Effect of the Curing Method and Composite Volume on Marginal and Internal Adaptation of Composite Restoratives

Souza-Junior, Eduardo José; Souza-Régis, Marcos Ribeiro de; Alonso, Roberta Caroline Bruschi; Freitas, Anderson Pinheiro de; Sinhoreti, Mário Alexandre Coelho; Cunha, Leonardo Gonçalves

doi:10.2341/10-107-l

Cited by 20 publications

(12 citation statements)

References 36 publications

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“…Numerous studies show that even when attempting to bond the material to a cavity preparation, the marginal seal is typically compromised, resulting in marginal gaps, stains, or leakage [49,50]. This deficiency remains true even with current "improved" adhesive systems [51][52][53]. In fact most in vitro leakage studies have shown that dental composites do not provide a perfect seal to either enamel or dentin, independent of bonding or placement method [54].…”

Section: Polymerization Stress -In Vitro Evidencementioning

confidence: 99%

Polymerization stress – Is it clinically meaningful?

2016

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Section: Polymerization Stress -In Vitro Evidencementioning

confidence: 99%

Polymerization stress – Is it clinically meaningful?

2016

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“…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. 10 In their studies, internal gap formation was most prominent at the pulpal and axiopulpal line angle of restorations. The presence of gaps at these areas could cause fluid flow in dentin tubules, resulting in typical postoperative sensitivity.…”

Section: Introductionmentioning

confidence: 95%

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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“…Furthermore, the maximum interfacial stress generated at the cavity wall in light-cured composite restorations is twice as large as that seen for self-cured composite restorations 5) . Therefore, even now light-cured resin composites show incomplete adaptation to the dentin cavity wall 6,7) . The major factor related to the effect of shrinkage stress is dependent upon the configuration of the resin composite restoration (C-factor) 8) .…”

Section: Introductionmentioning

confidence: 99%

Effect of remaining dentin thickness on bond strength of various adhesive systems to dentin

et al. 2012

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The aim of this study was to evaluate the effect of remaining dentin thickness (RDT) on resin composite bond strength to dentin surfaces when using various adhesive systems. One of three adhesives, Clearfil SE Bond, Single Bond or Clearfil Tri-S Bond, followed by Z100 resin composite were built up on flat dentin surfaces of human molars. The teeth were sectioned obtaining beams with crosssectional areas of approximately 1 mm 2 . RDT was measured and microtensile bond strength was determined. Resulting data were categorized into four groups: RDT<2 mm; 2≤RDT<3 mm; 3≤RDT<4 mm; RDT≥4 mm. Clearfil SE Bond showed a correlation between µTBS and RDT. Single Bond showed no significant difference in µTBS for any RDT. The bond strength of resin composite to the different RDT flat dentin surfaces was affected by the adhesive system used.

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Effect of the Curing Method and Composite Volume on Marginal and Internal Adaptation of Composite Restoratives

Abstract: Clinical Relevance Modulated curing methods were shown to be effective to reduce gap formation in composite restoratives.

Cited by 20 publications

References 36 publications

Polymerization stress – Is it clinically meaningful?

Polymerization stress – Is it clinically meaningful?

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

Effect of remaining dentin thickness on bond strength of various adhesive systems to dentin

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