{"title":"在实施龋齿预防计划4年后,对20个社区5819名学童的观察结果显示dmf水平有所下降。","authors":"T M Marthaler","doi":"","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":75903,"journal":{"name":"Helvetica odontologica acta","volume":"16 2","pages":"45-68"},"PeriodicalIF":0.0000,"publicationDate":"1972-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Decrease of DMF-levels 4 years after the introduction of a caries-preventive program, observations in 5819 schoolchildren of 20 communities.\",\"authors\":\"T M Marthaler\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\",\"PeriodicalId\":75903,\"journal\":{\"name\":\"Helvetica odontologica acta\",\"volume\":\"16 2\",\"pages\":\"45-68\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1972-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Helvetica odontologica acta\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Helvetica odontologica acta","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}