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- W2384998197 abstract "Objective To study the effect of different forces on periodontal tissue and root resorption.Methods One hundred male Wistar rats were randomly divided into four groups(n=25 in each group):group A(0 g),group B(30 g),group C(50 g),group D(100 g).The model of orthodontic tooth movement was established after giving a force once a week for 3 weeks.The distances of orthodontic tooth movement were determined before and after adding the first forces for 1,3,7,14,21 d,respectively.And then the rats were executed to observe the periodontal tissue and root resorption by HE stain.Results The distances of orthodontic tooth movement showed a significant difference between A,B,C,D groups at 1,3,7,14,21 d.HE results showed that there were no significant changes in the periodontal tissue and root resorption in group A.The periodontal tissue rebuilt actively in groups B,C,while it was demolished severely in group D.In groups B,C,D,dental root surface was absorbed at 14,7,3 d,respectively,with Howship's lacunas and cementoclasts.Conclusion The different orthodontic forces have different effects on periodontal tissue and root resorption.When giving 50 g force,periodontal tissues respond actively and demolish slightly,teeth move expeditiously,and the area and degree of root resorption reflect lightly,which can offer a reference for choice of suitable orthodontics force in clinic." @default.
- W2384998197 created "2016-06-24" @default.
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- W2384998197 date "2009-01-01" @default.
- W2384998197 modified "2023-09-28" @default.
- W2384998197 title "An experimental study on effect of force on orthodontic treatment" @default.
- W2384998197 hasPublicationYear "2009" @default.
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