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Prof Dra Martha Siragusa Od Mg. Gabriela Racciatti
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Universidad Nacional de RosarioFacultad de Odontología
Carrera de Post-Grado de Especialización enEndodoncia
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En estudios previos con instrumentos manuales de acero inoxidable; flexibles y de níquel-titanio.....
Siragusa M,Prado N,Racciatti G. EJDR N°3-1998, Art. 15 www.uv.es/estomatología
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INSTRUMENTOS:.
Limas Lisas tipo K ( Maillefer-Swiss)Limas Flexibles ( Maillefer -Swiss )Limas Ni-Ti ( Sweden )
Decontaminados en hipoclorito de sodio al 10%,enjuagadosesterilizado en estufas de calor seco a 160° durante 1h.Ciclo repetido por 5 veces.
Examinados con MEB pre-ensayo
Examinados con MEB post ensayo
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Instrumentos Rotatorios
Segunda Parte
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Instrumentos Rotatorios de N T
Serie LIGHT SPEED San Antonio TexasSerie PRO FILE 04 Dentsply Maillefer BallaiguesSerie RBS .Moyco- Union Broach
Limas lisas tipo K acero . Maillefer -Swiss.
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Acero inoxidable pre experiencia
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Acero inoxidable post experiencia
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Ligth Speed pre experiencia
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Ligth Speed post experiencia
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Pro File pre experiencia
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Pro file post experiencia
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RBS pre experiencia
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RBS post experiencia
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residues nicks bubbles porosities stains
#15 white
#30 blue
#40 black
Group 1 Before tratments
residues nicks bubbles porosities stains
#15 white
#30 blue
#40 black
Group 1 After tratments
Instrumental acero inox.
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residues nicks bubbles porosities stains
# silver
# red
# black
Group 2 Before tratments
resi
dues
nick
s
bubb
les
poro
sitie
s
stai
ns
# silver
# red
# black
Group 2 After tratments
Ligth Speed
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residues nicks bubbles porosities stains
# black
# blue
# white
Group 3 Before tratments
residues nicks bubbles porosities stains
# 40 black
#30 blue
#15 white
Group 3 After tratments
Pro File
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Grupo 4 RBS
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Análise Morfométrica da Corrosǎo de Três instrumentos Rotatorios de Níquel-TitânioCosta C, Alonso Falleiro N, dos Santos M, ECLER Endod.vol2,n°1 São Paulo 2000 ISSN 1516-4055
Usaron 4 marcas de instrumentos rotatorios,con una decontaminación previa con glutaraldehido a 2% por 30 mm, lavados con agua corriente y colocados en autoclave en frascosabiertos.
Concluyen que la corrosión ocurrió,independiente de la marca.No hubo diferencias significativas entrelos grupos con o sin uso.
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Instrumentos Pro File antes y después de usar.
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Instrumentos Pow -R ,antes y después de usar.
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Assessment of Elemental Composition,Microstructure, and Hardness of Stainless SteelEndodontic Files and Reamers. Darabara M,bourithis L, Zinelis S, Papadimitriou G JOE Vol 30,N° 7,July 2004
Estudiaron la composición,la estructura metálica y ladureza de limas k, escareadores y limas H de varias marcas comerciales. Encontraron, en los mismos,diferencias en la composición,en la microestructura ,dureza y en los residuos según lafabicación....por torsión , por torneado y por pulido.
Atribuyen las grandes variaciones a los procesostermomecánicos.