RESUMO
INTRODUCTION: Laser ablation (LA) therapy is used as an adjunct to endodontic treatment to improve microbial reduction. However, studies evaluating the impact of LA with indocyanine green (ICG) are scarce. This study aimed to evaluate the antimicrobial efficacy of LA therapy with ICG in root canal treatment. METHODS: Sixty patients with periapical lesions in teeth with a single canal and absence of pain, edema, and previous treatment were selected. Patients were randomly allocated into 3 groups according to the apical sizes used (n = 20); 25/04, 30/04, and 35/04 were the final sizes used. In half the patients of each group, 2.5% sodium hypochlorite was used as an irrigating solution, and in the other half, saline solution was used. After instrumentation, all patients received LA therapy with ICG. Root canal sampling was performed before (S1) and after (S2) root canal instrumentation and immediately after LA therapy with ICG (S3). Colony-forming units were counted, and statistical tests were applied (P < .05). RESULTS: There was a significant reduction in colony-forming units from S1 to S2 in all treatment protocols (P < .05); 2.5% sodium hypochlorite as an irrigating solution showed a greater microbial reduction compared with saline solution (P < .05). LA therapy with ICG further reduced the microbial counts significantly (S2 to S3 and S1 to S3) whether sodium hypochlorite or saline was used (P < .05). CONCLUSIONS: LA therapy with ICG significantly increased microbial reduction in root canals regardless of instrumentation sizes or the irrigation solution used.
Assuntos
Anti-Infecciosos , Terapia a Laser , Humanos , Cavidade Pulpar , Hipoclorito de Sódio/uso terapêutico , Verde de Indocianina/uso terapêutico , Solução Salina , Preparo de Canal Radicular , Tratamento do Canal Radicular , Irrigantes do Canal Radicular/uso terapêuticoRESUMO
OBJECTIVE: The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin. MATERIAL AND METHODS: Forty extracted single-rooted human teeth were examined and the coronal and middle thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post System, Pentron). The teeth were allocated in two experimental groups, irrigated with 2.5 percent NaOCl+17 percent EDTA or saline solution (control group) and instrumented using Race rotary files (FKG) to a size #40 at the working length. Then, the groups were divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ (Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of storage in 100 percent humidity at 37ºC, all teeth were sectioned transversally into 2-mm-thick discs. Push-out tests were performed at a cross-head speed of 1 mm/min using a universal testing machine. The maximum load at failure was recorded and expressed in MPa. RESULTS: Means (±SD) in root canals irrigated with 2.5 percent NaOCl and 17 percent EDTA were: G1 (21.6±6.0), G2 (15.2±3.7), G3 (14.6±4.5) and G4 (11.7±4.1).Two-way ANOVA and Tukey's test showed the highest bond strength for the Epiphany's group (p< 0.01) when compared to the other tested sealers. Saline solution decreased the values of bond-strength (p<0.05) for all sealers. CONCLUSION: Epiphany sealer presented higher bond strength values to dentin in both irrigating protocols, and the use of 2.5 percent NaOCl and 17 percent EDTA increased the bond strength values for all sealers.
Assuntos
Humanos , Colagem Dentária/métodos , Dentina/química , Materiais Restauradores do Canal Radicular/química , Análise de Variância , Bismuto/química , Resinas Compostas/química , Ácido Edético/química , Resinas Epóxi/química , Teste de Materiais , Obturação do Canal Radicular/métodos , Preparo de Canal Radicular/métodos , Camada de Esfregaço , Prata/química , Hipoclorito de Sódio/química , Titânio/química , Cimento de Óxido de Zinco e Eugenol/químicaRESUMO
OBJECTIVE: The aim of this in vitro study was to evaluate the bond strength of different root canal sealers to dentin. MATERIAL AND METHODS: Forty extracted single-rooted human teeth were examined and the coronal and middle thirds of the canals were prepared with a 1.50 mm post drill (FibreKor Post System, Pentron). The teeth were allocated in two experimental groups, irrigated with 2.5% NaOCl+17% EDTA or saline solution (control group) and instrumented using Race rotary files (FKG) to a size #40 at the working length. Then, the groups were divided into four subgroups and filled with Epiphany sealer (Group 1), EndoREZ (Group 2), AH26 (Group 3) and Grossman's Sealer (Group 4). After 2 weeks of storage in 100% humidity at 37ºC, all teeth were sectioned transversally into 2-mm-thick discs. Push-out tests were performed at a cross-head speed of 1 mm/min using a universal testing machine. The maximum load at failure was recorded and expressed in MPa. RESULTS: Means (±SD) in root canals irrigated with 2.5% NaOCl and 17% EDTA were: G1 (21.6±6.0), G2 (15.2±3.7), G3 (14.6±4.5) and G4 (11.7±4.1).Two-way ANOVA and Tukey's test showed the highest bond strength for the Epiphany's group (p< 0.01) when compared to the other tested sealers. Saline solution decreased the values of bond-strength (p<0.05) for all sealers. CONCLUSION: Epiphany sealer presented higher bond strength values to dentin in both irrigating protocols, and the use of 2.5% NaOCl and 17% EDTA increased the bond strength values for all sealers.
Assuntos
Colagem Dentária/métodos , Dentina/química , Materiais Restauradores do Canal Radicular/química , Análise de Variância , Bismuto/química , Resinas Compostas/química , Ácido Edético/química , Resinas Epóxi/química , Humanos , Teste de Materiais , Obturação do Canal Radicular/métodos , Preparo de Canal Radicular/métodos , Prata/química , Camada de Esfregaço , Hipoclorito de Sódio/química , Titânio/química , Cimento de Óxido de Zinco e Eugenol/químicaRESUMO
The aim of this in vitro study was to evaluate the bond strength of Epiphany resin-based sealer to dentin walls after placement of calcium hydroxide [Ca(OH)2] dressings. Fifteen extracted single-rooted human teeth were instrumented using 2.5% NaOCl + EDTA as irrigants. The teeth were randomly assigned to 3 groups (n=5), according to the intracanal dressing: G1= Ca(OH)2 + saline; G2= Ca(OH)2 + 2% chlorhexidine gluconate (CHX) gel; and G3= saline (control). After 10 days of storage in 100% humidity at 37 degrees C, the dressings were removed and the root canals were filled with Epiphany sealer. After additional 48 h of storage, the specimens were sectioned transversally into 2-mm-thick discs. Push-out tests were performed (1 mm/min, Instron 4411) and the maximum loads at failure were recorded in MPa. One-way ANOVA and Newman-Keuls tests showed a statistically significant decrease in bond strength when a Ca(OH)2 dressing was used before root canal filling with Epiphany (G1= 10.18 +/- 1.99 and G2= 9.98 +/- 2.97) compared to the control group (13.82 +/- 3.9) (p< 0.05). It may be concluded that the use of Ca(OH)2 as an intracanal dressing material affected the adhesion of Epiphany to the root canal walls, but even though the values were within the acceptable range found in the literature.
Assuntos
Hidróxido de Cálcio/química , Colagem Dentária , Materiais Restauradores do Canal Radicular/química , Irrigantes do Canal Radicular/química , Anti-Infecciosos Locais/uso terapêutico , Hidróxido de Cálcio/uso terapêutico , Quelantes/uso terapêutico , Clorexidina/análogos & derivados , Clorexidina/uso terapêutico , Desinfetantes de Equipamento Odontológico/uso terapêutico , Dentina/ultraestrutura , Ácido Edético/uso terapêutico , Humanos , Umidade , Teste de Materiais , Materiais Restauradores do Canal Radicular/uso terapêutico , Irrigantes do Canal Radicular/uso terapêutico , Preparo de Canal Radicular , Cloreto de Sódio , Hipoclorito de Sódio/uso terapêutico , Estresse Mecânico , Temperatura , Fatores de TempoRESUMO
The aim of this in vitro study was to evaluate the bond strength of Epiphany resin-based sealer to dentin walls after placement of calcium hydroxide [Ca(OH)2] dressings. Fifteen extracted single-rooted human teeth were instrumented using 2.5 percent NaOCl + EDTA as irrigants. The teeth were randomly assigned to 3 groups (n=5), according to the intracanal dressing: G1= Ca(OH)2 + saline; G2= Ca(OH)2 + 2 percent chlorhexidine gluconate (CHX) gel; and G3= saline (control). After 10 days of storage in 100 percent humidity at 37ºC, the dressings were removed and the root canals were filled with Epiphany sealer. After additional 48 h of storage, the specimens were sectioned transversally into 2-mm-thick discs. Push-out tests were performed (1 mm/min, Instron 4411) and the maximum loads at failure were recorded in MPa. One-way ANOVA and Newman-Keuls tests showed a statistically significant decrease in bond strength when a Ca(OH)2 dressing was used before root canal filling with Epiphany (G1= 10.18 ± 1.99 and G2= 9.98 ± 2.97) compared to the control group (13.82 ± 3.9) (p< 0.05). It may be concluded that the use of Ca(OH)2 as an intracanal dressing material affected the adhesion of Epiphany to the root canal walls, but even though the values were within the acceptable range found in the literature.
O objetivo desse estudo in vitro foi avaliar a resistência de união do cimento resinoso Epiphany às paredes dentinárias após aplicação de pastas de hidróxido de cálcio [Ca(OH)2]. Quinze dentes humanos uniradiculares foram igualmente instrumentados sob irrigação com as soluções de NaOCl 2,5 por cento + EDTA. Os dentes foram divididos em três grupos (n=5) e tratados com diferentes pastas de Ca(OH)2: G1= Ca(OH)2 + soro fisiológico; G2= Ca(OH)2 + 2 por cento CHX e G3= tratado apenas com soro fisiológico (grupo controle). Após 10 dias de armazenamento a 37°C e 100 por cento de umidade, as medicações foram removidas e os dentes obturados com o cimento Epiphany. Passadas 48 horas de armazenamento adicional, as amostras foram seccionadas tranversalmente em discos de 2 mm de espessura. Os testes de resistência de união (push-out) foram realizados em máquina de ensaio mecânico (1 mm/min) e os resultados expressos em MPa. Os testes de ANOVA e Newman-Keuls mostraram um significante decréscimo nos valores de resistência de união quando as pastas de Ca(OH)2 foram utilizadas (10,18 ± 1,99 e 9,98 ± 2,97) em comparação ao grupo controle (13,82 ± 3,9) (p<0,05). Pode-se concluir que o uso do Ca(OH)2 como medicação intracanal diminuiu a adesão do cimento Epiphany às paredes dos canais radiculares, embora os valores de resistência de união estejam dentro das médias aceitáveis encontradas na literatura.
Assuntos
Humanos , Hidróxido de Cálcio/química , Colagem Dentária , Materiais Restauradores do Canal Radicular/química , Irrigantes do Canal Radicular/química , Anti-Infecciosos Locais/uso terapêutico , Hidróxido de Cálcio/uso terapêutico , Quelantes/uso terapêutico , Clorexidina/análogos & derivados , Clorexidina/uso terapêutico , Desinfetantes de Equipamento Odontológico/uso terapêutico , Dentina/ultraestrutura , Ácido Edético/uso terapêutico , Umidade , Teste de Materiais , Preparo de Canal Radicular , Materiais Restauradores do Canal Radicular/uso terapêutico , Irrigantes do Canal Radicular/uso terapêutico , Cloreto de Sódio , Estresse Mecânico , Hipoclorito de Sódio/uso terapêutico , Temperatura , Fatores de TempoRESUMO
Trauma to the primary dentition present special problems and the management is often different as compared with permanent teeth. An appropriate emergency treatment plan is important for a good prognosis. Guidelines are useful for delivering the best care possible in an efficient manner. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialties were included in the group. In cases in which the data did not appear conclusive, recommendations were based on the consensus opinion of the IADT board members. The guidelines represent the current best evidence based on literature research and professional opinion. In this third article out of three, the IADT Guidelines for the management of traumatic injuries in the primary dentition, are presented.
Assuntos
Traumatismos Dentários/terapia , Dente Decíduo , Pré-Escolar , Consenso , Assistência Odontológica para Crianças/normas , Tratamento de Emergência/normas , Humanos , Traumatologia/normasRESUMO
Avulsion of permanent teeth is the most serious of all dental injuries. The prognosis depends on the measures taken at the place of accident or the time immediately after the avulsion. Replantation is the treatment of choice, but cannot always be carried out immediately. An appropriate emergency management and treatment plan is important for a good prognosis. Guidelines are useful for delivering the best care possible in an efficient manner. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialties were included in the group. In cases in which the data did not appear conclusive, recommendations were based on the consensus opinion of the IADT board members. The guidelines represent the current best evidence based on literature research and professional opinion. In this second article of three, the IADT Guidelines for management of avulsed permanent teeth are presented.
Assuntos
Avulsão Dentária/terapia , Adolescente , Criança , Teste da Polpa Dentária , Primeiros Socorros , Humanos , Odontogênese/fisiologia , Cooperação do Paciente , Educação de Pacientes como Assunto , Exame Físico , Tratamento do Canal Radicular , Contenções , Fatores de Tempo , Ápice Dentário/fisiopatologia , Avulsão Dentária/cirurgia , Reimplante Dentário/métodos , Resultado do TratamentoRESUMO
Crown fractures and luxations occur most frequently of all dental injuries. An appropriate treatment plan after an injury is important for a good prognosis. Guidelines are useful for delivering the best care possible in an efficient manner. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialties were included in the group. In cases where the data did not appear conclusive, recommendations were based on the consensus opinion of the IADT board members. The guidelines represent the current best evidence, based on literature research and professional opinion. In this first article of three, the IADT Guidelines for management of fractures and luxations of permanent teeth will be presented.
Assuntos
Avulsão Dentária/terapia , Fraturas dos Dentes/terapia , Processo Alveolar/lesões , Colagem Dentária , Teste da Polpa Dentária , Dentição Permanente , Fixação de Fratura , Fraturas Ósseas/terapia , Humanos , Contenções Periodontais , Avulsão Dentária/diagnóstico , Coroa do Dente/lesões , Fraturas dos Dentes/diagnóstico , Raiz Dentária/lesõesRESUMO
BACKGROUND: The authors evaluated the fracture resistance of endodontically treated teeth filled with either gutta-percha or a new resin-based obturation material. METHODS: The authors prepared and randomly divided 80 single-canal extracted teeth into five groups: lateral and vertical condensation with gutta-percha, lateral and vertical condensation with the new resin-based obturation material, and a control group with no filling material. The specimens were stored in 100 percent humidity for two weeks, mounted in polyester resin and loaded to failure. RESULTS: The authors found statistically significant differences among the experimental groups (P < .05). The groups with the new material displayed higher mean fracture loads and the gutta-percha groups lower mean fracture load values than the control unfilled group. However, the differences were not significant. The groups with the new material displayed significantly higher mean fracture loads than gutta-percha groups independent of the filling technique used. CONCLUSIONS: Filling the canals with the new resin-based obturation material increased the in vitro resistance to fracture of endodontically treated single-canal extracted teeth when compared with standard gutta-percha techniques. CLINICAL IMPLICATIONS; If other properties of the new resin-based obturation material compare favorably with those of gutta-percha for filling the root canal, it should be considered as a replacement for gutta-percha, as the results of this study indicate that it could provide enhanced resistance to tooth fracture.