Papers by Gisele da Silveira Pereira
Bioscience Journal, Aug 12, 2022
The aim of this randomized double-blinded study was to evaluate the enamel surface roughness and ... more The aim of this randomized double-blinded study was to evaluate the enamel surface roughness and color change after one month of whitening toothpaste use and the color stability obtained 1 month after its interruption. 30 volunteers were divided into 3 groups (n = 10) corresponding to the dentifrices: 1) Colgate Total 12 Clean Mint (TD) (Control), 2) Colgate Luminous White (LW) and 3) Sensodyne Whitening Extra Fresh (SB). The volunteers were impression with addition silicone to obtain an epoxy resin replica of the upper central incisor for the initial surface roughness evaluation using a profilometer and the initial color of the incisors and canines was evaluated with a spectrophotometer after one week of wash-out. After 1 month, the color of the central incisors and canines was measured again, and the volunteers were molded to obtain a second replica to the final roughness analysis. Data were submitted to ANOVA-one way (p≤0.05). The results showed that there was no statistical difference between the dentifrices for color difference and surface roughness for all the studied conditions. It was possible to conclude that the whitening dentifrices used in this study were not able to alter the initial color of the teeth and did not cause changes in the surface roughness of enamel.
Research, Society and Development, Nov 12, 2020
A pandemia causada pelo Coronavírus (COVID-19) influenciou diretamente na forma de atendimentos d... more A pandemia causada pelo Coronavírus (COVID-19) influenciou diretamente na forma de atendimentos dos profissionais da saúde. Para o Cirurgião-dentista (CD), este momento significou mudanças necessárias em sua rotina de atendimento ao paciente. Dessa forma, esta revisão de literatura objetiva apresentar ao CD recomendações de prevenção para controlar e minimizar a infecção no tratamento odontológico. Foi realizado uma pesquisa de busca bibliográfica nas bases de dados PubMed, Google acadêmico e SciELO, e em cada sítio de busca foram utilizadas as palavras-chave "COVID-19", "dental Practice" e "dentistry". Foram selecionados artigos publicados no ano de 2020 em suas versões completas e gratuitas, nos idiomas inglês e português. Os achados na literatura destacam a importância do uso de equipamento de proteção individual, assim como a desinfecção de superfícies com álcool 70%, lavagem eficiente das mãos antes e após o atendimento, medição da temperatura corporal. É recomendado a triagem por telefone e/ou questionários clínicos. O COVID-19 é uma emergência em todo o mundo e surgiu com novos desafios aos profissionais. Assim, é importante que o CD esteja atualizado e treinado para realizar um atendimento odontológico íntegro com maior biossegurança.
Revista brasileira de odontologia, Jul 7, 2011
tológica da FO da UFRJ Resumo O tratamento de dentes não vitais, permanentes e jovens, requer uma... more tológica da FO da UFRJ Resumo O tratamento de dentes não vitais, permanentes e jovens, requer uma consideração especial devido à presença de ápices abertos e paredes dentinárias finas e divergentes. A apicificação é definida como um método para induzir uma barreira calcificada em uma raiz com um vértice aberto ou a continuação do desenvolvimento apical de uma raiz incompleta em dentes com necrose pulpar. A colocação de uma barreira apical com MTA em uma única visita tem sido uma alternativa ao uso do hidróxido de cálcio. A condensação não cirúrgica do agregado trióxido mineral (MTA) na extremidade apical, estabelece uma barreira artificial que permite preenchimento imediato, possibilitando menor tempo de tratamento, vedação apical satisfatória e indução da deposição de tecido duro perirradicular. Palavras-chave: agregado trióxido mineral (MTA); plug apical; apicificação.
Bioscience Journal
Objective: To evaluate the effect of ellagic acid on the inhibition of matrix metalloproteinase b... more Objective: To evaluate the effect of ellagic acid on the inhibition of matrix metalloproteinase by analyzing the quality of the adhesive interface with bond strength measures in periods of 24 hours and six months of storage. Method: 40 healthy human third molars were prepared with class I cavities (5x4x3mm). The teeth were divided into four experimental groups: Group 1- without application of ellagic acid and storage time of 24 hours; Group 2- with ellagic acid/24 hours; G3- without ellagic acid/six months; Group 4- with ellagic acid/six months. Then, the cavities were restored with Single Bond Universal adhesive and Z350 composite resin, with and without the previous application of ellagic acid. Subsequently, hourglass-shaped specimens were obtained and subjected to the bond strength (BS) test (n = 10) in a universal testing machine. The bond test was performed after 24 hours and six months of storage. For the standard evaluation (n = 3) the samples were infiltrated with silver nit...
Brazilian Journal of Development
The aim of this in vitro study was evaluated the amount of color change and degree of conversion ... more The aim of this in vitro study was evaluated the amount of color change and degree of conversion of the luting systems for ceramic veneer cementation. Forty-eight human incisors were randomly divided into six groups (n=8) according to the bonding procedure: RelyX Veneer/Single Bond 2; RelyX ARC/Single Bond 2; Filtek Z350 XT Flowable /Single Bond 2; Variolink Veneer/Tetric N-Bond; Variolink II/Tetric N-Bond; Tetric N-Flow/Tetric N-Bond. Ceramic veneers (IPS Empress Esthetic) were cemented using the different bonding procedures. Color differences of the ceramic surface after cementation and 300 h(150kJ/m2) of UV aging test, were examined with a colorimeter. Fourier transform infrared spectroscopy (FT-IR) was used to evaluate the degree of conversion for each luting system. Data were analyzed with one-way ANOVA and Tukey's test (α=0.05). All the luting systems demonstrated significant changes in color stability. The ΔE of the systems ranged from 6,11 to 9,33. Tetric N-Flow and Rely...
Journal of Clinical and Experimental Dentistry, 2021
Background: To evaluate the microtensile strength in the adhesive interface depending on the volu... more Background: To evaluate the microtensile strength in the adhesive interface depending on the volume of the composite resin used to restore class I cavities. Material and Methods: Forty-eight human third molars received a standardized class I cavity preparation and they were separated into six experimental groups: G1-single-bottle adhesive system; G2-bonding system with load; G3-single-bottle adhesive associated with low-viscosity composite resin; G4-loaded adhesive associated with low-viscosity composite; G5-resin-modified glass ionomer associated with single-bottle adhesive; and G6-resin-modified glass ionomer associated with loaded adhesive. All cavities were restored with a universal restorative composite. After completing the restorations, the samples were stored for seven days in a stove (37°C) and the microtensile bond strength was evaluated by producing slices and applying axial loading in an Instron universal testing machine at a speed of 0.5 mm/min. The thickness of the intermediate layer formed on the cavity floor to verify the relationship between the volume of restorative composite and the concentration of stresses in the buccal wall. With the data obtained in the microtensile strength test, an Analysis of Variance (ANOVA) was performed entirely at random.
International Journal of Case Reports and Images, 2020
Introduction: Lithium disilicate-based ceramics are extensively used in restorative dentistry, co... more Introduction: Lithium disilicate-based ceramics are extensively used in restorative dentistry, considering these materials combines adequate mechanical and optical properties, which, associated with dentin bonding by resin luting cement, makes them suitable for load-bearing posterior regions. This case report aims to describe the clinical and laboratory steps of a ceramic crown restoration. Case Report: A 30-year-old female patient had the second right maxillary premolar restored with lithium disilicate. The tooth was conditioned with phosphoric acid 37, followed by washing with water and drying with air jet. After this stage, the adhesive was applied to the surface and blasted with air. The prosthetic part was prepared with 10% hydrofluoric acid on the internal surface, washed with water, application of silane and adhesive. For definitive cementation, resinous cementing agent was used on the internal surface, the excess was removed and photopolymerization was performed. Conclusion:...
Revista Brasileira de Odontologia, 2018
Objetivo: realizar uma revisão integrativa da literatura sobre a indicação do clareamento dental ... more Objetivo: realizar uma revisão integrativa da literatura sobre a indicação do clareamento dental em pacientes fumantes, com o uso de peróxidos como agente clareador, em relação à segurança do tratamento, a efetividade, a sensibilidade dentária, seu efeito na estrutura dental e a longevidade do tratamento. Por fim, o efeito de cremes dentais clareadores em pacientes fumantes foi buscado. Material e Método: foram realizadas buscas nas bases de dados PubMed, LILACS e Scopus, utilizando as palavras-chave em associação: (Bleaching OR whitening or dental bleaching) AND (smoke OR smoker OR cigarrete), em inglês e português. Os critérios de inclusão foram: artigos publicados entre 2008-2018, estudos in vitro, clínicos e revisão de literatura. Resultados: 56 artigos foram encontrados. Após análise por título, 20 artigos foram selecionados. Após leitura dos resumos, 6 artigos foram excluídos. 14 artigos foram lidos na íntegra, 6 foram excluídos de acordo com os critérios de inclusão/ exclusão...
Polímeros
This study evaluated the influence of non-thermal argon plasma applied to dentin on the shear str... more This study evaluated the influence of non-thermal argon plasma applied to dentin on the shear strength of two adhesive systems. Ninety tooth fragments were embedded in epoxy resin and distributed into experimental groups (n=15): G1 and G4-adhesive systems applied according to the manufacturers' instructions; G2 and G5-dentin treated with nonthermal argon plasma for 30 seconds before hybridization; G3 and G6-dentin treated with non-thermal argon plasma for 30 seconds after hybridization. Cylinders were made with composite resin in the adhesive area, and the specimens were submitted to the shear strength test. Higher values were observed when applying the plasma treatment after hybridization (
Revista de Saúde Pública
OBJECTIVE: To assess the changes in stress levels, social behavior, dietary and parafunctional ha... more OBJECTIVE: To assess the changes in stress levels, social behavior, dietary and parafunctional habits, oral hygiene, among other conditions perceived by dental students in Brazil during the Covid-19 pandemic and evaluated the correlations between stress level and other variables. METHODS: An online questionnaire was developed and validated. Undergraduates enrolled in private and public dental schools were recruited by convenience sampling. Data were collected on the perceived changes regarding stress levels, financial and social characteristics, dietary habits, oral hygiene, health conditions, and parafunctional habits. Quantitative variables were expressed as absolute and relative frequencies. Wilcoxon test evaluated comparisons between perceived changes, and correlations between changes in stress levels and other variables were analyzed by Spearman correlation (α = 0.05). RESULTS: A total of 638 dental students, mean age of 22.95 ± 4.10 years, participated in the study. During the...
Brazilian Journal of Development
Introdução: A perda dentária é considerada um problema de saúde pública que gera impactos negativ... more Introdução: A perda dentária é considerada um problema de saúde pública que gera impactos negativos na qualidade de vida do indivíduo. Objetivo: Avaliar os fatores determinantes da perda dentária em usuários de um posto de saúde em Teresina - Piauí. Método: Foram entrevistados 384 usuários, de ambos os gêneros, com faixa etária de 15 a 60 anos de idade, através de um questionário. A amostra foi constituída por pessoas que haviam perdido pelo menos um elemento dentário. Resultados: Segundo o grau de escolaridade, predominaram os usuários com nível fundamental incompleto (47,92%), a faixa salarial mais prevalente foi entre 1 e 3 salários mínimos (68,23%) e aqueles que ganham menos de 1 salário mínimo (21,61%). Perguntou-se sobre a função dos dentes, a maioria (88,81%) respondeu triturar, mastigar, comer e morder alimentos. Em relação à forma de higienização bucal, 99,48% responderam que utilizavam escova e dentifrício, 45,31% responderam que utilizavam o fio dental, 69,53 % relataram ...
Research, Society and Development, 2022
Objective: To determine the incidence of the main risk factors and also the prevalence of non-car... more Objective: To determine the incidence of the main risk factors and also the prevalence of non-carious cervical lesions (NCCL) in relation to sex and age. Methodology: The literature search was conducted using the keywords and MeSH terms “Tooth Cervix”, “Non carious cervical lesions” and “Tooth Wear”, in the MEDLINE databases via PubMed and Scopus. Observational studies were included, which aimed to assess the relationship between sex, age and risk factors with cervical injuries. In addition, only studies in English, from the last five years, in their full version, were selected. Literature reviews, clinical cases, studies that did not include the main observation, studies that deviated from the topic and in other languages were excluded from the research. Results: 441 articles were identified, of which 17 were selected. There was no significant percentage difference between males and females, with percentages of 49% and 51%, respectively. Regarding the prevalence associated with the...
Introduction: The presence of white spots due to dental fluorosis can cause aesthetic discomfort,... more Introduction: The presence of white spots due to dental fluorosis can cause aesthetic discomfort, being one of the factors for a search for dental treatment. Objective: Report a clinical case in which the aesthetic complaint was solved through the association of the dental bleaching to the microabrasion technique. Case report: Male patient, 13 years, attended to the Integrated Clinic of the School of Dentistry of the Federal University of Rio de Janeiro, with fluorosis, mainly in the antero-superior teeth and aesthetic complaint. Initially, it was made an immediate bleaching with hydrogen peroxide at 35%, in 3 sessions of 15 minutes each, to soften the disparity of shades between tooth-stain. The result was insufficient and the dental microabrasion technique was adopted. A pumice paste was applied together with gel of phosphoric acid at 37% under relative isolation, in a total of 8 applications (1 minute each). At the end of each application, it was made an abundant water washing, m...
Research, Society and Development, 2020
Introdução: Os compósitos indiretos, ou cerômeros, possuem uma melhor resistência, um aumento mai... more Introdução: Os compósitos indiretos, ou cerômeros, possuem uma melhor resistência, um aumento maior de conversão de monômeros em polímeros devido a possibilidade de polimerização complementar, melhor acabamento e polimento, diminuição dos problemas relacionados a contração de polimerização quando comparadas as resinas compostas diretas. Contudo, dúvidas ainda existem quanto à utilização, indicação, e a longevidade dos cerômeros. Objetivo: O objetivo deste estudo foi realizar uma revisão da literatura com o intuito de analisar as evidências científicas existentes sobre os compósitos indiretos. Método: Foram utilizados artigos científicos em Português e em Inglês publicados nos últimos 20 anos, além de artigos referências no tema. As bases de consulta de dados foram Publicações Médicas (PUBMED), Scientific Eletronic Library Online (SCIELO) e livros complementares. Conclusão: Conforme o levantamento bibliográfico realizado, as resinas compostas indiretas possuem características que ind...
Revista brasileira de odontologia, 2014
O objetivo deste estudo foi avaliar a resistencia a microtracao de sistemas adesivos em funcao da... more O objetivo deste estudo foi avaliar a resistencia a microtracao de sistemas adesivos em funcao da presenca ou nao da camada de colageno e do tempo de armazenamento. Para tanto foram utilizados 24 terceiros molares restaurados utilizando-se diferentes sistemas adesivos, com ou sem tratamento previo com NaOCl, e armazenados por 24 horas e 12 meses. Os valores de resistencia foram submetidos a analise estatistica. O tratamento previo com NaOCl nao foi significativo em 24 horas. Entretanto, este tratamento manteve resultados satisfatorios de adesao apos 12 meses para todos os sistemas adesivos, com excecao apenas do Prime & Bond NT.
The aim of this study was to establish a caries risk profile for the population served in the Fam... more The aim of this study was to establish a caries risk profile for the population served in the Family Health Program in the city of Arraial do Cabo, Rio de Janeiro, comparing the Cariogram results when using DMF-T and ICDAS. 165 individuals divided into different age groups were evaluated by 1 examiner. The factors evaluated were caries experience, systemic diseases, diet (content and frequency), amount of plaque, fluoride program, salivary secretion and clinical evaluation of the evaluator. Was used the SPSS software, version 17.0, to perform the work and adopted the significance level of 1% and 5% probability (P <0.050). Chances in avoiding caries were observed according etiological factors evaluated. DMF-T/dmf-t and ICDAS predominant score was 3, DMF-T value was 9.44, and ICDAS was 11,9. The chances to prevent carious lesions showed a statistical difference at 1 %: diet content (p = 0.000) and its frequency (p = 0.000), presence of biofilm (p = 0.00), and fluorides (p = 0.000). When DMF-T was used to access caries, cariogram preventive measures proposed type 2 (high risk for caries-34,5 %). With ICDAS, 37.6 %, of the proposals where for the type 2 and 38.2 % for type 3. The Cariogram showed more risk factors for the occurrence of carious, concerning content of diet and presence of biofilm, proposing a more intensive preventive program when ICDAS was used.
Research, Society and Development, 2020
Introducao: A harmonia facial depende da disposicao, do alinhamento e da posicao dos dentes que, ... more Introducao: A harmonia facial depende da disposicao, do alinhamento e da posicao dos dentes que, quando se encontram em uma geometria apropriada, traduzem a expressao do que e belo. Um dos problemas encontrados e o desequilibrio na harmonia do sorriso causado por alteracoes promovidas por bordas incisais fraturadas, mau posicionamento dentario, diastemas, entre outros. Nesse sentido, as facetas pre-fabricadas de resina composta, como laminados pre-polimerizados de composito, surgiram no mercado para simplificar o procedimento restaurador e permitir a estetica e harmonia do sorriso. Objetivo: Descrever a utilizacao de facetas de resina pre-fabricadas na reabilitacao estetica anterior. Relato de caso: Paciente, sexo feminino, 46 anos, compareceu a clinica odontologica 42 anos, genero feminino, compareceu a Clinica Integrada da Faculdade de Odontologia da UFRJ queixando-se da estetica do seu sorriso. Ao exame clinico, observou-se manchamento e restauracao deficiente nos dente 11 e 21, ...
Research, Society and Development, 2020
The conoid teeth are anomalies of size and shape changing the harmony of smile, may affect self-e... more The conoid teeth are anomalies of size and shape changing the harmony of smile, may affect self-esteem of the patients. The aim of this case report was describe a reanatomization of conoid teeth in a patient with epilepsy and mental deficit. A sixteen- years-old boy presented to Department of Pediatric Dentistry and Orthodontics at the Federal University of Rio de Janeiro, the with chief complaint of poor dental aesthetic due to small teeth. During the anamnesis, the upper lateral incisors showed reduced size and conoid shape, diastemas and harmful smile harmony. Therefore, the clinical conduct was performed with the aim of restore the self-esteem and allows a harmonic smile, by means of reshape with indirect composite resin.
The use of direct composite resin for diastema closure has technique advantages, including that t... more The use of direct composite resin for diastema closure has technique advantages, including that the restorative procedure can be carried out in one appointment at a reasonable cost and without the removal of sound tooth structure. The use of a rubber dam for closing diastemas with composite resin is of paramount importance as it prevents moisture contamination and ensures increased gingival retraction compared to other techniques. This provides better access to the cervical area of the tooth, facilitating proper placement of resin to recreate the natural anatomical contours and contact point. Thus, there is a more natural adaptation of the restoration to the gingival tissue, avoiding a space between the papilla and the restored tooth. To illustrate the advantages of this technique, two diastema closure cases are presented using direct composite resin with rubber dam isolation.
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Papers by Gisele da Silveira Pereira