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1.
Rev. Círc. Argent. Odontol ; 71(219): 12-15, dic.2014. ilus
Article in Spanish | LILACS | ID: lil-758500

ABSTRACT

El objetivo de toda preparación endodóntica es eliminar la mayor cantidad de gérmenes, detritus, restos orgánicos y material descompuesto del canal radicular. En este trabajo se presentan casos clínicos con controles a distancia que van de 9 a 33 años, de conductos tratados al mayor ensanche posible, siempre y cuando la estructura radicular lo permita, intentando no perforar, no descentralizar, no hacer escalones, no deformar, y obturando por ténica de condensación lateral a conos múltiples, con cemento sellador a base de óxido de cinc eugenol y conos de gutapercha. Todos fueron éxitos clínicos y radiográficos...


Subject(s)
Humans , Male , Female , Tooth Apex/physiology , Wound Healing/physiology , Periapical Diseases/therapy , Zinc Oxide-Eugenol Cement/therapeutic use , Follow-Up Studies , Gutta-Percha , Root Canal Preparation , Root Canal Therapy , Treatment Outcome
3.
Article in English | IMSEAR | ID: sea-140166

ABSTRACT

Objective: The aim of this in-vitro study was to compare dentinal adaptation of conventional obturating material and GuttaFlow in young permanent teeth of child patients. Materials and Methods: Ten young permanent anterior teeth with closed foramen were selected for the study. Root canal preparations were carried out using a step back technique. The canal was alternately irrigated with 5.25% sodium hypochlorite solution and 17% EDTA and normal saline. After root canal preparation specimens were randomly divided into two groups (n=5). GROUP "A": Obturated with zinc-oxide eugenol sealer and gutta-percha cone using cold lateral obturation technique. GROUP "B": Obturated with GuttaFlow as per the manufacturer's instruction. The teeth were split into two halves. Five randomly chosen longitudinal split teeth samples each from Group "A" and Group "B" was observed under scanning electron microscope to access the interface between obturating material and dentin at the level of 2 mm from the apex. Results: On statistical analysis the dentinal adaptation (μm) of Group A was observed with a mean of 0.52 and standard deviation 0.15, while the value of mean and standard deviation were noted 0.12 and 0.02 for Group B. The "t" value on comparison of Group A and Group B is 5.79 with "P " value of <0.001, which is highly significant. Conclusion: From result of the study it can be concluded Group B samples showed significantly superior seal when compared with Group A. Complete seal was not observed in any of Group A samples.


Subject(s)
Child , Dental Bonding , Dental Marginal Adaptation , Dental Pulp Cavity/ultrastructure , Dentin/ultrastructure , Dimethylpolysiloxanes/chemistry , Drug Combinations , Edetic Acid/therapeutic use , Gutta-Percha/chemistry , Gutta-Percha/therapeutic use , Humans , Materials Testing , Microscopy, Electron, Scanning , Root Canal Filling Materials/chemistry , Root Canal Irrigants/therapeutic use , Root Canal Preparation/methods , Sodium Hypochlorite/therapeutic use , Surface Properties , Tooth Apex/ultrastructure , Zinc Oxide-Eugenol Cement/therapeutic use
4.
Article in English | IMSEAR | ID: sea-139961

ABSTRACT

Aim: Evaluation of microleakage in endodontically treated teeth that have been coronally sealed with eugenol and noneugenol containing zinc oxide cement, with and without the use of cavity varnish. Materials and Methods: The crowns of single rooted teeth were removed at the cementoenamel junction (CEJ) and the root canals were prepared and obturated with gutta-percha points and zinc oxide eugenol (ZOE) sealer using lateral condensation technique. The samples were randomly divided into four groups-group 1, coronal seal was obtained with ZOE cement; in group 2, three coats of cavity varnish followed with coronal seal of ZOE cement; in group 3, Litark a (noneugenol cement) was placed in the prepared cavity as in group 1; and in group 4, cavity varnish and Litark were placed instead of ZOE as in group 2. The specimens were immersed in 2% methylene blue dye and examined under traveling microscope for evidence of dye penetration of the material. Statistical Analysis: In this study, Kruskal-Wallis test, Mann-Whitney U, and Wilcoxon W tests were used. Results: Kruskal-Wallis test with P=0.000 indicated that a significant difference exists between the four groups. Mann-Whitney U test and Wilcoxon W test showed a significant difference at 0.05 levels as follows: group 1 with group 3 and 4, group 2 with group 3 and 4, and group 3 with group 4. There was no significant difference at 0.05 levels between group 1 and group 2. Conclusion: Group 4 showed significant less amount of dye penetration as compared with other groups.


Subject(s)
Dental Cavity Lining , Dental Cements/therapeutic use , Dental Leakage/prevention & control , Dental Restoration, Permanent/methods , Gutta-Percha/therapeutic use , Humans , Root Canal Filling Materials/therapeutic use , Root Canal Obturation/methods , Statistics, Nonparametric , Zinc Oxide-Eugenol Cement/therapeutic use
5.
Braz. dent. j ; 21(1): 38-45, Jan. 2010. tab, ilus
Article in English | LILACS | ID: lil-552359

ABSTRACT

This study aimed to assess the response of apical and periapical tissues of dogs' teeth after root canal filling with different materials. Forty roots from dogs' premolars were prepared biomechanically and assigned to 4 groups filled with: Group I: commercial calcium hydroxide and polyethylene glycol-based paste (Calen®) thickened with zinc oxide; Group II: paste composed of iodoform, Rifocort® and camphorated paramonochlorophenol; Group III: zinc oxide-eugenol cement; Group IV: sterile saline. After 30 days, the samples were subjected to histological processing. The histopathological findings revealed that in Groups I and IV the apical and periapical regions exhibited normal appearance, with large number of fibers and cells and no resorption of mineralized tissues. In Group II, mild inflammatory infiltrate and mild edema were observed, with discrete fibrogenesis and bone resorption. Group III showed altered periapical region and thickened periodontal ligament with presence of inflammatory cells and edema. It may be concluded that the Calen paste thickened with zinc oxide yielded the best tissue response, being the most indicated material for root canal filling of primary teeth with pulp vitality.


O objetivo deste estudo foi avaliar a resposta dos tecidos apicais e periapicais de dentes de cães, após obturação dos canais radiculares com diferentes materiais indicados para dentes decíduos. Foram utilizados pré-molares de cães, totalizando 40 raízes que, após pulpectomia e preparo biomecânico, foram divididas em 4 grupos, nos quais os canais radiculares foram obturados com os seguintes materiais: Grupo I - pasta comercial composta de hidróxido de cálcio e polietileno glicol 400 (Calen®) espessada com óxido de zinco; Grupo II - pasta composta de iodofórmio, Rifocort® e paramonoclorofenol canforado; Grupo III - cimento de óxido de zinco e eugenol; e Grupo IV - solução salina. Decorridos 30 dias, as peças foram submetidas ao processamento histológico. De acordo com os resultados da análise histopatológica observou-se que nos Grupos I e IV as regiões apical e periapical apresentaram aspecto de normalidade, com grande número de fibras e células e ausência de reabsorção dos tecidos mineralizados. No Grupo II observou-se infiltrado inflamatório e edema leves, com discreta fibrogênese e reabsorção óssea. O Grupo III apresentou alteração na região periapical e ligamento periodontal ampliado, com presença de células inflamatórias e edema. Os resultados obtidos permitiram concluir que a pasta Calen espessada com óxido de zinco apresentou a melhor resposta tecidual, sendo a mais indicada para a obturação de canais radiculares de dentes decíduos com vitalidade pulpar.


Subject(s)
Animals , Dogs , Dental Pulp Cavity/drug effects , Root Canal Filling Materials/therapeutic use , Tooth, Deciduous/drug effects , Bicuspid/surgery , Bone Resorption/etiology , Calcium Hydroxide/therapeutic use , Camphor/therapeutic use , Chlorophenols/therapeutic use , Connective Tissue/drug effects , Drug Combinations , Dental Cementum/drug effects , Dental Disinfectants/therapeutic use , Dental Pulp Cavity/pathology , Dentin/drug effects , Edema/etiology , Hydrocarbons, Iodinated/therapeutic use , Leukocytes, Mononuclear/pathology , Materials Testing , Periapical Tissue/drug effects , Periapical Tissue/pathology , Periodontal Ligament/drug effects , Periodontal Ligament/pathology , Polyethylene Glycols/therapeutic use , Prednisolone/analogs & derivatives , Prednisolone/therapeutic use , Rifamycins/therapeutic use , Root Canal Preparation/methods , Root Resorption/etiology , Time Factors , Tooth Apex/drug effects , Tooth Apex/pathology , Tooth, Deciduous/pathology , Zinc Oxide-Eugenol Cement/therapeutic use , Zinc Oxide/therapeutic use
6.
Article in English | IMSEAR | ID: sea-51716

ABSTRACT

BACKGROUND: Vital pulpotomy is a single-stage procedure defined as the surgical amputation of the coronal portion of exposed vital pulp, usually as a means of preserving the vitality and function of the remaining radicular portion. OBJECTIVES : The aim of this study was to compare the clinical and radiographic success rates for electrosurgical vs formocresol pulpotomy in human primary molar teeth. SETTINGS AND DESIGN: This was a prospective, randomized clinical trial. MATERIALS AND METHODS: In this randomized clinical trial, pulpotomies were performed on 70 primary molars in children aged 5-10 years. The teeth were treated using either a conventional formocresol (35 teeth) or electrosurgical technique (35 teeth). Following the pulpotomy procedure, the teeth were evaluated for clinical and radiographic success for three, six and nine months. The teeth were evaluated for the presence of pain, abscess, fistula, mobility, internal and external resorption, and radiolucency. STATISTICAL ANALYSIS: The data were assessed with Fishers' Exact test. RESULTS: After nine months of follow-up, the clinical and radiographic success rates were 96 and 84% respectively in the electrosurgical group and 100 and 96.8% respectively in the formocresol group. There was no statistically significant difference between the success rates in the two groups ( P > 0.05). CONCLUSIONS: Our results showed the failure rates for electrosurgical pulpotomy to be equal to those for formocresol pulpotomy. Although electrosurgical pulpotomy is a nonpharmacological technique giving favorable results, it is still a preservative technique. Further studies using larger samples and longer evaluation periods are recommended.


Subject(s)
Child , Child, Preschool , Dental Amalgam , Dental Fistula/etiology , Dental Pulp Capping/methods , Dental Pulp Exposure/therapy , Dental Restoration, Permanent , Electrosurgery/methods , Follow-Up Studies , Formocresols/therapeutic use , Humans , Molar/drug effects , Periapical Abscess/etiology , Prospective Studies , Pulpotomy/methods , Tooth Mobility/etiology , Tooth Resorption/etiology , Tooth, Deciduous/drug effects , Toothache/etiology , Treatment Outcome , Zinc Oxide-Eugenol Cement/therapeutic use
7.
J. appl. oral sci ; 16(1): 24-29, Jan.-Feb. 2008. ilus, tab
Article in English | LILACS | ID: lil-472685

ABSTRACT

This study compared, by scanning electron microscopy (SEM), the efficacy of three solvents on the removal of filling materials from dentinal tubules during endodontic retreatment. Forty human maxillary canines with straight canals were prepared according to a crown-down technique and enlarged to a#30 apical file size, before obturation with gutta-percha and a zinc-oxide-eugenol based sealer. The samples were stored for 3 months before being randomly assigned to four groups: chloroform (n=10), orange oil (n=10), eucalyptol (n=10) and control (n=10). Solvents were applied to a reservoir created on the coronal root third using Gates Glidden drills. The total time for retreatment using the solvents was 5 minutes per tooth. Following retreatment the roots were split longitudinally for SEM evaluation. SEM images were digitized, analyzed using Image ProPlus 4.5 software, and the number of dentinal tubules free of filling material from the middle and apical thirds was recorded. No significant difference was found among the solvent groups regarding the number of dentinal tubules free of root filling remnants in the middle and apical root thirds (p>0.05). However, the control group had fewer dentinal tubules free of filling material (p<0.05). Under the tested conditions, it may be concluded that there was no significant difference among the solvents used to obtain dentinal tubules free of filling material remnants.


Subject(s)
Humans , Dental Pulp Cavity/drug effects , Root Canal Irrigants/therapeutic use , Root Canal Preparation/methods , Solvents/therapeutic use , Chloroform/therapeutic use , Cuspid/ultrastructure , Cyclohexanols/therapeutic use , Dental Pulp Cavity/ultrastructure , Dentin/drug effects , Dentin/ultrastructure , Eucalyptus , Gutta-Percha/therapeutic use , Image Processing, Computer-Assisted , Materials Testing , Microscopy, Electron, Scanning , Monoterpenes/therapeutic use , Plant Oils/therapeutic use , Retreatment , Root Canal Obturation , Root Canal Filling Materials/therapeutic use , Time Factors , Tooth Apex/drug effects , Tooth Apex/ultrastructure , Zinc Oxide-Eugenol Cement/therapeutic use
8.
Rev. odonto ciênc ; 22(56): 106-111, abr.-jun. 2007. ilus
Article in Portuguese | LILACS, BBO | ID: lil-472493

ABSTRACT

O presente estudo teve como objetivo avaliar, in vitro, a atividade antimicrobiana dos cimentos endodônticos AH Plus (A), Endofill (E) e Sealer 26 (S), imediatamente após a manipulação, em contatos com culturas isoladas de E. faecalis (EF), P. aeruginosa (PA), S. aureus (SA) e C. albicans (CA). Para tanto, foram confeccionados 9 corpos de prova de cada um dos materiais a partir de discos de papel filtro com 5 mm de diâmetro. Oito destes, 2 para cada microrganismo, foram colocados sobre placas de Petri, contendo meio de cultura Brain Hart Infusion-Agar (BHI-A) inoculado. O último foi colocado sobre uma placa com meio de cultura estéril (controle de esterilidade). Uma placa com BHI-A não inoculado serviu de controle negativo. As placas foram levadas a estufa bacteriológica e 48 horas após realizou-se a medida dos halos de inibição de crescimento microbiano com auxilio de paquímetro digital. Para o grupo do A, E e S, respectivamente, a média dos halos, em milímetros, foi de: 0,70, 3,13 e 1,79 para EF; 1,08, 3,40 e 3,01 para PA; 0,72, 3,16 e 4,03 para SA; 1,32, 2,59 e 1,40 para CA. O controle negativo e o controle de esterilidade dos materiais evidenciaram ausência de crescimento microbiano. Conclui-se que todos os cimentos testados apresentaram atividade antimicrobiana em contato com as culturas estudadas, sendo que para EF, PA e CA a ordem crescente do diâmetro do halo de inibição foi: A, S e E. Para SA a ordem crescente foi: A, E e S.


Subject(s)
In Vitro Techniques , Root Canal Filling Materials , Products with Antimicrobial Action , Zinc Oxide-Eugenol Cement/therapeutic use , Resin Cements/therapeutic use
9.
Braz. dent. j ; 16(2): 149-155, maio-ago. 2005. ilus, tab
Article in English | LILACS | ID: lil-413416

ABSTRACT

O presente estudo in vivo comparou os efeitos do agregado de trióxido mineral (MTA), IRM, Super EBA e OZE na consistência de massa de vidraceiro, usados como material para obturação retrógrada, no processo de reparo dos tecidos periapicais de dentes despulpados de cães submetidos à técnica de retrobturação convencional. Vinte e quatro pré-molares obtidos de três cães foram usados. Na primeira intervenção, os animais foram anestesiados, e a abertura coronária e a pulpectomia foram realizadas. Os canais radiculares foram mantidos abertos ao meio oral por 180 dias para induzir a formação de lesão periapical. Após a remoção cirúrgica das lesões com curetas, 2 mm apicais da raiz foram seccionados perpendicularmente ao longo eixo do dente e uma cavidade apical foi preparada com broca esférica em baixa-rotação. As cavidades ósseas foram irrigadas e secas, e as cavidades apicais obturadas com MTA, IRM, Super EBA e OZE na consistência de massa de vidraceiro. As cavidades ósseas foram passivamente preenchidas com sangue e os retalhos suturados. As aberturas coronárias foram limpas e seladas duplamente com OZE e amálgama. Após 180 dias, os animais foram sacrificados por super-dosagem de anestésico, a maxila e a mandíbula foram removidas e as peças processadas para análise histomorfológica. Os dados foram avaliados cegamente com base nos vários eventos histomorfológicos e os escores obtidos foram analisados estatisticamente usando o teste Kruskal Wallis. Nenhuma diferença estatisticamente significante foi observada entre MTA, Super EBA e IRM (p>0,005). Entretanto, o OZE teve influência negativa significantemente maior no reparo apical (p<0,005). Estes resultados indicam que MTA, Super EBA e IRM tiveram efeitos histopatológicos similares entre eles e melhor performance que o OZE utilizado na consistência de massa de vidraceiro. Além disso, somente o MTA estimulou a deposição de tecido duro em contato direto com o material retrobturador, mesmo quando inserido sob condições críticas.


Subject(s)
Animals , Dogs , Aluminum Compounds/therapeutic use , Calcium Compounds/therapeutic use , Oxides/therapeutic use , Retrograde Obturation , Root Canal Filling Materials/therapeutic use , Silicates/therapeutic use , Tooth, Nonvital/therapy , Apicoectomy , Curettage , Drug Combinations , Dental Cementum/pathology , Dentin-Bonding Agents/therapeutic use , Dentin/pathology , Methylmethacrylates/therapeutic use , Pulpectomy , Periapical Diseases/pathology , Periapical Diseases/surgery , Periapical Diseases/therapy , Periapical Tissue/pathology , Root Canal Preparation , Single-Blind Method , Time Factors , Wound Healing , Zinc Oxide-Eugenol Cement/therapeutic use
10.
RGO (Porto Alegre) ; 48(1): 37-41, jan.-mar. 2000. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-296855

ABSTRACT

Neste estudo foi comparado a eficácia seladora de dois adesivos dentinários (One Step-Bisco e Prime & Bond-Dentisply) com a resina composta Z-100 (3M), e do cimento de óxido de zinco e eugenol em cavidades de dentes anteriores superiores e de pré-molares inferiores pulpotomizados. Os resultados demonstraram que o adesivo dentinário One Step e Z-100 apresenta boa capacidade vedadora para cavidades de dentes pulpotomizados, näo sendo observado o mesmo para os outros dois materiais testados


Subject(s)
Dentin-Bonding Agents/therapeutic use , Zinc Oxide-Eugenol Cement/therapeutic use , Composite Resins/therapeutic use , Dental Leakage , Endodontics , In Vitro Techniques , Pulpotomy
11.
Acta odontol. venez ; 37(3): 98-105, 1999. ilus
Article in Spanish | LILACS | ID: lil-288487

ABSTRACT

La protección dentino-pulpar ha cambiado con el tiempo y esto se debe a los avances en la adhesión de los materiales y su interacción con el órgano dentinopulpar el odontólogo será capaz de decidir cuándo y cuál protector debe seleccionar


Subject(s)
Dental Cavity Lining , Dental Pulp Capping , Glass Ionomer Cements/therapeutic use , Composite Resins/chemistry , Dentin Permeability/drug effects , Dentin-Bonding Agents/therapeutic use , Dentin/anatomy & histology , Acid Etching, Dental/methods , Calcium Hydroxide/therapeutic use , Dental Cavity Preparation/methods , Zinc Oxide-Eugenol Cement/therapeutic use , Zinc Phosphate Cement/chemistry
13.
ROBRAC ; 6(21): 24-7, mar. 1997.
Article in Portuguese | LILACS, BBO | ID: lil-235777

ABSTRACT

A capacidade de três seladores temporários (Cavit, IRM e óxido de zinco-eugenol) de prevenir a infiltraçäo bacteriana foi avaliada. Para isto, utilizou-se uma cultura de Streptococcus Sobrinus, uma espécie bacteriana comumente isolada da cavidade oral. Os resultados indicaram que todos os três materiais foram ineficazes em impedir a penetraçäo bacteriana. Após 8 dias de avaliaçäo, houve infiltraçäo bacteriana em 27,3 por cento dos espécimes selados com Cavit, 45,5 por cento IRM e 45,5 por cento com óxido de zinco-eugenol (OZE). Após 16 dias, ocorreu infiltraçäo bacteriana em 54,5 por cento, 63,6 por cento e 72,7 por cento das amostras seladas com Cavit, IRM e OZE, respectivamente. Näo houve diferença estatisticamente significante entre os grupos


Subject(s)
Dental Pulp Cavity/microbiology , Zinc Oxide-Eugenol Cement/therapeutic use , Dental Leakage/prevention & control , Root Canal Filling Materials/therapeutic use , Streptococcus sobrinus/isolation & purification
15.
J Indian Soc Pedod Prev Dent ; 1996 Jun; 14(2): 39-44
Article in English | IMSEAR | ID: sea-115022

ABSTRACT

The present study, performed in-vivo, included 30 infected primary teeth in 26 children in the age group of 3-8 years. The purpose of this study was to compare the efficacy of two obturating materials, zinc oxide-eugenol and Maisto's paste, in infected primary teeth. 30 teeth were divided into two groups of 15 teeth. Teeth in Group I were obturated using zinc oxide-eugenol and those in Group II were obturated using Maisto's paste. On clinical evaluation, teeth obturated with Maisto's paste showed 100% success. Five teeth that were overfilled with Maisto's paste showed complete resorption of excess material within 3 months while the two teeth overfilled with zinc oxide-eugenol showed incomplete resorption of the excess material even after 9 months. Zinc oxide-eugenol treated cases showed only 26.7% bone regeneration while in case of Maisto's paste, it was 93%. Complete healing of the inter-radicular pathology was seen with Maisto's paste. However, the pathology was present in 40% of the zinc oxide-eugenol treated teeth even after 9 months. Maisto's paste was thus seen to be superior to zinc oxide-eugenol both in clinical as well as radiological evaluation, done over a period of 9 months in relation to bone regeneration, healing of inter-radicular pathology and resorption of excess material.


Subject(s)
Abscess/diagnostic imaging , Camphor/therapeutic use , Child , Child, Preschool , Chlorophenols/therapeutic use , Tooth, Deciduous , Drug Combinations , Female , Follow-Up Studies , Humans , Hydrocarbons, Iodinated/therapeutic use , Male , Root Canal Filling Materials/therapeutic use , Root Canal Obturation/methods , Thymol/therapeutic use , Tooth Diseases/diagnostic imaging , Zinc Oxide/therapeutic use , Zinc Oxide-Eugenol Cement/therapeutic use
16.
Acta odontol. latinoam ; 9(1): 13-9, 1996. ilus, tab
Article in English | LILACS | ID: lil-193857

ABSTRACT

Una de las características más importantes de los cementos de ionómero vítreo es la posibilidad de liberación de fluoruros. Este estudio fue llevado a cabo para tratar de establecer las relaciones entre esta cualidad y el efecto que ejercía sobre el desarrollo de los microorganismos que se encuentran en las lesiones cariosas. Cajas de petri que contenían agar BHI se inocularon con cepas de Actinomyces naeslundii, Actinomyces israelii y Actinomyces odontolyticus. Se realizaron cavidades en el agar que se llenaron con mezclas de diversos ionómeros vítreos. Algunos de ellos eran de resina polimerizable. Se utilizó cemento de fosfato de zinc y cemento de óxido de zinc eugenol como testigos. Después de 7 días de incubación a 37 grados C en condiciones de anaerobiosis, se midieron los halos de inhibición alrededor de las muestras, en una forma silimar a la que se hace para antibiogramas. El análisis estadístico de los resultados demostró que no había diferencias significativas entre las cepas de Actinomyces, pero era significativa entre los cementos. Aunque no se pueden extraer conclusiones definitivas, es válido tener en consideración el efecto de los cementos de ionómero vítreo sobre los Actinomyces. Se continuarán los estudios para clarificar la significación clínica de este hallazgo


Subject(s)
Glass Ionomer Cements/therapeutic use , Dental Caries/prevention & control , Fluorides , Actinomyces/growth & development , Actinomyces/isolation & purification , Composite Resins/therapeutic use , Dental Caries/microbiology , Zinc Oxide-Eugenol Cement/therapeutic use , Zinc Phosphate Cement/therapeutic use
17.
ROBRAC ; 5(16): 15-7, dez. 1995. tab
Article in Portuguese | LILACS, BBO | ID: lil-168294

ABSTRACT

Estudou-se, utilizando-se a Especificaçäo N§ 57 da American Dental Association, o tempo de endurecimento dos seguintes cimentos endodônticos que contém hidróxido de cálcio em suas fórmulas: Apexit, Sealapex, CRCS e Sealer 26. O cimento CRCS evidenciou um tempo de endurecimento de 23 minutos; o Apexit, 1 hora e 30 minutos; o Sealer 16,41 horas e 22 minutos e o Sealapex, 45 horas e 34 minutos


Subject(s)
Humans , Male , Female , Zinc Oxide-Eugenol Cement/therapeutic use , Dental Cements/chemistry , Calcium Hydroxide/analysis , Time Factors
18.
Odontol. chil ; 43(1): 15-7, abr. 1995.
Article in Spanish | LILACS | ID: lil-193869

ABSTRACT

Se demostró la actividad antibacteriana "in vitro" de un medio de cementación temporal experimental, en base a óxido de zinc eugenol e hidróxido de calcio, frente a una cepa de S. mutans y frente a una de L. acidophillus, ambos microorganismos indicados como algunos de los principales en la producción de la caries dentaria. El medio de cementación experimental presentó inhibición del desarrollo bacteriano "in vitro", tanto frente al Streptococcus mutans como frente al Lactobacillus acidophillus


Subject(s)
Bacterial Adhesion/physiology , Cementation/methods , Growth Inhibitors/physiology , Calcium Hydroxide/therapeutic use , In Vitro Techniques , Zinc Oxide-Eugenol Cement/therapeutic use , Dental Restoration, Temporary , Dental Restoration, Temporary/instrumentation , Lactobacillus acidophilus/drug effects , Streptococcus mutans/drug effects
19.
ROBRAC ; 5(14): 4-6, mar. 1995. tab
Article in Portuguese | LILACS, BBO | ID: lil-160003

ABSTRACT

O autores estudaram a influência de cada componente químico do cimento proposto por Grossman sobre a relaçäo pó/líquido e o tempo de espatulaçäo obtidos para se atingir a consistência clínica ideal. Para se avaliar qual a influência que cada componente do pó do cimento tem sobre a relaçäo pó/líquido, aviaram-se sete fórmulas diferentes, acrescentando-se ao óxido de zinco puro os demais componentes da fórmula. Observou-se que o tempo de espatulaçäo necessário para que o cimento atinja a consistência desejada está diretamente relacionado à quantidade de pó utilizada, e que o tempo de espatulaçäo está inversamente relacionado à quantidade de óxido de zinco presente na fórmula do cimento


Subject(s)
Humans , Male , Female , Dental Pulp Cavity , Zinc Oxide-Eugenol Cement/therapeutic use , Root Canal Obturation/methods
20.
Rev. bras. odontol ; 52(1): 22-6, jan.-fev. 1995. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-159972

ABSTRACT

Sessenta dentes uni-radiculares obturados com guta-percha e cimento à base de óxido de zinco eugenol, cujos limites de obturaçäo estavam situados de 1 a 3 mm aquém do ápice radiográfico foram, inicialmente, esvaziados com lima Hedstroen e solvente. A seguir foram re-instrumentados pela técnica manual convencional e ultra-sônica a 1 mm aquém do forame apical. Metade das amostras, durante a instrumentaçäo foi esvaziada além do forame apical. Os resultados mostraram que o esvaziamento de todo o segmento apical favoreceu a remoçäo de material obturador dos canais radiculares


Subject(s)
Humans , Male , Female , Zinc Oxide-Eugenol Cement/therapeutic use , Gutta-Percha/therapeutic use , Root Canal Obturation/instrumentation , Root Canal Filling Materials/analysis
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