Part 5 Basic instruments and materials for root canal treatment | 合法醫療器材資訊網

由PCarrotte著作·2004·被引用24次—Fromlefttoright;frontsurfacereflectingmirror;DG16endodonticprobe;Westernprobe;CPITNprobe;endo-lockingtweezers;longshank ...

For many years the standard cutting instruments have been the reamer, K-type file and Hedstroem file. These root canal preparation instruments have been manufactured to a size and type advised by the International Standards Organisation (ISO). The specifications recommended are complex and differ according to the type of instrument. For most standardized instruments the number refers to its diameter at the tip in one-hundredths of a millimetre; a number 10, for example, means that it has a tip diameter of 0.10 mm. Colour coding originally denoted the size, but now represents a sequence of sizes. All these instruments have a standard 2% taper over their working length.

Recent changes in both metallurgy and endodontic concepts have led to the introduction of a range of new instruments which do not conform to these specifications. These are described individually later and in Part 7. These instruments have bee...