{"title":"[根据Björk (Jarabak)的和角的有用性]。","authors":"K B Reck, R R Miethke","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>The term sumangle (SA) according to Björk has been attributed in the literature to Jarabak. The term was not used by Björk in his original works. Because of the demonstrated relations the sumangle can be deducted from the simplified calculation SA = X + 360 degrees, whereby X is the angle between the reference lines NS-ML. Beside from this fact also the high unreliability of defining the necessary reference points makes the sumangle a questionable measurement of vertical skeletal development. Therefore other trigonometric parameters as for instance the Y-axis are preferable.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 1","pages":"61-4"},"PeriodicalIF":0.0000,"publicationDate":"1991-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Usefulness of the sum angle according to Björk (Jarabak)].\",\"authors\":\"K B Reck, R R Miethke\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The term sumangle (SA) according to Björk has been attributed in the literature to Jarabak. The term was not used by Björk in his original works. Because of the demonstrated relations the sumangle can be deducted from the simplified calculation SA = X + 360 degrees, whereby X is the angle between the reference lines NS-ML. Beside from this fact also the high unreliability of defining the necessary reference points makes the sumangle a questionable measurement of vertical skeletal development. Therefore other trigonometric parameters as for instance the Y-axis are preferable.</p>\",\"PeriodicalId\":77592,\"journal\":{\"name\":\"Praktische Kieferorthopadie\",\"volume\":\"5 1\",\"pages\":\"61-4\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1991-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Praktische Kieferorthopadie\",\"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":"Praktische Kieferorthopadie","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
根据Björk的说法，summangle (SA)一词在文献中被认为是来自贾拉巴克。Björk在他的原著中并没有使用这个词。由于所证明的关系，可以从简化计算SA = X + 360度中推导出总和，其中X为参考线NS-ML之间的夹角。除了这一事实之外，定义必要参考点的高度不可靠性也使summangle成为对垂直骨骼发育的可疑测量。因此，其他三角参数，如y轴，是可取的。
[Usefulness of the sum angle according to Björk (Jarabak)].
The term sumangle (SA) according to Björk has been attributed in the literature to Jarabak. The term was not used by Björk in his original works. Because of the demonstrated relations the sumangle can be deducted from the simplified calculation SA = X + 360 degrees, whereby X is the angle between the reference lines NS-ML. Beside from this fact also the high unreliability of defining the necessary reference points makes the sumangle a questionable measurement of vertical skeletal development. Therefore other trigonometric parameters as for instance the Y-axis are preferable.
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