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OBJECTIVES: To evaluate the effect of whitening toothpastes with different hydrogen peroxide (HP) concentrations on HP permeability, color change, and physicochemical properties, compared to at-home bleaching treatment. MATERIALS AND METHODS: Forty-nine premolars were randomized into seven groups (n = 7): untreated (control); at-home bleaching with 10% carbamide peroxide gel (AH; 10% CP) with 14 and 28 applications of 180 min each (AH [14 × 180 min] and AH [28 × 180 min]); three whitening toothpastes (3% HP; 4% HP and 5% HP) and 10% CP brushed 28 times for 90 s each (TB [28 × 90 s]). HP permeability was measured using a UV-VIS spectrophotometer and color change by a digital spectrophotometer (ΔEab, ΔE00, and ΔWID). Initial concentration, pH, and viscosity were measured through titration, digital pH meter, and rheometer, respectively. Statistical analysis included one-way ANOVA, Tukey's test, and Dunnett's test (α = 0.05). RESULTS: 4% HP group showed acidic pH, the lowest viscosity and the highest HP concentration into the pulp chamber (p < 0.05). The 10% CP groups had lower HP in the pulp chamber and greater color change than other groups (p < 0.05), except the 5% HP group in ΔEab and ΔE00. For ΔWID, the 10% CP AH groups showed greater whitening than other groups (p < 0.05). CONCLUSIONS: Whitening toothpaste with up to 5% HP resulted in higher HP permeability and less color change compared to 10% CP. Higher HP commercial concentrations in toothpaste increased whitening effect; however, acidic pH toothpastes exhibited greater HP permeability. CLINICAL RELEVANCE: Whitening toothpastes with high hydrogen peroxide concentrations were less effective than at-home bleaching, resulting in less color change and greater permeability of hydrogen peroxide, potentially increasing the risk of tooth sensitivity.

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OBJECTIVE: To map and summarize the current scientific evidence concerning the active ingredients, effectiveness, and adverse effects of over-the-counter (OTC) bleaching products. DATA AND SOURCE: This study was conducted according to the PRISMA-ScR guidelines for scoping reviews and registered on the Open Science Framework platform. STUDY SELECTION: Database searches were conducted in PubMed/MEDLINE, Embase, and Scopus up to January 2024. All in vitro, in situ, and clinical studies evaluating the effectiveness and adverse effects of OTC bleaching products were included. A descriptive analysis of the included studies was performed. RESULTS: A total of 88 studies were included. Most of them were in vitro studies (n = 49), followed by randomized clinical trials (n = 28). The main OTC bleaching products identified were whitening or stain-removing toothpastes (n = 42), followed by whitening strips (n = 39). Most clinical studies indicate that whitening strips are effective in improving tooth color and providing whitening benefits. In contrast, the bleaching effectiveness of toothpastes, mouth rinses and whitening trays was mainly supported by in vitro studies. The main adverse effects associated with OTC bleaching agents were tooth sensitivity and gingival irritation. CONCLUSION: A wide variety of OTC bleaching products is available for consumer self-administered use. Clinical studies have mainly confirmed the bleaching effectiveness of whitening strips, while the validation for toothpastes, mouth rinses and whitening trays has mainly relied on in vitro studies. Nevertheless, the use of OTC bleaching products may result in adverse effects, including tooth sensitivity, gingival irritation, and enamel surface changes. CLINICAL SIGNIFICANCE: Some over-the-counter bleaching products may have whitening properties supported by clinical studies, particularly those containing hydrogen or carbamide peroxide. Nonetheless, clinicians must be aware of the potential risks associated with excessive self-administration of these products, which may result in adverse effects.

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Introdução:A estética do sorriso é um aspecto valorizado pela sociedade atual, o que demanda que os profissionais de odontologia estejam atualizados sobre materiais dentários e novas técnicas para alcançar resultados estéticos restauradores de alta qualidade. A resina composta é frequentemente utilizada para simplificar a reabilitação oral, pois oferece facetas dentárias que combinam excelente estética e durabilidade. Objetivo:Este artigo tem como objetivo relatar um caso clínico de reabilitação estética utilizando facetas em resina composta com fechamento de diastemas.Relato de caso:Uma paciente do sexo feminino, com 24 anos de idade, procurou a clínica escola de odontologia com insatisfação em relação à estética do seu sorriso. A pacienteapresentava diastemas, restauração defeituosa e desproporção no tamanho dos dentes anteriores. O tratamento consistiu em um clareamento caseiro prévio, seguido pela confecção de facetas diretas em resina composta para fechamento dos diastemas e correção da desproporção dentária. Foram utilizados um Jig Estético e o software Digital Smile Design (DSD)para o planejamento, além de um mock-up em resina bisacrílica. Após a confecção das facetas, foi obtido um resultado estético final satisfatório. O caso incluiu um total de oito facetas,dos dentes 14 ao 24. Conclusão:O tratamento utilizando restaurações em resina composta proporcionou à paciente uma reabilitação estética, funcional e biológica (AU).

Introduction:Smile aesthetics is an aspect valued by today's society, which demands that dental professionals are up to date on dental materials and new techniques to achieve high-quality restorative aesthetic results. Composite resin is often used to simplify oral rehabilitation, as it offers dental veneers which combine excellent aesthetics and durability. Objective:This article aims to report a clinical case of aesthetic rehabilitation using composite resin veneers with diastema closure. Case report:A24-year-old female patient came to the dental school clinic with dissatisfaction regarding the aesthetics of her smile. The patient had diastemas, defective restoration and disproportionate anterior teeth size. The treatment consisted of prior at-home tooth bleaching, followed by creating direct composite resin veneers to close the diastemas and correct tooth disproportion. An Aesthetic Jig and the Digital Smile Design (DSD) software program were used for planning, in addition to a mock-up in bisacrylic resin. After treatment, a satisfactory final aesthetic result was obtained. The case included a total of eight veneers, from teeth 14 to 24. Conclusion:Treatment using composite resin restorations provided the patient with aesthetic, functional and biological rehabilitation (AU).

Introducción: La estética de la sonrisa es un aspecto valorado por la sociedad actual, hecho que demanda de los profesionales de odontología actualización constante sobre los materiales dentarios y nuevas técnicas para alcanzar resultados estéticos restauradores de altacualidad. La resina compuesta es frecuentemente utilizada para simplificar la rehabilitación oral, pues ofrece facetas dentarias que combinan excelente estética y durabilidad.Objetivo: Este artículo tiene como objetivo relatar un caso clínico de rehabilitación estética a partir de la utilización de facetas en resina compuesta con cierre de diastemas. Informe de caso: Una paciente, del sexo femenino, con 24 años de edad, buscó la clínica-escuela de odontología insatisfecha con la estética de su sonrisa. La paciente presentaba diastemas, restauración dentaria defectuosa y desproporción en el tamaño de los dientes anteriores. El tratamiento consistió en un blanqueamiento casero previo, seguido por la confección de facetas directas de resina compuesta para cierre de los diastemas y corrección de la desproporción dentaria. Fueron utilizados un Jig Estético y el software Digital Smile Design(DSD) para el planeamiento, además de un mock-upen resina bisacrílica. Tras la confección de las facetas, fue obtenido un resultado estético final satisfactorio. El caso incluyó un total de ocho facetas, de los dientes 14 al 24.Conclusión: El tratamiento a partir de restauraciones en resina compuesta proporcionó a la paciente una rehabilitación estética, funcional y biológica (AU).

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OBJECTIVE: This systematic review aimed to analyze if using polywave light-emitting diodes (LED) to photoactivate resin-based materials (resin composites, adhesive systems, and resin cements) containing alternative photoinitiators provide better physicochemical properties than monowave ones. MATERIAL AND METHODS: Inclusion criteria were in vitro studies that evaluated the degree of conversion, microhardness and flexural strength in resin-based materials containing alternative photoinitiators and light-activated with mono and polywave LEDs. Exclusion criteria were studies that evaluated the physicochemical properties of composites through any material interposed between the LED and the resin composite and studies that exclusively compared different modes and/or light activation times. Selection of studies, data extraction, and risk-of-bias analysis was performed. Data from selected studies were qualitatively analyzed. A systematic search was performed in June 2021 using PubMed/Medline, Embase, Scopus, and ISI Web of Science databases and grey literature without language restriction. RESULTS: A total of 18 studies were included in the qualitative analysis. Nine studies used diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (TPO) as an alternative photoinitiator for resin composite. Polywave LED improved the degree of conversion of resin composite compared to monowave in 9 of the included studies. Polywave LED improved the microhardness of resin composite compared to monowave in 7 of the included studies. Polywave LED improved the degree of conversion for 11 studies and microhardness of resin composite compared to monowave for 7 included studies. No differences in the flexural strength medium between poly and monowave LEDs were observed. The evidence was graded as low quality due to the high risk of bias for 11 studies. CONCLUSION: The existing studies, with their limitations, revealed that the polywave light-emitting diode maximizes activation, resulting in a higher degree of double-bond conversion and microhardness of resin composites containing alternative photoinitiators. However, the flexural strength of these materials is not influenced by the type of light activation device.

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Introdução:A escola é um ambiente propício para o desenvolvimento de hábitos que podem ser aplicadospor toda a vida. Nessa perspectiva, as atividades educativas com escolares podem contribuir significativamente na promoção de saúde bucal e na disseminação de bons hábitos de higiene oral, sendo alternativas capazes de instruir esses sujeitos eficientemente.Objetivo:Relatar a experiência de uma intervenção lúdica de caráter educativo realizada pela equipe de um projeto de extensão com uma turma de educação infantil em escola institucional de educação básica.Metodologia:A partir do conhecimento da faixa etária dos escolares, um jogo educativo foi desenvolvido e uma ação de caráter lúdico foi elaborada. A alimentação saudável foi a temática escolhida para ser trabalhada interdisciplinariamente à conscientização sobre o papel dos alimentos no desenvolvimento da cárie dentária e das orientações de higiene oral. Ao "brincar de fazer compras", momento em que os alunos podiam escolher quais alimentos adquirir no jogo, foi possível discorrer sobre quais dessas escolhas alimentares não eram saudáveis e também orientar os participantescom macromodelosobre a forma correta de escovação e uso dofio dental.Resultados:A interação das crianças com a atividade e com toda equipe de extensionistas foi bastante satisfatória. Foi possível verificar que os mesmos assimilaram bem os assuntos trabalhados ludicamente e foi demonstrado pela intervenção que os alunos conseguiram adquirir conhecimentos práticos sobre a saúde bucal no momento de orientação de higiene oral tanto no jogo quanto na simulação da escovação com macromodelo. Conclusões:Atividades lúdicas para escolares podem ser instrumentos capazes de transmitir conhecimentos em saúde bucal satisfatoriamente ao passo que sinalizam aspectos que devem ser desenvolvidos e incorporados no cotidiano dos indivíduos desde a mais tenra idade (AU).

Introduction: School is a conducive environment for developing habits that can be extended throughout life. From this perspective, educational activities with schoolchildren can significantly contribute to promoting oral health and to disseminate good oral hygiene habits, constituting alternatives which are capable of efficiently educating these subjects. Objective:To report the experience of a playful and educational intervention carried out by the team of an extension project with an early childhood education class in an institutional school of basic education. Methodology: An educational game was developed based on the knowledge of the age range of the school children, and a playful action was elaborated. A healthy eating theme was chosen to be worked on in an interdisciplinary way to raise awareness about the role of food in developing dental caries and oral hygiene guidelines. By "playing shopping" in which students could choose which foods to buy in a game, it was possible to discuss which of these food choices were unhealthy and also guide participants with a macromodel on the correct way of brushing and flossing. Results: The interaction of children with the activity and with the entire extension team was quite satisfactory. It was possible to verify that they had assimilated the playfully addressed issues and it was demonstrated that students were able to acquire practical knowledge about oral health during the oral hygiene orientation in both the game and in the brushing simulation with the macromodel. Conclusions:Playful activities for schoolchildren may constitute instruments which are capable of satisfactorily transmitting knowledge on oral health, and can indicate aspects which must be developed and incorporated into the daily lives of individuals from a very early age (AU).

Introducción: La escuela es un entorno favorable para el desarrollo de hábitos que pueden prolongarse a lo largo de la vida. En esta perspectiva, las actividades educativas con alumnos pueden contribuir significativamente a la promoción de salud oral y de difusión de buenas costumbres de higiene oral, siendo estas alternativas capaces de educar estos sujetos eficientemente.Objetivo:Relatar la experiencia de una intervención lúdica educativo, realizada por un equipo de un proyecto de extensión, direccionada a un grupo de educación infantil en una escuela del sistema educativo básico brasileño. Metodología: A partir del conocimiento de la franja etaria , se diseñó un juego educativo y se planeó una acción de carácter lúdico. La alimentación sana fue la temática elegida para que, de este modo, además de orientaciones de cuidados orales, también se trabajara, interdisciplinariamente, la concientización sobre la relación entre los alimentos y el surgimiento de caries dentarias. Al "jugar a las compras", momento en que los alumnos podían elegir cuales alimentos iban a adquirir, fue posible debatir sobre cuales de las opciones alimentares no eran sanas y, además de eso, orientar los participantes, con un tipodonto, sobre la forma correcta de cepillarse y de usar el hilo dental. Resultados: La interacción con la actividad y con el equipo de extensión fue muy exitosa. Fue posible verificar que los alumnos comprendieron los temas trabajados lúdicamente y también que, a través de la intervención, consiguieron alcanzar conocimientos prácticos sobre salud oral, tanto en el momento de la orientación de higiene oral cuanto en la actividad de simulación de cepillado con el apoyo del tipodonto.Conclusiones:Actividades lúdicas para niños r pueden ser instrumentos capaces de proporcionar aprendizajes sobre salud oral en la medida en que señalan aspectos que necesitan ser desarrollados en las prácticas rutineras de sujetos desde muy temprana edad (AU).

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