Profesor: Dr. Ricardo Rivas Muñoz
| CONTENIDO GENERAL DEL CURSO | CONTENIDO DE LA UNIDAD | BIBLIOGRAFÍA | ARTÍCULOS REVISADOS | PALABRAS CLAVE | SECCIÓN: 1ª 2ª 3ª 4ª 5ª 6 |
1ª Sección de 6 que forman toda la Unidad de Instrumental
| CONTENIDO
DE LA UNIDAD 4:
4.1.Clasificación. Según la Organización Internacional para Normas (ISO) y Federación Dental Internacional (FDI) 4.2.Clasificación según Grossman
4.4.Descripción
de cada instrumento siguiendo la Clasificación de Grossman
4.3.1.Instrumentos de exploración
4.3.2.Instrumentos de extirpación
4.3.3.Instrumentos de ensanchado Instrumentos de níquel-titanio (NiTi)
4.3.4.Instrumentos para obturación
4.3.4.2.Activados por torno automático
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| PALABRAS CLAVE: | |
REGRESAR A: Activados por torno automático (giratorios y rotatorios)
ABSTRACT
DEFECTS IN GT ROTARY INSTRUMENTS AFTER USE: AND SEM STUDY.
Teresa Roberta Tripi, DDS, Antonio Bonaccorso, dds, Valeria Tripa, DDS, Gulielmo guido Condorelli, DDS, and Ernesto Rapisarda,MD,DDS.
Use rotary ni-ti instruments require frequent replacement. This laboratory studty evaluated defectsof GT Rotary instruments before and after usage. The instruments were fixed into custom-made holders and photographed in a sem at x260 to x12000 magnification at preset points. Instruments sizes with 1.0,0.8 and 0.6 taper and instrument sizes 35 with 1.2 taper were used in 12 canals.The used instruments were cleaned and then reexamined in a SEM as before. The precense of 11 types of conditions was scored from the pre and postusage photographs.
No instruments facturing or plastic deformation was observed during the test. The precence of debris, pitting and scraping changed significantly. Imperfections were found on used GTrotary instruments and the precense of defects (pitting, scraping, and bluntcutting edges) increased in all of the instruments. The behavior ofr GT rotary instruments with usage seems to be different, compared with that found in other instruments.
Tripi, T.R. et al. DEFECTS IN GT ROTARY INSTRUMENTS AFTER USE: AN SEM STUDY JOE December 2001;27(12):782-785. Disponible en: http://www.jendodon.com/article/S0099-2399(05)61042-4/abstract Consultado el 10 abril 2008
Investigado por Gustavo Díaz Sánchez, Alumno del grupo 2601 (2008), FES Iztacala, UNAM
| CONTENIDO GENERAL DEL CURSO | CONTENIDO DE LA UNIDAD | BIBLIOGRAFÍA | ARTÍCULOS REVISADOS | PALABRAS CLAVE | SECCIÓN: 1ª 2ª 3ª 4ª 5ª 6ª |