发明名称 DEVICE FOR MEASUREMENT OF THE DISPLACEMENT OF A TOOTH
摘要 The present invention relates to a device to make possible measurement of the movability and displacement of a tooth and/or teeth. The invention utilizes a source, generating an electromechanical propagation, for instance laser beams or the like while the tooth is held at a fixed position in relation to the source and to means, registrating the reflections of the source in the tooth.
申请公布号 US3875420(A) 申请公布日期 1975.04.01
申请号 US19730400166 申请日期 1973.09.24
申请人 SAID BJELKHAGEN AND SAID ABRAMSON TO SAID RYDEN 发明人 RYDEN, HANS;BJELKHAGEN, HANS INGMAR;ABRAMSON, NILS H. L.
分类号 G01B11/00;A61C7/00;A61C19/04;(IPC1-7):G02F1/28 主分类号 G01B11/00
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