[A scanning electron microscope assessment of the changes induced by wear on subsonic endodontic instruments].
The aim of the present work was to study the wear of a special kind of subsonic instruments with usage. We have examined with scanning electron microscope new and used instruments: the first to estimate the features and degree of final touches; the second to examine how they wear after 1, 3 and 5 minutes. We tested for each period 3 instruments per size. In all we controlled 72 instruments. The results of the study show that after 5 minutes the instruments are very worn.
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Istituto di Odonto-Gnatostomatologia, Università degli Studi di Firenze.
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Bertini
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D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012390:Root Canal Therapy / Q000295:instrumentation*; D013499:Surface Properties; D013997:Time Factors
Valutazione al MES delle modificazioni indotte dall'uso di strumenti endodontici subsonici.