TY - RPRT TI - Three-dimensional force systems from vertically activated orthodontic loops. AU - D Raboud AU - G Faulkner AU - B Lipsett AU - D Haberstock PY - 2001 DO - 10.1067/mod.2001.110810 UR - https://pubmed.ncbi.nlm.nih.gov/11174536/ ID - 11174536 ER -