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Objetivos: Evaluar características superficiales y estabilidad del color de compuestos de resina reforzados con circonio, producidos mediante impresión 3D, sustractiva y estratificada. Métodos: Discos (N=36) (Ø=10×1.0mm) se prepararon según tres grupos: Impresión 3D (PriZma 3D Bio Crown, Makertech Labs), Sustractivo (Lava Ultimate, 3M) y Estratificado (Filtek Z350 XT, 3M). Propiedades superficiales se evaluaron utilizando análisis de rugosidad y microscopía electrónica de barrido. Coordenadas de color (L*, a*, b*) se registraron al inicio, después del teñido (café o vino tinto durante 12 días) y después del repulido (Superfix Disc System, TDV) usando un espectrofotómetro (SP60; EX-Rite). Análisis estadístico incluyó diferencias de color (∆E00) y en el parámetro de translucidez (∆TP00), considerando umbrales de aceptabilidad (UA) y perceptibilidad (UP). Resultados: Impresión 3D exhibió valores de Ra más altos que Sustractivo (p

Introducción: La abfracción es un tipo de lesión caracterizada por la pérdida patológica de tejido dental asociada a cargas biomecánicas que provocan la flexión y degradación, por fatiga química del esmalte y la dentina, fuera del punto de carga del diente. Objetivo: Describir los aspectos y consideraciones reportadas en la actualidad acerca del diagnóstico y tratamiento de las lesiones de abfracción. Métodos: Se realizó una búsqueda de literatura científica en 5 bases de datos utilizando los siguientes descriptores de búsqueda en inglés y español: abfracción, lesiones cervicales no cariosas, diagnóstico, manejo. Desarrollo: La abfracción se presenta como lesiones en forma de cuña, principalmente en dientes anteriores y premolares. El diagnóstico requiere una evaluación minuciosa de los factores predisponentes y características clínicas. El tratamiento busca restaurar la anatomía y función del diente, así como eliminar los factores causales. El principal desafío es lograr un sellado óptimo entre la restauración y el diente en el margen cervical, lo cual puede ser afectado por factores como la carga oclusal excéntrica, pérdida de retención, caries secundaria y decoloración. Es crucial adoptar medidas complementarias para eliminar los agentes causales y garantizar la longevidad de las restauraciones. Conclusiones: Un diagnóstico basado en un examen clínico y la identificación de factores etiológicos es fundamental para un correcto abordaje terapéutico. Es necesario fijar un plan de tratamiento que no solo permita devolver la anatomía, función y estética a un órgano dentario, sino eliminar el factor causante de esta afección.

Copyright of Salud, Ciencia y Tecnología is the property of Fundacion Salud, Ciencia y Tecnologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: The objective of the research carried out was to compare the depth cure of 3 composite resins using the ISO 4049 standard with 3 different lamp models. Materials and methods: Composite resin cylinders (15 for each experimental group) were made according to ISO 4049 with the following types of resins composites: Beautifil Bulk (BB) (Shofu Inc), Tetric N Ceram Bulk Fill (TC) (Ivoclar Vivadent), Filtek One Restaurador Bulk Fill (FO) (3M ESPE). The composite resins were photoactivated with LED curing lamps. (LED C monowave -- Woodpecker, X CURE poliwave - Woodpecker, I LED II poliwave - Woodpecker). Results: The results obtained were analyzed by the Anova test of two factors with a95% of confidence. This was contrasted with Scheffé's multiple comparisons test. The statistical analysis carried out concludes that the 3 Bulk Fill composite resins light-cured with the 3 models of lamps used in this study reached the values indicated by the manufacturers (greater than 4mm). Conclusions: There are significant differences between the lamps used. Being the LED C monowave and the I LED II the ones that obtained the highest values. [ABSTRACT FROM AUTHOR]

Introduction: the emerging manufacture technologies for dental restorations have brought new materials with them, such as 3D-printing resins and CAD/CAM discs for the manufacturing of denture bases. Currently, there is no rigorous mechanical characterization for these materials in the literature, apart from the ones reported in technical datasheets. Method: samples for mechanical characterization were manufactured with a conventional heat cure acrylic, a CAD/CAM polymethyl methacrylate (PMMA) disc and two 3D-printing resins. The samples were tested in a universal testing machine, according to ISO 20795-1 for flexural strength and elastic modulus. Compression strength was also determined under dry conditions. The average value of each property was calculated (n = 5). One-way ANOVA and Tukey’s multiple comparisons tests were used. Results: mean flexural strengths ranged from 78.35±2.99 to 87.48±4.47MPa, elastic moduli were between 2125.43±57.05 and 2277.72±58.46MPa, and compression strengths values ranged from 85.03±2.14 to 119.15±2.87MPa. Statistical analyses showed significant differences for flexural and compression strengths but did not show any difference for elastic moduli. Conclusions: all the tested materials met the minimum required specification for mechanical properties given by ISO 20795-1. From a mechanical point of view, the new materials for digital technologies, i.e., CAD/CAM disc and 3D-printing resins, are suitable for denture-base applications.

Resumen Objetivos: Evaluar los resultados biomecánicos, biológicos, técnicos y clínicos de la técnica del Sellado Dentinario Inmediato. Metodología: Una Revisión Crítica de la Literatura fue llevada a cabo, para discutir los resultados de estudios clínicos, de laboratorio y revisiones sistemáticas, a fin de responder la pregunta del título. Resultados: Los resultados clínicos, biomecánicos y biológicos fueron variados, pero a mediano y largo plazo no mostraron diferencias significativas entre el Sellado Dentinario Inmediato y el Sellado Dentinario Diferido. Por otra parte, la técnica es más compleja e insume más tiempo clínico. Discusión: De acuerdo con la evaluación de los resultados mencionados, el Sellado Dentinario Inmediato no tuvo los niveles de eficacia y eficiencia esperados. Conclusiones: Hasta el momento, el Sellado Dentinario Inmediato justificaría su aplicación en situaciones específicas y no como procedimiento de rutina en la realización de restauraciones indirectas adheridas.

An ideal restorative material would be able to adhere to the remaining dental tissue and reproduce natural characteristics of the tooth such as translucency, color, and hardness. The dental market offers restorative materials such as Composite Resins, Bulk Fill, Glass Ionomer and Cention-N. These provide several advantages in the aesthetic field, however, it remains a challenge to avoid the bleaching effects that certain commonly used pigmenting drinks can cause. Therefore, the purpose of this review was to describe the effects produced by pigmenting beverages such as tea, coffee, and coca cola, on the color stability of some restorative materials for the posterior sector, in order to determine which of them is the best aesthetic option to rehabilitate this sector. For this, a bibliographic search was carried out, subject to the last 5 years (2017 -- 2021), in databases such as Pubmed, ResearchGate, Web of science, ScienceDirect, Scielo, EBSCO, Semantic Scholar and Medigraphyc, using as descriptors the words Cention-N, alkasite, composite resin, glass ionomer, bulk-fill resin, color stability, physical properties, beverages, coffee, tea, coca cola, combined with Boolean operators AND and OR. A total of 133 published articles were obtained, of which 17 were selected for providing information relevant to the purpose of this review. The results showed that changes in color stability, regardless of restorative material, appear after 7 days of immersion. According to the literature reviewed, tea is concluded to be the most pigmenting solution, followed by coffee and coca cola. On the other hand, Cention N is the material with the greatest potential for discoloration. [ABSTRACT FROM AUTHOR]

Background: Fractures of restorations in the mouth are inevitable. When this happens, the clinician should be able to repair them in a simple and reliable way. Purpose: To measure adhesion on a composite for Cad/Cam when it has been sandblasted or acid etched. Methods: 50 Brava Block sheets were divided into 5 groups of n= 10; and aged at 5000 thermal cycles. 100 resin cylinders of 3 mm diameter were cemented to the sheets. The groups: aluminum oxide (AL10) and aluminum oxide with silane (ALS 10) were sandblasted and the hydrofluoric acid (HF10) and hydrofluoric acid with silane (HFS10) groups were etched. The AHS group (aluminum oxide plus hydrofluoric acid with silane) was sandblasted, and acid etched. The cylinders were cemented with resin cement. All groups were sheared in a universal testing machine. Adhesion failures were analyzed under a 40X microscope. All the statistics were worked with an α= 0.05. Results: The groups had similar adhesion strengths. As they aged, their values decreased to 11.15 and 8.15 MPa, on average. The failures were: Adhesives 12 %; Cohesive 68 % and mixed 20 %, higher cohesive and mixed prevalence in sandblasted groups with ruptures of 80-90 %. Conclusions: Both treatments produce similar FA between a Cad/Cam composite and a resinous cement. However, the sandblasted groups suffered a higher percentage of material fractures. [ABSTRACT FROM AUTHOR]

Background: Preheating resins has been shown to improve physical properties such as surface microhardness. Some lowcost composite resins have not been well studied and preheating could improve their properties. Objective: to evaluate if preheating increases the surface microhardness of 6 composite resins and if the microhardness of the preheated low-cost ones equals that of the other resins Method: In this In vitro experimental investigation, 6 resins were used, EnaHri®UE2 and UD2 (Micerium, Genoa Italy) as control, Z350™ and Z250™ (3M ESPE, Minnesota United States) conventionally used composites and LUNA ® and ROK ® (SDI, Victoria Australia) as low-cost resins. Specimens without preheating (sp) and preheating at 39℃ (p) were created for each resin. It was polymerized according to the manufacturers' instructions. Three measurements were made per sample using a microhardness tester applying a 300 g load for 10 seconds. Results: Resinenamel microhardness: LUNA ® sp 69.93 HV (95 % CI 62.02-77.85), Z350™ sp 89.9 HV (95 % CI 80.56-99.23), LUNA ®p 70.05 HV (95 % CI 62.97-77.12), Z350™ p 87.47 HV (CI 95 % 78.71-96.23). The microhardness of resins-dentin: ROK ® sp 85.16 HV (95 % CI 69.91-100.4), Z250™ sp 95.99 HV (95 % CI 74.8-117.2), ROK ® p 92.19 HV (95 % CI 80.83-103.6), Z250™ p 104.7 HV (95 % CI 97.76-111.6). Preheating did not significantly increase microhardness except for control resins. ROK ® sp is equivalent to Z250™ sp (p 0.2825). Conclusion: Preheating does not increase the surface microhardness of the composite resins analyzed. The microhardness of ROK ® sp resin is equivalent to Z350™ sp. [ABSTRACT FROM AUTHOR]

Introducción: Las diferencias en las propiedades mecánicas de los materiales cerámicos y a base de resina plantean la interrogante sobre cuál puede tener un mejor desempeño a largo plazo. Objetivo/s: Evaluar la resistencia flexural y estabilidad de color de diferentes materiales restauradores estéticos indirectos. Material y Métodos: Los materiales seleccionados fueron FiltekTM Z250XT (3M ESPE), Ceramage (SHOFU Dental),VITA VM® LC y VITA ENAMIC® (VITA Zahnfabrik), IPS e.max® (Ivoclar-Vivadent) y Zolid FX(Amann Girrbach AG). El ensayo de resistencia flexural (n = 10) fue realizado en una máquina universal de ensayos mecánicos. Las lecturas de color (n = 5) se midieron en un espec- trofotómetro VITA Easyshade V®. Resultados: Los materiales totalmente cerámicos mostraron un mejor desempeño mecánico (p< 0,001). Los resultados de estabilidad de color muestran que Ceramage, IPS e.max® y Zolid FX, mostraron una diferencia estadístidicamente significativa (p ≤ 0,002) con Flitek Z250 XT, VITA VM® LC y ENAMIC®. Discusión-Conclusiones: Los materiales totalmente cerámicos presentaron una mayor resistencia flexural y estabilidad de color que los materiales de base polimérica. A pesar de ello, los materiales estéticos indirectos con polímeros en su composición, como Ceramage, se presentan como una alternativa válida,ya que además de tener propiedades mecánicas adecuadas, poseen una estabilidad de color semejante a los materiales cerámicos.

Copyright of Cadernos de Saude Publica is the property of Escola Nacional de Saude Publica Sergio Arouca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

La presente revisión tiene por objetivo comparar las ventajas que otorgan los giomeros en Odontopediatría frente a otros cementos dentales. Se realizó una revisión narrativa en las bases de datos SciELO y en los buscadores bibliográficos PubMed y Google Schoolar, hasta el 2019. De los 43 artículos se excluyeron ocho ya que no presentaban información con resultados relevantes, quedando así un total de 35 artículos para nuestra investigación. Se obtuvieron resultados comparativos, en cuanto a la recarga o liberación de flúor, fuerza de cizallamiento, estabilidad de color y comportamiento clínico en la superficie dentaria; encontrándose que el giomero es un material liberador de flúor por excelencia, así como por su adhesión a la dentina cumpliendo con la aceptación y directrices de la dentina y esmalte del programa de Materiales Adhesivos establecidos por la Asociación Dental Americana.

Objetivo. Comparar la profundidad de polimerización de tres resinas compuestas bulk fill obtenida con dos unidades de fotoactivación LED (polywave versus monowave). Métodos. Con las resinas compuestas bulk fill: Filtek One Bulk Fill Restorative (FO) (3M ESPE), Tetric N-Ceram Bulk Fill (TNC) (Ivoclar Vivadent) y Opus Bulk Fill APS (OP) (FGM), fueron confeccionados cuerpos de prueba (n = 5) de formato cilíndrico (4 mm diámetro y 10 mm altura) para la evaluación de la profundidad de polimerización según la norma ISO 4049. Fueron empleadas dos unidades de fotoactivación LED de diferentes tecnologías: Bluephase N (Tecnología Polywave - Ivoclar Vivadent) y LED D (Tecnología Monowave - Woodpecker) con densidad de energía de 24 J/cm2. Los datos fueron analizados por medio del análisis de la varianza de dos factores y la prueba post hoc de Tukey (α = 5%). Resultados. LED D produjo mayores valores de profundidad de polimerización en todas las resinas compuestas bulk fill evaluadas (p < 0,05). Los valores obtenidos con Bluephase N fueron: 3,87 (TNC) > 3,74 (FO) > 3,31 (OP) y con LED D fueron 4,29 (TNC) > 4,11 (FO) > 3,92 (OP). Conclusiones. La unidad de fotoactivación LED de tecnología monowave produjo mayor profundidad de polimerización que la de tecnología polywave, independientemente de la resina compuesta bulk fill utilizada. Las resinas compuestas tuvieron diferentes valores de profundidad de polimerización.

Background: The constant need to improve adhesive systems leads manufacturers to develop new materials that offer optimal results. Manufacturers claim that new adhesives produce a strong and durable bond between resin cements and restorative materials including metals. Purpose: To measure the adhesive resistance between a resin cement and a nickel-chromium (Ni-Cr) alloy at 24 hours and after aging. Methods: This was an in vitro experimental study. 40 Ni-Cr metallic cylinders were assigned to 4 groups (n=10). The surfaces were mechanically sanded and abraded with 50 µm Al2O3 particles (mechanical surface treatment). The chemical surface treatment included a metallic primer, silane, and universal adhesive. Subsequently, two cubes of nanohybrid resin were cemented to each metal cylinder with resin cement, under a constant load of 0.98 N for 5 minutes. An immediate shear test (24 hours) and after aging (5,000 thermal cycles) was carried out. Results: The highest values of adhesive resistance were obtained with the GSUNIVERSAL group both when it was measured immediately and when aged. Conclusions: The mechanical and chemical treatment based on 10-MDP plus silane improved the adhesion between a Ni-Cr alloy and a resin cement, even after aging. [ABSTRACT FROM AUTHOR]

The present review aims to determine the characteristics of flexible prostheses and their prosthetic alternatives, for this, the PubMed, SciELO and Scholar google databases were used and the following keywords were used: flexible prosthesis, "valplast" and nylon prosthesis. A total of 30 articles were collected in English, Spanish and Portuguese languages. It was determined that flexible type removable prostheses (nylon) are characterized by their elasticity and ease of adopting colors, improving their aesthetics, unfortunately the material that makes them up does not seem to meet all the desired properties in the long term. Its use can be implemented as long as it is temporarily. [ABSTRACT FROM AUTHOR]

Copyright of Revista Estomatología is the property of Universidad del Valle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Las restauraciones dentales con técnica indirecta fueron concebidas con el propósito de optimizar las propiedades mecánicas, físicas y químicas de los materiales polimerizados. En tal sentido se realizó una investigación con el objetivo de comparar restauraciones mediante la técnica indirecta utilizando resina híbrida (P60/3M) y un cerómero (Ceramage-Shofu), a través de la resistencia flexural y la estabilidad del color. Se realizó un estudio observacional comparativo en 30 muestras estructuradas en forma de bloques, distribuidas en 2 grupos, ambos con 15 piezas, en el primero (G1) se utilizó resina Filtek P60/3M; mientras que, en el segundo (G2) se empleó cerómero marca Ceramage-Shofu. el 80,00% de las piezas del grupo 1 evolucionó de A1 a B1; sin embargo, en el grupo 2 (piezas de resina), la transformación resultó desfavorable, más del 50% alcanzó una categoría imprecisa entre los valores B3 y B4. A través de la prueba U Mann Whitney se determinó la existencia de una diferencia significativa entre ambos grupos, así como entre los estados inicial y final del color de las piezas en ambos grupos (p

Objetivo: Comparar los cambios en la posición de los dientes artificiales en las prótesis totales maxilares al momento del prensado, mediante la medición en puntos de referencia pre determinados, bajo una fuerza de presión de 800, 1 000 y 1 250 kg, empleando yeso tipo III (Whip Mix, USA®) o silicona de condensación (Zhermack, Italia) como materiales de inclusión. Métodos: Fueron fabricadas 36 prótesis superiores obtenidas desde un modelo de yeso de un único paciente edéntulo total. Las réplicas fueron divididas de forma aleatoria en seis grupos, cada uno con seis repeticiones, considerando las variables involucradas, materiales y fuerza evaluada, tras el prensado y acrilizado. La diferencia entre los puntos referenciales fue establecida mediante Autocad (versión 21,2, Autodesk, España). Resultados: Se detectó una diferencia significativa entre la silicona y el yeso a 1 000 kg fuerza al 1% de nivel de significancia. Conclusiones: Existió mayor estabilidad en cuanto a movimiento cuando fue empleado como material de inclusión la silicona, con mejores resultados al emplear bajo 1 000 Kg fuerza de presión; independiente de la presión probada en todas las muestras existió movimiento en la posición original de los dientes artificiales.

Objetivo: El objetivo de este estudio fue medir el cambio dimensional de una silicona por condensación a través de diferentes instrumentos de medición (calibrador digital, estereomicroscopio y máquina de medición por coordenadas tridimensional) en cuatro diferentes tiempos. Métodos: En el estudio experimental in vitro se realizaron cuatro impresiones con silicona por condensación (Speedex) con un dispositivo específico con cuatro distancias, con un total de 16 mediciones llevadas a cabo con cada instrumento. Los tiempos predeterminados de medición fueron: inmediatamente después de la impresión (T0), después de 30 minutos (T1), 1 h (T2) y 7 días (T3) de la impresión. Las medias y desviaciones estándar de las mediciones se analizaron con prueba de varianza y la prueba de Tukey, con un nivel de significancia de 0,05. Resultados: La media (mm) para las muestras medidas con el calibrador digital (T0= 5,82; T1 y T2= 5,8; T3= 5,78) y la máquina de medición por coordenadas tridimensional (T0= 5,75; T1= 5,78; T2 y T3= 5,77), presentaron diferencia estadísticamente significativa de la dimensión de los valores iniciales para los valores después de 7 días (p = 0,037; p = 0,013, respectivamente), la misma no se dio para el uso del estereomicroscopio (T0, T1 y T3= 5,83; y T2 = 5,81), que presentó similitud estadística en todos los tiempos (p = 0,754). Conclusiones: El método de medición fue el factor relevante que influenció en los resultados de las dimensiones de las impresiones, los cuatro tiempos no fueron relevantes en los cambios dimensionales de la silicona de condensación analizada.

Copyright of Revista Facultad de Odontología Universidad de Antioquia is the property of Universidad de Antioquia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Odontología Vital is the property of Universidad Latina de Costa Rica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

ntroduction: The thermocured acrylic resins are used as base material for teeth due to their aesthetic look, low water retention and solubility, relatively low toxicity, their repairability and their simple processing technique. Objective: To evaluate the super cial roughness of two denture-based acrylic resins exposed to artificial saliva. Methodology: In vitro study was performed, with 30 specimens of acrylic resins, divided into two groups Iv and Vr (n = 15), manufactured from a steel matrix; Two roughness measurements were performed: the initial and nal with the Mitutoyo Rogusimeter, to obtain the Ra (arithmetic mean), Rq (quadratic mean) and Rz(Mean). In between the initial and nal measurements, the specimens were submerged in arti cial saliva at 37 oC, for 60 days period. The data results were tabulated and statistically analyzed with the t-student and Anova tests. Results: Intergroup comparison was made in the baseline and nal values without showing statistical di erence for the Ra variables (1.9 ± 0.83 μm, 2.0 ± 0.72 μm); Rq (2.35 ± 1.01 μm; 2.7 ± 1.0 μm) and Rz (9.7 ± 5.3 μm, 12.7 ± 4.7 μm) for groups Iv and Vr respectively for baseline values; and Ra (0.58 ± 0.29μm, 0.68 ± 0.32μm), Rq (0.64 ± 0.25μm, 0.83 ± 0.39μm) and Rz (2.46 ± 0.88μm; ,03 ± 1.33μm) for nal values in groups Iv and Vr respectively, (p> 0.05). When comparing the intragroup changes in the surface roughness before and after the immersion in saliva, a statistically signi cant di erence was found for the values Ra, Rq, Rz (p

The use of full ceramic systems to restore teeth in the anterior area is today the preferred method over conventional metal-ceramic systems due to the combination of aesthetic and mechanical properties, in addition to the biocompatibility of these materials and the possibility they offer to minimize tooth preparation. However, due to the sensitivity of the technique while using these systems, especially those that require adhesive cementation, it is highly important to be familiar with their characteristics and indications in order to make the right choice according to each patient’s conditions. The literature reports that the possible clinical failures of these materials are multifactorial, with occlusal instability being one of the causes. Therefore, their biomechanical behavior and the strict implementation of clinical protocols are necessary for successful long-term restorations. This article discusses the various adhesive restorative options to rehabilitate the anterior area and presents their application to a patient’s clinical case with esthetic purposes.

Copyright of Revista Odontología Vital is the property of Universidad Latina de Costa Rica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Odontología Vital is the property of Universidad Latina de Costa Rica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Nacional de Odontología is the property of Universidad Cooperativa de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Calcium silicate cements have been used as dental materials for more than twenty years; however, their use in restorative dentistry is more recent. Better mechanical properties and shorter curing times make them suitable for a variety of applications in which they are used as a substitute of dentin, including direct/indirect pulp capping and as cavity base/liner. These materials may also be used to restore enamel temporarily. This article seeks to review the available scientific evidence with a focus on their applications in restorative dentistry. The information was gathered by reviewing original scientific research articles and literature reviews published in journals available in databases such as Medline/Pubmed and Scielo, along with technical information provided by the manufacturers of these cements. This article describes the composition, instructions for use, and curing reaction of calcium silicate cements, as well as the scientific evidence on their applications in restorative dentistry.

The various forms of systemic allergic reactions are very well defined, not those that occur in the oral mucosa. These are clinical situations rarely described in the specialized literature and, in turn, poorly understood; however, its presentation in the oral cavity is much more common than they really think. Oral atopy comprise a wide variety of symptoms and signs sometimes difficult to differentiate from other adverse reactions. It is important to know the dental materials and other substances of stomatological use causing clinical diseases presented in oral mucosa; it corresponds to Stomatology Specialist his knowledge for diagnosis and successful treatment.

Introduction: the dental traumatisms are events that frequently happen. The data gathered by the statistics, reveal significant figures as for the incidence and prevalence of these accidents, therefore you has ended up considering as a problem of Public Health, for the presage of the traumatized teeth, and it is of vital importance that an appropriate treatment is made as soon as possible after the accident. The therapy to make will depend of: the size of the exhibition, lapsed time, I develop of the foramen apical, vitality and teething type. Objective: to describe the feasibility of a case of apicoformación in left incisive superior power station, with cementation of rigid stem, stump conformation and definitive esthetic and functional restoration. Discussion: Patient of 8 years old, masculine that goes to consultation after suffering traumatism consistent dentoalveolar with complicated Fracture of crown, to the rays X is observed slight periodontal expansion and immature apex. Conclusions: the cementation of a rigid stem is an alternative feasibly to realize in functional treatments of apexification for complicated fracture of crown, due to its supposed a rapid recuperation of oral functions and integral social- psychological of the patient.

Bulk-fill resin-based composites (RBCs) have recently been introduced on the market, and according to the manufacturers, they could be used to restore cavities in 4- or 5-mm thick increments. This would probably mean a major technique simplification compared to the incremental technique. However, the properties and modes of use of RBCs vary significantly between one and the other. In addition, due to their recent appearance on the market, there are not enough studies that validate the clinical performance of these materials. This article aims to conduct a state of the art review of the available literature on the Medline/Pubmed and ScIELO databases, published between 2000 and 2014, describing the composition, classification, and results of studies currently published.