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- W2369999850 abstract "Objective To study the relative effects of genes and environment on the craniofacial morphology during the growth and development stage, discuss the possibilities and genetic limitations of the various orthodontic treatment so as to enhance the treatment level, especially for early treatment started in the mixed dentitions.Methods The sample used in this study consisted of lateral cephalograms of 89 pairs of female twins in Beijing.With a mixed longitudinal method, 183 pairs(MZ 110, DZ 73) of effective twins were obtained.The genetic and environmental effects were analyzed on craniofacial hard tissue morphology of female twins from six to twelve years old by twin statistical methods.Results Statistical analysis revealed that environmental factors had significant(P 0.05) effects on anterior-posterior position between lower and upper jaws(ANB and NAP), craniofacial depth(L1, L2 and L3), and posterior height of face(H2, H6 and SGo), whilst genetic effects showed significant impact on anterior(H1, H3, H4, H5, and NMe)and posterior(H2 and H7) face height(P 0.05).Conclusions Early orthodontic treatment may be effective to change anterior-posterior position between lower and upper jaws, craniofacial depth(especially the lower face depth), and posterior height of face.The relatively high inherited proportions of craniofacial height should be recognized , and this might be a resistance to the treatment, especially the front height of face." @default.
- W2369999850 created "2016-06-24" @default.
- W2369999850 creator A5070057867 @default.
- W2369999850 date "2009-01-01" @default.
- W2369999850 modified "2023-09-28" @default.
- W2369999850 title "Longitudinal genetic effects on craniofacial morphology in cephalograms of female twins from six to twelve years old" @default.
- W2369999850 hasPublicationYear "2009" @default.
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