| 摘要 |
The invention relates to a method and apparatus for testing quality of an attachment between a dental crown (11) attached onto a surface of a tooth (14; 17). The method comprises: detecting at least one resonance frequency of a member (16, 20, 21, 31) in contact with said crown (11); and interpreting the detected resonance frequency in terms of the degree of attachment of the crown to a tooth. |
