Environmental and genetic effects on H plane in cephalograms of female&nbsp; twins from six to twelve years old

ZHAO Chan-yuan WANG Yang-yang WANG Mei-yan HUO Feng WANG Peng*

doi:10.16098/j.issn.0529-1356.2018.05.020

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Acta Anatomica Sinica ›› 2018, Vol. 49 ›› Issue (5) : 677-682. DOI: 10.16098/j.issn.0529-1356.2018.05.020

Anthropology

Environmental and genetic effects on H plane in cephalograms of female twins from six to twelve years old

ZHAO Chan-yuan¹ WANG Yang-yang¹ WANG Mei-yan² HUO Feng¹WANG Peng^1*

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Abstract

Objective To study the relative effects of environment and genes on the soft tissue H plane during the mixed dentitions, and to provide theoretical evidence to establish the correct teeth treatment plan. Methods The lateral cephalograms of one hunded and eighty-three female twins were studied. The environmental and genetic effects were analyzed on soft tissue profile by twin method . Results The influence of environmental factors was detected by measurement items of soft tissue nasal roots (H1), nasal vertex (H2),subnasal point (H4),lower lip pits（H9）, and soft tissue chin point (H10). The influence of environmental and genetic factors was detected by measurement items of lower lip pits（H9). Conclusion The upper and lower lips are detected to be influenced by environmental factors, whereas the lower lip pits are mainly by the environmental and genetic factors.

Key words

Soft tissue profile / H line / X-ray cephalometry / Twin

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ZHAO Chan-yuan WANG Yang-yang WANG Mei-yan HUO Feng WANG Peng. Environmental and genetic effects on H plane in cephalograms of female twins from six to twelve years old[J]. Acta Anatomica Sinica. 2018, 49(5): 677-682 https://doi.org/10.16098/j.issn.0529-1356.2018.05.020

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