Evaluation of Masticatory Function for Edentulous Patients

目的：本研究的目的是探讨与咀嚼效能有关的参数，即筛分法咀嚼效能的普适性（以下称为ME），通过具有35种食物的列表的食物摄入问卷法的咀嚼评分（以下简称MS），重体型硅橡胶印模材料充填无牙颌残留牙槽嵴后，在组织中与义齿边缘摩擦，全口义齿表面（以下简称BA）。此外，还探讨了通过测定复型的BA值来预测咀嚼效能的可能性。方法：选择日本牙科学校7个机构的262名全口义齿患者作为研究对象（平均年龄76.7±6.1岁 关于我们 ars old）.检测ME、MS和BA。讨论了三个参数之间的关系。分析每名受试者的MS，制定简易食物摄入量调查表。本文提出了一种模拟全口义齿使用者咀嚼效能的机械花生粉碎方法，并对Kapur提出的筛分方法进行了简化。结果：7个单位的平均年龄、ME、MS、BA值差异无显著性（p>0.05）。一元线性回归分析显示，咀嚼效能与牙基断面积呈显著正相关（r=0.41：p<0.01）。BA和MS的标准范围是根据受试者的等概率椭球值得出的。置信限为95%。有可能将清单中的食物数量从35种减少到25种。两种方法的相关系数为0.95（p<0.01）。提出了以花生颗粒在5号筛上的残留量为依据的简化筛分方法。Kapur法与改良法的相关系数为0.808（p<0.01）。结论：ME、MS、BA在咀嚼效能的测定中具有普遍性。结果表明，筛选法、食物摄入量问卷法和义齿基托面积法可用于咀嚼效能的诊断。少

Objectives : The purpose of this study was to investigate the universality of parameters concerning to masticatory performance, namely the masticatory efficiency by the sieving method (hereinafter referred to as ME), the masticatory score by the food intake questionnaire method having a list of 35 foods (hereinafter referred to as MS), and the basal area of the replica of the edentulous residual ridge which was obtained by the heavy body type silicone impression material filled and rubbed off against the denture border in the tissue surface of the complete denture (hereinafter referred to as BA). Moreover, it was discussed weather it is possible to predict masticatory performance by the measuring of BA of the replica. Finally, easy methods for evaluating methods for masticatory performance for complete denture wearers were developed.Methods : Two hundred and sixty two complete denture wearers in 7 institutions in Japanese dental school were selected as subjects (average age:76.7±6.1 ye … More ars old). They were examined their ME, MS and BA. The relationship among three parameters was discussed. MS of each subject was analyzed to develop easy food intake questionnaire method. A mechanical peanuts pulverization procedure was developed to simulate a complete denture wearer's masticatory efficiency, and the tries were performed to simplify the sieving method suggested by Kapur. The Kapur's method and the newly developed method were compared.Results : There were no significant differences among 7 institutes in the average age, ME, MS and BA of subjects (p>0.05). In single linear regression analysis, significant correlation were observed between the masticatory efficiency and the measurements of the basal area (r=0.41:p<0.01). The standard ranges of BA and MS were drawn from the values of the subjects in terms of the equiprobabitity ellipsoid. The confidence limits are 95%. It was possible to reduce the number of food in a list from 35 to 25 foods. The correlation between two methods was 0.95 (p<0.01). The simplified sieving method using the volume of peanuts particle remaining on the #5 mesh sieve was developed. The correlation between the Kapur's method and the newly developed method were 0.808 (p<0.01).Conclusion : It was confirmed that there was the universality in ME, MS and BA concerning to masticatory performance. It is suggested that the sieving method, the food intake questionnaire method and the basal area of the replica are useful for the diagnosis of masticatory performance. Less