TY - GEN AU - Kumar,Avinash AU - Ghafoor,Hajra AU - Khanam,Arifa TI - A comparison of three-dimensional stress distribution and displacement of naso-maxillary complex on application of forces using quad-helix and nickel titanium palatal expander 2 (NPE2): a FEM study SN - 2196-1042 PY - 2017///1012 KW - Alloys KW - chemistry KW - Child KW - Computer Simulation KW - Computer-Aided Design KW - Cranial Sutures KW - physiology KW - Cuspid KW - Dental Arch KW - Dental Stress Analysis KW - Finite Element Analysis KW - Humans KW - Malocclusion KW - therapy KW - Maxilla KW - anatomy & histology KW - Models, Anatomic KW - Models, Biological KW - Molar KW - Nasal Bone KW - Nose KW - Orthodontic Anchorage Procedures KW - instrumentation KW - Orthodontic Appliance Design KW - Orthodontic Appliances KW - Palatal Expansion Technique KW - Palate KW - Palate, Hard KW - Skull KW - Tomography, X-Ray Computed KW - Zygoma N1 - Publication Type: Journal Article UR - https://doi.org/10.1186/s40510-016-0131-3 ER -