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An update on endodontics: 1. Endodontic diagnosis and preparation.

In recent years manufacturers have responded to an increase in endodontic treatments by developing a number of new products. New techniques have also been introduced. In this two-part article the author critically reviews these developments. In Part 1 he looks at diagnosis of endodontic problems and outlines root canal preparation techniques. In Part 2 he will examine file designs and techniques for root canal obturation.