The compressive, flexural, torsional and dynamic torsional strengths of polycrystalline hydroxyapatite sintered at a temperature of 1300 ~ C for 3 h were found to be 509, 113, 76 and 68 MPa, respectively. The mechanical properties of polycrystalline hydroxyapatite are compared with those of cortical bone, dentine and enamel. SEM observation of the fracture surfaces indicates a predomination of transgranular failures.
Abstract. Mgs(CO3)4(OH)2(H20)4 (Dovez, Iran), monoclinic, P21/c , a = 10.105 (5), b = 8.954 (2), c = 8.378 (4)/I,, fi = 114.44 (5) °, Z = 2, Dr~ (flotation) = 2.25, Dx = 2.25 g cm -3. The H positions have been determined from three-dimensional X-ray data. The H atoms in the water molecules take part in a hydrogenbond system, while those in the hydroxyl groups do not.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.