Kerr’s development of the first endodontic instruments Table 4.2 Timeline of the development of different generations of root canal shaping instruments. GroupĮngine‐driven – adapting to canal anatomy Table 4.1 Classification of shaping and cleaning instruments, based on ISO 3630‐5. Table 4.1 shows a classification of shaping instruments based on ISO 3630‐5, whilst Table 4.2 provides a timeline of the key dates in their development. This chapter restricts itself to root canal shaping instruments and concepts. The main problem encountered during shaping is the production of dentine debris, potentially leading to procedural mishaps. Dedicated endodontic instruments have been manufactured for this purpose. The aim of shaping is to create space for irrigant delivery in order to clean and disinfect the root canal system, and then for the placement of filling materials.
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