AN IN VITRO COMPARATIVE EVALUATION OF A HAND FILE AND THREE ROTARY NILL INSTRUMENTS FOR REMOVING GUTTA PERCHA DURING ROOT CANAL RE-TREATMEN

Objective: To evaluate the efficacy of NITI mechanical rotary instrumentation and Hedstrom file for gutta percha removal using dearing technique.Method: Forty extracted human single rooted premolar, each with a single canal were selected.The samples were decoronated to SUNGLASSES leave 17 mm root and Instrumented with K-flles upto MAF 30 using step

Marine Argentina Cow Leather One Ear Headstall X-band radar based systems are well tested to provide information about sea state and bathymetry.It is also well known that complex geometries and non-uniform bathymetries provide a much bigger challenge than offshore scenarios.In order to tackle this issue a retrieval method is proposed, based on spa