love it when you add humor! great knowledge and great spirit! thanks!

thank you very much for the effort ....you really do a great job !

Thank you !

Thanks alot.

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Hello.. is that the only video about mechanics orthodontic tooth movement ? because I have final research on Application of mechanic orthodontic on different tooth movement ? if you could help me and give me some source . Really Thank you for this video

Plz try to improve audio level