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1.
Braz. j. oral sci ; 21: e224013, jan.-dez. 2022. ilus
Article in English | LILACS, BBO | ID: biblio-1354702

ABSTRACT

Aim: The aim of the study was to evaluate the cleaning of mandibular incisors with WaveOne Gold® (WO) under different preparation techniques. Methods: A total of 210 human mandibular incisors were selected and divided into seven groups (n = 30), prepared by WO single-files (Small 20/.07 ­ WOS; Primary 25/.07 ­ WOP; Medium 35/.06 ­ WOM; or Large 45/.05 - WOL) and sequential-file techniques (WOS to WOP; WOS to WOM; and WOS to WOL). Further subdivision was made according to irrigation protocol: control group (manual irrigation - CON), E1 Irrisonic® - EIR, and EDDY® - EDD. Debris removal and the smear layer were evaluated by scanning electron microscopy. Data were analyzed by using Spearman's correlation test. The significance level was set at 5%. Results: For debris and smear layer removal, WOS and WOP, EIR differed from CON and EDD (p <0.05). Conclusion: Regardless of the instrumentation used, the agitation of the irrigant solution provided better cleanability. These findings reinforce the need for agitation techniques as adjuvants in cleaning root canal systems in mandibular incisors


Subject(s)
Root Canal Irrigants , Microscopy, Electron, Scanning , Root Canal Preparation , Endodontics
2.
Rev. Odontol. Araçatuba (Online) ; 43(1): 18-23, jan.-abr. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1361569

ABSTRACT

O presente artigo tem como objetivo relatar um caso clínico de selamento de perfuração com uma técnica de inserção modificada do MTA. Após a anestesia, foi realizado o isolamento absoluto do dente e remoção do material presente na câmara, com o auxílio do inserto ultrassônico Smart X 1. Realizada a limpeza da perfuração utilizando hipoclorito de sódio e modelagem do canal com o instrumento rotatório, a obturação foi concebida com cone de guta percha e cimento AHPlus. Com broca Gates Glidden #3 foi removida a guta percha até o nível da perfuração. Em seguida, 5 mg de MTA branco foi manipulado, de acordo com recomendações do fabricante usando água destilada na proporção 1:1 e inserido na canaleta de uma régua endodôntica. Com o auxílio do instrumento de RHEM o material foi removido da canaleta e inserido na perfuração, concluindo o vedamento da mesma. Conclui-se neste caso clínico que o selamento de perfuração com MTA obteve sucesso clínico e radiográfico, utilizando a técnica de inserção com MTA modificada(AU)


This article aims to report a clinical case of sealing drilling rig with a modified MTA insertion technique. After anesthesia, the absolute isolation of the tooth and removing the material present in the Chamber, with the aid of ultrasonic Insert Smart X 1. Held drilling cleaning using sodium hypochlorite and modeling the canall with the Rotary instrument, the filling was designed with cone of gutta percha and cement AHPlus. With Gates Glidden bur #3 removed the gutta percha drilling level. Then 5 mg of white MTA was handled, according to manufacturer 's recommendations using distilled water in the ratio 1:1 and inserted in a canal endodontic ruler. With the aid of RHEM instrument the material was removed from the canal and inserted in drilling, completing the enclosure. It is concluded in this case that the sealing of drilling with clinical and radiographic success MTA, using the technique of does not avoid inserting rotating instrument. The obturation was performed with gutta percha cone and AHPlus cement. Removed gutta percha with Gates Glidden drill to drill level. Then, 5 mg of white MTA was handled, according to manufacturer 's recommendations using distilled water in the ratio 1: 1. Soon after, it was inserted in the caneleta of an endodontic ruler and with the aid of the instrument of RHEM the material was inserted in the indicated place. It is concluded in this clinical case that the perforation sealing with MTA obtained clinical and radiographic success, using the insertion technique with modified MTA(AU)


Subject(s)
Humans , Male , Middle Aged , Root Canal Filling Materials , Root Canal Obturation , Root Canal Therapy , Sodium Hypochlorite , Biocompatible Materials , Root Canal Preparation , Gutta-Percha
3.
Braz. dent. sci ; 25(2): 1-14, 2022. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1370579

ABSTRACT

Objective: Various glide path preparation techniques have been introduced, providing easiness to the practitioners. Recent literature has shown that glide path preparation influences the levels of postoperative pain occurrence in individuals receiving endodontic therapy. This systematic review aims to compare the different glide path preparation system in reduction of postoperative pain. Material and Methods: Electronic databases such as PubMed, Scopus, Cochrane Library, LILACS, Google Scholar, and European PMC were searched for published articles until July 2020. The studies included were randomized control trial (RCT) studies published during this time frame with comparison of continuous glide path system with various other glide path systems in reducing postoperative pain. The studies were reviewed using Preferred Reporting Items for Systematic reviews and Meta­Analyses (PRISMA) guidelines. The studies were reviewed independently by two reviewers who had assessed the included studies, extracted data and the quality using the Cochrane risk of bias assessment tool. Results:544 studies were received from the initial search, 11 articles were included in full text appraisal, 4 studies were obtained for qualitative analysis. Mean VAS Scores showed an increased reduction of postoperative pain in continuous glide path treated individuals (1.90-0.20) compared to reciprocating glide path (2.00-0.50) and manual glide path (3.80-0.85). The consumptions of analgesics were seen to be as follows; Manual Glide Path > Reciprocating Glide Path > Continuous Glide Path. Three out of four studies showed an overall "high" risk of bias and another study showed an overall "unclear" bias. Conclusion: From the achieved results, continuous glide path with 5.25% NaOCl irrigation has shown better reduction of postoperative pain compared to other glide path systems. Individuals who had undergone manual glide path preparation showed higher incidence of postoperative pain compared to other systems. The consumption of analgesics was seen to be higher in manual glide path prepared individuals followed by reciprocating glide path and least being continuous glide path.(AU)


Objetivo: Várias técnicas de preparação do glide path têm sido introduzidas, permitindo maior facilidade aos profissionais. A literatura tem mostrado que a forma de preparação do glide path influencia nos níveis de dor pós-operatória em indivíduos que recebem tratamento endodôntico. Esta revisão sistemática tem como objetivo comparar os diferentes sistemas de preparação do glide path na redução de dor pós-operatória. Material e Métodos: Bases de dados eletrônicas como PubMed, Scopus, Cochrane Library, LILACS, Google Escolar, e European PMC foram utilizadas para pesquisar artigos publicados até Julho de 2020. Os estudos incluídos foram ensaios clínicos randomizados controlados (ECRC) publicados até este período de tempo que compararam sistema de glide path contínuo com outros sistemas de glide path na redução de dor pós-operatória. Para revisão dos estudos, foi utilizado o 'Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines'. Dois revisores analisaram, independentemente, os estudos incluídos, os dados extraídos e a qualidade através da ferramenta de avaliação de risco de viés da Cochrane. Resultados: 544 estudos foram encontrados na pesquisa inicial, 11 artigos foram selecionados para avaliação de texto completo, 4 estudos foram obtidos para a análise qualitativa. A pontuação média do VAS mostrou um aumento na redução de dor pós-operatória em indivíduos nos quais foi utilizado o sistema de glide path rotatório contínuo (1.90-0.20) quando comparados àqueles nos quais foram utilizados o glide path reciprocante (2.00-0.50) e o glide path manual (3.80-0.85). A utilização de analgésicos foi vista da seguinte forma: Glide path Manual > Glide Path Reciprocante > Glide Path Contínuo. Três dos quatro estudos apresentaram um "alto" risco de viés geral e o outro estudo apresentou risco de viés geral "incerto". Conclusão: O glide path contínuo com irrigração de 5.25% de NaOCl mostrou a melhor redução de dor pós-operatória comparado aos demais sistemas de glide path. Indivíduos que foram submetidos à preparação de glide path pelo sistema manual apresentaram a maior incidência de dor pós-operatória. O consumo de analgésicos foi maior diante do uso do glide path manual, seguido pelo glide path reciprocante, e por último pelo glide path contínuo. (AU)


Subject(s)
Pain , Sodium Hypochlorite , Root Canal Preparation , Endodontics , Analgesics
4.
Braz. j. oral sci ; 20: e21378, jan.-dez. 2021. tab
Article in English | LILACS, BBO | ID: biblio-1254637

ABSTRACT

Aim: To evaluate the apical extrusion of debris in flat-oval canals, using three reciprocating systems at two different working lengths (WL), 0 mm and 1 mm from the apical foramen. Methods: Ninety mandibular incisors were randomly divided into three groups based on the systems: WaveOne Gold #25.07 (WOG), ProDesign R #25.06 (PDR), and X1 Blue #25.06 (X1B). Extruded debris were collected and dried in pre-weighed Eppendorf tubes. Three consecutive weighings were performed for each tube, and the mean was calculated. If the assumptions of normality and homogeneity of variance were not met, the Kruskal-Wallis test was used to analyze the amount of extruded debris between groups with the same WL, and the Mann-Whitney U test was used for comparison within groups for each WL. Results: All groups had extruded debris, with higher median values occurring at 1 mm. No significant difference regarding the amount of debris extrusion was observed at 0 mm (p>0.05) and 1 mm (p>0.05) between groups. However, within the groups, at different WL, there was greater extrusion at 1 mm (p<0.05), with PDR differing significantly from the other systems (p<0.05). Conclusion: The extrusion of debris occurred regardless of the group, with higher values at 1 mm. However, using PDR at 1 mm from the apical foramen showed the highest values of extrusion


Subject(s)
Root Canal Preparation , Tooth Apex , Dental Pulp Cavity
5.
Rev. Asoc. Odontol. Argent ; 109(2): 81-85, ago. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1348364

ABSTRACT

Objetivo: Comparar el tiempo empleado por los instrumen- tos TruNatomy Medium y ProTaper Next X3 para penetrar hasta la longitud de trabajo la masa de obturaciones realizadas con Gut- taCore Primary y sellador en conductos curvos simulados. Materiales y métodos: Se prepararon 20 conductos curvos simulados con instrumentos rotatorios WaveOne Gold Primary y se obturaron con GuttaCore Primary y AH Plus. Las muestras fueron divididas en dos grupos de 10 cada uno. Grupo 1: El material de obturación fue penetrado hasta la lon- gitud de trabajo con instrumentos TruNatomy Medium. Gru- po 2: El material de obturación fue penetrado hasta la longitud de trabajo con instrumentos ProTaper Next X3. Se registraron los tiempos de penetración requeridos para cada grupo y los valores obtenidos fueron analizados mediante la prueba t de Student. Resultados: Los instrumentos ProTaper Next X3 pe- netraron la masa del material de obturación más rápidamente que los instrumentos TruNatomy MediumTM. Las diferencias observadas entre ambos instrumentos fueron estadísticamente significativas (P <0.01). Conclusión: Si bien los instrumentos ProTaper Next X3 y TruNatomy MediumTM penetraron la masa de Gutta- Core Primary de manera eficiente, ProTaper Next X3 penetró hasta la longitud de trabajo más rápidamente (AU)


Aim: Compare the time required by the instruments TruNatomy Medium and ProTaper Next X3 to penetrate up to the working length the mass of fillings made with GuttaCore Primary and sealant in simulated curved canals. Materials and methods: The simulated canals of 20 EndoTraining Blocks were prepared with WaveOne Gold Pri- mary and obturated with GuttaCore Primary and AH Plus. The sample was divided into two groups of 10 each. Group 1: The sealing material was penetrated up to working length with TruNatomy Medium. Group 2: The sealing material was penetrated up to working length with ProTaper Next X3. The penetration time was recorded in each group and the obtained values were statistically analyzed with the Student's t test. Results: ProTaper Next X3 instruments penetrated the sealing material mass faster than TruNatomy Medium. Statis- tically significant differences were observed between the two instruments (P <0.01). Conclusion: While the ProTaper Next X3 and TruNat- omy Medium penetrated the GuttaCore mass to the working length efficiently, the ProTaper Next X3 did it in less time (AU)


Subject(s)
Root Canal Filling Materials , Root Canal Preparation/instrumentation , Retreatment , Gutta-Percha , Time Factors , Dental High-Speed Equipment , Dental Instruments , Dental Pulp Cavity/anatomy & histology
6.
Braz. dent. j ; 32(3): 1-9, May-June 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1345506

ABSTRACT

Abstract Decontamination of the root canal (RC) system is essential for successful endodontic therapy. In this in vitro study, it was evaluated the disinfection potential of an electrofulguration device, the Endox® Endodontic System (EES), in RC infected with Enterococcus faecalis. Sixty-five human lower premolars were instrumented with MTwo® system. The specimens were distributed into six experimental groups (n = 10), according to the irrigation protocol: 2% chlorhexidine gel (CHX); CHX + EES; 5.25% sodium hypochlorite (NaOCl); NaOCl + EES; saline solution (SS); and SS + EES. Five specimens were untreated (control). RC samples were collected before (C1) and after EES treatment (C2), after chemo-mechanical preparation (CMP) (C3), and after final EES treatment (C4). All samples were plated for colony forming units (CFU/mL) onto solid media. The data were analyzed by Wilcoxon and Friedman tests for intragroup comparisons and by Kruskal Wallis test followed by Dunn's test for intergroup comparisons (α = 0.05). Treatment with the EES did not significantly reduce the number of CFU/mL as compared to baseline levels (C1 vs. C2, p> 0.05). After CMP (C3), all groups showed a significantly reduced amount of CFU/mL (p <0.05), with no difference between CHX- and NaOCl-treated samples (p >0.05). Lastly, treatment with the EES following CMP (C4) did not significantly reduce the amount of CFU/mL (C3 vs. C4, p> 0.05). To conclude, the use of the Endox® Endodontic System did not result in considerable bacterial reduction at all operative times, while treatment with NaOCl and CHX was equally efficient for this purpose.


Resumo A descontaminação do sistema do canal radicular (CR) é essencial para o sucesso da terapia endodôntica. Neste estudo in vitro, foi avaliado o potencial de desinfecção de um dispositivo de eletrofulguração, o Endox® Endodontic System (EES), em CR infectado com Enterococcus faecalis. Sessenta e cinco pré-molares inferiores humanos foram instrumentados com o sistema MTwo®. As amostras foram distribuídas em seis grupos experimentais (n = 10), de acordo com o protocolo de irrigação: clorexidina gel a 2% (CHX); CHX + EES; Hipoclorito de sódio 5,25% (NaOCl); NaOCl + EES; solução salina (SS); e SS + EES. Cinco amostras não foram tratadas (controle). As amostras de CR foram coletadas antes (C1) e após o tratamento com EES (C2), após preparo químico-mecânico (PQM) (C3) e após o tratamento final com EES (C4). Todas as amostras foram plaqueadas para unidades formadoras de colônias (CFU / mL) em meio sólido. Os dados foram analisados pelos testes de Wilcoxon e Friedman para comparações intragrupos e pelo teste de Kruskal Wallis, seguidos pelo teste de Dunn para comparações intergrupos (α = 0,05). O tratamento com o EES não reduziu significativamente o número de CFU / mL em comparação com os níveis basais (C1 vs. C2, p> 0,05). Após PQM (C3), todos os grupos apresentaram uma quantidade significativamente reduzida de CFU / mL (p <0,05), sem diferença entre as amostras tratadas com CHX e NaOCl (p> 0,05). Por fim, o tratamento com o EES após PQM (C4) não reduziu significativamente a quantidade de CFU / mL (C3 vs. C4, p> 0,05). Concluindo, o uso do Endox® Endodontic System não resultou em redução bacteriana considerável em todos os momentos operatórios, enquanto os tratamentos com NaOCl e CHX foram igualmente eficientes para esse fim.


Subject(s)
Humans , Root Canal Irrigants , Dental Pulp Cavity , Sodium Hypochlorite , Chlorhexidine , Enterococcus faecalis , Root Canal Preparation
7.
Odontol. Clín.-Cient ; 20(3): 79-82, jul.-set. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1372467

ABSTRACT

A periodontite apical assintomática consiste na inflamação e na destruição do periodonto apical em decorrência de uma infecção no sistema de canais radiculares, após a necrose do tecido pulpar. O tratamento proposto para manutenção dos dentes que apresentam essa patologia é o tratamento endodôntico que pode ser realizado em sessão única ou múltiplas sessões. O objetivo desse estudo é relatar um caso clínico de regressão de uma periodontite apical assintomática, no dente 37, realizada em sessão única, com acompanhamento clínico e radiográfico de 60 e 90 dias. O preparo químico- -mecânico foi realizado com o sistema Reciproc blue (25.08 e 40.06) e uso do hipoclorito de sódio a 2,5%, como substância química auxiliar. O acompanhamento clínico e radiográfico foi realizado 60 e 90 dias após o procedimento, no qual, foi possível verificar a ausência de sintomatologia dolorosa, edema ou fístula na região da mucosa. A imagem radiolúcida, na região periapical, apresentou uma redução progressiva, sugerindo a evolução do reparo tecidual. Dessa forma, dentes com periodontite apical assintomática, após uma efetiva limpeza química e mecânica, realizados em sessão única, apresentam redução nos sinais clínicos e radiográficos, podendo obter um reparo tecidual... (AU)


Asymptomatic apical periodontitis consists of inflammation and destruction of the apical periodontium due to an infection in the root canal system, after pulp tissue necrosis. The proposed treatment for the maintenance of teeth that present this pathology is endodontic treatment that can be performed in a single session or multiple sessions. The objective of this study is to report a clinical case of regression of an asymptomatic apical periodontitis, in tooth 37, performed in a single session, with clinical and radiographic follow-up for 60 and 90 days. The chemical-mechanical preparation was carried out with the Reciproc blue system (25.08 and 40.06) and the use of 2.5% sodium hypochlorite as an auxiliary chemical. Clinical and radiographic follow-up was performed 60 and 90 days after the procedure, in which it was possible to verify the absence of painful symptoms, edema or fistula in the mucosa region. The radiolucent image in the periapical region showed a progressive dimensional reduction, suggesting the evolution of tissue repair. Thus, teeth with asymptomatic apical periodontitis, after an effective chemical and mechanical cleaning, performed in a single session, present a reduction in clinical and radiographic signs, which can lead to tissue repair... (AU)


Subject(s)
Humans , Female , Adult , Periapical Periodontitis , Periapical Tissue , Root Canal Preparation , Dental Pulp Cavity , Endodontics , Mucous Membrane
8.
Rev. Odontol. Araçatuba (Impr.) ; 42(1): 9-13, jan.-abr. 2021. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1148159

ABSTRACT

O objetivo do presente estudo foi mensurar o pH externo radicular de dentes bovinos que foram desinfetados em solução de cloramina por 7 dias. Neste estudo foram utilizadas soluções irrigadoras, hipoclorito de sódio 1%, clorexidina 0,12% e hipoclorito de sódio 2,5% associadas ao edta e as medicações intracanais, hidróxido de cálcio, hidróxido de cálcio com PMCC e clorexidina gel 2%. O preparo químico mecânico foi realizado com as limas easy logic e as soluções foram agitadas com ultrassom durante 3 minutos e após os dentes foram imersos em água deionizada em eppendorfs estéreis e mantidos em estufa a 37°C. O pH externo foi analisado utilizando as fitas medidoras de pH no período de 24 horas, 48 horas, 7 dias, 10 dias e 15 dias. A normalidade dos valores obtidos de cada ensaio foi testada através do teste Kolmogorof- Smirnov, e o teste estatístico foi ANOVA de uma via e comparações múltiplas de Tukey. Os resultados mostraram que houve diferença estatística nos valores de pH nos grupos avaliados dentro dos tempos (p< 0,05). Concluiu-se que mesmo com as variações de pH nos períodos avaliados, as medicações e as soluções irrigantes podem ser utilizadas de forma associadas na endodontia, com o intuito de eliminar o maior número de microrganismos dos canais radiculares(AU)


The objective of the present study was to measure the external root pH of bovine teeth that were disinfected in chloramine solution for 7 days. Irrigating solutions, 1% sodium hypochlorite, 0.12% chlorhexidine and 2.5% sodium hypochlorite associated with edta and intracanal medications, calcium hydroxide, calcium hydroxide with PMCC and chlorhexidine gel 2%. The mechanical chemical preparation was performed with the easy logic files and the solutions were shaken with ultrasound for 3 minutes and after the teeth were immersed in deionized water in eppendorfs and kept in an oven at 37 ° C. The external pH was analyzed using the pH measuring tapes in the period of 24 hours, 48 hours, 7 days, 10 days and 15 days. The normal values obtained from each test were tested using the Kolmogorof-Smirnov test, and the statistical test was one-way ANOVA and Tukey's multiple comparisons. The results showed that there was a statistical difference in pH values in the groups evaluated within the times (p< 0.05). It was concluded that even with pH variations in the evaluated periods, medications and irrigating solutions can be used in an associated way in endodontics, in order to eliminate the largest number of microorganisms in the root canals(AU)


Subject(s)
Root Canal Irrigants , Root Canal Preparation , Sodium Hypochlorite , Calcium Hydroxide , Chloramines , Chlorhexidine , Analysis of Variance , Edetic Acid , Endodontics
9.
Braz. dent. j ; 32(1): 104-110, Jan.-Feb. 2021. graf
Article in English | LILACS, BBO | ID: biblio-1180730

ABSTRACT

Abstract These case reports aimed to describe the management of lateral perforation in the middle cervical third of the root in two maxillary incisors with pulp canal calcification using Bio-C Repair, with safe and viable clinical treatment strategies. Digital radiographic exams were obtained with different angles and analyzed using different filters. Cone-beam computed tomography (CBCT) images were requested to show the actual position of the canal, location of the perforation, and guide the strategic planning of the case. Subsequently, cavity access was prepared with the aid of dental operating microscopy. After perforation was identified, granulation tissue was removed and the original canal was identified and then dressed with calcium hydroxide. In the second visit, the perforation was filled with Bio-C Repair and the canal system filled with gutta-percha points and a root canal sealer (Bio-C Sealer). The teeth were restored with glass fiber post, 4 mm beyond the perforation level, and provisory crowns. Both teeth treated as described above were functional and asymptomatic with a 1-year clinical and radiographic assessment. The Bio-C Repair is suggested as a new cement option for the management of lateral canal perforations, with effective results as observed after a one-year follow-up.


Resumo O presente relato de caso teve como objetivo descrever o manejo da perfuração lateral no terço médio cervical da raiz em dois incisivos superiores com calcificação pulpar utilizando o Bio-C Repair, com estratégias de tratamento clínico seguras e viáveis. Radiografias digitais foram obtidas em diferentes ângulos e analisadas com diferentes filtros. Imagens de tomografia computadorizada de feixe cônico (TCFC) foram solicitadas para mostrar a real posição do canal e a localização da perfuração, e orientar o planejamento estratégico do caso. Posteriormente, o acesso à cavidade foi preparado com auxílio de microscopia cirúrgica. Após a identificação da perfuração, o tecido de granulação foi removido, o canal original foi identificado e, em seguida, recebeu medicação intracanal à base de hidróxido de cálcio. Na segunda visita, a perfuração foi selada com Bio-C Repair e o sistema de canais obturado com cones de guta-percha e cimento endodôntico (Bio-C Sealer). Os dentes foram restaurados com pino de fibra de vidro, 4 mm além do nível da perfuração, e coroas provisórias. Ambos os dentes tratados conforme descrito acima se mostraram funcionais e assintomáticos na avaliação clínica e radiográfica de 1 ano. O Bio-C Repair é sugerido como uma nova opção de cimento endodôntico para o manejo de perfurações laterais, com resultados efetivos observados após um ano de acompanhamento.


Subject(s)
Humans , Root Canal Filling Materials , Root Canal Preparation , Root Canal Obturation , Calcium Hydroxide , Dental Pulp Cavity , Gutta-Percha
10.
J. oral res. (Impresa) ; 10(1): 1-7, feb. 24, 2021. ilus, graf, tab
Article in English | LILACS | ID: biblio-1282565

ABSTRACT

Objective: The aim of this study was to assess the micro-push-out bond strength of a mineral-based root canal sealer, BioRoot RCS in canals prepared by K3XF rotary systems of two different tapers. Material and Methods: Eighty caries free maxillary central incisors were used in this study. The samples were allocated into 4 groups (n=20) according to the root canal sealer and taper of the rotary instruments. The samples were obturated using single cone obturation technique. From each root 1mm thick slices at coronal, middle and apical thirds were collected using hard tissue microtome under continuous water coolant. Push-out tests were done for these sections using a Universal testing machine (INSTRON 8801) at a crosshead speed of 1mm/min. One-way analysis of variance (ANOVA) was used to compare the bond strengths within groups and Tukey's multiple post hoc analysis was used for pair-wise comparison of bond strengths. Results: AH Plus exhibited higher micro-push-out bond strength than BioRootRCS though they did not differ significantly (p>0.05). Preparation of root canals with 6% taper rotary instruments showed higher bond strength than 4% though they did not differ significantly (p>0.05). Conclusion: There was no significant difference between micro-push-out bond strength values of BioRoot RCS and AH Plus. The bond strength values were high in 6% taper canals than 4% canals though the difference was not significant statistically.


Objetivo: El objetivo de este estudio fue evaluar la fuerza de unión por micro-expulsión de un sellador de conductos radiculares de base mineral, BioRoot RCS, en conductos preparados por sistemas rotativos K3XF con dos conos diferentes. Material y Métodos: En este estudio se utilizaron 80 incisivos centrales superiores libres de caries. Las muestras se distribuyeron en cuatro grupos (n = 20) de acuerdo al sellador del conducto radicular y al cono de los instrumentos rotativos. Las muestras se obturaron mediante la técnica de obturación de un solo cono. De cada raíz se recogieron rodajas de 1 mm de grosor en los tercios coronal, medio y apical utilizando un micrótomo de tejido duro con refrigeración continua por agua. Posteriormente, se realizó una prueba de expulsión para estas secciones utilizando una máquina de prueba universal (INSTRON 8801) a una velocidad del cabezal transversal de 1mm/min. Se utilizó el análisis de varianza unidireccional (ANOVA) para comparar las resistencias de la unión dentro de los grupos y el análisis post hoc multiple de Tukey se utilizó para la comparación por pares de las resistencias de la unión. Resultados: AH Plus exhibió una fuerza de unión de micro-expulsión más alta que BioRootRCS, aunque no difirieron significativamente (p>0,05). La preparación de los conductos radiculares con instrumentos rotativos ahusados al 6% mostró una fuerza de unión superior al 4%, aunque no difirieron significativamente (p>0,05). Conclusión: No hubo diferencias significativas entre los valores de fuerza de unión de micro-expulsión de BioRoot RCS y AH Plus. Los valores de la fuerza de unión fueron más altos en canales cónicos al 6% que en canales al 4%, aunque la diferencia no fue significativa estadísticamente.


Subject(s)
Humans , Root Canal Filling Materials , Root Canal Obturation/methods , Dentin-Bonding Agents , Flexural Strength , Resins, Synthetic , Analysis of Variance , Root Canal Preparation , Dental Pulp Cavity , Epoxy Resins/chemistry , Minerals
11.
Article in English | LILACS, BBO | ID: biblio-1143396

ABSTRACT

ABSTRACT Objective: To determine the impact of distinctive instrumentation systems of the root canals on the endotoxin lessening through the root canals. Material and Methods: From the electronic databases, MEDLINE, PubMed, Cochrane Library, Embase, ISI, Google Scholar have been used to perform a systematic literature review between 2015 and 2020. Therefore, a software program (Endnote X9) has been utilized for managing electronic titles. Searches were performed with keywords, "root canal," "instrumentation," "endotoxin," "root canal preparation," "biofilm" "endodontics," and "lipopolysaccharide." This systematic review has been conducted on the basis of the key consideration of the PRISMA Statement-Preferred Reporting Items for the Systematic Review and Meta-analysis. Results: Hence, 163 potentially important abstracts and research topics have been discovered by electronic searches and three studies (3 RCTs) have been included. According to the outputs, any statistically significant differences have been not found between the rotary files and reciprocation (SMD 0.51, 95% CI [0.11, 0.90], p=0.011) (I2 = 49.5%; p=0.138). Conclusion: Analyses indicated that instrumentation methods decreased the content of endotoxin from the root canals.


Subject(s)
Lipopolysaccharides , Meta-Analysis as Topic , Root Canal Preparation , Dental Pulp Cavity , Endodontics , Iran
12.
Rev. Cient. CRO-RJ (Online) ; 6(2): 40-44, 2021.
Article in English | LILACS, BBO | ID: biblio-1357524

ABSTRACT

Objective: to evaluate the amount of apical debris extrusion during root canal preparation using continuous and reciprocating systems. Material and Methods: Forty lower incisors were selected and randomly divided into four groups (n=10) for root canal preparation. Two multifile systems with continuous rotation (iRace® and Mtwo®) and two reciprocating single-file systems (Reciproc® and WaveOne®) were used. In the iRace® group, the R1 (15/.06), R2 (25/.04) and R3 (30/.04) instruments were used. In the Mtwo® group, the 10/.04, 15/.05, 20/.06, and 25/.06 instruments were used. In the Reciproc® and WaveOne® groups, the R25 and 25/.04 instruments were used, respectively. Apical debris extrusion was determined by calculating the difference between the pre- and post-instrumentation weight of the Eppendorf tubes. Statistical analysis was performed using the analysis of variance (ANOVA) test with the Bonferroni correction (p<0.05). Results: The iRace® group demonstrated significantly more apical extrusion than the Reciproc® group (p<0.05). There was no statistically significant difference between the Mtwo®, Reciproc®, and WaveOne® groups (p>0.05). Conclusion: All of the evaluated systems produced apical debris extrusion. The iRace® system produced more apical debris extrusion than the Reciproc® system, and there was no difference observed in this regard between the Mtwo®, Reciproc®, and WaveOne® systems.


Objetivo: avaliar a quantidade de debris extruidos apicalmente durante o preparo do canal radicular usando sistemas de rotação contínua e reciprocante. Materiais e Métodos: Quarenta incisivos inferiores foram selecionados e randomicamente divididos em quatro grupos (n=10) para o preparo do canal radicular. Dois sistemas de limas múltiplas de rotação contínua (iRace® e Mtwo®) e dois sistemas de limas únicas reciprocantes (Reciproc® e WaveOne®) foram usados. No grupo iRace®, foram utilizados os instrumentos R1 (15/.06), R2 (25/.04) e R3 (30/.04). No grupo Mtwo®, foram utilizados os instrumentos 10/.04, 15/.05, 20/.06, 25/.06. Nos grupos Reciproc® e WaveOne®, foram utilizados os instrumentos R25 e 25.04, respectivamente. A extrusão apical de debris foi calculada pela diferença entre os pesos dos tubos Eppendorf antes e após a instrumentação. A análise estatística foi feita usando o teste de análise de variância (ANOVA) seguida do teste de Bonferroni (p<0,05). Resultados: O grupo iRace® demonstrou significativamente mais extrusão quando comparado ao Reciproc (p<0,05). Não houve diferença estatisticamente significativa entre os grupos Mtwo®, Reciproc®, e WaveOne® (p>0,05). Conclusão: Todos os sistemas avaliados produziram extrusão apical de debris. O Sistema iRace® produziu mais extrusão apical de debris do que o Sistema Reciproc® e não foi observada diferença entre os sistemas Mtwo®, Reciproc® e WaveOne®.


Subject(s)
Endodontics , Root Canal Therapy , Root Canal Preparation , Dental Instruments
13.
Braz. dent. sci ; 24(4): 1-13, 2021. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1337652

ABSTRACT

Objective: Various glide path preparation techniques have been introduced, providing easiness to the practitioners. Recent literature has shown that glide path preparation influences the levels of postoperative pain occurrence in individuals receiving endodontic therapy. This systematic review aims to compare the different glide path preparation system in reduction of postoperative pain. Material and Methods: Electronic databases such as PubMed, Scopus, Cochrane Library, LILACS, Google Scholar, and European PMC were searched for published articles until July 2020. The studies included were randomized control trial (RCT) studies published during this time frame with comparison of continuous glide path system with various other glide path systems in reducing postoperative pain. The studies were reviewed using Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. The studies were reviewed independently by two reviewers who had assessed the included studies, extracted data and the quality using the Cochrane risk of bias assessment tool. Results: 544 studies were received from the initial search, 11 articles were included in full text appraisal, 4 studies were obtained for qualitative analysis. Mean VAS Scores showed an increased reduction of postoperative pain in continuous glide path treated individuals (1.90-0.20) compared to reciprocating glide path (2.00-0.50) and manual glide path (3.80-0.85) The consumptions of analgesics were seen to be as follows: Manual Glide Path > Reciprocating Glide Path > Continuous Glide Path. Three out of four studies showed an overall "high" risk of bias and another study showed an overall "unclear" bias. Conclusion: From the achieved results, continuous glide path with 5.25% NaOCl irrigation has shown better reduction of postoperative pain compared to other glide path systems. Individuals who had undergone manual glide path preparation showed higher incidence of postoperative pain compared to other systems. The consumption of analgesics was seen to be higher in manual glide path prepared individuals followed by reciprocating glide path and least being continuous glide path (AU)


Objetivo: Várias técnicas de preparação do glide path têm sido introduzidas, permitindo maior facilidade aos profissionais. A literatura tem mostrado que a forma de preparação do glide path influencia nos níveis de dor pós-operatória em indivíduos que recebem tratamento endodôntico. Esta revisão sistemática tem como objetivo comparar os diferentes sistemas de preparação do glide path na redução de dor pós-operatória. Material e Métodos: Bases de dados eletrônicas como PubMed, Scopus, Cochrane Library, LILACS, Google Escolar, e European PMC foram utilizadas para pesquisar artigos publicados até Julho de 2020. Os estudos incluídos foram ensaios clínicos randomizados controlados (ECRC) publicados até este período de tempo que compararam sistema de glide path contínuo com outros sistemas de glide path na redução de dor pós-operatória. Para revisão dos estudos, foi utilizado o 'Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines'. Dois revisores analisaram, independentemente, os estudos incluídos, os dados extraídos e a qualidade através da ferramenta de avaliação de risco de viés da Cochrane. Resultados: 544 estudos foram encontrados na pesquisa inicial, 11 artigos foram selecionados para avaliação de texto completo, 4 estudos foram obtidos para a análise qualitativa. A pontuação média do VAS mostrou um aumento na redução de dor pós-operatória em indivíduos nos quais foi utilizado o sistema de glide path rotatório contínuo (1.90-0.20) quando comparados àqueles nos quais foram utilizados o glide path reciprocante (2.00-0.50) e o glide path manual (3.80-0.85). A utilização de analgésicos foi vista da seguinte forma: Glide path Manual > Glide Path Reciprocante > Glide Path Contínuo. Três dos quatro estudos apresentaram um "alto" risco de viés geral e o outro estudo apresentou risco de viés geral "incerto". Conclusão: O glide path contínuo com irrigração de 5.25% de NaOCl mostrou a melhor redução de dor pós-operatória comparado aos demais sistemas de glide path. Indivíduos que foram submetidos à preparação de glide path pelo sistema manual apresentaram a maior incidência de dor pós-operatória. O consumo de analgésicos foi maior diante do uso do glide path manual, seguido pelo glide path reciprocante, e por último pelo glide path contínuo. (AU)


Subject(s)
Pain , Sodium Hypochlorite , Root Canal Preparation , Endodontics , Analgesics
14.
Article in English | LILACS, BBO | ID: biblio-1351219

ABSTRACT

ABSTRACT Objective: To determine in vitro the frequency, shape, type, diameter, and patency of accessory canals in the primary molars pulp chamber floor. Material and Methods: Sixteen healthy primary molars were evaluated by micro-computed tomography and scanning electron microscopy. Descriptive analyses of the frequency, shape (round, oval, or irregular), type (blind, true, or hidden), patency and diameter of the accessory canals were performed. Results: Half of the teeth presented accessory canals, 62.5% of which were located in the upper molars and 37.5% in the lower molars. The most frequent shape was irregular. In three-dimensional analysis, blind accessory canals (12.5%) and with patency (18.7%) of the teeth were observed. The average accessory canal diameter was 51.97 µm (± 26.03 µm). Conclusion: Upper molars showed a higher frequency of accessory canals with larger diameters. The irregular shape was the most frequent. 18.7% of accessory channels showed patency.


Subject(s)
Humans , Male , Female , Child , In Vitro Techniques/methods , Microscopy, Electron, Scanning/instrumentation , Root Canal Preparation/instrumentation , X-Ray Microtomography/instrumentation , Molar , Brazil/epidemiology , Statistics, Nonparametric , Dental Pulp Cavity/anatomy & histology
15.
Arq. odontol ; 57: 199-207, jan.-dez. 2021. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1348086

ABSTRACT

Objetivo: Comparar o aumento percentual da área da secção reta transversal de canais radiculares, no nível de 3 mm aquém do ápice radicular, após instrumentação com dois sistemas de instrumento único. Métodos: Dezenove primeiros molares inferiores extraídos tiveram as raízes mesiais seccionadas no nível de 3 mm aquém do ápice radicular, sendo os 2 milímetros finais de cada raiz removidos e descartados, para proceder a mensuração da área pré-operatória, através de estereomicroscopia. As raízes foram instrumentadas com os sistemas SAF e Reciproc R25.08 e procedeu-se nova mensuração para comparação do aumento percentual da área. O aumento percentual da área da secção reta transversal foi comparado e analisado estatisticamente pelo teste t de Student. O nível de significância foi estabelecido em 5% (p < 0,05). Resultados: O aumento percentual da área dos canais foi significativamente maior para o grupo Reciproc (p = 0,001) em comparação com o grupo SAF. Os canais instrumentados com o sistema SAF tiveram sua área aumentada em média 53,5%, enquanto que nos instrumentados com o sistema Reciproc a média foi 154,5%. Conclusão: O sistema Reciproc proporcionou um aumento percentual da área da secção reta transversal dos canais radiculares, no nível dos 3 mm apicais, 3 vezes maior que o sistema SAF.


Aim: To compare the percentage increase in the cross-sectional area of root canals, at the level of 3 mm from the root apex after instrumentation with two single instrument systems. Methods: The roots of 19 extracted mandibular first molars were sectioned 3 mm short of the apex level, with the final 2 millimeters of each root removed and discarded in order to enable the preoperative area to be measured by stereomicroscopy. Subsequently, the roots were instrumented with the SAF and Reciproc 25/.08 systems, alternating the technique used per canal from root to root, and a new measurement was performed. After, the percentage increase in area was calculated considering the values of the original and the final area. The Student'st-test was applied to the results, with a level of significance set at 5%. Results: The percentage increase in area of the root canals was significantly higher for the Reciproc (p = 0.001) when compared to the SAF group. In the canals instrumented with the SAF system, the mean increase in area was 53.5%, while in those using the Reciproc system, it was 154.5%. Conclusion:The Reciproc system produced a 3-fold higher percentage increase in the cross-sectional area of the root canals at the level of 3 mm from the root apex than did the SAF system.


Subject(s)
Humans , Tooth Root/surgery , Root Canal Preparation/instrumentation , Dental Pulp Cavity/surgery , Dental Instruments
16.
Article in English | LILACS, BBO | ID: biblio-1180870

ABSTRACT

ABSTRACT Objective: To compare the effect of Maleic acid and Irritrol (combination of Chlorhexidine & Ethylenediaminetetraacetic acid) irrigation on the sealing ability of Biodentine when used as root-end filling material. Material and Methods: Thirty single-rooted human premolars were subjected to standardized root canal instrumentation and were irrigated with 2.5% Sodium Hypochlorite (NaOCl) after each instrument change. Apical root resections were done by removing 3 mm of the apex at a 90° angle to the long axis of the root with a diamond bur. The root end cavity preparation was done using ultrasonic tips at a low power setting under water coolant. They were randomly divided into 3 groups (n=10). Group 1 was irrigated with 7% Maleic acid, Group 2 was irrigated with Irritrol, and Group 3 was irrigated with 0.9% Saline (Control). Then, the root end cavities of all the samples were restored with Biodentine and were subjected to leakage analysis using a glucose filtration test. The mean values for each group were calculated and the obtained data was statistically analysed using ANOVA with post-hoc Tukey's test, ANOVA with post-hoc Games-Howell test and repeated measures ANOVA with post-hoc Bonferroni test. Results: The specimens irrigated with Irritrol showed least microleakage as compared to 7% Maleic acid and 0.9% Saline. Conclusion: A regimen involving irrigation of the root-end cavity with Irritrol followed by root-end filling with Biodentine can improve the apical seal.


Subject(s)
Humans , Acids , Root Canal Preparation/instrumentation , Dental Materials , Dental Pulp Cavity , Bicuspid , Radiography, Dental/instrumentation , Analysis of Variance , India
17.
Braz. oral res. (Online) ; 35: e003, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132743

ABSTRACT

Abstract: The present study investigated the intracanal decontamination and apical extrusion of bacteria and debris from root canals instrumented with rotary and reciprocating systems (ProDesign Logic or ProDesign R), with different file diameters and using conventional syringe irrigation (CSI) or passive ultrasonic irrigation (PUI). Eighty extracted mandibular premolars were contaminated with Enterococcus faecalis and randomly assigned to eight experimental groups according to the root canal instrumentation and irrigation technique employed (n = 10): G1: Prodesign Logic 25.06; G2: Prodesign R 25.06; G3 and G4 were instrumented with the same single-file systems, respectively, using 35.05 diameters and CSI. G5, G6, G7, and G8 were instrumented like the previous groups, but with PUI. Apically extruded debris during instrumentation was collected into pre-weighed microtubes. The weight of the empty microtube was subtracted from the final weight to establish the amount of extruded debris. Bacteria from root canals and extruded debris were collected for a microbiological evaluation of colony forming units (CFU/mL). For statistical analyses, the Mann-Whitney and Kruskal-Wallis followed by the Dunn's tests were used (α = 0.05). All instruments caused extrusion of debris. For irrigation techniques, PUI promoted greater debris and bacterial extrusion (p < 0.05). The CFU/mL count indicated that the instrumentation of the experimental groups were equally effective in the decontamination of the root canal (p > 0.05). The systems tested (regarding file diameter and kinematics) were associated with similar amounts of apically extruded debris and root canal decontamination. PUI was associated with greater debris and bacterial extrusion.


Subject(s)
Humans , Root Canal Preparation , Tooth Apex , Ultrasonics , Biomechanical Phenomena , Decontamination , Dental Pulp Cavity
18.
Braz. oral res. (Online) ; 35: e008, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132748

ABSTRACT

Abstract: The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on the evaluation of debris accumulation after passive ultrasonic irrigation (PUI) in curved root canals prepared with rotary nickel-titanium files. Mesial root canals (n = 24) of mandibular molars with curvature between 25° and 35° were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). PUI was performed after root canal preparation of all root canals. The specimens were scanned using high-resolution (5 μm voxel size) micro-CT imaging before and after experimental procedures. The percentage of debris was analyzed in the middle and apical thirds using images with 5, 10 and 20 μm voxel sizes. Data were compared using unpaired and paired Student's t-test, ANOVA and Tukey's statistical tests (α = 0.05). There were no differences among the debris analyses performed at different voxel sizes (5, 10 and 20 μm) (p > 0.05). The percentage of debris was similar between the root canals prepared by PDL and HEDM before and after PUI (p > 0.05). In both groups, the percentage of debris decreased in the middle third after PUI (p < 0.05). Within the limitations of this ex vivo study, it can be concluded that the voxel sizes evaluated did not have a significant impact on the analysis of accumulated debris. However, the results showed a tendency for detection of more debris in the analysis performed using a lower voxel size. PUI decreased the debris accumulation in the middle third of curved root canals.


Subject(s)
Humans , Root Canal Preparation , Dental Pulp Cavity/diagnostic imaging , X-Ray Microtomography , Molar/diagnostic imaging
19.
Braz. oral res. (Online) ; 35: e080, 2021. graf
Article in English | LILACS, BBO | ID: biblio-1278598

ABSTRACT

Abstract: This research evaluated, in vivo, the accuracy of three electronic apex locators - EALs (Root ZXII, E-PEX and FIND) in teeth with vital pulp submitted to biopulpectomy, preserving the periodontal stump. For this study, 90 single-rooted teeth with extraction indication were selected. After positive pulpal cold sensitivity test, pulp chamber access was performed. The cervical and middle thirds of root canals were instrumented with Reciproc R25, and the K#15 file was used as a standard instrument to determine working length, forming 2 groups: Constriction (insertion of the instrument until the apical constriction limit) and Foramen (insertion of the instrument until the foramen and then repositioning at constriction, without removing the file from the canal). The hand file was stabilized with a light-cured flow resin. After extraction, the samples were analyzed through microCT SkyScan 1272, with CTAN software, which evaluated the proximity between the tip of the file to the apical constriction, providing data for comparative analysis using Kruskal-Wallis and Dunn tests (p<0.05). There was a statistically significant difference in the abilities of the EALs to detect the apical constriction after reaching the foramen with Root ZX II showing higher accuracy (89%). However, there was no difference in the accuracy of the three EALs in detecting the apical constriction without reaching the foramen. Based on the present results, we conclude that EALs may show accurate measures in detecting apical constriction and foramen, even without damaging the periodontal stump in biopulpectomy.


Subject(s)
Tooth Apex/diagnostic imaging , Dental Pulp Cavity , Tooth Root , Root Canal Preparation , X-Ray Microtomography , Odontometry
20.
Braz. oral res. (Online) ; 35: e064, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1249380

ABSTRACT

Abstract: Sixty moderately curved canals of mandibular molars classified as Vertucci's type IV canal configuration were selected by micro-CT 1174. The teeth were divided into two groups according to the kinematics used, whether reciprocating or rotary motion (n=30, totaling 60 mesial root canals). The instruments used to perform the glide path procedures had identical features (0.15 mm of tip size, 0.04 mm/mm taper, thermal treatment, and square cross-section), but differed in the direction of the cutting blade. The duration of the procedure and the absolute and percentage frequency of the instruments to reach the full working length were recorded. The torsional test (3630-1; 1992) was performed on both used and unused instruments, to evaluate a possible reduction in the torsional resistance when using the glide path procedure. Statistical analysis was performed using the unpaired t-test and the chi-square test, and the level of significance was set at 5%. The type of kinematics used affected the duration of glide path procedures, and the reciprocating motion seemed to induce less torsional stress during glide path procedures.


Subject(s)
Root Canal Preparation , Dental Pulp Cavity , Biomechanical Phenomena , Equipment Design , X-Ray Microtomography , Molar/diagnostic imaging
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