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  • 1
    Online Resource
    Online Resource
    Bond strength of universal adhesive applied to dry and wet dentin
    Universidade Estadual de Campinas ; 2020
    In:  Brazilian Journal of Oral Sciences Vol. 19 ( 2020-03-09), p. e201662-
    Details
    In: Brazilian Journal of Oral Sciences, Universidade Estadual de Campinas, Vol. 19 ( 2020-03-09), p. e201662-
    Abstract: Aim: This study evaluated the influence of dentin wettability on the immediate and extended microtensile bond strength (mTBS) of a universal adhesive system used in the etch-and-rinse strategy. Methods: Twenty human third molars were selected and divided into four groups according to the adhesive system and dentin wettability. The mTBS values of each group were registered 24 h and one year after adhesive system application and resin composite block build-up (n=30). Data were analyzed by the t-test (p 〈 0.05). Results: When both adhesive systems were compared, there was no statistically significant difference when they were applied following wet bonding (p 〉 0.05). However, the dry bonding reduced μTBS values of the Adper Single Bond 2 adhesive (p 〈 0.05). Regarding storage time, both groups presented similar μTBS values at 24 h and one year (p 〉 0.05). Conclusions: Therefore, the Scotchbond Universal Adhesive can be applied to dry or wet dentin without compromising the etch-and-rinse bonding quality and the durability of the restorations.
    Type of Medium: Online Resource
    ISSN: 1677-3225
    URL: Article
    DOI: 10.20396/bjos.v19i0.8658220
    Language: Unknown
    Publisher: Universidade Estadual de Campinas
    Publication Date: 2020
    detail.hit.zdb_id: 2102668-3
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  • 2
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    Online Resource
    Evaluation of Single-Shade Composite Resin Color Matching on Extracted Human Teeth
    Hindawi Limited ; 2023
    In:  The Scientific World Journal Vol. 2023 ( 2023-6-26), p. 1-8
    Details
    In: The Scientific World Journal, Hindawi Limited, Vol. 2023 ( 2023-6-26), p. 1-8
    Abstract: Introduction. Universal single-shade composite resins are characterized by a property that enables the creation of restorations that mimic tooth structure to the extent possible with fewer shades of color. Objectives. This study aimed to instrumentally and visually evaluate the color correspondence of two single-shade composite resins in extracted human teeth multishade composite resins. Methods. Upper central incisors and upper and/or lower molars with intact buccal surfaces were selected. The study consisted of a control group (n = 20): Z250 XT (3M ESPE) (G1) multishade composite resin in colors A1 to A4, and a test group (n = 20) divided further into two equal groups, consisting of single-shade composite resin Omnichroma (Tokuyama Dental) (G2) and single-shade composite resin Vittra APS Unique from (FGM) (G3). Instrumental evaluation was performed using a spectrophotometer, and visual evaluation was performed by three observers. Descriptive measurements related to the differences in color obtained through instrumental means were analyzed using mean and standard deviation, wherein the means were compared using ANOVA, applying the Bonferroni post hoc test. Results. A statistically significant difference was observed among the groups (G1, G2, and G3) (ANOVA: p 〈 0.001 ). For the visual assessment, regardless of the assessment group, 77.49% of the teeth were within the acceptable color-match classification, with the single-shade resins showing better correspondence than the multishade resins. Conclusion. Single-shade composite resins showed different color-matching results when compared to multishade resins, both in spectrophotometry and visual evaluations. Clinical Significance. Single-shade composite resins simplify the shade-selection process and are promising materials for use in dental practice.
    Type of Medium: Online Resource
    ISSN: 1537-744X , 2356-6140
    URL: Article
    DOI: 10.1155/2023/4376545
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2023
    detail.hit.zdb_id: 2075968-X
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  • 3
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    Resistência de união de compósitos do tipo Bulk Fill: análise in vitro
    FapUNIFESP (SciELO) ; 2017
    In:  Revista de Odontologia da UNESP Vol. 46, No. 2 ( 2017-03-16), p. 77-81
    Details
    In: Revista de Odontologia da UNESP, FapUNIFESP (SciELO), Vol. 46, No. 2 ( 2017-03-16), p. 77-81
    Abstract: Abstract Introduction The class of the Bulk Fill composites has gotten popularity with the promise of been cured effectively of layers up to 4 mm, a fact with contrasts with the 2 mm required for the convencional composites for maintance of the restoration’s adhesion. Objective The aim of this study was evaluate the microtensile bond strength to dentine of restorations made with Bulk Fill composites. Material and method 15 thirds molars teeth were utilized, whose occlusal layer was cut, exposing the teeth dentine. The teeth were divided in three groups according to the type of restoration materials. All groups were treated with the adhesive system Adper Single Bond 2. Subsequently they were cut in sticks with approximately 1 mm wide, 1 mm depth and 8 mm high, that were fixated at a universal microtensile maching. 10 sticks of each tooth were used in the experiment totaling 50 sticks per group. The data of bond strength microtensile were expressed in MPa. The failures mode was evaluated at an optical microscope. The Data were statistically analyzed through ANOVA and Tukey test (p 〈 0.05). Result The three composites studied differed statistically among themselves (p 〈 0.000). The Bulk Fill composites had microtensile bond strength similar and higher than the convencional (p 〈 0.000). The pattern failure mode found in all groups studied was the mixed. Conclusion The Bulk Fill composites showed the highest values of microtensile bond strength with the restorative technique used.
    Type of Medium: Online Resource
    ISSN: 1807-2577
    URL: Article
    DOI: 10.1590/1807-2577.15216
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2017
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  • 4
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    Online Resource
    The effect of a bleaching agent on the pigment removal and the bond strength of bulk-fill resin composites: an in vitro study
    FapUNIFESP (SciELO) ; 2018
    In:  Revista de Odontologia da UNESP Vol. 47, No. 5 ( 2018-10), p. 298-304
    Details
    In: Revista de Odontologia da UNESP, FapUNIFESP (SciELO), Vol. 47, No. 5 ( 2018-10), p. 298-304
    Abstract: Resumo Introdução Em busca de simplificar a técnica, reduzir o tempo requerido para as restaurações adesivas, resinas compostas bulk-fill (RCBF) estão sendo desenvolvidas para serem aplicadas em incrementos com espessura de até 4 mm. Objetivo Avaliar a alteração de cor (ΔE) e resistência de união (μTBS) de RCBF a dentina após imersão em bebidas e aplicação de um sistema clareador. Método Foram utilizados 45 dentes molares humanos que foram distribuídos aleatoriamente em três grupos de acordo com o material restaurador (n=15): Filtek Bulk Fill, Tetric N Ceram Bulk Fill e Filtek Z100. Os dentes restaurados foram imersos em café, vinho e água destilada (n=5) durante 72 horas. Os parâmetros de cor foram mensurados utilizando um espectrofotômetro, tendo como base o CIE L*a*b*, antes e após o manchamento e aplicação dos agentes clareadores. Consequentemente, os dentes foram seccionados para a obtenção de espécimes para o teste de microtração. Os valores de ΔE foram analisados aplicando os testes de Kruskal-Wallis e Wilcoxon e os valores de μTBS foram analisados aplicando ANOVA e o teste de Bonferroni (p 〈 0,05). Resultado Não houve diferença significante nos valores de ∆E quando as RCBFs foram comparadas a resina composta convencional (RCC) na maioria dos grupos experimentais. Os valores de ∆E não apresentaram diferença estatística antes e após a aplicação do agente clareador para todas as resinas testadas. As RCBFs demonstraram maiores valores de μTBS comparado a RCC após exposição a água destilada, vinho e agente clareador. Conclusão As RCBFs demonstraram uma similar estabilidade de cor quando comparado a RCC. As RCBFs apresentaram maior resistência de união a dentina que a RCC na maioria das condições avaliadas. O agente clareador não foi efetivo no clareamento dos dentes restaurados.
    Type of Medium: Online Resource
    ISSN: 1807-2577 , 0101-1774
    URL: Article
    DOI: 10.1590/1807-2577.08818
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2018
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  • 5
    Online Resource
    Online Resource
    Bond strength of bulk-fill resin composites : the effect of cavity preparation and aging
    Universidade Estadual de Campinas ; 2022
    In:  Brazilian Journal of Oral Sciences Vol. 21 ( 2022-03-23), p. e225454-
    Details
    In: Brazilian Journal of Oral Sciences, Universidade Estadual de Campinas, Vol. 21 ( 2022-03-23), p. e225454-
    Abstract:  Aim: Evaluating the resin-dentin bond strength of Class II conventional and bulk-fill composite restorations, using different cavity sizes before and after aging. Methods: Seventy-five human molars were distributed into groups according to the buccolingual width of the cavities, conservative (n=25) and extended (n=50). They were divided according to the restorative material: conventional (Z100/control group) or bulk-fill resin composites (Filtek Bulk Fill/FBF; Tetric N Ceram Bulk Fill/TNCBF; Filtek Bulk Fill Flow/FBFF; Surefill SDR flow/SDR). The restored teeth were sectioned on sticks (n=50 per restorative materials + width cavities group), half were stored in Water/Ethanol 75% for 30 days and the other half were submitted to the immediate microtensile bond strength (μTBS) test. Data were analyzed applying the Three-Way Analysis of Variance (ANOVA), Bonferroni test, test t, and Weibull analyses (p 〈 0.05). Results: SDR and FBF presented lower μTBS values for extended preparation when compared to the conservative preparation, before aging. After aging, only for the FBFF, a decrease in the μTBS values was observed. Comparing the μTBS values, before and after aging, the SDR demonstrated lower μTBS values after aging when the conservative cavity was used. A decrease in the μTBS values was observed for the Z100, the FBF and, the FBFF, after aging, when the extended cavity was used. Conclusion: The effect of cavity preparation and aging on the resin-dentin of Class II is material dependent. Most of the bulk-fill resin composites evaluated presented a similar performance to the conventional resin composites for all the conditions of this study.
    Type of Medium: Online Resource
    ISSN: 1677-3225
    URL: Article
    DOI: 10.20396/bjos.v21i00.8665454
    Language: Unknown
    Publisher: Universidade Estadual de Campinas
    Publication Date: 2022
    detail.hit.zdb_id: 2102668-3
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