Variation of some mandibular traits related to masticatory muscle in Xiawanggang population

doi:10.16098/j.issn.0529-1356.2018.06.014

Abstract

Abstract:

Objective To understand the variation of some mandibular traits related to masticatory muscle of Xiawanggang population in Xichuan county, Henan province. Methods This study was conducted on 44 human mandibles of Xiawanggang population. Mandibular trait is divided into several types, which consist of extroversion of mandibular angle, tuberositas masseterica, tuberositas ptelygoidea and mental spine. And then comparisons are made among different time periods during the Holocene. Results Extroversion of mandibular angle, tuberositas masseterica, right tuberositas ptelygoidea and mental spine turn out mainly to be “obvious” type among Xiawanggang population. Conclusion The mandibular traits of Xiawanggang population related to masticatory muscle is mainly " obvious " type, which may reflect their big musculus masseter. Meanwhile it is suggested that the degree of those traits varies as time period goes by in Holocene.

Key words: Xiawanggang, Tuberositas masseterica, Tuberositas ptelygoidea, Mental spine, Anatomy, Human

LI Hai-jun HAO Shuang-fan FANG Lu-yu DAI Cheng-ping . Variation of some mandibular traits related to masticatory muscle in Xiawanggang population[J]. Acta Anatomica Sinica, 2018, 49(6): 782-785.

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