Comparison of Internal Adaptation of Bulk-fill and Increment-fill Resin Composite Materials

Alqudaihi, FS; Cook, N. Blaine; Diefenderfer, KE; Bottino, Marco C.; Platt, JA

doi:10.2341/17-269-l

Cited by 50 publications

(35 citation statements)

References 31 publications

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“…The impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resins INTRoDuCTIoN C omposite resins have been favored as restorative material over the years because they have advantageous properties for use in clinical practice, such as the coefficient of thermal-linear expansion, which is highly compatible with dental structure, higher compressive strength values, acceptable modulus of elasticity and hardness, as well as an excellent aesthetic result. [1] For the use of composite resins, the insertion was carried out in increments of 2mm at most, respecting cavity configuration factors, following the so-called incremental technique [2]. The main reasons for using this technique are to allow light penetration of the photopolymerizer throughout the depth of the layers, as well as to decrease polymerization contraction and associated stress [3].…”

Section: O R I G I N a L A R T I C L Ementioning

confidence: 99%

“…The main reasons for using this technique are to allow light penetration of the photopolymerizer throughout the depth of the layers, as well as to decrease polymerization contraction and associated stress [3]. In this way, the possibilities of any failure in marginal sealing, cusp deflection, microleakage and consequent appearance of secondary caries are reduced [2].…”

Section: O R I G I N a L A R T I C L Ementioning

confidence: 99%

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The impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resins

Araújo

Lemes

Pachito

et al. 2019

BDS

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Objective: This study compared different composites for color stability after exposure to at home and in-office bleaching gels. Material and Methods: Composite resin specimens (6mm diameterx2mm thickness) were manufactured according to the following groups (n=20): RC- Conventional; BF-Bulk Fill; RF-Flow; BFF-Bulk-Fill Flow. The surfaces were stained with coffee solution for 36hrs. A spectrophotometer was used to record the initial color (L*a*b*). Half of the specimens from each group underwent bleaching with 35% hydrogen peroxide (in-office) in three 45-minute applications. New color measurements were performed after 7, 14 and 21 days. The other half of the specimens underwent bleaching with 22% carbamide peroxide (at home) in 14 1-hour applications. Further color measurements were performed after 7 and 14 hours. For comparison between the color coordinates in different periods, ANOVA for repeated measures was applied (α=5%). The color variation (ΔE) was calculated for each group. Results: For in-office bleaching, there were no significant differences between the periods b* coordinate of the RF group, and for L* and b* coordinates of the BFF group. For at home bleaching the groups BF and BFF showed no differences for the L* coordinate. For the other coordinates, there was difference between the initial periods and after 14 days. The ΔE variation presented higher values for the at home bleaching groups. For both whiteners the bulk-fill resins presented the greatest color variations. Conclusions: Bulk Fill resins do not guarantee greater color stability than the other composite resins tested, including conventional flow resin. The conventional composite resin showed the lower ΔE.

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Section: O R I G I N a L A R T I C L Ementioning

confidence: 99%

Section: O R I G I N a L A R T I C L Ementioning

confidence: 99%

The impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resins

Araújo

Lemes

Pachito

et al. 2019

BDS

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“…[6][7][8][9] Entretanto a inserção de vários incrementos na restauração de cavidades extensas e profundas em dentes posteriores, além de consumir mais tempo clínico, aumenta a probabilidade de contaminação durante o procedimento, [10][11] de incorporação de bolhas no interior da RC 12 e de detritos entre as camadas de RC. 13 Assim, para simplificar a técnica restauradora e diminuir o tempo clínico, surgiram as RC do tipo bulk fill (BF) ou de preenchimento único. [14][15][16] Maior profundidade de polimerização, menor contração e menor tensão na interface dente-restauração 17,18 sustentam a inserção das RCBF em incremento único de 4 a 5 mm de espessura para a restauração de dentes posteriores.…”

Section: Introductionunclassified

Efeito da técnica de inserção e do tempo de fotoativação na dureza de resinas compostas bulk fill

et al. 2020

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Objetivos: Avaliar o efeito da técnica de inserção e do tempo de fotoativação na dureza Vickers de resinas compostas bulk fill (RCBF). Materiais e método: RCBF de alta viscosidade Opus Bulk Fill (OBF) e de baixa viscosidade Opus Bulk Fill Flow (OBFF) foram inseridas em matrizes cilíndricas com altura e diâmetro interno de 4 mm, e divididas em seis grupos (G), de acordo com a técnica de inserção (I1 – incremento único de 4 mm e I2 – dois incrementos de 2 mm) e do tempo de fotoativação de cada incremento com irradiância de 1000 mW/cm2 (T1 – 20 segundos e T2 – 40 segundos): G1 – OBFI1T1, G2 – OBFI2T1, G3 – OBFI1T2, G4 – OBFI2T2, G5 – OBFF+OBFI2T1 e G6 – OBFF+OBFI2T2. A dureza foi avaliada na superfície topo e base das amostras. ANOVA dois critérios seguido de pós-teste de Tukey foram utilizados em nível de significância de 5%. Resultados: Não houve diferença na dureza da superfície topo das amostras, independentemente da técnica de inserção e do tempo de fotoativação. Entretanto, na superfície base, houve diferença entre as técnicas de inserção e os tempos de fotoativação, exceto entre G3 e G4. Todas as amostras apresentaram redução significativa de dureza na base em relação ao topo. Conclusão: Pode-se concluir que a fotoativação com menor tempo de exposição deve ser considerada com cautela, pois resultou na redução da dureza na área mais distante da fonte emissora da luz. OBFF apresentou dureza menor que OBF, independentemente do tempo de fotoativação.

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“…The polymerization shrinkage is an inherent characteristic of the resin composites (Braga et al, 2005;Rizzante et al, 2019), which depends on a number of factors including the material composition, the degree of conversion, the volume, and the elastic modulus (Braga et al, 2005;Braga et al, 2012;Benetti et al, 2014;Kim and Park, 2014;Van Dijken and Lindberg, 2015;Ferracane and Hilton, 2016;Han et al, 2019). The fact is that stress cannot be considered an isolated factor when it comes to the marginal adaptation of resin composite restorations; other factors, such as thermal changes and occlusal loads (Kim and Park, 2014;Van Dijken and Lindberg, 2015), placement of resin composite (Furness et al, 2014;Yoshimine et al, 2015;Correia et al, 2018;Alqudaihi et al, 2019), curing technique (dos Santos et al, 2007;Gamarra et al, 2018), cavity size and geometry (Braga et al, 2006;Borges et al, 2014;Han et al, 2016;Han et al, 2019) also may have a significant effect.…”

Section: Introductionmentioning

confidence: 99%

“…There are several reports on marginal gap formation and factors affecting its development (Versluis et al, 1996;Peutzfeldt and Asmussen, 2004;Braga et al, 2006;dos Santos et al, 2007;Furness et al, 2014;Benetti et al, 2015;Alqudaihi et al, 2019;Han et al, 2019). Different techniques and introducing of new polymeric systems have not been effective in eliminating the shrinkage stress and, thus, in reducing the gap formation (Versluis et al, 1996;Yoshimine et al, 2015;Correia et al, 2018;Gamarra et al, 2018;Han et al, 2019;Alqudaihi et al, 2019;He et al, 2019). However, studies suggest that marginal bevels can reduce or eliminate the microleakage and gaps associated with resin composite restorations (Opdam et al, 1998;Coelho-de-Souza et al, 2008;Coelho-de-Souza et al, 2010;Borges et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations

Correia

Pereira

Bresciani

et al. 2019

Journal of the Mechanical Behavior of Biomedical Materials

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The study aimed to evaluate the influence of cavosurface angle on stress concentration and gap formation in class V restorations. Cylindrical cavities 3 mm in diameter were prepared in forty-five bovine incisors, changing only the angle of the bur in relation to the flat surface of the tooth. The cavities maintained the same volume (17.67 mm³). The samples were divided according to the cavosurface angle, into three groups (n=15): 90º, 120º, 135º. After adhesive application (Futurabond U, VOCO), the cavity was filled with bulk placement of a resin composite (GrandioSO, VOCO). The teeth were analyzed with stereomicroscopy. Data of marginal gap formation were statistically analyzed with a oneway analysis of variance (ANOVA) followed by Tukey tests (significance level: α=0.05).Finite element analysis (FEA) was used to study residual stress in these geometries and to correlate those stresses with experimentally measured gap formation. The elastic modulus and polymerization shrinkage were determined for FEA. Residual shrinkage stresses were expressed in maximum principal stress (MPS). There was a significant difference in the gap formation among the groups (p=0.001). A significantly lower marginal gap formation was found for 120° and 135° angles, with no significant difference between them. The cavosurface angle at 90º caused substantially higher stresses, in the restoration interface, with greater marginal gap. For the 120° and 135° angles, the stress concentrations were smaller and were located in the dental structure.The cavosurface angle influenced the marginal gap formation and stress concentration.

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Comparison of Internal Adaptation of Bulk-fill and Increment-fill Resin Composite Materials

Cited by 50 publications

References 31 publications

The impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resins

The impact of at home and in-office bleaching agents on the color stability of bulk-fill composite resins

Efeito da técnica de inserção e do tempo de fotoativação na dureza de resinas compostas bulk fill

Influence of cavosurface angle on the stress concentration and gaps formation in class V resin composite restorations

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