All of the following is true about physical properties of dentin except: (A) Dentin has limited ability to distort and regain its shape, (B) Inorganic component comprises of plate shaped hydroxyapatite crystals of diameter 35nm and thickness 10 nm, (C) 90% of the organic collagenous component mainly consists of Type 1 collagenous fiber, (D) Non collagenous protein comprises of amelogenin
Answer is D. Non collagenous proteins of dentin are
Decorin and Biglycans ----Prevents premature mineralization
Dentin Phosphoprotein-----Acidic protein, helps in nucleation and crystal growth
Dentin Sialoprotein-----it is ameloblastin like protein containing 10% sialic acid and helps in crystal growth.