A Preliminary Description of the Dental Morphology of the Peruvian Indian

Abstract

SYNOPSIS IN INTERLINGUA

DESCRIPTION PRELIMINARI DEL MORPHOLOGIA DENTAL IN INDIANOS DE PERU.—Le dentes del indianos de Peru es grande. Lor incisores es in forma de pala. Crestas labio-marginal es frequente (pala duple e tres quartos de pala duple). Incisores lateral in forma de barril se trova occasionalmente. Multe molares M¹ ha 4 cuspides, con reduction del magnitude del hypocono in un medietate del casos.

Le molares M2 e M3 monstra hypoconos minus frequentmente. Un medietate del molares M3 ha tres cuspides. Le cuspide de Carabelli in le molar M¹ es infrequente, e generalmente su expression es non plus que intermedie. Le molares M2 e M³ es usualmente disproviste de cuspides de Carabelli. In 70 pro cento del molares Mi, le configuration es Y5; in 30 pro cento, illo es +5. Le molares M2 e M3 frequentemente monstra le configuration +5. Nulle caso de configuration Y4 esseva incontrate. Un protostilido esseva trovate in numerose dentes. In le molares M₁, M2, e M₃, su frequentia amontava a 70, 45, e 13 pro cento, respectivemente.

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