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Los logros de los avances obtenidos en el manejo actual de la caries han dado la oportunidad a los odontólogos de detectar lesiones de caries en sus estadios incipientes. A pesar de la existencia de una gran variedad de materiales restauradores directos disponibles en el mercado actual y que pueden utilizarse para restaurar lesiones pequeñas de caries, el material que tiene más posibilidades de éxito para este tipo de lesiones es sin duda alguna el oro cohesivo, también conocido como oro directo (AU)

The goals obtained with the current management of dental caries has given the dentists the opportunity to detect incipient caries lesions in early stages. Although, the current existence of a great variety of direct restorative materials available in the market to restore small caries lesions, the material that may show better success for these type of lesions, is without any doubt: the gold foil or direct gold (AU)

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Se trata de paciente femenino de 22 años de edad, en quien se realizó una restauración en un molar siguiendo la filosofía de mínima intervención desde el diagnóstico hasta la obturación con un material bioactivo. Los objetivos del tratamiento fueron devolver la funcionalidad y estética de dicho molar, pero sobre todo brindar una protección a largo plazo mediante la liberación y recarga de iones de calcio, fosfato y flúor proporcionado por el material bioactivo (AU)

t is about a female patient of twenty-two years, in which a restoration was made in a molar following the philosophy of minimal intervention from diagnosis to filling with a bioactive material. The objectives of the treatment were to restore the functionality and aesthetics, but mainly to provide long-term protection through the release and recharge of calcium, phosphate and fluoride ions provided by the bioactive material used (AU)

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Objective: To describe a clinical case that called for an anatomical post to be made to support and retain an indirect restoration in the anterior tooth. Case report: A 72-year-old female patient came to the office complaining that the crown of tooth 22 had come loose. A clinical and radiographic examination of element 22 was performed, and showed a very broad root canal, total displacement of the cast metal crown-core set, and satisfactory endodontic treatment. The restorative planning for this patient included the making of an anatomical post from Exacto # 2 fiberglass post (Angelus, Brazil), and refilling it with Bulk One composite resin (3M, USA), using self-adhesive resin cement U200 (3M, USA). The reconstruction of the coronary portion of the post was also performed with the same composite resin (Bulk One 3M, USA). The preparation for full crown and temporary restoration was performed in the same session, using self-curing acrylic resin. The all-ceramic crown was molded and cemented in subsequent sessions. Conclusion: The use of anatomical posts with composite resin represents a technically viable alternative for rehabilitating endodontically treated teeth with wide root canals, in cases where conventional prefabricated fiber posts cannot be adapted easily. The advantages that stand out are that these posts can be applied easily, at low cost, and in a single session.

Objetivo: Descrever um caso clínico de confecção do pino anatômico para suporte e retenção de restauração indireta em dente anterior. Relato do Caso: Paciente feminina, 72 anos, compareceu ao consultório queixando-se que a coroa do dente 22 havia "soltado". Realizou-se exame clínico e radiográfico do elemento 22, que apresentou conduto radicular bastante amplo, deslocamento total do conjunto núcleo/coroa e tratamento endodôntico satisfatório. O planejamento restaurador para essa paciente incluiu a confecção de pino anatômico, com pino de fibra de vidro Exato #2(Angelus, Brasil) reembasado com resina composta Bulk One (3M, EUA), utilizando o cimento resinoso autoadesivo U200 (3M, EUA). Foi realizada a reconstrução da porção coronária do pino também com resina composta do tipo Bulk. Realizou-se, na mesma sessão de atendimento, o preparo para coroa total e restauração provisória utilizando dente de estoque e resinaacrílica autopolimerizável. Em sessões seguintes foi realizada a moldagem e cimentação da coroa total em cerâmica pura. Conclusão: A utilização de pinos anatômicos com resina composta representa uma alternativa tecnicamente viável, de fácil aplicabilidade, com baixo custo e em única sessão, para reabilitação de dentes tratados endodonticamente com conduto radicular onde os pinos em fibra pré-fabricados convencionais não apresentam boa adaptação.

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ABSTRACT: CAD/CAM blocks are widely used in dental restorations around the world. This study aimed to investigate the effects of different polishing and finishing systems on surface roughness and color change of resin-based CAD/CAM blocks. In this study, material samples of 2×7×12mm were prepared. In three different experimental groups, surface polishing was carried out with one-step, two-step and multi-step polishing systems. The samples in one subgroup of each experimental group were polished with the diamond paste. Once the initial roughness and color values of the samples were measured using a profilometer and a spectrophotometer, the samples were immersed in coffee. Surface roughness and color change (ΔE00) results were statistically analyzed using two-way variance analysis (ANOVA). Finishing and polishing systems created significantly different levels of surface roughness on the hybrid ceramic block (Vita Enamic) but not on the composites block (Brilliant Crios, Grandio Blocs). While the two-step and multi-step finishing and polishing systems produced the lowest color change on hybrid ceramic blocks, one-step and two-step systems achieved this on composite blocks (p<0.05). In all test groups, the supplementary polishing performed after regular polishing procedures helped us reduce the surface roughness and color change on CAD/CAM blocks. The findings obtained in this study suggest that one and two-step polishing systems are more suitable for resin-based composite CAD/CAM blocks; for hybrid ceramic CAD/CAM blocks, on the other hand, two and multi-step finishing and polishing systems seem to be more efficient concerning lower surface roughness and resistance to color changes.

RESUMEN: Los bloques CAD/CAM son ampliamente utilizados en las restauraciones dentales, alrededor del mundo. El objetivo de este estudio es investigar los efectos de diferentes sistemas de pulido y acabado sobre la rugosidad de la superficie y el cambio de color de los bloques CAD/CAM de resina. En este estudio se prepararon muestras de material de 2×7×12mm. El pulido de la superficie se llevó a cabo en tres grupos experimentales con sistemas de pulido de un paso, de dos pasos y de varios pasos. Las muestras de un subgrupo de cada grupo experimental se pulieron con la pasta de diamante. Una vez medidos los valores iniciales de rugosidad y color de las muestras mediante un perfilómetro y un espectrofotómetro, las muestras se sumergieron en café. Los resultados de la rugosidad superficial y el cambio de color (ΔE00) se analizaron estadísticamente mediante un análisis de varianza de dos vías (ANOVA). Los sistemas de acabado y pulido crearon niveles de rugosidad superficial significativamente diferentes en el bloque cerámica híbrida (Vita Enamic) pero no en el bloque de composites (Brilliant Crios, Grandio Blocs). Mientras que los sistemas de acabado y pulido de dos y varios pasos produjeron el menor cambio de color en los bloques de cerámica híbrida, los sistemas de un paso y dos pasos lo consiguieron en los bloques de composite (p<0,05). En todos los grupos de prueba, el pulido suplementario realizado después de los procedimientos de pulido regulares nos ayudó a reducir la rugosidad de la superficie y el cambio de color en los bloques CAD/CAM. Los hallazgos obtenidos en este estudio sugieren que los sistemas de pulido de uno y dos pasos son más adecuados para los bloques CAD/CAM de resina; en cambio, para los bloques CAD/CAM de cerámica híbrida, los sistemas de acabado y pulido de dos y varios pasos parecen ser más eficientes en lo que respecta a la menor rugosidad de la superficie y la resistencia a los cambios de color.

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The aim of this study was to evaluate the accuracy of cone-beam CT (CBCT) for the detection of artificially created vertical root fractures (VRF) in extracted teeth restored with metallic (MP) and fiberglass (FGP) posts. After root canal obturation, 60 extracted human premolars were scanned by using the highest-resolution settings of a CBCT unit. Theprepared roots were randomly divided into three groups: group C (control group): non-restored and non-endodontically treated teeth (n = 20); group MP (n = 20); group FGP (n = 20). In all groups, 10 teeth were artificially fractured. Two external and independent observers blindly recorded the presence or absence of VRF. Sensitivity, specificity, accuracy, intra-and interobserver agreement were calculated. Kappa value for inter-and intraobserver agreement was 0.82 and 0.84 respectively, demonstrating goodagreement. The highest values for sensitivity (0.80 -0.90), specificity (1.00) and accuracy (0.90 -0.95) were found in the control group. The teeth with FGP restoration presented the lowest sensitivity (0.30 -0.50) and accuracy (0.60 -0.65) values. Both examiners had a good performance in the diagnosis of fractures in teeth with MP, with accuracy ranging between 0.85 -0.90. The presence of MP did not influence accuracy; however, the presence of FGP reduced the diagnostic capacity of CBCT.

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A pesar de los avances e innovaciones de los materiales dentales, la microfiltración marginal y la contracción durante la polimerización continúan siendo una de las causas principales del fracaso de los tratamientos en odontología restauradora. Un sellado marginal correcto será posible cuando las fuerzas de adhesión superen las fuerzas generadas por la contracción de polimerización y las fuerzas generadas por los cambios dimensionales térmicos posteriores a la polimerización, por lo que investigaciones previas demostraron que estas limitaciones pueden ser superadas con el uso de resinas Bulk Fill como material de relleno de cavidades extensas y profundas de dientes posteriores. Estas resinas. de relleno masivo, están recibiendo atención, principalmente porque se pueden colocar, a diferencia de las resinas convencionales, en incrementos de 4 mm sin afectar la contracción de la polimerización, la adaptación de la cavidad o el grado de conversión. El objetivo de la presente revisión bibliográfica es describir la contracción de polimerización y la consecuente filtración marginal que sufren las resinas compuestas para el sector posterior Bulk Fill con base de datos de la literatura (AU)

Despite advances and innovations in dental materials, marginal microfiltration and shrinkage during polymerization continue to be one of the main causes of treatment failure in Restorative Dentistry. A correct marginal seal will be possible when the adhesion forces exceed the forces generated by polymerization contraction and the forces generated by post-polymerization thermal dimensional changes, for which previous research has shown that these limitations can be overcome with the use of Bulk Fill resins as filling material for large and deep posterior tooth cavities, these massive filling resins are receiving attention mainly because they can be placed, unlike conventional resins, in 4 mm increments without affecting polymerization shrinkage. , cavity adaptation or degree of conversion. The objective of the present bibliographic review is to describe the polymerization contraction and consequent marginal filtration suffered by Composite Resins for the Bulk Fill posterior sector with a literature database (AU)

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Contemporary dentistry literally cannot be performed without use of resin-based restorative materials. With the success of bonding resin materials to tooth structures, an even wider scope of clinical applications has arisen for these lines of products. Understanding of the basic events occurring in any dental polymerization mechanism, regardless of the mode of activating the process, will allow clinicians to both better appreciate the tremendous improvements that have been made over the years, and will also provide valuable information on differences among strategies manufacturers use to optimize product performance, as well as factors under the control of the clinician, whereby they can influence the long-term outcome of their restorative procedures.

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Abstract Contemporary dentistry literally cannot be performed without use of resin-based restorative materials. With the success of bonding resin materials to tooth structures, an even wider scope of clinical applications has arisen for these lines of products. Understanding of the basic events occurring in any dental polymerization mechanism, regardless of the mode of activating the process, will allow clinicians to both better appreciate the tremendous improvements that have been made over the years, and will also provide valuable information on differences among strategies manufacturers use to optimize product performance, as well as factors under the control of the clinician, whereby they can influence the long-term outcome of their restorative procedures.

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The aim of this study was to compare the clinical performance of root caries restorations after a six-month period using two methods, a conventional technique with rotary instruments and an atraumatic restorative technique (ART), in an institutionalized elderly population in the city of Bogotá, Colombia. Root caries represents a multifactorial, progressive, chronic lesion with softened, irregular and darkened tissue involving the radicular surface; it is highly prevalent in the elderly, especially in those who are physically or cognitively impaired. A quasi-experimental, double-blind, longitudinal study was carried out after cluster randomization of the sample. Two different experienced dentists, previously trained, performed the restorations using each technique. After six months, two new investigators performed a blind evaluation of the condition of the restorations. The results showed a significantly higher rate of success (92.9%) using the conventional technique (p < 0.03). However, we concluded that ART may have been the preferred technique in the study population because 81% of those restorations survived or were successful during the observation period.

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AIM: To evaluate the push-out bond strength (BS) of direct anatomic posts (DAPs) and conventional fiber posts (CFPs) cemented with different luting agents in different thirds of flared root canals. MATERIALS AND METHODS: A total of 60 human single-rooted canine teeth were transversally sectioned 16 mm from the radicular apex. After endodontic treatment, canals were flared with diamond burs. Samples were divided into six groups according to post type and luting agent: DAP and RelyX U100 (RXU); DAP and RelyX ARC (RXA); DAP and RelyX Luting 2 (RXL); CFP and RXU; CFP and RXA; CFP and RXL. Roots were sectioned transversely into six 1-mm-thick slices. The push-out test was performed and failure modes were observed. RESULTS: The DAP groups (7.23 ± 2.05) showed highest BS values (p < 0.05) when compared with CFP (5.93 ± 1.76). RelyX U100 (8.17 ± 1.70) showed higher BS values (p < 0.05) than RXA (6.46 ± 1.38), and RXL (5.10 ± 1.65) showed the lowest values. Bond strength on the apical third was statistically lower (p < 0.05) than that on the other thirds of the root canals. There was a predominance of adhesive failure for all groups. CONCLUSION: The DAPs improved retention in flared root canals, and RXU was the most effective luting agent. The apical third showed the lowest BS values. CLINICAL SIGNIFICANCE: The relining procedure of fiber posts with composite and the proper selection of luting resin cement are important for increasing bonding effectiveness in flared root canals.

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