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1.
Dent. press endod ; 11(2): 11-17, maio-ago.2021.
Article in Portuguese | LILACS | ID: biblio-1372773

ABSTRACT

A indicação das soluções anestésicas nos tratamentos endodônticos de rotina deve estar fundamentada nos conhecimentos dos possíveis efeitos que essas substâncias podem desencadear no paciente sistemicamente comprometido. Objetivo: O objetivo do presente estudo foi priorizar a indicação e discutir os possíveis efeitos secundários ou adversos passíveis de ocorrência com as substâncias que compõem as soluções anestésicas durante a rotina de tratamento dos canais radiculares (AU).


The indication of anesthetic solutions in routine endodontic treatments must be based on knowledge of the possible effects that these substances can trigger in systemically compromised patients. Aim: The aim of the present study was to prioritize the indication and discuss the possible secondary or adverse effects likely to occur with the use of substances of which anesthetic solutions are composed, during the routine treatment of root canals (AU).


Subject(s)
Humans , Root Canal Therapy , Anesthetics , Solutions/adverse effects
2.
Braz. oral res. (Online) ; 33: e057, 2019. tab, graf
Article in English | LILACS | ID: biblio-1011660

ABSTRACT

Abstract The aim of this study was to evaluate the effect of peracetic acid (PAA) as a single irrigant on the smear layer, on the intraradicular dentinal bond strength, and on the penetrability of an epoxy-based resin sealer into the dentinal tubules. A total of 120 roots were distributed into 4 groups according to the irrigant used in root canal preparation: 1% PAA (PAA); 2.5% NaOCl followed by final irrigation with 17% EDTA and 2.5% NaOCl (NaOCl-EDTA-NaOCl); 2.5% NaOCl (NaOCl); and saline solution (SS). The smear layer was evaluated using scanning electron microscopy. The bond strength of an epoxy-based resin sealer (AH Plus) to root dentin was evaluated by the push-out test and penetrability of the sealer into dentinal tubules was observed by confocal laser microscopy. The results were analyzed by the Kruskal-Wallis and the Dunn post-test (α = 0.05). The use of 1% PAA as single root canal irrigant provided smear layer removal and improved the penetrability and bond strength of AH Plus to root dentin in a manner similar to that of the NaOCl-EDTA-NaOCl group (p > 0.05). The NaOCl and SS groups had higher values of smear layer and lower values of sealer penetrability and dentin bond strength than the PAA and NaOCl-EDTA-NaOCl groups (p < 0.05). Thus, 1% PAA has the potential to be used as a single irrigant in root canals.


Subject(s)
Humans , Peracetic Acid/chemistry , Root Canal Filling Materials/chemistry , Root Canal Irrigants/chemistry , Smear Layer/chemistry , Dental Pulp Cavity/drug effects , Dentin/drug effects , Epoxy Resins/chemistry , Reference Values , Sodium Hypochlorite/chemistry , Materials Testing , Microscopy, Electron, Scanning , Reproducibility of Results , Dental Bonding/methods , Edetic Acid/chemistry , Microscopy, Confocal , Dental Pulp Cavity/chemistry , Dentin/chemistry
3.
Rev. odontol. UNESP (Online) ; 44(3): 169-174, May-Jun/2015. tab
Article in Portuguese | LILACS, BBO | ID: lil-749892

ABSTRACT

Objetivo: Avaliar o efeito da dentina sobre o pH e a atividade antimicrobiana de formulações com hidróxido de cálcio. Material e método: O pH e a atividade antimicrobiana das formulações (G1- polietilenoglicol, G2- glicerina e paramonoclorofenol canforado ou G3- clorexidina) foram analisados nas formulações puras (G1A, G2A e G3A) ou acrescidas de dentina em pó (G1B, G2B e G3B). Tubos de polietileno foram preenchidos com uma das formulações e imersos em água destilada. O pH foi analisado após 24 horas, 7, 14 e 21 dias. A atividade antimicrobiana foi avaliada sobre Enterococcus faecalis (ATCC 29212), através do teste de difusão em ágar. Os resultados foram submetidos aos testes de ANOVA e Tukey (p=0,05). Resultado: A dentina não exerceu efeito sobre o pH das formulações, exceto ocasionando a redução em G1, no período de 24 horas (p<0,05). Nas demais formulações, não houve interferência da dentina sobre o pH (p>0,05). Quando comparados entre os grupos, em 24 horas e 7 dias, G1A e G1B apresentaram menor pH (p<0,05). Em 14 dias, G2A, G2B, G3A e G3B demonstraram similar pH (p>0,05), assim como entre G3B e G1A (p>0,05). Em 21 dias, todas as formulações demonstram semelhante pH (p>0,05). Os resultados em ordem decrescente da atividade antimicrobiana foram G2A=G2B>G3A=G3B>G1A=G1B (p<0,05). Conclusão: A dentina não interferiu no pH e na atividade antimicrobiana das diferentes formulações com hidróxido de cálcio, exceto na associação com o polietilenoglicol, em que ocasionou a redução do pH apenas no período de 24 horas. A formulação com paramonoclorofenol canforado apresentou maior atividade antimicrobiana, seguida da clorexidina e do polietilenoglicol. .


Objective: To evaluate the dentin effect on pH and antimicrobial activity of the calcium hydroxide chemical formulations. Material and method: pH and antimicrobial activity of calcium hydroxide formulations were evaluated (G1-polyethyleneglycol, G2-glycerin and camphorated paramonochlorophenol and G3-chlorhexidine). The formulations were evaluated alone (G1A, G2A e G3A) or with dentin powder (G1B, G2B and G3B). Polyethylene tubes were filled with the formulation and immersed in distilled water. After 24 hours, 7, 14 and 21 days, pH was evaluated. The antimicrobial activity was evaluated against Enterococcus faecalis by agar diffusion test. All data were submitted to ANOVA and Tukey tests (p=0.05). Result: None effect was observed on pH and antimicrobial activity by dentin on different chemical formulations, except the reduction occurred in G1 at 24 hours (p <0.05). When compared between the groups at 24 hours and 7 days, G1A and G1B had a lower pH (p <0.05). At 14 days, G2A, G2B, G3A and G3B showed similar pH (p<0.05) and between G3B and G1A (p>0.05). At 21 days, all formulations were similar (p>0.05). Regarding antimicrobial activity G2B G2A => = G3A G3B> = G1A G1B (p<0.05). Conclusion: The dentin did not affect the pH and antimicrobial activity of different formulations containing calcium hydroxide, except in association with polyethylene glycol, which caused the reduction of pH, within 24 hours. The formulation with paramonochlorophenol camphor showed higher antimicrobial activity, followed by chlorhexidine and polyethylene glycol. .


Subject(s)
Calcium Hydroxide , Analysis of Variance , Enterococcus faecalis , Dentin , Hydrogen-Ion Concentration , Chlorhexidine , Endodontics
4.
J. appl. oral sci ; 22(3): 180-184, May-Jun/2014. graf
Article in English | LILACS, BBO | ID: lil-711712

ABSTRACT

Recently, various calcium silicate-based sealers have been introduced for use in root canal filling. The MTA Fillapex is one of these sealers, but some of its physicochemical properties are not in accordance with the ISO requirements. Objective: The aim of this study was to evaluate the flowability, pH level and calcium release of pure MTA Fillapex (MTAF) or containing 5% (MTAF5) or 10% (MTAF10) calcium hydroxide (CH), in weight, in comparison with AH Plus sealer. Material and Methods: The flowability test was performed according to the ISO 6876:2001 requirements. For the pH level and calcium ion release analyses, the sealers were placed individually (n=10) in plastic tubes and immersed in deionized water. After 24 hours, 7 and 14 days, the water in which each specimen had been immersed was evaluated to determine the pH level changes and calcium released. Flowability, pH level and calcium release data were analyzed statistically by the ANOVA test (α=5%). Results: In relation to flowability: MTAF>AH Plus>MTAF5>MTAF10. In relation to the pH level, for 24 h: MTAF5=MTAF10=MTAF>AH Plus; for 7 and 14 days: MTAF5=MTAF10>MTAF>AH Plus. For the calcium release, for all periods: MTAF>MTAF5=MTAF10>AH Plus. Conclusions: The addition of 5% CH to the MTA Fillapex (in weight) is an alternative to reduce the high flowability presented by the sealer, without interfering in its alkalization potential. .


Subject(s)
Aluminum Compounds/chemistry , Calcium Compounds/chemistry , Calcium Hydroxide/chemistry , Calcium/chemistry , Epoxy Resins/chemistry , Oxides/chemistry , Root Canal Filling Materials/chemistry , Silicates/chemistry , Analysis of Variance , Drug Combinations , Materials Testing , Reference Values , Time Factors , Viscosity , Water/chemistry
5.
J. appl. oral sci ; 22(2): 125-130, Mar-Apr/2014. tab, graf
Article in English | LILACS, BBO | ID: lil-704190

ABSTRACT

Due to the low radiopacity of Sealer 26, iodoform is frequently empirically added to this sealer. Thus, the interference of this procedure with the physicochemical properties of Sealer 26 must be evaluated. Objective: This study evaluated the influence of the addition of iodoform on setting time, flow, solubility, pH, and calcium release of an epoxy-based sealer. Material and Methods: The control group was pure Sealer 26, and the experimental groups were Sealer 26 added with 1.1 g, 0.55 g or 0.275 g of iodoform. Setting time evaluation was performed in accordance with the ASTM C266-03 speciflcation. The analysis of flow and solubility was in accordance with the ISO 6876-2001 speciflcation. For the evaluation of pH and calcium ion release, polyethylene tubes were filled with the materials and immersed in flasks with 10 ml of deionized water. After 24 h, 7, 14, 21, 28, and 45 days pH was measured. In 45 days, the calcium released was evaluated with an atomic absorption spectrophotometer. Results: The addition of iodoform increased setting time in comparison with pure sealer (P<0.05). As for flow, solubility, and calcium release, the mixtures presented results similar to pure sealer (p>0.05). In the 24 h period, the mixture with 1.1 g and 0.55 g of iodoform showed lower pH than pure sealer and than sealer added with 0.275 g of iodoform (P<0.05). Conclusions: The iodoform added to Sealer 26 interferes with its setting time and solubility properties. Further studies are needed to address the clinical signiflcance of this interference. .


Subject(s)
Bismuth/chemistry , Calcium Hydroxide/chemistry , Epoxy Resins/chemistry , Hydrocarbons, Iodinated/chemistry , Root Canal Filling Materials/chemistry , Analysis of Variance , Hydrogen-Ion Concentration , Materials Testing , Chemical Phenomena , Reference Values , Reproducibility of Results , Solubility , Time Factors
6.
Araraquara; s.n; 2014. 45 p. ilus, tab.
Thesis in Portuguese | LILACS, BBO | ID: biblio-867871

ABSTRACT

Avaliar os efeitos da incorporação do iodofórmio ou do hidróxido de cál-cio (HC) respectivamente no cimento Sealer 26 ou MTA Fillapex (MF). Na ava-liação com o Sealer 26, as proporções de 1.1g, 0,55g or 0.275g foram incorpo-radas ao cimento e o de tempo de presa, escoamento, solubilidade, pH e libe-ração de cálcio foram avaliados. Na análise do MF puro, acrescido de 5% (MF5) ou 10%(MF10) em massa de HC, o escoamento, pH e liberação de cál-cio foram comparados com AH Plus. A adição do iodofórmio ao Sealer26 au-mentou o tempo de presa do cimento (p<0,05), mas os demais resultados fo-ram similares (p>0,05). Em 24hs, a mistura com 1.1g: 0.55g de iodofórmio de-monstrou menor pH que o cimento puro (p<0,05). O MF teve maior escoamento que os demais cimentos (p<0,05). O MF10 apresentou menor escoamento que MF (P<0,05). O MF10 apresentou maior pH que o AH Plus (p<0,05).A liberação de cálcio foi similar ao MF e o MF10 (p>0,05). O MF5 demonstrou menor esco-amento que o MF e maior que MF10 (p<0,05), tendo maior valor de pH que o MF (p<0,05) e similar liberação de cácio ao MF10. A adição do iodofórmio inter-fere no tempo de presa e solubilidade do Sealer 26 e a adição de 5%HC no MF apresentou-se como alternativa para reduzir o escoamento, sem interferir no potencial de alcalinização do MF.


To evaluate the effects of incorporation of iodoform or calcium hydroxide (CH) respectively in cement Sealer 26 or MTA Fillapex (MF) . In review with the Sealer26, the proportions of 1.1g, 0.55g or 0.275g were incorporated into the cement and the setting time, flow, solubility, pH and calcium release were evaluated. The analysis of pure MTA Fillapex (MF) or containing 5% (MF5) or 10% (MF 10) calcium hydroxide (CH), in weight, in comparison with AH Plus sealer .The addition of iodoform to Sealer26 cement increased setting time(p < 0.05), but the other results were similar (p> 0.05). In 24 hours, the mixture with 1.1g : 0.55g iodoform showed lower pH than the pure cement ( p < 0.05 ) . The MF had greater flow than the other cements ( p < 0.05 ) . The MF10 showed lower flow that MF ( P < 0.05 ) . The MF10 showed pH greater than AH Plus (p< 0.05). Calcium realise was similar to MF and MF10 (p> 0.05). The MF5 showed less than the flow MF , and greater than MF10 (p <0.05 ), and higher pH value than the MF (p <0.05) and calcium release similar to MF10 . The addition of iodoform interferes with the setting time and solubility of Sealer 26 and the addition of 5% CH in the MF presented as an alternative to reduce the flow without interfering with potential alkalization


Subject(s)
Calcium , Dental Cements , Chemical Phenomena , Endodontics
7.
RSBO (Impr.) ; 10(3): 211-216, Jul.-Sep. 2013. ilus, tab
Article in English | LILACS | ID: lil-695938

ABSTRACT

Introduction: Endodontic sealer residues on dentinal surface have negative effects on adhesion of adhesives system and/or can cause discoloration of the dental crown. Objective: To evaluate the efficacy of 95% ethanol in removal of residues of epoxy-based (AH Plus), methacrylate-based (Epiphany SE) or calcium-based (Sealapex) sealers on dentinal surface. Material and methods: Thirty-two bovine incisor dental crown fragments (0.5 mm x 0.5 mm) were treated with 17% EDTA and 2.5% NaOCl. The specimens were divided into three experimental groups (n = 10): G1 (AH Plus), G2 (Epiphany SE) and G3 (Sealapex). In each group was applied a coating of one endodontic sealer type and were left undisturbed for 5 minutes. After this period, the specimens were cleaned with 95% ethanol. The control group was composed by two specimens that did not receive any sealer or cleaning treatment. The sealer residues persistence after cleaning with 95% ethanol was evaluated by scanning electron microscopy (x500) and a score system was applied. Data obtained were analyzed by Kruskal-Wallis and Dunn tests (α = 5%). Results: Moderate amount of endodontic sealer residues were observed in all groups, regardless of the endodontic sealer compositions. G1, G2 and G3 presented similar amount of sealer residues on dentinal surface after cleaning with 95% ethanol (p > 0.05). Conclusion: 95% ethanol was inefficiency to remove completely AH Plus, Epiphany SE and Sealapex residues of sealer-contaminated dentin.

8.
RGO (Porto Alegre) ; 39(5): 373-5, set.-out. 1991. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-854789

ABSTRACT

A velocidade de absorção, por cones de papel absorvente, em função dos irrigantes (I) tergentol, (II) soro fisiológico, (III) irrigocal, (IV) endocris e (V) solução de Milton foi avaliada através do método proposto por HOLLAND et alii. Observou-se escala crescente do tempo de absorção, dos grupos I e V, existindo diferença entre os grupos extremos (p<0,05)


Subject(s)
Humans , Male , Female , Root Canal Preparation
9.
Rev. bras. odontol ; 48(5): 32-5, set.-out. 1991. tab, ilus
Article in Portuguese | LILACS, BBO | ID: biblio-857410

ABSTRACT

Trinta caninos humanos extraídos, tiveram seus canais radiculares preenchidos com cimento de óxido de zinco e eugenol. Em seguida, foram realizadas a apicectomia e a preparação para obturação retrógrada. Utilizou-se como agentes irrigadores, o soro fisiológico, EDTA e ácido cítrico a 2 por cento, realizando-se em seguida a retro-obturação com o cimento de óxido de zinco e eugenol. Após a imersão em solução de azul-de-metileno a 2 por cento por sete dias, a infiltração marginal foi analisada, denotando-se menor magnitude para o soro fisiológico, com diferença significante em relação ao ácido cítrico a 2 por cento (p>0,05)


Subject(s)
Dental Leakage , Retrograde Obturation , Root Canal Irrigants
10.
Rev. paul. odontol ; 13(5): 18-27, set.-out. 1991. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-858761

ABSTRACT

Comparou-se as técnicas de Condensação Lateral Ativa de Bramante e Híbridas de Tagger et al. e de Nguyen, sob dois aspectos administrativos: produtividade (dispêndio de tempo operatório) e custo operacional (consumo de cones de guta-percha). Os resultados demonstraram que a técnica de Tagger et al. foi a que requereu menos consumo nos dois aspectos estudados


Subject(s)
Humans , Dental Leakage , Efficiency , Gutta-Percha/standards , Root Canal Obturation/methods
11.
RGO (Porto Alegre) ; 39(2): 147-50, mar.-abr. 1991. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-854746

ABSTRACT

O objetivo deste trabalho foi avaliar clínica e radiograficamente pulpotomias realizadas em molares decíduos bem como a relação desse tratamento com defeitos estruturais do esmalte de seus dentes sucessores. A amostra consistiu de 61 crianças que nas idades de 3 a 8 anos tiveram 93 molares decíduos tratados com a técnica convencional de pulpotomia, usando formocresol diluído 1/5. O período de observação variou de 24 a 54 meses. Em 32 molares decíduos com restauração satisfatória houve sucesso clínico de 100 por cento e radiográfico de 85,72 por cento nos 35 dentes examinados. Dos 52 pré-molares sucessores 17,31 por cento apresentaram leve alteração de esmalte


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Formocresols/administration & dosage , Pulpotomy , Tooth, Deciduous
12.
Rev. bras. odontol ; 48(1): 21-3, jan.-fev. 1991. tab
Article in Portuguese | LILACS, BBO | ID: biblio-857365

ABSTRACT

A avaliação clínica de restaurações conservativas de classe I oclusal com ionômero de vidro mostrou ser este, um procedimento clínico aceitável dada a alta porcentagem de sucesso encontrada (70//). O estudo permitiu observar que o cimento ionomérico é um material crítico e cuidados especiais devem ser tomados na sua manipulação e técnica restauradora para que um melhor desempenho clínico seja conseguido


Subject(s)
Humans , Male , Female , Adolescent , Adult , Dental Restoration, Temporary , Glass Ionomer Cements
13.
Rev. bras. odontol ; 46(5): 2-8, set.-out. 1989. tab
Article in Portuguese | LILACS, BBO | ID: lil-93071

ABSTRACT

Trinta dentes caninos humanos, extraídos, tiveram seus canais radiculares preparados e, em seguida, obturados pelas técnicas de Condensaçäo Lateral Ativa, de Tagger et al. e de Nguyen. Foi analisado o limite apical da obturaçäo através de radiografias tomadas na fase da prova do cone e após aquela estar concluída. As alteraçöes de posiçöes das obturaçöes, entre as técnicas, näo apresentaram diferenças estatisticamente significantes


Subject(s)
Humans , Female , Male , Root Canal Obturation , Cuspid
14.
Rev. bras. odontol ; 46(3): 41-5, maio-jun. 1989. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-857350

ABSTRACT

Trinta caninos humanos extraídos tiveram seus canais radiculares preparados e obturados pela técnica de condensação lateral ativa. Posteriormente foram submetidos à obturação retrógrada, retroinstrumentação com retrobturação ou somente a apicetomia. A magnitude da infiltração marginal não diferiu significantemente entre as técnicas estudadas (p>0,05). A qualidade das obturações apicais proporcionadas apresentaram-se estatisticamente diferentes (p>0,05), que em escala hierárquica correspondeu à seqüência anteriormente citada


Subject(s)
Apicoectomy , Retrograde Obturation , Root Canal Therapy
15.
Odontol. mod ; 15(1): 8-14, jan.-fev. 1988.
Article in Portuguese | LILACS, BBO | ID: biblio-852382

ABSTRACT

Os autores discutem a possibilidade de selar a abertura coronária na primeira sessão de tratamento no dente portador de abscesso dento-alveolar agudo na fase em evolução


Subject(s)
Humans , Abscess , Root Canal Irrigants
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