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1.
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
2.
Rev. Odontol. Araçatuba (Impr.) ; 42(3): 4-8, set.-dez. 2021. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1283897

ABSTRACT

Introdução: Os cones de guta percha são utilizados para obturação de canais radiculares, entretanto a desinfecção desses cones deve ser realizada previamente à obturação, evitando uma contaminação, uma vez que com o manuseio diário na clínica, pode ocorrer a proliferação de microrganismos. Objetivo: Relatar através de uma revisão de literatura a importância da desinfecção de cones de guta percha previamente á obturação dos canais radiculares, com diferentes soluções desinfetantes utilizadas na odontologia. Metodologia: Foi realizada uma busca em artigos de revisão de literatura nas bases de dados Pubmed, Scielo, Lilacs com diferentes anos de publicação, mas todos com enfoque principal no tema de desinfecção de cones de guta percha com diferentes soluções químicas. Foram utilizados os descritores guta percha, desinfecção, soluções químicas. Conclusão: Medidas de prevenção devem ser empregadas durante o atendimento odontológico, em especial durante a obturação dos canais radiculares, sendo a desinfecção dos cones de guta percha essencial(AU)


Introduction: Gutta percha points are used to fill root canals, however its disinfection must be performed prior to filling, avoiding contamination, since with daily handling in the proliferation of microorganisms can occur. Objective: To report through a literature review the importance of disinfecting gutta percha points prior to root canal filling, with different disinfectant solutions used in dentistry. Methodology: A search for literature review articles was carried out in the Pubmed, Scielo, Lilacs databases with different years of publications, but all with a main focus on the topic of disinfection of gutta-percha points with different chemical solutions. The keywords gutta percha, disinfection, chemical solutions were used. Conclusion: Preventive measures must be used during dental care, especially during root canal filling, with the disinfection of gutta percha points being an essential(AU)


Subject(s)
Root Canal Irrigants , Root Canal Obturation , Gutta-Percha , Root Canal Filling Materials , Dental Pulp Cavity
3.
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
4.
Rev. Asoc. Odontol. Argent ; 109(1): 9-19, ene.-abr. 2021. ilus, tab
Article in Spanish | LILACS | ID: biblio-1255416

ABSTRACT

Objetivo: Estimar y comparar la eficacia de diferentes técnicas de obturación para impedir el flujo de colorante a través de los conductos laterales. Materiales y métodos: Se emplearon 50 premolares inferiores extraídos y conservados en formol neutro al 5% hasta el momento de su uso, a los cuales se les realizaron conductos laterales artificiales. Una vez instrumentados los conductos principales, los dientes fueron divididos al azar en 5 grupos (n=10) para ser obturados con cuatro técnicas distintas: A) System B + inyección de gutapercha termoplástica del sistema Elements, Extruder; B) obturadores de Thermafil, ProTaper Universal; C) técnica híbrida y D) obturación con inyección de gutapercha termoplástica del sistema Elements, Extruder. Inmersos en tinta china y diafanizadas las raíces, se evaluó la longitud de penetración de la tinta en los conductos laterales. Se empleó el análisis de la varianza para detectar diferencias significativas (P<0,05) entre los niveles medios de penetración del colorante según las técnicas de obturación y las zonas del diente, y se efectuaron pruebas de rango múltiple (HSD de Tukey) para realizar comparaciones dos a dos, manteniendo fija la tasa de error por familia. Resultados: A la técnica B le correspondió el valor medio más bajo (30,63%) de penetración de tinta china. Los valores medios más elevados (54,52% y 51,74%) correspondieron a las técnicas A y C, respectivamente. Conclusión: Ninguna de las técnicas de obturación del conducto radicular empleadas ha sido capaz de impedir la filtración del colorante en los conductos laterales (AU)


Aim: To estimate and compare the different obturation techniques to avoid the flow of colorant through lateral canals. Materials and methods: 50 extracted lower premolars preserved in 5% neutral formol until the moment of use, had artificial lateral canals made. Once canals were instrumented, the teeth were randomly divided into 5 groups (n=10) to be filled with four different techniques: A) System B + injection of thermoplastic gutta-percha, Elements system, Extruder; B) Thermafil, ProTaper Universal obturators; C) hybrid technique, and D) injection of thermoplastic gutta-percha, Elements system, Extruder. Having immersed the premolars in India ink and diaphanized the roots, the penetration length of the India ink inside the canals was assessed. Analysis of variance was used to detect significant differences (P<0.05) between the mean levels of dye penetration according to the filling techniques and tooth areas, and multiple range tests (Tukey's HSD) were performed for two-to-two comparisons, keeping the error rate per family fixed. Results: Technique B had the lowest mean value (30.63%) of penetration. The highest mean values (54.52% and 51.74%) corresponded to techniques A and C, respectively. Conclusion: No obturation technique of the root canal used was able to avoid filtration of colourant in the lateral canals (AU)


Subject(s)
Humans , Root Canal Obturation , Dental Leakage/diagnosis , Gutta-Percha , Root Canal Filling Materials/chemistry , Bicuspid/anatomy & histology , Transillumination/methods , Statistical Analysis , Dental Pulp Cavity/anatomy & histology
5.
Dent. press endod ; 11(1): 35-39, Jan-Apr2021. Tab
Article in English | LILACS | ID: biblio-1348160

ABSTRACT

Introdução: O tratamento endodôntico busca sanificar o sistema de canais radiculares para permitir adequada obturação tridimensional. Para tanto, necessita-se de materiais plásticos, como a guta-percha, associados a cimentos endodônticos com adequadas características físico-químicas. Métodos: Comparação das propriedades físico-químicas tempo de endurecimento e escoamento dos cimentos endodônticos AH Plus e Sealer Plus, de acordo com a especificação 57 da American National Standard Institute/American Dental Association para materiais obturadores. Resultados: O tempo de endurecimento do AH Plus foi de 1178 minutos e do Sealer Plus foi de 422 minutos. O escoamento do APlus foi de 3259 milímetros e do Sealer Plus, 3150 milímetros. Conclusões: O tempo de endurecimento do AH Plus foi maior quando comparado ao do cimento Sealer Plus, e não houve diferença estatística no escoamento entre os cimentos estudados (AU).


Introduction: Endodontic treatment seeks to sanitize the root canal system to allow adequate three-dimensional filling, for which plastic materials such as guttapercha are required, associated with endodontic cements with adequate physico-chemical characteristics. Methods: Comparison of the physico-chemical properties hardening and flow time of the AH Plus and Sealer Plus endodontic sealers according to the American Dental Association / American Dental Association Specification 57 for sealing materials. Results: The hardening time of the AH Plus was 1178 minutes and the Sealer Plus was 422 minutes. The AH Plus flow was 3259 millimeters and the Sealer Plus was 3150 millimeters. Conclusions: The AH Plus hardening time was higher when compared to the Sealer Plus cement and there was no statistical difference in the flow between the cements studied (AU).


Subject(s)
Humans , Root Canal Obturation , Dental Cements , Gutta-Percha , Chemical Properties , Dental Pulp Cavity
6.
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
7.
Article in English | WPRIM | ID: wpr-887757

ABSTRACT

OBJECTIVES@#The safety of root canal filling with 200 °C hot gutta-percha was investigated to study the effect of continuous wave technique combined with high-temperature injectable gutta-percha condensation technique on the surface temperature of periodontal tissue.@*METHODS@#CT technique and Mimics, Geomagic, and Solidworks software were utilized to build the entity models of alveolar bone, dentin and root canal, periodontal ligament, and blood flow, respectively, which were then assembled in Solidworks into a finite element model of tooth with blood flow. By utilizing ABAQUS collaborative simulation platform, fluid-structure coupling was analyzed on the whole process of root canal filling. Consequently, the surface temperature of the periodontal tissue was obtained.@*RESULTS@#In the absence of blood flow, the temperature of the periodontal ligament surface reached 50.048 ℃ during root canal filling with 200 ℃ gutta-percha. Considering blood flow, the temperature of periodontal ligament surface was 39.570 ℃.@*CONCLUSIONS@#The temperature of the periodontal ligament surface increased when the continuous wave root canal was filled with 200 ℃ gutta-percha, and the periodontal tissue was not damaged.


Subject(s)
Dental Pulp Cavity , Finite Element Analysis , Gutta-Percha , Hot Temperature , Humans , Periodontium , Root Canal Filling Materials , Root Canal Obturation , Temperature
8.
Braz. oral res. (Online) ; 35: e028, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1153621

ABSTRACT

Abstract The aim of this study was to evaluate the filling ability of a new ready-to-use calcium silicate-based sealer using thermoplastic or single-cone technique in flattened root canals. Twenty-four flattened distal canals of mandibular molars with a buccolingual diameter 4 or more times larger than the mesiodistal diameter were selected. The root canals were prepared and filled (n = 12), according to the following techniques: thermoplastic or single-cone technique using Bio-C Sealer. The teeth were scanned using Skycan 1176 micro-computed tomography (micro-CT) - voxel size 8.74 µm, before and after filling the root canal. The percentage of voids in the filled root canals was evaluated, and the data were statistically analyzed using the unpaired t-test (α = 0.05). The root canals filled using the thermoplastic technique created a smaller percentage of voids in the cervical/middle thirds than those filled using the single-cone technique (p < 0.05). There was no difference in the percentage of voids using either technique in the apical third (p > 0.05). The flattened root canals in the cervical/middle thirds were better filled using the ready-to-use calcium silicate-based sealer associated to the thermoplastic technique, compared with the single-cone technique. In the apical third, the techniques showed similar filling ability.


Subject(s)
Root Canal Filling Materials , Dental Pulp Cavity/diagnostic imaging , Root Canal Obturation , Root Canal Preparation , X-Ray Microtomography , Gutta-Percha , Molar
9.
Dent. press endod ; 10(3): 49-55, Sept-Dec.2020. Tab, Ilus
Article in English | LILACS | ID: biblio-1344785

ABSTRACT

Objetivo: O presente estudo usou micro-CT para avaliar a quantidade de material obturador remanescente em canais radiculares curvos que tinham sido obturados com cimento Endosequence BC/Cpoint ou com cimento AH/ guta-percha, depois do retratamento utilizando instrumentos rotatórios ou reciprocantes. Métodos: Sessenta canais mesiovestibulares de molares superiores foram instrumentados até MTwo #35.04. As amostras foram randomicamente alocadas em quatro grupos (n=15): os canais do G1 e G2 foram obturados com AH/guta-percha, e os canais do G3 e G4 foram obturados com BC/Cpoint. O material obturador foi removido usando instrumentos rotatórios ou reciprocantes ­ G1 e G3: R25 Reciproc + reinstrumentação com R40; e G2 e G4: Sistema ProTaper Universal Retratamento + reinstrumentação com MTwo 40.06. Micro-CTs foram usadas para medir a quantidade de material obturador remanescente (mm3 ) para o canal inteiro e para cada terço, em dois momentos: 1) após a remoção do material obturador; e 2) após a reinstrumentação. Resultados: Após a remoção do material obturador, BC/CPoint permaneceu mais dentro do canal do que AH/guta-percha quando o canal inteiro (29,92% x 19,25%, p=0,0290) e o terço apical foram analisados. Após a reinstrumentação, BC/CPoint permaneceu mais do que AH/guta-percha somente no terço apical. Protocolos de tratamento com instrumentos rotatórios ou reciprocantes removeram material obturador sem diferença para AH/guta-percha (G1 e G2: p> 0,05) e BC/CPoint (G3 e G4: p> 0,05). Conclusões: BC/Cpoint é mais difícil de ser removido de canais radiculares curvos do que AH/guta-percha. Instrumentos rotatórios e reciprocantes têm habilidade similar na remoção de material obturador (AU).


Objective: This study used micro-CT to evaluate the amount of remaining filling material in curved root canals obturated with Endosequence BC Sealer/Cpoint or AH/gutta-percha after a rotary or reciprocating retreatment. Methods: Sixty mesiobuccal canals of maxillary molars were instrumented up to MTwo #35.04. Samples were randomly assigned to four groups (n=15): canals from G1 and G2 were filled with AH/gutta-percha, and canals from G3 and G4 were filled with BC/Cpoint. Filling material was removed using rotary or reciprocating instruments: G1 and G3: R25 Reciproc + re-shaping with R40; and G2 and G4: ProTaper Universal Retreatment system + re-shaping with MTwo 40.06. Micro-CT was used to measure the remaining amount of filling material (mm3 ), for the whole canal, and for each third, in two moments: 1) after filling removal and 2) after canal re-shaping. Results: After filling removal, BC/CPoint remained more into the canal than AH/Gutta-percha when the whole canal (29.92% x 19.25%, p = 0.0290) and the apical third were analyzed. After re-shaping, BC/CPoint remained more than AH/Gutta-percha only in the apical third. Rotary or reciprocating retreatment protocols removed filling material without difference for AH/gutta-percha (G1 and G2: p > 0.05) and BC/CPoint (G3 and G4: p > 0.05). Conclusion: BC/Cpoint is more difficult to be removed from curved root canals than AH/gutta-percha. Reciprocating and rotary instruments have similar ability to remove filling material (AU).


Subject(s)
Root Canal Filling Materials , Biofilms , Dental Instruments , X-Ray Microtomography , Lifting , Retreatment , Gutta-Percha , Molar
10.
Rev. Asoc. Odontol. Argent ; 108(3): 104-112, dic. 2020. ilus, tab
Article in Spanish | LILACS | ID: biblio-1147587

ABSTRACT

Objetivo: Evaluar ex vivo, mediante reconstrucción tridimensional con tomografía computarizada de haz cónico, la presencia de vacíos, el volumen y la adaptación de la obturación a las paredes de conductos con reabsorciones dentinarias internas simuladas empleando gutapercha inyectable o cono único de gutapercha más sellador biocerámico. Materiales y métodos: Se utilizaron 10 incisivos centrales superiores humanos extraídos, en cada uno de los cuales se talló una reabsorción artificial para su obturación. La muestra fue sometida, de manera sucesiva, a dos condiciones experimentales diferentes: grupo 1, gutapercha inyectable con sistema EQ-V Master; grupo 2, cono de gutapercha más sellador biocerámico BioRoot RCS. Luego, se realizaron tomografías computarizadas de haz cónico y se hizo el estudio tridimensional. A continuación, se utilizó un programa para identificar los vacíos en la obturación y analizar cuantitativamente el volumen y la superficie cubierta por la obturación en los tercios coronario, medio (ampolla) y apical. Los datos fueron evaluados con la prueba de Wilcoxon (P<0,05). Resultados: El volumen de obturación y la superficie dentinaria en contacto con la obturación fueron similares para las dos técnicas empleadas. Las diferencias entre ambos grupos no fueron estadísticamente significativas (P>0,05). Conclusión: Aunque se observaron vacíos con ambas técnicas (en contacto con la superficie dentinaria cuando se empleó gutapercha inyectable, y en el interior de la obturación cuando se usó cono único de gutapercha más sellador BioRoot RCS), las dos rellenaron adecuadamente las reabsorciones simuladas (AU)


Aim: Ex vivo, tridimensional evaluation with cone beam computed tomography (CBCT), of the presence of voids, the obturation volume and adaption to the root canal walls with simulated internal root resorption, using injected gutta-percha or bioceramic sealer with single gutta-percha cone. Materials and methods: Ten maxillary extracted central human incisors were used and artificial internal root resorption was created in each one. For the root canal obturation, each tooth was subjected to two different experimental conditions successively, conforming two matched groups: Group I: EQ-V Master injected thermo plasticized gutta-percha system. Group II: gutta- percha point plus BioRoot RCS bioceramic sealer. First, the root canals were filled with injected gutta-percha and then, with the bioceramic sealer. Then the teeth were scanned with CBCT and subsequently a digital three-dimensional reconstruction was performed. The presence of voids, obturation volumne and the dentin wall surface covered by the filling material was quantitative analyzed through a software; at the coronal, middle (blister) and apical thirds. The data was analyzed by using Wilcoxon test (P<0.05). Results: The filling material volume and the dentin wall surface covered by it, was similar in both root canal obturation techniques. There was no significant difference between both groups (P>0.05). Conclusion: Although voids were observed in both groups (when the injected thermo plasticized gutta-percha system was used the voids were at the external surface and when BioRoot RCS + gutta-percha cone was used the voids were into the filling material), the obturation of simulated root canal resorption cavities was similar with both obturation techniques (AU)


Subject(s)
Humans , Root Canal Filling Materials , Biocompatible Materials , Organically Modified Ceramics , Gutta-Percha , Root Resorption , Materials Testing , Statistical Analysis , Imaging, Three-Dimensional , Cone-Beam Computed Tomography
11.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 55-60, set./dez. 2020. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1121756

ABSTRACT

Para o sucesso no tratamento endodôntico é necessário a limpeza e modelagem dos condutos radiculares. Para isso, utilizam-se algumas técnicas de preparo dos canais com o intuito de remover o conteúdo patológico, visando sanar o canal radicular. Após um preparo cuidadoso e preciso, a obturação que acompanha a técnica escolhida deve apresentar um selamento adequado e preencher o sistema radicular com a finalidade de substituir o conteúdo natural ou patológico dos condutos por materiais inertes tolerados pelos tecidos periapicais. Com isso, o objetivo deste estudo in vitro foi avaliar por meio de radiografia digital, a qualidade de preenchimento de canais simulados retos quando os mesmos foram preparados manualmente e obturados utilizando condensação lateral e Mcsppaden e preparados com o sistema rotatório e obturados com a técnica de cone único. Para este estudo foram utilizados 20 blocos de canais radiculares simulados retos com comprimento de 21 mm. Estes blocos foram divididos em terços (cervical, médio e apical) em dois grupos que foram avaliados como ruim, bom e muito bom, onde foram obturados de duas formas diferentes, um grupo utilizando a técnica da condensação lateral mais emprego de Mcspadden e no outro grupo obturação com cone único após o preparo com o sistema mecanizado Protaper Universal. Os dados foram submetidos ao teste Qui-quadrado de Person e Teste Exato de Fisher com nível de significância de 95%. Os resultados obtidos apresentaram diferença significativas entre os terços obturados com as duas técnicas. Pode-se concluir, considerando a metodologia empregada e os resultados obtidos, que há diferença entre as duas técnicas obturadoras em relação a qualidade de preenchimento dos canais radiculares(AU)


Successful endodontic treatment requires cleaning and shaping of the root ducts. For this, some techniques of canal preparation are used in order to remove the pathological content, aiming to remedy the root canal. After careful and accurate preparation, the obturation accompanying the chosen technique must be properly sealed and fill the root system in order to replace the natural or pathological contents of the ducts with inert materials tolerated by the periapical tissues.Thus, the aim of this in vitro study was to evaluate by digital radiography the quality of filling of straight simulated channels when they were manually prepared and filled using lateral condensation and Mcsppaden and prepared with the rotary system and filled with the technique of single cone. For this study 20 blocks of simulated straight root canals with a length of 21 mm were used. These blocks were divided into thirds (cervical, middle and apical) into two groups that were evaluated as bad, good and very good, where they were filled in two different ways, one using the lateral condensation technique plus Mcspadden's and the other single cone obturation group after preparation with the Protaper Universal mechanized system. Data were submitted to Person Chi-square test and Fisher Exact Test with a significance level of 95%. The obtained results showed significant difference between the thirds filled with the two techniques. It can be concluded, considering the methodology employed and the results obtained, that there is a difference between the two obturator techniques in relation to the filling quality of the root canals(AU)


Subject(s)
Root Canal Filling Materials , Root Canal Obturation , Gutta-Percha , Periapical Tissue , Root Canal Irrigants , Root Canal Therapy , Root Canal Preparation
12.
Braz. dent. j ; 31(5): 499-504, Sept.-Oct. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1132336

ABSTRACT

Abstract This study evaluated by micro-computed tomography (μCT) the filling ability in curved root canals, besides the flow of AH Plus (AHP) and Neo MTA Plus (NMTAP) sealers using different methodologies. Mandibular molars mesial roots with two root canals and degree of curvature between 20° and 40° were selected. The specimens were prepared with the ProDesign R system up to size 35.05 and were filled with the sealers by a continuous wave of condensation technique, Thermo Pack II (n=12). The teeth were scanned using μCT after root canal preparation and obturation. The volumetric percentage of filling material and voids were calculated. Flow was evaluated based on ISO 6876/2012 (n=10). Flow and filling were also evaluated in μCT using a glass plate with a central cavity and four grooves from the central cavity (n=6). Flow was linearly calculated into the grooves. The central cavity filling (CCF) and lateral cavity filling (LCF) were calculated in mm³. Data were submitted to non-paired t test with a significance threshold at 5%. The percentage of filling and voids between the root canals filled with AHP or NMTAP was similar (p>0.05). NMTAP presented the lowest flow in conventional test (p<0.05). Using μCT, sealers had similar CCF, LCF and linear flow (p>0.05). In conclusion, NMTAP and AHP had similar filling ability in curved mesial root canals of mandibular molars without presence of isthmus. Although AHP presented better flow than NMTAP using ISO methodology, there was no difference between these materials regarding volumetric filling when evaluated by μCT.


Resumo Este estudo avaliou por microtomografia computadorizada (μCT) a capacidade de preenchimento de canais radiculares curvos, além do escoamento dos cimentos AH Plus (AHP) e Neo MTA Plus (NMTAP) utilizando diferentes metodologias. Foram selecionadas raízes mesiais de molares inferiores com dois canais radiculares e grau de curvatura entre 20° e 40°. As amostras foram preparadas com o sistema ProDesign R até o tamanho 35.05 e foram obturadas com os cimentos por uma técnica de onda contínua de condensação, Thermo Pack II (n=12). Os dentes foram escaneados usando μCT após o preparo e obturação do canal radicular. A porcentagem volumétrica de material de preenchimento e vazios foram calculados. O escoamento foi avaliado com base na norma ISO 6876/2012 (n=10). O escoamento e o preenchimento também foram avaliados em μCT usando uma placa de vidro com uma cavidade central e quatro canaletas a partir da cavidade central (n=6). O escoamento foi calculado linearmente nas canaletas. O preenchimento da cavidade central (PCC) e o preenchimento da cavidade lateral (PCL) foram calculados em mm³. Os dados foram submetidos ao teste t não pareado com nível de significância de 5%. A porcentagem de preenchimento e vazios entre os canais radiculares preenchidos com AHP ou NMTAP foi semelhante (p>0,05). NMTAP apresentou o menor escoamento no teste convencional (p<0,05). Utilizando μCT, os cimentos apresentaram PCC, PCL e escoamento linear semelhantes (p>0,05). Em conclusão, NMTAP e AHP apresentaram capacidade de preenchimento semelhante em canais mesiais curvos de molares inferiores sem presença de istmo. Embora o AHP tenha apresentado melhor escoamento que o NMTAP usando a metodologia ISO, não houve diferença entre esses materiais em relação ao preenchimento volumétrico quando avaliados por μCT.


Subject(s)
Root Canal Filling Materials , Dental Pulp Cavity/diagnostic imaging , Root Canal Obturation , Root Canal Preparation , X-Ray Microtomography , Gutta-Percha
13.
Rev. cient. odontol ; 8(2): e017, mayo-ago. 2020. tab
Article in Spanish | LIPECS, LILACS, LIPECS | ID: biblio-1119286

ABSTRACT

Objetivo: El objetivo de este estudio fue determinar la contaminación bacteriana de los conos de gutapercha de tipo beta (ß) en los tiempos 0, 24, 47 y 72 horas de las diferentes proveedurías de la Clínica Odontológica de la Universidad Científica del Sur (Lima, 2020). Materiales y métodos: Se obtuvo 16 conos de gutapercha tipo beta (ß) de empaques cerrados bajo medidas asépticas, los cuales fueron colocados en viales con 2 ml de caldo BHI y, posteriormente, fueron sembrados en agar BHI, así como en medios selectivos agar manitol salado y agar MacConkey. Pasadas las 24 horas de incubación a 37 °C, se realizó la lectura de las placas y el conteo de UFC. El mismo procedimiento se realizó para los tiempos 24, 48 y 72 horas, lo que dio un total de 64 conos de gutapercha tipo ß. Resultados: Se observó que el nivel de contaminación bacteriana fue el mismo tanto entre las distintas proveedurías como a las 0, 24, 48 y 72 horas. Solo se hallaron diferencias estadísticamente significativas (p = 0,044) entre los distintos tiempos de la proveeduría número 5. Finalmente, todas las muestras sometidas a la prueba de la coagulasa arrojaron resultados negativos. Conclusión: Los conos de gutapercha de tipo beta (ß) se contaminaron por igual producto de su almacenamiento y manipulación, independientemente de la proveeduría en la que permanecieron. (AU)


Objective: The purpose of this study was to determinate the bacterial contamination of Beta (ß) gutta-percha cones at 0, 24, 47 and 72 hours of the different supplies of the Universidad Científica del Sur, Lima 2020. Materials and Methods: 16 ß-type gutta-percha cones were obtained of sealed packages under aseptic measurements, they were placed in vials with 2ml BHI and subsequently planted in BHI agar plates as well as in selective medias as Salted mannitol agar and MacConkey agar after 24 hours of incubation at 37 ° the plates were read and count in CFU, the same procedure was performed for the other times evaluated 24, 48 and 72 hours, giving a total of 64 ß-type gutta-percha cones. Results: It was observed that the level of bacterial contamination was the same among the different supplies in all the establish times of in this study 0, 24, 48 and 72 hours. Therefore, there were no significant differences in the level of bacterial contamination between the supplies. On the other hand, only statistically significant differences (p = 0.044) were found between the different times of the supply number 5. Finally, all the samples submitted to the coagulase test had a negative result. Conclusion: The gutta-percha cones of type ß were contaminated equally regardless of the supply in which they were stored or manipulated. (AU)


Subject(s)
Humans , Gram-Positive Bacterial Infections , Gram-Negative Bacterial Infections , Coagulase , Dental Plaque/microbiology , Gutta-Percha
14.
Rev. ADM ; 77(4): 185-190, jul.-ago. 2020. ilus, tab
Article in Spanish | LILACS | ID: biblio-1129479

ABSTRACT

En la terapia endodóncica uno de los principales objetivos es eliminar y prevenir la infección o reinfección del sistema de conductos radiculares y/o los tejidos perirradiculares. Los materiales de obturación utilizados podrían introducir microorganismos a este sistema previamente desinfectado e impedir el éxito del tratamiento. Diversos estudios han demostrado que los conos de gutapercha pueden estar contaminados al ser tomados directamente del empaque, aún sellado y recién abierto. Objetivo: Comparación del grado de desinfección de tres marcas diferentes de puntas de gutapercha. Material y métodos: Es un estudio experimental, comparativo, observacional y de corte transversal. En el cual se analizarán tres marcas diferentes de gutaperchas #35 (Maillefer, Hygienic y Meta-Biomed) para saber qué desinfección hay con el hipoclorito de sodio (NaOCl) al 5.25%. Se llevó a cabo el análisis descriptivo para determinar medidas de tendencia central y medidas de dispersión mediante la prueba estadística de ANOVA p ≤ 0.05. Conclusión: De acuerdo con los resultados de nuestro estudio no se encontró diferencia significativa sobre la marca de gutapercha y el grado de descontaminación después de un minuto de ser sumergidas en hipoclorito de sodio al 5.25% (AU)


In endodontic therapy one of the main objectives is to eliminate and prevent infection or reinfection of the root canal system and/or periradicular tissues. The sealing materials used could introduce microorganisms to this previously disinfected system and impede the success of the treatment. Several studies have shown that gutta-percha cones can be contaminated by being taken directly from the package, still sealed and newly opened. Objective: Comparison of the degree of disinfection of 3 different brands of gutta-percha points. Material and methods: It is an experimental, comparative, observational and cross-sectional study. Where 3 different brands of gutta percha # 35 (Maillefer, Hygienic and Meta-Biomed) will be analyzed to know what disinfection there is with sodium hypochlorite (NaOCl) at 5.25%. The descriptive analysis was carried out to determine measures of central tendency and measures of dispersion through the statistical test of ANOVA p ≤ 0.05. Conclusion: According to the results of our study there is no significant difference on the gutta-percha brand and its decontamination at the moment of being submerged in 5.25% sodium hypochlorite (AU)


Subject(s)
Sodium Hypochlorite , Disinfection , Dental Pulp Cavity/drug effects , Gutta-Percha , Cross-Sectional Studies , Statistical Analysis , Analysis of Variance , Hypochlorous Acid
15.
Rev. Eugenio Espejo ; 14(1): 1-7, 20200615.
Article in Spanish | LILACS | ID: biblio-1116633

ABSTRACT

Se realizó una investigación analítica realizada in vitro en el laboratorio general del Hospital "Carlos Andrade Marín". La población estuvo compuesta por 20 barras de gutapercha marca Meta®Biomed (Korea), distribuidas en cuatro grupos compuestos por 5 barras atendiendo a características preestablecidas en cuanto a realización de termoplastificación y manipulación. Solo el 15% de las muestras se registró indicios de crecimiento bacteriano, de las que el 66,67% pertenecieron al grupo de barras sólidas de gutapercha que fueron manipuladas, estableciéndose diferencias significativas con respecto al resto de los grupos (p≤0.01), según la prueba de T-stu-dents. La mayoría de las muestras no mostró indicios de crecimiento bacteriano. Sin embargo, dos de las tres muestras que manifestaron esa actividad microbiológica pertenecieron al grupo de las barras sólidas de gutapercha que fueron manipuladas.


An in vitro analytical research was carried out in the general laboratory of the "Carlos Andrade Marín" Hospital. The population consisted of 20 bars of Meta®Biomed brand gutta-percha (Korea) distributed in four groups made up of 5 bars according to the pre-established characteristics in terms of thermoplasticization and handling. Only 15% of the selected samples showed signs of bacterial growth, of which 66.67% belonged to the group of solid gutta-percha bars that were manipulated, establishing specific differences with respect to the rest of the groups (p≤0.01), according to the T-students test. Most of the samples have no evidence of bacterial growth. However, two of the three samples that showed this microbiological activity belonged to the group of solid gutta-percha bars that were manipulated


Subject(s)
Humans , Male , Female , Bacterial Growth , Infection Control, Dental , Gutta-Percha , In Vitro Techniques , Hospitals
16.
Dental press j. orthod. (Impr.) ; 25(3): 20-29, May-June 2020. graf
Article in English | LILACS, BBO | ID: biblio-1133668

ABSTRACT

ABSTRACT Endodontically treated teeth may be moved, as endodontic treatment is not a contraindication for orthodontic treatment. Apical periodontal repair begins when the periapical or pulp lesion has completely resolved. This may happen immediately after treatment if the filling material causes little or no irritation of periapical tissues, and particularly if the material is fully contained within the canal. When it leaks, a foreign body granuloma forms and persists for some months or indefinitely, depending on the composition of the filling material. Materials containing calcium hydroxide with no resin components undergo phagocytosis and disappear in some months, as macrophages gradually remove them. Materials containing resins, silicone, ionomers, zinc oxide-eugenol, bioceramics or gutta-percha remain in the site and induce the formation of foreign body granulomas. Although this does not preclude tooth movement, patients should be followed up every three months using periapical images to control the position of the material in relation to the tooth apex. "Pseudo" overfilling may be avoided if permanent filling is delayed until the time when orthodontic treatment is completed.


RESUMO Os dentes tratados endodonticamente podem ser movimentados, e não representam contraindicação para o tratamento ortodôntico. O reparo periodontal apical se inicia a partir do momento em que a causa da lesão pulpar e/ou periapical é eliminada. Isso ocorre de maneira imediata se o material obturador for pouco ou nada agressivo aos tecidos periapicais, especialmente se estiver limitado ao canal. Quando extravasado, haverá a formação de granuloma do tipo corpo estranho por alguns meses ou permanentemente, dependendo da composição do material obturador. Os materiais à base de hidróxido de cálcio sem componentes resinosos são fagocitáveis e, em alguns meses, desaparecem do local, pois os macrófagos irão gradativamente removê-los. Os materiais à base de resina, silicone, ionômero, óxido de zinco e eugenol, biocerâmicos e guta-percha permanecerão no local, induzindo granulomas periapicais do tipo corpo estranho, o que não inviabiliza a movimentação dentária, mas devem ser acompanhados a cada três meses com imagens periapicais, para um controle de sua relação espacial com o ápice dentário. A "pseudossobreobturação" pode ser evitada se a obturação definitiva for postergada para quando o tratamento ortodôntico terminar.


Subject(s)
Humans , Orthodontics , Endodontics , Zinc Oxide-Eugenol Cement , Calcium Hydroxide , Clinical Decision-Making , Gutta-Percha
17.
Rev. Odontol. Araçatuba (Impr.) ; 41(1): 15-18, jan.-abr. 2020.
Article in Portuguese | LILACS, BBO | ID: biblio-1102356

ABSTRACT

O objetivo deste estudo foi avaliar a capacidade de remoção do material obturador de canais radiculares simulados retos através da radiografia digital, comparando a técnica manual com o uso de solvente, técnica manual com o uso da broca largo e o sistema ProTaper. Para este estudo foram utilizados 15 canais radiculares retos simulados já obturados e divididos em três grupos que foram analisados através do sensor programa VistaScan Mini Easy (Durr, Biertigheim- Bissingen, Germany). Os dados foram submetidos ao teste qui-quadrado com nível de significância de 95%. O terço apical mostrou melhores resultados com o sistema ProTaper (G3), o terço médio teve melhores resultados com o (G2) e (G3) sistema manual com uso de solvente e uso de broca largo e o sistema ProTaper. O terço cervical não mostrou diferença estatística entre os três grupos testados. Conclui-se que os desobturadores de modo geral não apresentaram grandes variações, sendo que após as análises nenhum dos três grupos de estudo foram capazes de remover completamente o material obturador presente no conduto radicular(AU)


The aim of this study was to evaluate the removal capability of the obturator material from straight simulated root canals by comparing the manual technique associated with solvent, the manual technique with the usage of wide drill No. 2 associated with solvent and, the ProTaper retreatment system. For this study we used 15 already filled simulated straight root canals and divided them into three groups that were analyzed by digital radiography. Data were submitted to Pearson's Chi-square test with 95% of significance level. After the analysis, the results showed that the apical third presented better results of unblocking with the ProTaper (G3) system, the middle third showed better results between the G2 and G3 manual system with the usage of solvent, wide drill and the ProTaper system. The cervical third didn't show any significant statistically difference among the three tested groups. The conclusion was that the unblockers in general did not present great variations. And in this study none of the three groups were able to completely remove the obturator material present in the root canal(AU)


Subject(s)
Root Canal Filling Materials , Root Canal Preparation , Gutta-Percha
18.
Dent. press endod ; 10(1): 62-67, Jan-Apr2020. Ilus
Article in English | LILACS | ID: biblio-1344283

ABSTRACT

Alterações morfológicas podem influenciar adversamente o sucesso do tratamento endodôntico. O incisivo lateral superior caracteriza-se pela presença de um canal e uma única raiz. A interpretação cuidadosa das radiografias, associada a recursos de iluminação e ampliação, é de extrema importância para detecção de variações anatômicas. Objetivo: O objetivo do presente relato de caso foi descrever o retratamento endodôntico não usual de um incisivo lateral superior com duas raízes. Relato de caso: O microscópio operatório foi de fundamental importância para a realização do novo tratamento. Para remoção do material obturador, foram utilizados solvente, limas manuais e pontas de ultrassom, reinstrumentação com limas manuais tipo K de aço inoxidável e obturação com guta-percha e cimento Pulp Canal Sealer, por meio da técnica de termoplastificação. Conclusão: O prognóstico favorável foi confirmado após acompanhamento de 216 meses (AU).


Morphological changes in teeth may adversely affect the success of endodontic treatment. The upper lateral incisors are characterized by the presence of a canal and a single root. Several studies have reported variations in the number of roots and canals. A careful interpretation of radiographs under enhanced illumination and magnification is of extreme importance for detecting these anatomic variations. this report aimed to describe a clinical case of unusual endodontic retreatment of an upper lateral incisor with two roots. The operative microscopy played a fundamental role in accomplishing the new treatment. The procedure involved the use of solvents, manual files, and ultrasonic tips to remove the obturator, and instrumentation of root canals with stainless steel type K manual files. Root canals were obturated with gutta-percha and Pulp Canal Sealer cement using the thermoplastic technique. A favorable prognosis was confirmed after a follow-up of 216 months (AU).


Subject(s)
Humans , Female , Aged , Ultrasonics , Retreatment , Endodontics , Lifting , Gutta-Percha , Anatomy , Microscopy
19.
Braz. dent. j ; 31(1): 25-31, Jan.-Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1089263

ABSTRACT

Abstract The purpose of this study was to evaluate the presence of residues after post space preparation (PSP) and establish whether the apical displacement of the gutta-percha was affected by the moments and methods of PSP in teeth filled by the single-cone technique. The root canals of 20 bovine incisor teeth were instrumented with Reciproc and filled with single-cone and AH Plus. The specimens were divided into 4 groups according to the moment and method of PSP (n=5): immediate with drill, immediate with thermoplasticizer, delayed with drill and delayed with thermoplasticizer. Micro-CT scans were performed before and after the PSP for residues of the root canal filling (1) and analysis of apical displacement (2). Data were analyzed by using 2-way repeated measurement ANOVA (1) and 2-way ANOVA (2) followed by the Tukey's test (a=0.05). Significance effect on the residues percentage remaining for methods (p=0.044), for moments (p=0.006), for thirds repetition (p<0.001), and for interaction between methods and thirds (p<0.001), and moments and thirds (p=0.044). Significance effect on the apical displacement of root canal filing was detected for methods (p=0.008), however no difference was found between moments (p=0.617). In general, PSP using drill resulted in more homogeneous root canal preparation, mainly when made immediately. For all other combinations between methods and moments for PSP, the middle and apical thirds presented significant higher residues remaining. Thermo method performed in both moments and the drill method performed immediately had displacement in the apical direction, representing extrusion of the root filling material.


Resumo O objetivo deste estudo foi avaliar a presença de resíduos após o alívio do canal (AC) e verificar se o deslocamento apical da guta-percha foi afetado pelos momentos e métodos de AC em dentes obturados pela técnica do cone único. Os canais radiculares de 20 dentes incisivos bovinos foram instrumentados com Reciproc e obturados com cone único e AH Plus. As amostras foram divididas em 4 grupos de acordo com o momento e método de AC (n=5): broca imediato, termocompactador imediato, broca tardio e termocompactador tardio. Escaneamentos em micro-CT foram realizados antes e após o AC para análise dos resíduos da obturação (1) e do deslocamento apical (2). Os dados foram analisados empregando ANOVA em 2 fatores com medida repetida (1), ANOVA em dois fatores (2), seguidas do teste de Tukey (α=0,05). A porcentagem de resíduos remanescentes foi influenciada pelos métodos (p=0,044), momentos (p=0,006), pelo fator de repetição terços do canal (p<0,001), e pelas interações entre métodos e terços (p<0,001), e momentos e terços (p=0,044). Já para o deslocamento apical da obturação do canal radicular foi detectada influência significativa para os métodos (p=0,008), no entanto, nenhuma diferença foi encontrada entre os momentos (p=0,617). Em geral, AC usando brocas resultou em preparo mais homogêneo dos canais radiculares, principalmente quando realizado imediatamente após a obturação. Para todas as outras combinações entre métodos e momentos de AC, o terço médio e apical apresentaram significativamente maiores resíduos remanescentes. O método termo realizado nos dois momentos e o método broca de preparo realizado imediatamente resultaram em deslocamento na direção apical, representando a extrusão do material de obturação no canal radicular.


Subject(s)
Animals , Root Canal Filling Materials , Dental Pulp Cavity , Root Canal Obturation , Cattle , Root Canal Preparation , Retreatment , X-Ray Microtomography , Gutta-Percha
20.
Article in English | WPRIM | ID: wpr-811427

ABSTRACT

OBJECTIVES: The obturation quality of MTA, Biodentine, Total Fill BC root canal sealer (RCS), and warm gutta-percha (WGP) in teeth with simulated internal root resorption (IRR) was evaluated by using micro-computed tomography.MATERIALS AND METHODS: Standardized IRR cavities were created using 40 extracted maxillary central incisor teeth and randomly assigned into 4 groups (n = 10). IRR cavities were filled with MTA, Biodentine, Total Fill BC RCS (bulk-fill form) and WGP + Total Fill BC RCS. Percentage of voids between resorptive cavity walls and obturation material (external void), and inside the filling materials (internal voids) were measured.RESULTS: Total Fill BC sealer in the bulk-fill form presented significantly highest values of external and internal void percentages (p < 0.05). Biodentine showed a significantly lowest external void percentage (p < 0.05). WGP + Total Fill BC RCS presented significantly lower values of internal void percentages than all groups (p < 0.05), except Biodentine (p > 0.05).CONCLUSION: None of the filling materials were created void-free obturation in resorption cavities. Biodentine may favor its application in teeth with IRR over Angelus MTA and bulk-fill form of Total Fill BC.


Subject(s)
Calcium , Dental Pulp Cavity , Gutta-Percha , Incisor , Pemetrexed , Root Resorption , Tooth
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