Syed Mohammed Yaseen Ravindranath Acharya
10.1155/2012/860385
Case Rep Dent
2012;2012:860385.
CC BY
https://pubmed.ncbi.nlm.nih.gov/23119188/
PMC3479939
23119188
Hexa helix: modified quad helix appliance to correct anterior and posterior crossbites in mixed dentition
2012