilidad para estimar los procesos microevolutivos de los grupos étnicos contemporáneos.Objetivo: describir la configuración morfológica de la superficie palatina y lingual de los caninos deciduos superiores e inferiores en un grupo de indígenas Misak desde la mirada de la antropología dental.Materiales y método: estudio descriptivo transversal de la frecuencia, variabilidad, dimorfismo sexual, simetría bilateral y correspondencia de ocho RMDC de 60 modelos de estudio (37 femeninos y 23 masculinos) obtenidos de un grupo de indígenas Misak de Silvia (Cauca, Colombia).Resultados: se observó alta frecuencia de la cresta mesial canina (73,3% superiores y 70,0% inferiores), fosas palatinas (67,5%), fosas linguales (59,2%) y cresta central(67,5%superiores y 59,2% inferiores); bajas frecuencias de forma de pala(17,5%superiores y 10,8% en los inferiores), tubérculo dental (19,1% superiores) y cresta distal accesoria (32,5% superiores); y prácticamente ausencia de surco de interrupción(6.7%superiores y 3.3% inferiores), tubérculo dental (0,0% inferiores) y cresta distal accesoria (6,6% inferiores). No hubo dimorfismo sexual. Si hubo simetría bilateral.Conclusiones: La superficie palatina y lingual de los caninos deciduos superiores e inferiores configuró un patrón de dos crestas marginales (la mesial más pronunciada que la distal), una cresta central y dos fosas palatinas (linguales). Este patrón morfológico es característico en poblaciones de diferente origen étnico y que ocupan el mismo territorio en el suroccidente colombiano.

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“…The expression is observed in the variation of the mesial crest of the upper canines. The canine mesial ridge, the protostylid or "Bushman canine" was described by Morris in a population of Bushmen in South Africa [37]. The recording of this feature is done by ASU Bushman Canine plate [16], which describes such a way that the mesiolingual edge of the upper canine, similar in size to distolingual, can overcome and form a fold distal approximately 2/3 below the incisal surface, due to its junction with the dental tubercle.…”

Section: Mesial Canine Ridgementioning

confidence: 99%

Sexual Dimorphism in Human Teeth from Dental Morphology and Dimensions: A Dental Anthropology Viewpoint

Moreno-Gómez¹

2013

Sexual Dimorphism

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Technical note: Canine Mesial Ridge (Bushman Canine) dental trait definition

Cited by 25 publications

References 3 publications

Correlations between deciduous and permanent tooth morphology in a European American sample

Correlations between deciduous and permanent tooth morphology in a European American sample

Configuración morfológica de la superficie palatina y lingual de los caninos deciduos superiores e inferiores en un grupo de indígenas misak de Silvia (Cauca, Colombia): una mirada desde la antropología dental

Sexual Dimorphism in Human Teeth from Dental Morphology and Dimensions: A Dental Anthropology Viewpoint

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