8 results on '"Márcia Regina Cabral"'
Search Results
2. Antimicrobial photodynamic chemotherapy mediated by PapaMBlue on chronic periodontal disease: Study protocol for a randomized, blind, controlled trial
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Anselmo, Giuliana Giovinazzo, Tortamano, Ana Carolina Alves Camargo, Gonçalves, Marcela Letícia Leal, Leal-Rossi, Adriana, Godoy-Miranda, Bianca Aparecida, Oliveira, Márcia Regina Cabral, Oliveira, Pedro Henrique Cabral, Alves, Carol Brandt, Bussadori, Sandra Kalil, and Prates, Renato Araujo
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- 2020
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3. In VitroEvaluation of the Effectiveness of Dental Bleaching with Carbamide Peroxide and Violet Light
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Oliveira, Pedro Henrique Cabral, primary, Oliveira, Luiz Henrique Cabral, additional, Oliveira, Márcia Regina Cabral, additional, Moriyama, Caroline, additional, de Paula, Eloisa, additional, de Vito Moraes, André Guaraci, additional, De Melo Deanna, Alessandro, additional, Zanin, Fátima Antonia Aparecida, additional, Gomes, Andréa Oliver, additional, Brugnera Junior, Aldo, additional, and Bussadori, Sandra Kalil, additional
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- 2021
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4. Effect of Surface Treatment with CO2 Laser on Bond Strength in Composite Resin Restorations
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Ricardo Sgura, André Guaraci de Vito Moraes, Sandra Kalil Bussadori, Luiz Henrique Cabral Oliveira, Paulo Francisco Cesar, Aldo Brugnera Junior, Pedro H. Oliveira, Marcela Leticia Leal Gonçalves, and Márcia Regina Cabral
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Co2 laser ,Materials science ,Bond strength ,medicine.medical_treatment ,Composite number ,Resin restorations ,technology, industry, and agriculture ,Biomedical Engineering ,Laser ,law.invention ,law ,medicine ,Radiology, Nuclear Medicine and imaging ,Adhesive ,Composite material ,Dental restoration - Abstract
Objective: Evaluate the bond strength of repairs made on composite resin following the treatment of the surface of the flaw with different bonding agents and/or CO2 laser. Background: The ...
- Published
- 2019
5. Effect of Surface Treatment with CO
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Pedro Henrique Cabral, Oliveira, Luiz Henrique Cabral, Oliveira, Márcia Regina, Cabral, André Guaraci, De Vito Moraes, Ricardo, Sgura, Paulo Francisco, Cesar, Marcela Leticia Leal, Gonçalves, Aldo, Brugnera Junior, and Sandra Kalil, Bussadori
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Dental Stress Analysis ,Dental Materials ,Surface Properties ,Dentin-Bonding Agents ,Dental Etching ,Materials Testing ,Dental Bonding ,Lasers, Gas ,Stress, Mechanical ,Carbon Dioxide ,Dental Enamel ,Shear Strength ,Composite Resins - Published
- 2019
6. Avaliação da microdureza do esmalte dental bovino irradiado com laser ultrapulsado de CO2 e uso de diferentes fluoretos em lesão de cárie incipiente
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Oliveira, Márcia Regina Cabral, Horliana, Anna Carolina Ratto Tempestini, Chavantes, Maria Cristina, and Nava, Ricardo Scarparo
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esmalte dentário ,cárie dentária ,fluoretos ,fluorides ,CIENCIAS DA SAUDE ,dureza ,dental caries ,dental enamel ,hardness ,laser - Abstract
Submitted by Nadir Basilio (nadirsb@uninove.br) on 2022-04-11T18:44:08Z No. of bitstreams: 1 Marcia Regina Cabral Oliveira.pdf: 1471968 bytes, checksum: c016e7c12830c070642e950a63dcea15 (MD5) Made available in DSpace on 2022-04-11T18:44:08Z (GMT). No. of bitstreams: 1 Marcia Regina Cabral Oliveira.pdf: 1471968 bytes, checksum: c016e7c12830c070642e950a63dcea15 (MD5) Previous issue date: 2016-12-16 Currently, CO2 laser systems are being used to prevent caries by making the enamel acider resistant. As doses for its use are not well established in the literature, the laser use for treatment of incipient lesions has been poorly reported. The aplication of CO2 laser can promote a reorganization of enamel prisms and make the substrate more responsive to fluoride. Fluoride therapy is already well established in the literature; however extensive use protocols require several sessions. Use of laser and fluoride can catalyze remineralization or promote more efficient remineralization. The objective of this study was to evaluate, in vitro, the microhardness values of different forms of fluoride topical application on the artificial caries in bovine dental enamel irradiated with a new parameter of CO2 ultrapulsed laser. The specimens were prepared for a formation artificial caries lesion, and treatment with pH. Our experimental groups applied an ultra-pulsed laser wavelength 10.600nm, pulse interval of 0.99s, pulse rate of 0,005s. (G1) 2% fluoride gel and laser (G2), 1.23% acidulated fluorine phosphate gel and laser (G3) 1.23% fluoride mousse and laser (G4) varnish fluoride and laser (Duraphat 5%) (G5), higid- laser and remineralizing solution (G6), higid- laser and water (G7). The enamel microhardness (KNH) were evaluated with Knoop penetration and 0.098N load, through 5 readings in different areas of the same surface. The analysis were performed after 7, 14, 21, 28 days and its stability after one week of the end of procedures. A two-way (ANOVA) and Tukey were performed. Results described (KNH) after one week of the end of treatment were G1-104.8 (8.3); G2-84.5 (7); G3-99 (4.8); G4-137 (9); G5-214.7 (5); G6-236,16,2; G7-236.1 (9). It can be concluded that the new laser dosimetry methods associated to the use of fluoride or not were able to increase the (MHK) values. Atualmente, os lasers de CO2 estão sendo utilizados para prevenção de cárie por tornar o esmalte mais ácido resistente, contudo as doses para o seu uso não estão bem consolidadas na literatura e o uso do laser para tratamento de lesão incipiente tem sido pouco reportado. O uso do laser de CO2 pode promover a reorganização dos prismas de esmalte e deixar o substrato mais responsivo ao flúor. A terapia com fluoretos já está bem estabelecida na literatura, entretanto os protocolos de uso são extensos demandando várias sessões, o que dificulta a adesão do paciente ao tratamento. A associação do uso do laser e o flúor pode catalisar a remineralização ou promover uma remineralização mais eficiente. O objetivo deste estudo foi avaliar, in vitro, os valores de microdureza de diferentes formas de aplicação tópica de flúor sobre lesão de cárie artificial em esmalte dental bovino irradiado com um novo parâmetro de laser de CO2. Os espécimes foram preparados para a formação da lesão de cárie artificial, com ciclagem de pH. Foram divididos aleatoriamente em 7 grupos (n=10): tratados somente com laser (G1), gel de flúor neutro a 2% + laser (G2), gel flúor fosfato acidulado a 1,23% + laser (G3), mousse de flúor acidulado 1,23% + laser (G4), verniz de flúor + laser (G5), hígido- laser + solução remineralizadora (G6), hígido - laser + água (G7). Nos grupos experimentais foram utilizados o laser ultra pulsátil com comprimento de onda de 10.600nm, intervalo de pulso de 0,99s, tempo de pulso de 0,005s e frequência de 1Hz. A microdureza (KNH) do esmalte foi avaliada com penetrador Knoop e carga de 0,098N, por meio de 5 leituras em diferentes áreas da mesma superfície. A análise foi realizada após 7, 14, 21, 28 dias e sua estabilidade após uma semana do término. Realizou-se a análise de variâncias Two-way (ANOVA) e Tukey. Os resultados de (KNH) uma semana após o termino do tratamento foram G1- 104,88,3; G2-84,57; G3-994,8; G4-1379; G5-214,75; G6-236,16,2; G7- 236,1.9.Pode-se concluir que os novos parâmetros dosimétricos propostos associados ou não ao flúor foram capazes de elevar os valores de (MKH).
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- 2016
7. Evaluation of Different Dentifrice Compositions for Increasing the Hardness of Demineralized Enamel: An in Vitro Study
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Pedro Henrique Cabral Oliveira, Marcia Regina Cabral Oliveira, Luiz Henrique Cabral Oliveira, Ravana Angelini Sfalcin, Marcelo Mendes Pinto, Ellen Perin Rosa, Alessandro Melo Deana, Anna Carolina Ratto Tempestini Horliana, Paulo Francisco César, and Sandra Kalil Bussadori
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arginine ,fluoride ,dental enamel ,dental caries ,demineralization ,tooth remineralization ,Dentistry ,RK1-715 - Abstract
This study aimed to evaluate microhardness of a dentifrice containing fluoride and arginine compared to a positive control (fluoride only) and a negative control (no fluoride) on sound and demineralized bovine enamel surfaces. Specimens were randomly assigned to different treatments that included daily pH cycling and brushing three times a day with one of the following dentifrices (n = 8): Neutraçucar (arginine and fluoride), Colgate Total 12 (fluoride) and My First Colgate (no fluoride). Enamel carious lesions were artificially created one week before the beginning of these treatments (demineralized bovine enamel (DE) groups). The same groups were also tested in sound enamel (sound bovine enamel (SE) groups). Microhardness was measured at baseline and after one, two, and five weeks of treatment using a Knoop indenter. Statistical analysis involved two-way Analysis of Variance (ANOVA) and Tukey’s test. After five weeks, both Total 12 and Neutraçucar had increased the microhardness of DE specimens (p < 0.05). Only Neutraçucar had increased the microhardness of the sound enamel after five weeks of treatment. Thus, it could be concluded that arginine-based dentifrices increase the microhardness of sound and demineralized bovine enamel surfaces.
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- 2019
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8. In Vitro Evaluation of the Effectiveness of Dental Bleaching with Carbamide Peroxide and Violet Light.
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Oliveira PHC, Oliveira LHC, Oliveira MRC, Moriyama C, de Paula E, de Vito Moraes AG, De Melo Deanna A, Zanin FAA, Gomes AO, Brugnera Junior A, and Bussadori SK
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- Animals, Carbamide Peroxide, Cattle, Color, Tooth Bleaching, Tooth Bleaching Agents pharmacology
- Abstract
Objective: The aim of the current study was to use the CIELab system to evaluate the performance of the whitening treatment involving violet light-emitting diode (LED) combined with a home 10% and 22% carbamide peroxide dental bleaching technique on dental enamel. Methods: Fifty blocks of bovine dental enamel were divided into five groups: control group (control), receiving only LED irradiation; Whitening 10%, receiving 10% carbamide peroxide treatment; Whitening 10%+VL, receiving 10% carbamide peroxide treatment combined with LED irradiation; Whitening 22%, receiving 22% carbamide peroxide treatment; and Whitening 22%+VL, receiving 22% carbamide peroxide treatment combined with violet LED irradiation. Color tests were performed before the protocols, after 1 week and after 2 weeks of treatment by using a spectrophotometer and the CIELab parameters: L*, (a*) and (b*). The Whitening 10%, Whitening 10%+VL, Whitening 22% and Whitening 22%+VL groups were submitted to 10% and 22% carbamide peroxide 8 h per day for 14 days, whereas the Control was only stored in artificial saliva. For irradiation in the Control, Whitening 10%+VL, and Whitening 22%+VL groups, we used violet LED at a wavelength of 405-410 nm activated for 60 permanent seconds and 30 sec of pause once per week. As all data exhibited normal distribution, the comparisons were performed by using two-way repeated-measures analysis of variance. A post hoc t -test was employed, followed by the Ryan-Holm stepdown Bonferroni procedure. Results: After 1 week, the Whitening 22%+VL group differed significantly from all other groups in relation to hue, while no difference was found between the remaining groups ( p < 0.05). Analyzing lightness, the Whitening 22%+VL and Whiteness10%+VL groups differed from the other groups ( p > 0.05). In the 2nd week, the Whitening 22%+VL groups differed significantly from all other groups ( p < 0.05) in hue, chroma, and lightness. The comparative analysis of bleaching times within the same group revealed significant differences in the Whitening 22%+VL group between baseline and week 1, baseline and week 2, as well as weeks 1 and 2 in terms of hue ( p > 0.05). In the Whitening 22%+VL group, significant differences ( p < 0.05) were found between baseline and week 2 as well as between weeks 1 and 2 in chroma ( p > 0.05). In the Whitening 22%+VL group, statistically significant differences ( p < 0.05) were found between baseline and week 1, baseline and week 2, as well as between weeks 1 and 2 in lightness. In the Whitening 10%+VL group, statistically significant differences ( p < 0.05) were found between baseline and week 1, between baseline and week 2, as well as between weeks 1 and 2 in lightness. Conclusions: Tooth whitening treatment involving 10% and 22% carbamide peroxide combined with violet light promoted changes in the three axes of color (ΔH, ΔC, and ΔL) of the specimens evaluated. The use of the gel bleach alone was more efficient when the higher concentration was used. When violet light was combined with the gel, the lower concentration was more efficient.
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- 2021
- Full Text
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