RESUMO

BACKGROUND: The survival of ART restorations can be influenced by the choice of the restorative material. The aim of this randomized non-inferiority controlled trial was to compare the 2-year survival rate and cost analysis of two encapsulated glass ionomer cements (GIC) as occlusoproximal restorative materials in primary molars. METHODS: Children from public schools in Tietê (Brazil), aged 4-8 years with occlusoproximal dentine carious lesions in primary molars were selected and randomly assigned to receive either Equia Forte (EF) or Riva Self Cure (RSC) as restorative materials. Treatment was carried out by two trained final-year dental students in schools following ART premises. Restorations were assessed by a trained and calibrated examiner after 2, 6, 12, 18, and 24 months. The primary outcome was restoration survival after 2 years, analyzed using Kaplan-Meier survival and Cox regression analysis (α = 5%). Professional and materials costs for each group were collected in Brazilian Reais (R$) and converted into US dollars (US$) and analyzed using Monte-Carlo simulation. RESULTS: A total of 152 children (76 per group) were included in the study, and 121 (79%) were evaluated after 2 years. The overall 2-year restoration survival rate was 39% (EF = 45%; RSC = 32%) with no difference between the groups. The baseline and 2-year total cost of restorations using RSC was lower when compared to EF (incremental cost: US$ 6.18). CONCLUSION: After two years of follow-up, Riva Self Cure shows comparable restoration survival rates to Equia Forte, being more cost-effective in the Brazilian perspective. TRIAL REGISTRATION: This randomized clinical trial was registered on ClinicalTrials.Gov - NCT02730000.

Assuntos

RESUMO

PURPOSE: To compare the Atraumatic Restorative Treatment (ART) associated with Brix3000™ to ART considering treatment time, pain experienced, and acceptability to children. METHODS: This study was accepted in Research Ethics Committee in July 2019 (number 3469402). Healthy patients (n = 20) aged 3-9 years, with at least one primary molar with occlusal dentine caries without cusp involvement were randomly allocated to either the ART + Brix3000™ group or the ART-only group. The sample was characterised by sex, age, tooth location and caries experience. Time spent and pain experience scores were recorded at prophylaxis, caries removal and restoration. The pain experience (intense, moderate, or mild) was evaluated by the Face, Legs, Activity, Cry, Consolability-revised scale (FLACC-r). Acceptability was assessed by a five-point hedonic facial scale (dichotomised into 'like' and 'indifferent/dislike' bins) and by an open-question interview. Mann-Whitney, Chi-square, and Fisher's exact tests were applied to discern differences in time, pain/sample characterisation and acceptability, respectively. RESULTS: The ART + Brix3000™ group required 8.6 ± 3.1 min to remove caries tissue, whereas the ART group required only 4.8 ± 2.0 min (p = 0.03). The total time spent with treatments was 13.1 ± 4.0 min for ART + Brix3000™, and 9.8 ± 2.7 min for ART (p = 0.03). There was no difference in pain experience and acceptability found among the groups (p > 0.05). CONCLUSION: Although the ART + Brix3000™ technique demanded more treatment time than the ART alone, there were no differences in either pain experience or acceptability.

Assuntos

RESUMO

A presente dissertação foi dividida em três estudos: o primeiro avaliou o Tratamento Restaurador Atraumático (TRA) associado ou não ao Brix3000™ quanto ao tempo de tratamento, experiência de dor e aceitabilidade de crianças (n=20) de 3-9 anos em um ensaio clínico controlado e randomizado. O tempo foi cronometrado do início ao fim do tratamento. A experiência de dor foi avaliada pela versão revisada da escala "Face, Legs, Activity, Cry, Consolability" (FLACC-r) e a aceitabilidade por uma escala facial hedônica. O grupo TRA + Brix3000™ gastou 4 minutos a mais (13,14±4,0 min) que o grupo TRA (9,8±2,7 min) (p=0,03). Não houve diferença quanto à aceitabilidade e à dor (p>0,05). O segundo estudo caracterizou a literatura científica mundial sobre produtos de remoção químico-mecânica de tecido cariado (RQMTC), por meio de mineração de dados bibliométricos, metodológicos e dos resultados de 397 artigos. Houve maior número de publicações entre 2011-2020, no Journal of Dental Research, desenvolvidos no Brasil e Índia. Estudos in vitro foram mais prevalentes, seguidos dos estudos clínicos. Nestes últimos, Carisolv™e Papacarie™ foram os produtos mais utilizados, prescritos para uso isolado e comparados ao uso de brocas. Os produtos para RQMTC foram mais estudados em crianças, cujos dentes foram restaurados com o cimento de ionômero de vidro, nos quais o tempo gasto e dor foram os principais desfechos. Observou-se que a RQMTC demanda maior tempo, entretanto, promove redução de ansiedade, dor e necessidade de anestesia local. O estudo 3 avaliou o conhecimento de dentistas brasileiros sobre odontologia de mínima intervenção (OMI) pelo desenvolvimento, validação e aplicação de uma escala de conhecimento (Minimal Interventional Dentistry for Dental Caries Knewlodge Scale - MIDDeC-KS), de 12 itens (0-12 pontos). Quanto maior a pontuação, maior o conhecimento do dentista. Dados sociodemográficos e de formação acadêmica foram coletados. A escala (α=0,72; ICC=0,85) foi aplicada por meio da plataforma Survey Monkey™ a 637 dentistas que demostraram ter conhecimento médio de 7,4±2,5 sobre OMI. As maiores pontuações foram alcançadas por mulheres (7,8±2,4; p=0,00); profissionais com mais de 10 anos de formados (7,6±2,6; p=0,02); emfaculdades públicas (7,8±2,4; p=0,00), atuando no setor público (7,9±2,3; p=0,00) ou acadêmico (8,8±2,3; p=0,04). Pontuações maiores foram alcançadas por especialistas em Odontopediatria (9,2±1,6) e menores por Cirurgiões buco-maxilo-faciais (3,1±2,1). Houve maior conhecimento sobre controle de dieta, biofilme e aplicação tópica de flúor. Técnica de Hall, infiltrante resinoso e RQMTC foram as técnicas menos conhecidas. Com a presente dissertação, concluiu-se que o TRA associado ao Brix3000™ demandou mais tempo de tratamento, sem diferença quanto à aceitabilidade e à dor. Os estudos com produtos para RQMTC aumentaram ao longo dos anos, principalmente em países em desenvolvimento. Os estudos clínicos com crianças tendem a avaliar o tempo gasto e a dor em comparação ao uso de brocas e, a RQMTC reduz ansiedade, dor e necessidade de anestesia, embora aumente o tempo de tratamento. Foi constatada suficiente evidência psicométrica da escala MIDDeC-KS. As maiores pontuações foram alcançadas por profissionais do gênero feminino e especialistas em Odontopediatria, com maior conhecimento sobre controle de dieta, biofilme e aplicação tópica de flúor. (AU)

This dissertation was divided into three studies: the first evaluated the Atraumatic Restorative Treatment (ART) associated or not with Brix3000 ™ in terms of treatment time, pain experience and acceptability of children (n=20) aged 3-9 years through a randomized controlled clinical trial. The time was calculated from the beginning to the end of the treatment. Pain experience was assessed by the revised version of the "Face, Legs, Activity, Chy, Consolability" (FLACC-r) scale and acceptability by a hedonic facial scale. The ART + Brix3000 ™ group spent 4 minutes longer (13.14±4.0 min) than the ART group (9.8±2.7 min) (p=0.03). There was no difference regarding acceptability and pain (p>0.05). The second study characterized the world scientific literature on chemical-mechanical carious tissue removal (CMCTR) products, through bibliometric, methodological and results data mining of the 397 articles. There was a greater number of publications between 2011-2020, in the Journal of Dental Research, which were developed in Brazil and India. In vitro studies were more prevalent, followed by clinical studies. In the latter, Carisolv ™ and Papacarie ™ were the most used products prescribed for isolated use and compared to the use of drills. CMCTR products have been most studied in children whose teeth were restored with glass ionomer cement, in which time spent and pain were the main outcomes. Clinical application of CMCTR takes more treatment time but can also reduce patient anxiety, pain and need for anesthesia Study 3 assessed the knowledge of Brazilian dentists about minimal intervention dentistry (MID) through the development, validation, and application of a 12-item (0-12 points) knowledge scale (Minimal Interventional Dentistry for Dental Caries Knewlodge Scale - MIDDeC-KS). The higher the score, the greater the knowledge of the dentist. Gender, educational level, specialty, academic training institutions and workplace were collected. The final scale (α=0.72; ICC=0.85) was applied through the Survey Monkey™ platform to 637 dentists who demonstrated an average knowledge of 7.4±2.5 about MID. The highest scores were achieved by women (7.8±2.4; p=0.00); professionals with more than 10 years of graduation (7.6±2.6; p=0.02); in public colleges (7.8±2.4; p=0.00), working in the public sector (7.9±2.3; p=0.00) or academic (8.8±2.3; p =0.04). Higher scores were achieved by specialists in Pediatric Dentistry (9.2±1.6) and lowest by maxillofacial surgeons (3.1±2.1). There was greater knowledge about diet and biofilm control, as well as topical application of fluoride. Hall technique, resin infiltration and CMCTR were the least known MID techniques. With the present master thesis, it was concluded that ART associated with Brix3000™ required more treatment time, with no difference in terms of acceptability and pain. Studies with products for CMCTR have increased over the years, mainly in developing countries. The clinical studies with children tend to assess the time spent and pain compared to the use of drills. CMCR clinical application reduces anxiety, pain and need for anesthesia, despite increase treatments' time Sufficient psychometric evidence of the MIDDeC-KS scale was observed. The highest scores were achieved by women, specialists in Pediatric Dentistry, with more knowledge about diet control, biofilm, and topical fluoride application. (AU)

Assuntos

RESUMO

A presente dissertação foi dividida em três estudos: o primeiro avaliou o Tratamento Restaurador Atraumático (TRA) associado ou não ao Brix3000™ quanto ao tempo de tratamento, experiência de dor e aceitabilidade de crianças (n=20) de 3-9 anos em um ensaio clínico controlado e randomizado. O tempo foi cronometrado do início ao fim do tratamento. A experiência de dor foi avaliada pela versão revisada da escala "Face, Legs, Activity, Cry, Consolability" (FLACC-r) e a aceitabilidade por uma escala facial hedônica. O grupo TRA + Brix3000™ gastou 4 minutos a mais (13,14±4,0 min) que o grupo TRA (9,8±2,7 min) (p=0,03). Não houve diferença quanto à aceitabilidade e à dor (p>0,05). O segundo estudo caracterizou a literatura científica mundial sobre produtos de remoção químico-mecânica de tecido cariado (RQMTC), por meio de mineração de dados bibliométricos, metodológicos e dos resultados de 397 artigos. Houve maior número de publicações entre 2011- 2020, no Journal of Dental Research, desenvolvidos no Brasil e Índia. Estudos in vitro foram mais prevalentes, seguidos dos estudos clínicos. Nestes últimos, Carisolv™ e Papacarie™ foram os produtos mais utilizados, prescritos para uso isolado e comparados ao uso de brocas. Os produtos para RQMTC foram mais estudados em crianças, cujos dentes foram restaurados com o cimento de ionômero de vidro, nos quais o tempo gasto e dor foram os principais desfechos. Observou-se que a RQMTC demanda maior tempo, entretanto, promove redução de ansiedade, dor e necessidade de anestesia local. O estudo 3 avaliou o conhecimento de dentistas brasileiros sobre odontologia de mínima intervenção (OMI) pelo desenvolvimento, validação e aplicação de uma escala de conhecimento (Minimal Interventional Dentistry for Dental Caries Knewlodge Scale - MIDDeC-KS), de 12 itens (0-12 pontos). Quanto maior a pontuação, maior o conhecimento do dentista. Dados sociodemográficos e de formação acadêmica foram coletados. A escala (α=0,72; ICC=0,85) foi aplicada por meio da plataforma Survey Monkey™ a 637 dentistas que demostraram ter conhecimento médio de 7,4±2,5 sobre OMI. As maiores pontuações foram alcançadas por mulheres (7,8±2,4; p=0,00); profissionais com mais de 10 anos de formados (7,6±2,6; p=0,02); em faculdades públicas (7,8±2,4; p=0,00), atuando no setor público (7,9±2,3; p=0,00) ou acadêmico (8,8±2,3; p=0,04). Pontuações maiores foram alcançadas por especialistas em Odontopediatria (9,2±1,6) e menores por Cirurgiões buco-maxilo-faciais (3,1±2,1). Houve maior conhecimento sobre controle de dieta, biofilme e aplicação tópica de flúor. Técnica de Hall, infiltrante resinoso e RQMTC foram as técnicas menos conhecidas. Com a presente dissertação, concluiu-se que o TRA associado ao Brix3000™ demandou mais tempo de tratamento, sem diferença quanto à aceitabilidade e à dor. Os estudos com produtos para RQMTC aumentaram ao longo dos anos, principalmente em países em desenvolvimento. Os estudos clínicos com crianças tendem a avaliar o tempo gasto e a dor em comparação ao uso de brocas e, a RQMTC reduz ansiedade, dor e necessidade de anestesia, embora aumente o tempo de tratamento. Foi constatada suficiente evidência psicométrica da escala MIDDeC-KS. As maiores pontuações foram alcançadas por profissionais do gênero feminino e especialistas em Odontopediatria, com maior conhecimento sobre controle de dieta, biofilme e aplicação tópica de flúor. (AU)

This dissertation was divided into three studies: the first evaluated the Atraumatic Restorative Treatment (ART) associated or not with Brix3000 ™ in terms of treatment time, pain experience and acceptability of children (n=20) aged 3-9 years through a randomized controlled clinical trial. The time was calculated from the beginning to the end of the treatment. Pain experience was assessed by the revised version of the "Face, Legs, Activity, Chy, Consolability" (FLACC-r) scale and acceptability by a hedonic facial scale. The ART + Brix3000 ™ group spent 4 minutes longer (13.14±4.0 min) than the ART group (9.8±2.7 min) (p=0.03). There was no difference regarding acceptability and pain (p>0.05). The second study characterized the world scientific literature on chemical-mechanical carious tissue removal (CMCTR) products, through bibliometric, methodological and results data mining of the 397 articles. There was a greater number of publications between 2011-2020, in the Journal of Dental Research, which were developed in Brazil and India. In vitro studies were more prevalent, followed by clinical studies. In the latter, Carisolv ™ and Papacarie ™ were the most used products prescribed for isolated use and compared to the use of drills. CMCTR products have been most studied in children whose teeth were restored with glass ionomer cement, in which time spent and pain were the main outcomes. Clinical application of CMCTR takes more treatment time but can also reduce patient anxiety, pain and need for anesthesia Study 3 assessed the knowledge of Brazilian dentists about minimal intervention dentistry (MID) through the development, validation, and application of a 12-item (0-12 points) knowledge scale (Minimal Interventional Dentistry for Dental Caries Knewlodge Scale - MIDDeC-KS). The higher the score, the greater the knowledge of the dentist. Gender, educational level, specialty, academic training institutions and workplace were collected. The final scale (α=0.72; ICC=0.85) was applied through the Survey Monkey™ platform to 637 dentists who demonstrated an average knowledge of 7.4±2.5 about MID. The highest scores were achieved by women (7.8±2.4; p=0.00); professionals with more than 10 years of graduation (7.6±2.6; p=0.02); in public colleges (7.8±2.4; p=0.00), working in the public sector (7.9±2.3; p=0.00) or academic (8.8±2.3; p =0.04). Higher scores were achieved by specialists in Pediatric Dentistry (9.2±1.6) and lowest by maxillofacial surgeons (3.1±2.1). There was greater knowledge about diet and biofilm control, as well as topical application of fluoride. Hall technique, resin infiltration and CMCTR were the least known MID techniques. With the present master thesis, it was concluded that ART associated with Brix3000™ required more treatment time, with no difference in terms of acceptability and pain. Studies with products for CMCTR have increased over the years, mainly in developing countries. The clinical studies with children tend to assess the time spent and pain compared to the use of drills. CMCR clinical application reduces anxiety, pain and need for anesthesia, despite increase treatments' time Sufficient psychometric evidence of the MIDDeC-KS scale was observed. The highest scores were achieved by women, specialists in Pediatric Dentistry, with more knowledge about diet control, biofilm, and topical fluoride application. (AU)

Assuntos

RESUMO

INTRODUCTION: Cavitated carious lesions in primary and mixed dentition require prompt treatment to control caries progression. Silver diamine fluoride has emerged as an alternative to the atraumatic restorative technique due to its easy application. However, there is still uncertainty regarding its effectiveness and safety. METHODS: We searched in Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a metanalysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified ten systematic reviews, including two studies overall, which are randomized trials. We concluded that silver diamine fluoride compared to the atraumatic restorative technique may increase the arrest of caries in primary and mixed first phase dentition, however, the certainty of the evidence has been assessed as low. On the other hand, treatment with silver diamine fluoride compared to the atraumatic restorative technique (ART) probably increases the risk of adverse events.

INTRODUCCIÓN: Las lesiones de caries cavitadas en dentición primaria y mixta requieren un tratamiento oportuno, para evitar así la progresión de la caries. El fluoruro diamino de plata ha surgido como una alternativa a la técnica de restauración atraumática debido a su fácil aplicación. Sin embargo, aún existe incertidumbre en relación a su efectividad y seguridad. MÉTODOS: Realizamos una búsqueda en Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante el cribado de múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, analizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos diez revisiones sistemáticas que en conjunto incluyeron dos estudios primarios, ambos ensayos aleatorizados. Concluimos que el fluoruro diamino de plata en comparación a la técnica de restauración atraumática podría aumentar el arresto de caries en dentición primaria y mixta primera fase, pero la certeza de la evidencia ha sido evaluada como baja. Por otra parte, el tratamiento con fluoruro diamino de plata comparado con la técnica de restauración atraumática (ART) probablemente aumenta el riesgo de eventos adversos.

Assuntos

RESUMO

Prevention and health promotion are considered important strategies to control oral diseases. Dental caries is preventable disease and remains the most common chronic disease that affects mainly low income children and still considered the main cause of tooth loss in adulthood in Brazil. The aim of this study is to present a System Dynamics model (SDM) specifically developed with the Stella Architect software to estimate the cost and clinical hours required to control the evolution of dental caries in preschool children in Maringá, Brazil. Two main strategies to control caries were considered in the model: the application of fluoride varnish on teeth presenting white spots, and the use of Atraumatic Restorative Treatment (ART) in cavitated carious lesions without pulp involvement. The parameters used in the model were: number of people covered by a local oral health team = 4,000; number of children up to 5 years = 7% of the population; children's decayed, missing, filled teeth (dmft) index = 2.4; time/cost of 4 applications of fluoride varnish = 5 minutes/US$ 0.716; and time/cost of each ART restoration = 15 minutes/US$ 1.475. The SDM generated an estimated total cost of US$698.00, and a total of 112 clinical hours to treat the population in question. The use of the SDM presented here has the potential to assist decision making by measuring the material and human resources required to prevent and control dental caries at an early age.

Assuntos

RESUMO

Atraumatic Restorative Treatment (ART) is one of the strategies used to control dental caries; it involves hand instruments for removal of carious tissue, and restorations using high-viscosity Glass Ionomer Cement (GIC). The present controlled clinical trial aimed to evaluate the performance of low-cost GIC indicated for ART in primary teeth, compared with high-viscosity GIC, after one year of follow-up. Two-to six-year-old children with dentin caries lesions on one or two surfaces of anterior and posterior teeth were selected. The children were randomly assigned to 2 groups according to the restorative material used: G1 (control) - Ketac Molar®; G2 (experimental) - Vitro Molar®. Treatments were performed in a school setting, following the guidelines of the ART. A total of 728 restorations were performed in 243 children. Descriptive analysis and Poisson regression were applied, with a significance level of p < 0.05. After 12 months, 559 (76.8%) restorations were re-evaluated. The success rate was evaluated by the prevalence ratio (PR), associated with restorations performed in primary second molars (PR = 1.21; 95%CI = 1.03-1.42), and with small (PR = 1.35; 95%CI = 1.14-1.60) or medium cavities (PR = 1.29; 95%CI = 1.08-1.55), using Ketac Molar® material (PR= 1.07; 95%CI = 1.01-1.15), considering p < 0.05. Small or medium restorations in primary second molars performed with high-viscosity GIC (Ketac Molar®) were more successful than restorations performed with low-cost GIC indicated for ART.

Assuntos

RESUMO

INTRODUCCIÓN: Las lesiones de caries cavitadas en dentición primaria y mixta requieren un tratamiento oportuno, para evitar así la progresión de la caries. El fluoruro diamino de plata ha surgido como una alternativa a la técnica de restauración atraumática debido a su fácil aplicación. Sin embargo, aún existe incertidumbre en relación a su efectividad y seguridad. MÉTODOS: Realizamos una búsqueda en Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante el cribado de múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, analizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos diez revisiones sistemáticas que en conjunto incluyeron dos estudios primarios, ambos ensayos aleatorizados. Concluimos que el fluoruro diamino de plata en comparación a la técnica de restauración atraumática podría aumentar el arresto de caries en dentición primaria y mixta primera fase, pero la certeza de la evidencia ha sido evaluada como baja. Por otra parte, el tratamiento con fluoruro diamino de plata comparado con la técnica de restauración atraumática (ART) probablemente aumenta el riesgo de eventos adversos

INTRODUCTION: Cavitated carious lesions in primary and mixed dentition require prompt treatment to control caries progression. Silver diamine fluoride has emerged as an alternative to the atraumatic restorative technique due to its easy application. However, there is still uncertainty regarding its effectiveness and safety. METHODS: We searched in Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a metanalysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified ten systematic reviews, including two studies overall, which are randomized trials. We concluded that silver diamine fluoride compared to the atraumatic restorative technique may increase the arrest of caries in primary and mixed first phase dentition, however, the certainty of the evidence has been assessed as low. On the other hand, treatment with silver diamine fluoride compared to the atraumatic restorative technique (ART) probably increases the risk of adverse events.

Assuntos

RESUMO

Abstract Prevention and health promotion are considered important strategies to control oral diseases. Dental caries is preventable disease and remains the most common chronic disease that affects mainly low income children and still considered the main cause of tooth loss in adulthood in Brazil. The aim of this study is to present a System Dynamics model (SDM) specifically developed with the Stella Architect software to estimate the cost and clinical hours required to control the evolution of dental caries in preschool children in Maringá, Brazil. Two main strategies to control caries were considered in the model: the application of fluoride varnish on teeth presenting white spots, and the use of Atraumatic Restorative Treatment (ART) in cavitated carious lesions without pulp involvement. The parameters used in the model were: number of people covered by a local oral health team = 4,000; number of children up to 5 years = 7% of the population; children's decayed, missing, filled teeth (dmft) index = 2.4; time/cost of 4 applications of fluoride varnish = 5 minutes/US$ 0.716; and time/cost of each ART restoration = 15 minutes/US$ 1.475. The SDM generated an estimated total cost of US$698.00, and a total of 112 clinical hours to treat the population in question. The use of the SDM presented here has the potential to assist decision making by measuring the material and human resources required to prevent and control dental caries at an early age.

Assuntos

RESUMO

Este estudo objetivou: (1) investigar a eficácia in vitro do diamino fluoreto de prata (DFP) em paralisar lesões de cárie em dentina após diferentes concentrações e tempos de aplicação; (2) comparar o impacto do DFP e do tratamento restaurador atraumático (TRA) na qualidade de vida relacionada à saúde bucal (QVRSB) de préescolares; e (3) avaliar a eficácia do DFP comparado ao TRA, em paralisar lesões de cárie, por meio de um ensaio clínico controlado e randomizado após 2 anos de acompanhamento. Para o objetivo 1, blocos de dentina (n=42) foram fixados em placas de poliestireno. Um inóculo bacteriano misto (1,5x108 UFC/mL) foi adicionado ao meio de cultura com sacarose 5%, contido nas placas, que foram incubadas para a formação de biofilme. As amostras foram escaneadas em micro CT (M1) e tratadas com DFP de acordo com os grupos (n=6): DFP 30%, aplicação imediata; DFP 30%, 1'; DFP 30%, 3'; DFP 38%, aplicação imediata; DFP 38%, 1'; DFP 38%, 3'. Um grupo controle, sem tratamento, também foi preparado. Após o escaneamento (M2), os blocos foram submetidos a um desafio cariogênico (21 dias) e novamente escaneados (M3). O pH do meio de cultura e a profundidade das lesões inter e intra grupos foram comparados pelos testes de Kruskal-Wallis e Wilcoxon. Para os objetivos 2 e 3, préescolares com ao menos uma lesão de cárie ativa na oclusal de seus molares decíduos foram randomicamente alocados em dois grupos: DFP e TRA. Os índicesceo-d/CPO-DICDAS foram usados para detecção da presença e atividade de cárie. O B-ECOHIS foi usado para avaliar a QVRSB antes (M1), 15 dias (M2) e 3 meses (M3) após os tratamentos. O sucesso clínico foi avaliado após 6, 12, 18 e 24 meses. Foram ainda avaliados: tempo do procedimento, efeitos adversos/percepção estética e ansiedade. No estudo in vitro, em M1 e M2, não houve diferença na profundidade das lesões entre os grupos (p>0,05). Em M3, o DFP 38% apresentou menor pH do biofilme e os grupos que receberam aplicação por 1' e 3', em ambas as concentrações, não apresentaram aumento na profundidade da lesão em relação ao M1. DFP e TRA não diferiram quanto ao B-ECOHIS total, CIS e FIS em M2 e M3 e o B-ECOHIS total diminuiu de M1 para M2 e M3 em ambos os grupos (p<0,05). Após 2 anos, não houve diferença entre os tratamentos quanto à paralisação da cárie (p=0,072) e o tempo de tratamento para o DFP foi menor (p<0,001). Não houve diferença entre os grupos quanto aos efeitos adversos/percepção estética observados pelo operador (p=0,816) e pelos pais (p=1,000). A ansiedade não mudou após os tratamentos (p=0,583). Assim, o tempo mínimo de aplicação do DFP 30% para paralisar lesões de cárie foi de 1', enquanto o 38% paralisou com aplicação imediata, in vitro. Tanto o DFP quanto TRA melhoraram a QVRSB dos pré-escolares, sem diferença entre eles. Ainda, o DFP mostrou-se semelhante ao TRA na paralisação de cárie, ansiedade e efeitos adversos, requerendo menor tempo de cadeira. (AU)

This study aimed to: (1) investigate the in vitro efficacy of silver diamine fluoride (SDF) in arresting dentin caries lesions after different concentrations and application times; (2) compare the impact of SDF and atraumatic restorative treatment (ART) on the oral health-related quality of life (QHRQoL) in preschoolers; and (3) to evaluate the effectiveness of SDF compared to ART, in arresting caries lesions, through a controlled randomized clinical trial after 2 years of follow-up. For objective 1, dentin blocks (n=42) were fixed in polystyrene plates. A mixed bacterial inoculum (1.5x108 CFU/mL) was added to the culture medium with 5% sucrose, in the plates; that were incubated for biofilm formation. The samples were scanned on micro CT (M1) and treated with SDF according to the groups (n=6): SDF 30%, immediate application; SDF 30%, 1'; SDF 30%, 3'; SDF 38%, immediate application; SDF 38%, 1'; SDF 38%, 3'. A control group, without treatment, was also prepared. After scanning (M2), the blocks were submitted to a cariogenic challenge (21 days) and scanned again (M3). The pH of the culture medium and the depth of lesions between and within the groups were compared using the Kruskal-Wallis and Wilcoxon tests. For objectives 2 and 3, preschoolers with at least one active caries lesion on the occlusal surface of their primary molars were randomly allocated into two groups: SDF and ART. The indexes dmft/DMFT and ICDAS were used to detect the presence and activity of caries. B-ECOHIS was used to assess the QHRQoL of children before (M1), 15 days (M2) and 3 months (M3) after treatments. Clinical success was assessed after 6, 12, 18 and 24 months. Were also evaluated: time of the procedure, adverse effects/aesthetic perception and the child's anxiety. In the in vitro study, in M1 and M2, there was no difference in the depth of the lesions between the groups (p>0.05). In M3, SDF 38% had a lower pH of the biofilm and the groups that received application for 1' and 3', in both concentrations, did not present an increase in the depth of the lesion in relation to M1. SDF and ART did not differ in total B-ECOHIS, CIS and FIS in M2 and M3; and the total B-ECOHIS decreased from M1 to M2 and M3 for both groups (p<0.05). After 2 years, there was no difference between treatments regarding caries arrest (p=0.072) and the treatment time for SDF was shorter (p<0.001). There was no difference regarding the adverse effects/aesthetic perception observed by the operator (p=0.816) and reported by the parents (p=1.000), according to the groups. Anxiety did not change either before or after treatments (p=0.583). Thus, the minimum time of application of SDF 30% to arrest dentin caries was 1', while SDF 38% arrested with immediate application, in vitro. Both SDF and ART improved the QHRQoL of preschoolers, with no difference between them. Still, SDF was similar to ART in arresting caries, anxiety and adverse effects, requiring less chair time. (AU)

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