Yamamoto H, Sakae T, Takagi M, Otake S
Acta Pathol Jpn. 1984 Jan;34(1):47-53. doi: 10.1111/j.1440-1827.1984.tb02181.x.
The crystalline structures of 18 submandibular gland calculi were studied by radiomicrography , scanning electron microscope, and X-ray microdiffractometeric techniques. The following observations were made by SEM: Granular or globular structure was seen on the surface of all cases and pyramidal crystal in one case. In the inside, all showed lamellar pattern with amorphous nucleus in the center, and granular, plate-like and rhombohedral structures were also observed. X-ray microdiffractometeric analyses: Apatite was frequently observed in both outside and inside of the calculi. Whitlockite was next frequently detected and was seen more often in the inside. Brushite and weddellite were noted in the outside of calculi in one case each. Thus, it is suggested that brushite and weddellite were present in the front portion of calculus formation and then transformed into the more stable form e.g. apatite.
采用放射显微摄影术、扫描电子显微镜和X射线微衍射技术对18颗下颌下腺结石的晶体结构进行了研究。通过扫描电子显微镜观察到：所有病例的结石表面均可见颗粒状或球状结构，1例可见棱柱状晶体。结石内部均呈层状结构，中心为无定形核，还观察到颗粒状、板状和菱面体结构。X射线微衍射分析：结石的外部和内部均经常观察到磷灰石。其次是白磷钙矿，在结石内部更常见。透钙磷石和草酸钙镁石分别在1例结石的外部被发现。因此，提示透钙磷石和草酸钙镁石存在于结石形成的前期，然后转变为更稳定的形式，如磷灰石。
