Microleakage in restorations with glass ionomer liners after thermocycling

Arcoria, Charles J.; Vitasek, B.A.; DeWald, Janice P.; Wagner, Martin J.

doi:10.1016/0300-5712(90)90095-v

Cited by 13 publications

(4 citation statements)

References 29 publications

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“…As discussed in our previous study [27], thermocycling is the only in vitro test for simulating thermal stress in teeth [28, 32, 33]. Ideally, filling materials and dental tissues should have identical coefficients of thermal expansion in order to limit leakage at the margins of the restorations [34–38].…”

Section: Discussionmentioning

confidence: 99%

Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

Geerts

Seidel

Albert

et al. 2010

International Journal of Dentistry

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This study was designed to evaluate microleakage that appeared on Resin-Modified Glass-Ionomer Cement (RMGIC) restorations. Sixty class V cavities (h × w × l = 2 mm × 2 mm × 3 mm) were cut on thirty extracted third molars, which were randomly allocated to three experimental groups. All the buccal cavities were pretreated with polyacrylic acid, whereas the lingual cavities were treated with three one-step Self-Etch adhesives, respectively, Xeno III (Dentsply Detrey GmbH, Konstanz, Germany), iBond exp (Heraeus Kulzer gmbH & Co. KG, Hanau, Germany), and Adper Prompt-L-Pop (3M ESPE AG, Dental products Seefeld, Germany). All cavities were completely filled with RMGIC, teeth were thermocycled for 800 cycles, and leakage was evaluated. Results were expressed as means ± standard deviations (SDs). Microleakage scores were analysed by means of generalized linear mixed models (GLMMs) assuming an ordinal logistic link function. All results were considered to be significant at the 5% critical level (P < .05). The results showed that bonding RMGIC to dentin with a Self-Etch adhesive rather than using polyacrylic acid did not influence microleakage scores (P = .091), except for one tested Self-Etch adhesive, namely, Xeno III (P < .0001). Nevertheless, our results did not show any significant difference between the three tested Self-Etch adhesive systems. In conclusion, the pretreatment of dentin with Self-Etch adhesive system, before RMGIC filling, seems to be an alternative to the conventional Dentin Conditioner for the clinicians as suggested by our results (thermocycling) and others (microtensile tests).

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Section: Discussionmentioning

confidence: 99%

Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

Geerts

Seidel

Albert

et al. 2010

International Journal of Dentistry

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“…Assuming the fact that the main intrinsic features of an effective restorative material related to a good marginal sealing are its adhesion capacity to the tooth structure and its dimensional stability, and that conventional GIC present chemical adhesion to the tooth 2 , 13 , low linear thermal expansion coefficient - similar to the dental structure 4 , 13 - and minimal setting shrinkage 2 , 24 , one might expected them to avoid microleakage and all its consequences.…”

Section: Discussionmentioning

confidence: 99%

“…As in vitro assays presented dye penetration in GIC restorations, but the in vivo assays did not detect bacteria under those same restorations, Heys and Fitzgerald 10 (1991) concluded that either the gap between the dentin and the GIC was too small for the bacteria and their byproducts but big enough to allow dye penetration, or the bacteriostatic / bactericide properties of the material were sufficient in preventing the penetration of viable bacteria. Arcoria, et al 2 (1990) have reported that the methylene blue dye molecule is much smaller than 0.5 mm, which would be the space needed to permit the passage of bacteria and their products through the dentin / restoration interface. Therefore, dye penetration is not an absolute indicator of what could take place in a clinical context and thereby overestimates results on many occasions.…”

Section: Discussionmentioning

confidence: 99%

Performance of Brazilian and imported glass ionomer cements used in Atraumatic Restorative Treatment (ART) regarding microleakage in primary molars

Ferreira

Vale²,

Jansen³

et al. 2006

J. Appl. Oral Sci.

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With the aim of assessing the performance of Brazilian and imported glass ionomer cements (GIC) with regard to microleakage, 40 primary molars received two standard class II cavity preparations with margins in enamel. Twenty cavities were filled with Brazilian materials (Vidrion® R and Vidrion® RCaps) and the other 20 cavities were filled with imported materials (Fuji® IX and Fuji® IXGPFast capsule). All fillings were performed by a single operator according to the manufacturer's instructions. Teeth were immersed in 0.5% methylene blue and half-sectioned. Three independent calibrated examiners assessed microleakage using scores (0-3). Data were submitted to the Kruskal-Wallis statistical test and Wilcoxon analysis. High microleakage indexes were verified for all ionomer cements: 59.5% of the samples restored with Vidrion® R or Vidrion® RCaps and 83.4% of the samples restored with Fuji® IX or Fuji® IXGpFast capsule obtained the maximum score (3). The Brazilian ionomer cements presented less microleakage than imported cements, although this difference was only significant (p=0.003) among the encapsulated materials.

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“…Thermocycling stimulates aging process of the restoration on an accelerated basis (75), causing marginal degradation in all types of restorative material at a much faster rate than seen in appropriate controls (76,77). Study has shown that the thermocycling model will accelerate the process of microleakage in vitro by inducing failure of the restoration (78)(79)(80)(81)(82). The cracks along adhesive layer occurred due to stress generated during thermal change leading to gap formation.…”

Section: Thermocyclingmentioning

confidence: 99%

Using of low modulus of elasticity base in high c-factor resin composite restoration: an in vitro study

Yoohun

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This in vitro study aims�to investigate whether or not using a resin modified glass ionomer as a base or intermediate layer would improve marginal integrity of a high C-factor class V resin composite restoration. Eighty non-carious human third molars were used. A box-shaped, 5x3x2.5 mm3, Class V cavity preparation was placed on buccal surface at the cementoenamel junction. Teeth were then randomly assigned to 8 experimental groups (n=10): group 1, Resin composite (FiltekTM Z350 XT); group 2, FiltekTM Bulkfill; groups 3 and 4, resin composite with FiltekTM Z350 XT Flowable as base; groups 5 and�6, resin composite with Fuji II LC as base; groups 7 and�8, resin composite with Fuji II LC as base with use of Cavity Conditioner. In groups 1 4 the prepared cavities were etched, with selective enamel etching, and the adhesive (Scothbond Universal, 3M ESPE, USA) were then applied according to manufacturer's instructions, then restored with resin composite (FiltekTM Z350 XT, 3M ESPE, USA) while in groups 5 8 the same bonding procedures were done after placement of RMGI base. The restorations were finished and polished, thermocycled (10,000?, 5-55?C) and stained with a 50% silver nitrate solution. After being sectioned bucco-lingually, 6 surfaces of measurement per tooth were obtained, and depth of dye penetration recorded. Microleakage data were analyzed using Kruskal-Wallis non-paramatric independent analysis and a Mann-Whitney U test. Kruskal-Wallis test indicated significant differences among 8 experimental groups for gingival (P < 0.001) scores.�For Mann-Whitney U test, significant difference was found between group using low modulus of elasticity base and group without using low modulus of elasticity base only gingival margin (P < 0.001). Mann-Whitney U test also revealed significant difference between group using dentin conditioner and group without uses of dentin conditioner at gingival margin. In conclusion, based on our findings, the use of low modulus of elasticity materials does not result in better marginal seal for high C-factor Class V resin composite. The use of dentin conditioner may improve marginal integrity for resin composite restoration when RMGI is used as base.

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Microleakage in restorations with glass ionomer liners after thermocycling

Cited by 13 publications

References 29 publications

Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations

Performance of Brazilian and imported glass ionomer cements used in Atraumatic Restorative Treatment (ART) regarding microleakage in primary molars

Using of low modulus of elasticity base in high c-factor resin composite restoration: an in vitro study

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