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1.
Article Dans Anglais | IMSEAR | ID: sea-140196

Résumé

Aim: Root canal irrigation plays an important role in the debridement and disinfection of the root canal system. "The purpose of this study was to evaluate the efficacy of Carisolv TM , 1% sodium hypochlorite (NaOCl) gel, and 1% NaOCl solution as root canal irrigants in deciduous anterior teeth." Materials and Methods: Thirty-six extracted deciduous anterior teeth were used. Root canals were flooded with NaOCl solution in Group A, NaOCl gel in Group B and Carisolv TM in Group C and incubated for 30 min. Scanning electron microscope photomicrographs of canal wall debris in the apical, middle and coronal thirds were scored. Results: The results showed that regardless of irrigation regime, canals were consistently cleaner in the coronal and middle thirds than in the apical thirds. NaOCl solution, NaOCl gel, and Carisolv TM had comparable activity at coronal third and middle third of root canals. At the apical third, NaOCl solution cleaned canals better than NaOCl gel and Carisolv TM . Carisolv TM cleaned debris better than NaOCl gel at the apical third. Conclusion: Carisolv TM can be used as an adjunct to root canal preparation.


Sujets)
Canine/effets des médicaments et des substances chimiques , Canine/ultrastructure , Cavité pulpaire de la dent/effets des médicaments et des substances chimiques , Cavité pulpaire de la dent/ultrastructure , Dentine/effets des médicaments et des substances chimiques , Dentine/ultrastructure , Gels , Acide glutamique/usage thérapeutique , Humains , Incisive/effets des médicaments et des substances chimiques , Incisive/ultrastructure , Leucine/usage thérapeutique , Lysine/usage thérapeutique , Test de matériaux , Microscopie électronique à balayage , Liquides d'irrigation endocanalaire/administration et posologie , Liquides d'irrigation endocanalaire/usage thérapeutique , Boue dentinaire , Hypochlorite de sodium/administration et posologie , Hypochlorite de sodium/usage thérapeutique , Solutions , Facteurs temps , Apex de la racine de la dent/effets des médicaments et des substances chimiques , Apex de la racine de la dent/ultrastructure , Dent de lait/effets des médicaments et des substances chimiques , Dent de lait/ultrastructure
2.
Braz. dent. j ; 23(4): 357-361, 2012. ilus
Article Dans Anglais | LILACS | ID: lil-658010

Résumé

Complete debridement with smear layer removal are essential measures for achieving a successful outcome of root canal treatment. The aim of this study was to evaluate the effects of chitosan at different concentrations on the removal of the smear layer and on dentin structure after 3 and 5 min of application. Twelve recently extracted maxillary canine teeth were instrumented using the crown-down technique and irrigated with 1% sodium hypochlorite. The specimens were distributed according to the time and concentration of the final irrigating solution: G1: 0.1% chitosan for 3 min; G2: 0.2% chitosan for 3 min; G3: 0.37% chitosan for 3 min; G4: 0.1% chitosan for 5 min; G5: 0.2% chitosan for 5 min; G6: 0.37% chitosan for 5 min. All samples were prepared for SEM analysis. G1 exhibited removal of the smear layer, but not the smear plugs. G2 showed visible and open tubules with slight erosion of the peritubular dentin. Cleaning in G3 was similar to that in G2, however, the erosive effect was greater. There was expansion of the diameter of the tubules in G4; and in G5 and G6, there was severe erosion with deterioration of dentin surface. In conclusion, 0.2% chitosan for 3 min appeared to be efficient for removing the smear layer, causing little erosion of dentin.


Completo debridamento dos canais radiculares com a remoção da smear layer são medidas essenciais no sucesso do tratamento endodôntico. O objetivo deste estudo foi avaliar os efeitos da quitosana, em diferentes concentrações, na remoção da smear layer e na estrutura da dentina, após 3 e 5 min de aplicação. Doze dentes caninos superiores, recém extraídos, foram instrumentados pela técnica crown-down e irrigados com hipoclorito de sódio 1%. Os espécimes foram distribuídos em seis grupos conforme o tempo e a concentração da solução irrigante final: G1: quitosana 0,1% por 3 min; G2: quitosana 0,2% por 3 min; G3: quitosana 0,37% por 3 min; G4: quitosana 0,1% por 5 min; G5: quitosana 0,2% por 5 min; G6: quitosana 0,37% por 5 min. Todas as amostras foram preparadas para avaliação em MEV. Os resultados mostraram que o G1 apresentou remoção da smear layer, mas não da smear plug. O G2 mostrou túbulos visíveis e abertos com ligeira erosão da dentina peritubular. A limpeza no G3 foi semelhante à do G2, no entanto, o efeito erosivo foi maior. No G4 houve ampliação do diâmetro dos túbulos e no G5 e G6, severa erosão com deterioração da superfície dentinária. Concluiu-se que a quitosana 0,2% por 3 min foi eficiente na remoção da smear layer, ocasionando pequena erosão.


Sujets)
Humains , Chélateurs/usage thérapeutique , Chitosane/usage thérapeutique , Dentine/effets des médicaments et des substances chimiques , Liquides d'irrigation endocanalaire/usage thérapeutique , Chélateurs/administration et posologie , Chitosane/administration et posologie , Canine/effets des médicaments et des substances chimiques , Canine/ultrastructure , Dentine/ultrastructure , Microscopie électronique à balayage , Liquides d'irrigation endocanalaire/administration et posologie , Préparation de canal radiculaire/instrumentation , Préparation de canal radiculaire/méthodes , Boue dentinaire , Hypochlorite de sodium/administration et posologie , Hypochlorite de sodium/usage thérapeutique , Facteurs temps , Irrigation thérapeutique/méthodes
3.
Rev. Asoc. Odontol. Argent ; 87(6): 471-4, nov.-dic. 1999. ilus
Article Dans Espagnol | LILACS | ID: lil-249178

Résumé

En la presente experiencia se evaluo el indice de permeabilidad presente a nivel del margen cervical en 100 piezas dentarias extraidas correspondientes al sector anterosuperior, de canino a canino. De las piezas dentarias analizadas, 95 correspondieron al grupo experimental y 5 al control. Los especimenes del grupo control fueron recubiertos totalmente con esmalte sintetico de uñas, en tanto que en los del grupo experimental, solo se recubrieron las zonas media y apical de la raiz dejando expuesto el margen cervical. Todos los dientes fueron sumergidos en azul de metileno al 2 por ciento durante 72 hs. Luego de lavados y cepillados, se seccionaron longitudinalmente con discos de carborundum. Las hemisecciones obtenidas fueron observadas con una lupa estereoscopica a x4 a fin de consignar el indice de permeabilidad cervical. Los resultados mostraron una media de 54,74 por ciento de dientes con permeabilidad, con un intervalo de confianza con limites de 44,2 por ciento y 65 por ciento.


Sujets)
Humains , Perméabilité de l'émail dentaire/effets des médicaments et des substances chimiques , Perméabilité de la dentine/effets des médicaments et des substances chimiques , Techniques in vitro , Racine dentaire , Perméabilité dentaire/effets des médicaments et des substances chimiques , Canine/effets des médicaments et des substances chimiques , Incisive/effets des médicaments et des substances chimiques
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