31. In 2014 an alginate / nano-hydroxyapatite composite was synthesized and field-tested as an adsorbent for fluoride. 32. It is unfortunate that hydroxyapatite cannot, at least with current technology, be used as a dental restorative material. 33. The PP implant does not require to be covered and therefore avoids some of the problems associated with hydroxyapatite implants. 34. The inorganic part of bone is the mineral hydroxyapatite , Ca 10 ( PO 4 ) 6 ( OH ) 2. 35. Hydroxyapatite implants are spherical and made in a variety of sizes and different materials ( Coralline / Synthetic / Chinese ).36. By chemically attaching technetium-99m to MDP, radioactivity can be transported and attached to bone via the hydroxyapatite for imaging. 37. Osteoblasts produce an advanced type of bone matrix consisting of dense, irregular crystals of hydroxyapatite , packed around the collagen ropes. 38. Usually either calcium hydroxyapatite ( CaHAP ) or potassium phosphate ( K 2 HPO 4 ) are used as the reference standard. 39. The form of calcium in bones and bone meal is calcium-hydroxyapatite , which may be particularly effective for building bone. 40. Zinc phosphate slowly reacts with calcium cations and the hydroxyl anions present in the cement pore water and forms a stable hydroxyapatite layer.
