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The principles of techniques for cleaning root (清洁根技术的原则).pdf

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Australian Dental Journal Supplement 2007;52:(1 Suppl):S52-S63 The principles of techniques for cleaning root canals GR Young,* P Parashos,† HH Messer‡ Abstract potential avenues of entry of micro-organisms into the root canal, and to entomb any remaining micro- Chemomechanical preparation of the root canal includes both mechanical instrumentation and organisms to prevent their proliferation. antibacterial irrigation, and is principally directed In recent times there have been significant toward the elimination of micro-organisms from the technological advancements to facilitate root canal root canal system. A variety of instruments and cleaning and shaping.5 New instruments have been techniques have been developed and described for developed employing superelastic alloys and novel this critical stage of root canal treatment. Since their introduction in 1988, nickel-titanium (NiTi) rotary engineering philosophies, and there has been a notable instruments have become a mainstay in clinical departure from the ISO standard 2 per cent taper endodontics because of their exceptional ability to (0.02mm per mm) instruments. When seeking evidence shape root canals with potentially fewer procedural for the effectiveness of root canal cleaning procedures, complications. Safe clinical usage of NiTi instru
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