CAJ | 학술논문

采用硼硅酸盐玻璃体系制备低熔钛专用体瓷,研究了体瓷组成与热膨胀系数的关系,并采用XRD和细胞毒性实验分别研究了钛体瓷的晶相组成和生物相容性。结果表明,钛体瓷为不含晶体的均质玻璃体,其热膨胀系数随SiO2含量的增加而减小;通过对比两种配方的烧结温度与力学性能,最终确定体瓷配方和烧结工艺：自制钛体瓷的烧结温度为760℃,抗弯强度、断裂韧性和维氏硬度分别为（85±4.07）MPa、（1.44±0.04）MPa/m1/2和（3904±21.71）MPa/mm2,硬度稍高于天然牙釉质。XRD结果表明自制钛体瓷为不含晶体的均质玻璃体;细胞毒性为0级,对细胞无抑制作用,可望进一步应用于临床修复。
채용붕규산염파리체계제비저용태전용체자,연구료체자조성여열팽창계수적관계,병채용XRD화세포독성실험분별연구료태체자적정상조성화생물상용성。결과표명,태체자위불함정체적균질파리체,기열팽창계수수SiO2함량적증가이감소;통과대비량충배방적소결온도여역학성능,최종학정체자배방화소결공예：자제태체자적소결온도위760℃,항만강도、단렬인성화유씨경도분별위（85±4.07）MPa、（1.44±0.04）MPa/m1/2화（3904±21.71）MPa/mm2,경도초고우천연아유질。XRD결과표명자제태체자위불함정체적균질파리체;세포독성위0급,대세포무억제작용,가망진일보응용우림상수복。
The titanium dentin porcelain was synthesized through normal melting-derived route using borate-silicate system.The porcelain was characterized by thermal expansion,X-ray diffraction and cytotoxicity tests.The thermal expansion coefficient of dentin porcelains decreased with the increasing concentration of SiO2.The effects of sintering temperature on mechanical properties of titanium dentin porcelain were studied.Three-point bending strength,fracture toughness and vickers hardness obtained at 760℃ were（85±4.07）MPa,（1.44±0.04）MPa/m1/2 and（3940±21.71）MPa,respectively.The results of X-ray diffraction showed that the dentin porcelain is homogeneous vitreous and without crystalloids.The methyl thiazolyl tetrazolium assay results demonstrated that the cytotoxicity of the titanium porcelain was ranked as 0.At the same time,the titanium porcelain was compatible to cells.The titanium dentin porcelain synthesized in this research could be used for dental implant materials.