| 摘要 |
The interdental wedge is used for approximately localized tooth caries. It comprises a triangular prismatic body, in the walls of which micro-roughness surfaces are formed, having ski-like forms at their front ends (1), and at its rear end having a fixed prismatic or part of a truncated pyramid-like body (2) with a hole (3) in it. The ratio of the sections of the gripping to the operational part being: Sgr./S.op. = 4.5:7.5, wherein Sgr. is section of the gripping part (mm2), and S.op is the section of the operating part (mm2). 7 claims, 7 figures |
