The Influence of Elastic Modulus of Base Material on the Marginal Adaptation of Direct Composite Restoration

Kim, Do-Hyun; Park, Sungho

doi:10.2341/09-372-l

Cited by 26 publications

(21 citation statements)

References 18 publications

(18 reference statements)

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“…7 The main reason for failure in the glass ionomer (GIC) based composite restorations was a fracture of the composites, whereas Kwon et al reported that the use of RMGIC as a base material can reduce a marginal defect in an overlying composite restoration when the elastic modulus of RMGIC was high. 8 Hayashi and Wilson reported that marginal deterioration and cavo-marginal discoloration were significantly correlated with the clinical failure rate at the 5-year review. 9 Souza-Junior et al evaluated marginal and internal adaptation of restorations, in which internal adaptation were accessed by cutting the samples after marginal adaptations had been measured first.…”

Section: Introductionmentioning

confidence: 98%

Evaluation of internal adaptation of dental adhesive restorations using micro-CT

Kwon

Park

2012

Restor Dent Endod

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Objectives:The internal adaptation of composite restorations with or without resin modified glass ionomer cement (RMGIC) was analyzed non-destructively using Microcomputed tomography (micro-CT). Materials and Methods: Thirty intact human teeth were used. The specimens were divided into 3 groups. In the control group, the cavities were etched with 10% phosphoric acid for 15 sec. Composite resin was filled into the cavity without adhesive. In group 1, light cured glass ionomer cement (GIC, Fuji II LC, GC) was applied as a base. The cavities were then etched, bonded, light cured and filled with composites. In group 2, the cavities were then etched, bonded, light cured and filled with composites without base application. They were immersed in a 25% silver nitrate solution. Micro-CT was performed before and after mechanical loading. One-way ANOVA with Duncan analysis was used to compare the internal adaptation between the groups before or after loading. A paired t-test was used to compare internal adaptation before and after mechanical loading. All statistical inferences were made within the 95% confidence interval. Results: The silver nitrate solution successfully penetrated into the dentinal tubules from the pulp spaces, and infiltrated into the gap between restoration and pulpal floor. Group 2 showed a lower adaptation than the control group and group 1 (p < 0.05). There was no significant difference between the control group and group 1. For all groups, there was a significant difference between before and after mechanical loading (p < 0.05). Conclusions: The internal adaptation before and after loading was better when composites were bonded to tooth using adhesive than composites based with RMGIC. (Restor Dent Endod 2012;37(1):41-49)

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Section: Introductionmentioning

confidence: 98%

Evaluation of internal adaptation of dental adhesive restorations using micro-CT

Kwon

Park

2012

Restor Dent Endod

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“…Moreover, flowable composites are readily workable and adaptable to cavity walls[6] and their use can reduce marginal defects in restorations. [78]…”

Section: Introductionmentioning

confidence: 99%

Microleakage at enamel and dentin margins with a bulk fills flowable resin

et al. 2014

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Objective:The aim of this in vitro study was to evaluate the marginal sealing ability of a bulk fill flowable resin composite on both enamel and dentin substrates.Materials and Methods:48 non-carious molars were selected and four Class-V cavities were prepared at the CEJ of each sample. Cavities were filled with Venus Diamond (Heraeus Kulzer); Venus Diamond Flow (Heraeus Kulzer) and Surefil SDR (Dentsply). Samples were divided into two groups: First group samples were immersed in a methylene blue solution for 30 min at 25°C. Second group samples were artificially aged and then treated with methylene blue. Samples were sectioned in the center of the restoration and observed with a 40x stereomicroscope, and the percentage of cavity infiltration was calculated.Results:Results were analyzed statistically by ANOVA (P < 0.05). The amount of infiltration was significantly lower for the enamel substrate compared with dentin (P = 0.0001) and in samples immediately immersed in methylene blue compared with those that were artificially aged (P = 0.011). The interaction between the composite material and the marginal substrate significantly affected dye penetration (P = 0.006).Conclusions:Bulk fill flowable resins provided significantly better marginal seal in dentin, both before and after artificial ageing. Nanohybrid resin composites and bulk fill flowable resins showed similar microleakage values at enamel margins. Bulk fills flowable resins provided significantly better marginal seal in dentin, both before and after artificial ageing. Nanohybrid resin composites and bulk fill flowable resins showed similar microleakage values at enamel margins.

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“…However, few studies have been conducted to assess the influence of the flowable composite thickness and restorative technique. Different liner thicknesses have been described in the literature: 0.2–0.5 mm, 0.5 mm, 0.5–1 mm, 1 mm, and 1.4 mm thickness . Other studies have not described the thickness of flowable composite, and one study did not standardize the thickness .…”

Section: Introductionmentioning

confidence: 99%

Influence of flowable composite and restorative technique on microleakage of class II restorations

Hernandes

Catelan

Soares

et al. 2013

J of Invest & Clin Dent

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The Influence of Elastic Modulus of Base Material on the Marginal Adaptation of Direct Composite Restoration

Cited by 26 publications

References 18 publications

Evaluation of internal adaptation of dental adhesive restorations using micro-CT

Evaluation of internal adaptation of dental adhesive restorations using micro-CT

Microleakage at enamel and dentin margins with a bulk fills flowable resin

Influence of flowable composite and restorative technique on microleakage of class II restorations

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