Studies on the Masticatory Efficiency of Denture -Application Messuring Device by Light Blooking method

作者将近年来在粉尘工程中受到关注的挡光法应用于粉尘工程。因此，我研究了阻光法在口腔修复中的咀嚼效率。该方法的研究是用CMH-60和E-2500不同测量范围的传感器对标准样品、机械碎冰和糯米进行粒度分析研究。对这些样本进行了平均直径、对照直径、几何标准差和尺寸分布的检验。所以L总结了以下结果。1 .遮挡光法具有不影响样品的颜色、样式和表面，计数粒度小，重现率高的优点。这样就可以对咀嚼的样本进行计数，为咀嚼效率的研究提供了有效的依据。2 . CMH-60传感器测得单分散聚乙烯乳胶样品的SR-9.5和SR-20在数基上的平均直径分别为9.1和19.5um。这些样品在尺寸分布上趋向于单分散。在0-5um和0-20um的SiO2样品中，样品在粒度分布上趋于多分散。E-2500传感器，d.v.b920 μ m的单分散二乙烯苯样品在体积基础上的平均直径为1076.8 μ m。样品在粒度分布上趋向于单分散。在玻璃微珠上，32目聚散样品倾向于按尺寸分布聚散。4个CMH-60和E-2500传感器，1、6、12小时机械破碎后的大米平均粒度变小，随着粉碎时间的增加，平均粒度减小16%、50%和84%。采用CMH-60和E-2500传感器，对牙齿健康的人进行咀嚼试验。平均16%、50%和84%粒径随着咀嚼次数的增加而趋于小颗粒。随着咀嚼次数的增加，E-2500传感器的体积基减小量比CMH-60传感器大。

The auther,applying the light blocking method that is remarked on dust engineering in recent yeats. So I examinated the light blocking method masticatory efficiency in prothodontics. The studies of that method are resarch of standard samples,mechanical crushed tice and masticated rice by CMH-60 & E-2500 sensors that are different mesuring ranges on particles size analaysis. Thes sampies were examed mean diamater,control diamater,geometrical stanndard deviation and size distrabution.So L concludied follwing results. 1 The light blocking method has many merit that could be count particl sized not infuence on color,style and surcafe of sample,and tha could be count highly reappertance. So it can count samples of masticatied tice,that if validity for study of masticatory efficiency. 2 CMH-60 sensor,SR-9.5 and SR-20 of monodisperse polyethylen latex sample were 9.1 and 19.5um mean diameter on number base.These samples tended to monodisperse sample on sized distribution. On 0-5um and 0-20um polydisperese SiO2 sample samples tended to polydisperese on size distribution. 3 E-2500 sensor,D.V.B.920 um of monodisperese divinylbenzene sample was 1076.8 um mean diameter on volume base. The sample tend to monodisperse sample on size fitribution.On glass beads 14)32mesh polydisprese sample tended to polydisprese on sized distribution. 4 CMH-60 & E-2500 sensor,1,6,12 hours mechanical crushed rice ternded to small particle size on MEAN,16% ,50%, and 84% dimater by increasing crushed time. 5 CMH-60 & E-2500 sensor, mastication was studied by the man with healthy tooth codition.MEAN,16%,50%, and 84% diamater tend to small particles size by increasing storkes of mastication.E-2500 sensor tens to lagger than CMH-60 sensor in variable of volume base reduction by increasing storkes of mastication.