1987 Fiscal Year Final Research Report Summary
Studies on the Masticatory Efficiency of Denture -Application Messuring Device by Light Blooking method
| Project/Area Number |
60570909
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
補綴理工系歯学
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| Research Institution | Nihon University School of Dentistry at Matsudo |
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Principal Investigator |
YOSHIAKI Kato Nihon Univ. School of Dentistry at Matsudo, 松戸歯学部, 教授 (80049999)
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| Project Period (FY) |
1985 – 1987
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| Keywords | Masticatory faculty / masticatory Efficiency / Dust engineering / Particle size distribution / Light blocking method / 粒度分布測定法 |
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| Research Abstract |
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.
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