Kumar, Sujeet Evaluation of friction in orthodontics using various brackets and archwire combinations-an in vitro study. [electronic resource] - Journal of clinical and diagnostic research : JCDR May 2014 - ZC33-6 p. digital Publication Type: Journal Article ISSN: 2249-782X Standard No.: 10.7860/JCDR/2014/7990.4364 doi