摘要
通过对人工根面龋实验研究，以确定１０％氟钼酸铵溶液的防龋作用。选择正畸减数双尖牙６０颗，分为五组。根面实验区分别用１０％氟钼酸铵、３８％氟化氨银、２％氟化钠、７．３％钼酸铵溶液及去离子水处理后，所有标本在混合培养的三种致龋菌菌液中形成人工根面龋。经对各组标本的软Ｘ射线照片图象分析、扫描电镜与波谱观测表明：１０％氟钼酸铵组与３８％氟化铵银组根面人工龋损相似，较其它组明显窄，而表面层增宽，表面较完整，孔洞少，钙离子相对含量也高。因此认为１０％氟钼酸铵溶液不仅对根面龋发生、发展有抑制作用，并克服了氟化氨银使牙齿着色的缺点，是预防根面龋较理想的试剂。
AbstractThe aim of this study is to determine the preventiveeffect Of F-Mo preparation on artificial rootsurfacecarles.60 premolar teeth extraced for orthodontic purposewere divided into five groups. A window was preparedon every tcoth. They were treated by 10%(NH_4)_2MoO_2F_4 , 38%Ag (NH_4)_2F, 2% NaF, 7. 3%(NH_4)_2MoO_4 and deionized water for 2 minutes andthree times. They were then put in the fluid containedcariogenic bacteria for 96 hours to produce root caries.The root surface lesion of every tcoth was examined andanalysed by micro-radiography , SEM and spectrum.The result showed that the lesion depth of thegroups treated by 10% (NH_4)_2MoO_2F_4 and 38%Ag(NH_4)_2F were significantly smaller than the othergroups, and the surface of windows are more integrateand smcoth, and mean mineral concentration is morehigher than those of the other groups.It can be concluded that 10% (NH_4 )_2MoO_2F_4 solu-tion has greater inhibit effect to the development of rootcaries, so as the 38% Ag(NH_4)_2F solution. But the for-mer discolored the tooth much less than the latter.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
1995年第5期274-276,共3页
Chinese Journal of Stomatology
