297 :F1137-52 134
guide may also be useful.

Materials and methods Materials Aluminium foil (Al, 99.998%, 0.5 mm thick, Alfa Aesar, Ward Hill, MA, USA), acetone (C3H6O, 99.3%, Piochem, Giza, Egypt), sodium hydroxide (NaOH, 9899%, 39.997 g/mol, El Nasr pharmaceutical chemicals company, Cairo, Egypt), absolute ethanol (CH 3 CH 2 OH, 99.9%, 46.07 g/mol, Merck, Darmstadt, Germany), perchloric acid (HClO 4 , 7173%, Advent, Mumbai, India), oxalic acid dihydrate (H 2 C 2 O 4 2H 2 O, 99.82%, 126.07 g/mol, Advent, Mumbai, India), chromium trioxide extra pure (CrO 3 , 99%, 99.99 g/mol, Laboratory Rasayan, Gujarat, India), orthophosphoric acid (H 3 PO 4 , 85%, El Nasr pharmaceutical chemicals company, Cairo, Egypt), sulphuric acid (H 2 SO 4 , 9597%, Merck, Darmstadt, Germany), copper (II) chloride (CuCl 2 , 99%, 134.45 g/mol, Advent, Mumbai, India), hydrochloric acid (HCl, 37%, El Nasr pharmaceutical chemicals company, Cairo, Egypt), polymethyl methacrylate (PMMA) ( [CH 2 C(CH 3 )(CO 2 CH 3 )] n , Mw ~ 15,000, Sigma Aldrich, Darmstadt, Germany), polyurethane (PU) (Sigma Aldrich, St

TMJ Syndrome is also known as TMD Temporomandibular Disorder and refers to the pain, clicking and locking of the jaw
Sanchez-Fernandez, R., Davies, T.G., Coleman, J.O
Moujalled D, Strasser A, Liddell JR