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Title: Nanoindentation study of the irrigants treated human premolar
Keywords: atomic force microscopy, nanoindentation, root canal treatment, EDTA, NaOCl, mechanical properties
Issue Date: 3-Jan-2008
Citation: HAIRUL NIZAM BIN RAMLI (2008-01-03). Nanoindentation study of the irrigants treated human premolar. ScholarBank@NUS Repository.
Abstract: Ethylenediamine tetraacetic acid (EDTA) and sodium hypochlorite (NaOCl) are the commonly used irrigants in the root canal treatment. The nanoindenter was used to probe the mechanical properties of teeth before and after treatments with the irrigants separately to find out its effects on dentin. Application of EDTA for 5 minutes was able to remove the smear layer formed during sample preparation. The mechanical properties also decreased for both top and bottom surfaces of dentin. The main reason might be due to demineralization and surface alterations. Application of NaOCl for 1 hour also removed the smear layer. Similarly, the mechanical properties decreased for both top and bottom surfaces. The main reason might be due to deproteination and surface alterations. The reduction of mechanical properties was also found to be dependent on distance from the pulp and not the planes of the tooth.
Appears in Collections:Master's Theses (Open)

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