A finite element study on the mechanical behavior of reciprocating endodontic files
Braz. j. oral sci
;
14(1): 52-59, Jan-Mar/2015. tab, graf
Artículo
en Inglés
| LILACS
| ID: lil-745784
ABSTRACT
To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS:
A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Real strain stress curves of St.St. 316L and NiTi were used in the analysis. Non-linear static analysis was performed to simulate the instrument inside root canal at an angle of 45° in the apical portion, and subjected to torsion of 0.3 N.cm.RESULTS:
Non-linear NiTi material showed super elasticity and high functionality in such applications. Very high levels of stress appeared in the file at 3 mm from the tip close to yield point.CONCLUSIONS:
St. St. 316L is not suitable for manufacturing reciprocating instruments. Modeling of the instrument with equivalent circular cross-sectional area did not affect results quality. Reciprocating instruments have short lifespan, thus manufacturers recommend using one file per tooth. Reciprocating instruments are recommended for less experienced dentist...
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Acero Inoxidable
/
Titanio
/
Endodoncia
/
Níquel
Límite:
Humanos
Idioma:
Inglés
Revista:
Braz. j. oral sci
Asunto de la revista:
Odontología
Año:
2015
Tipo del documento:
Artículo
País de afiliación:
Egipto
Institución/País de afiliación:
National Research Centre/EG
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