Avaliação da permeabilidade dentária de dentes submetidos à reintervenção endodôntica quando obturados com diferentes cimentos / Evaluation of the permeability of dental teeth underwent reintervention when filled with different endodontic cements
AUTOR(ES)
Rafael Paiva Lopes
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
08/09/2011
RESUMO
The purpose of this study was to evaluate ex vivo the permeability of root canal dentin walls after the removal of three different combinations of filling materials. To this end, 36 extracted human single-rooted premolars, with similar length and anatomy, had surgery access to the pulp chamber, root canal preparation was performed to F4 ProTaper instruments and filling with one of the following associations of filling materials: G1 - gutta-percha and Fill Canal cement (n = 10); G2 - gutta-percha and AH Plus cement (n = 10); G3 - Resilon cones and Epiphany cement (n = 10). Six specimens were prepared but its canals were not filled for positive control. After 24 hours at 37 ° C, the canals were desobturated, making use of NRT rotary instruments , # 40 K-type files and orange oil based solvent. After the removal of the filling material, specimens were sealed and tested for impregnation of dye in 1% methylene blue for 24 hours in the absence of vacuum. The teeth were then washed in running water for 24 hours, had their crowns amputated and the roots sectioned horizontally into 1 mm slices. For each root third , one section was selected and photographed, the images were stored on computer and the percentage of stained dentin in each section was calculated using a graphical analysis software. The results showed a statistically significant difference between experimental groups and control group (p <0.05). However, there was no statistical difference between experimental groups (p>0.05). Thus, it was concluded that the type of filling material does not influence dentin permeability after its removal.
ASSUNTO(S)
endodontia endodontic materiais obturadores do canal radicular reintervenção endodôntica reintervention endodontic root canal filling materials
Documentos Relacionados
- Avaliação da microinfiltração apical em dentes obturados com quatro diferentes cimentos endodônticos
- Infiltração bacteriana em canais radiculares obturados com diferentes cimentos endodônticos e duas técnicas obturadoras
- Infiltração microbiana em dentes obturados com diferentes cimentos endodônticos e preparados para pino
- Evaluation of periapical inflammation response from coronal leakage in dog´s teeth obturated using different resin-based sealers and different obturation techniques
- Histological evaluation of the inflammatory response to endodontic filling materials