Setting Stress in Composite Resin in Relation to Configuration of the Restoration

Feilzer, Albert J.; Gee, A.J. de; Davidson, C.L.

doi:10.1177/00220345870660110601

Cited by 970 publications

(677 citation statements)

References 9 publications

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“…It has been reported that the relief of polymerization contraction stress of resin composites is related to cavity forms [43], the flow of resin composites [44,45], the application of flexible intermediate substances [46] and placement techniques [47].…”

Section: Relief Of Stresses Generated By Polymerization Contraction mentioning

confidence: 99%

“…Only the W-cavities showed good marginal sealing in all experimental groups. Feilzer et al [43] reported that the magnitude of polymerization contraction stress is greatly affected by the configuration of a cavity, and it increased as the C-value (the ratio of bonded surface to unbonded surface) increased. It is assumed that the C-value is related to the ratio of the cavity wall length to the free surface length in the bucco-lingual sectioned surface of a cavity.…”

Section: The Effect Of Nccl Formsmentioning

confidence: 99%

“…Accordingly, flowable composites shrink more and are less rigid than hybrid composites, and thus the interfacial stress build-up for flowable composites cannot be easily predicted [73]. The configuration of a cavity is a more important factor in flow related stress reduction than the type of resin composite used [43,44]. Microleakage scores of the control group indicate that the polymerization contraction stress may be similar to the bond strength of AQ Bond, regardless of the resin composite used.…”

Section: The Effect Of Flowable Resin Compositesmentioning

confidence: 99%

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Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Kubo

Yokota

et al. 2013

Dental Materials

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Objectives: The incidence of non-carious cervical lesions (NCCLs) has been increasing.The clinical performance of resin composites in NCCLS was previously unsatisfactory due to their non-retentive forms and margins lying on dentin. In order to address this problem, a lot of effort has been put into developing new dentin adhesives and restorative techniques. This article discusses these challenges and the criteria used for evaluating clinical performance as they relate to clinical studies, especially long-term clinical trials. Polymerization contraction, thermal changes and occlusal forces generate debonding stresses at adhesive interfaces.Methods: In laboratory studies, we have investigated how these stresses can be relieved by various restorative techniques and how bond strength and durability can be enhanced. Lesion forms, restorative techniques, adhesives (adhesive strategies, bond strengths, bond durability, and the relationship between enamel and dentin bond strengths) were found to have a complex relationship with microleakage. With regard to some restorative techniques, only several short-term clinical studies were available.

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Section: Relief Of Stresses Generated By Polymerization Contraction mentioning

confidence: 99%

Section: The Effect Of Nccl Formsmentioning

confidence: 99%

Section: The Effect Of Flowable Resin Compositesmentioning

confidence: 99%

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Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Kubo

Yokota

et al. 2013

Dental Materials

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“…Not only the balance between the bonded and unbonded surfaces (the so-called C factor) [16,18] rules the contraction and stress behavior of resin materials, but also the fact that some materials, when adhering to two parallel walls, are subjected to completely different internal and external stresses than when not adhered [3,4,17].…”

Section: Solubilitymentioning

confidence: 99%

“…Many materials, particularly the resin-based ones, undergo shrinkage while curing. As the E increases and interlocking of the surrounding walls keeps the material attached, internal stress will develop perpendicularly [4,10,16] and parallel [32,38,39] to the interfaces, which may finally impair the material's integrity and/or its attachment to the walls. This perpendicular stress can be mitigated at the moment -without disrupting the bond -by tooth or prosthesis deformation [4,41] or internal porosity of the luting material.…”

Section: Adhesionmentioning

confidence: 99%

Conventional and adhesive luting cements

Macorra

Pradíes

2002

Clinical Oral Investigations

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Luting materials for fixed prosthesis must fulfill special requirements in order to retain indirect restorations and fully maintain the integrity of abutments. The main requirements (inhibition of plaque accumulation, sealing of interface, possible antibacterial effects, acceptable solubility, wear, mechanical properties, adhesion, radiopacity, film thickness, type of curing, esthetics, storage, and cost) are reviewed to update clinical criteria on the selection of suitable materials. It can be concluded that there is no ideal luting material on the market. Alleged improvements in the physical data of newer materials do not necessarily result in better clinical performance. Only clinical trials can confirm the assumed benefits of materials.

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Modeling of viscoelastic behavior of dental chemically activated resin composites during curing

Dauvillier

Hubsch²,

Aarnts

et al. 2001

J. Biomed. Mater. Res.

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Shrinkage stresses generated in dental resin composites during curing are among the major problems in adhesive dentistry, because they interfere with the integrity of the restored tooth. The aim of this study was to find a mechanical model to describe the viscoelastic behavior of a two-paste resin composite during curing, to aid our understanding of the process of shrinkage stress development. In this study, stress-strain data on Clearfil F2 during curing were obtained by a dynamic test method and analyzed using three mechanical models (Maxwell, Kelvin, and the Standard Linear Solid model). With a modeling procedure, the model's stress response was compared with the experimental stress data, and the material parameters were calculated. On the basis of the modeling and evaluation results, a model for describing the viscoelastic behavior of the shrinking resin composite was selected. The validation results showed that the modeling procedure is free of error, and that it was capable of finding material parameters associated with a two-parametric model with a high degree of accuracy. The viscoelastic behavior of the shrinking resin composite, as excited by the conditions of the test method, cannot be described by a single mechanical model. In the early stage of curing, the most accurate prediction was achieved by the Maxwell model, while during the remainder of the curing process the Kelvin model can be used to describe the viscoelastic behavior of the two-paste resin composite.

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Setting Stress in Composite Resin in Relation to Configuration of the Restoration

Cited by 970 publications

References 9 publications

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Conventional and adhesive luting cements

Modeling of viscoelastic behavior of dental chemically activated resin composites during curing

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