A mathematical analysis of shrinkage stress development in dental composite restorations during resin polymerization

Li, Jianying; Li, Haiyan; Fok, S L

doi:10.1016/j.dental.2007.11.012

Cited by 41 publications

(29 citation statements)

References 18 publications

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“…However, it is important to remember that shrinkage stress, that is not a material property, is a consequence of multiple factors and specific methods have to be used for evaluation. Such methods are described in the literature: ring slitting method [75, 76], photoelastic analysis [77–79], finite element analysis [42, 80–83], mathematical models [84], crack propagation [85], and force transducers [2, 40, 41, 46, 86, 87]. …”

Section: Polymerization Shrinkage: Methods For Evaluationmentioning

confidence: 99%

Shrinkage Stresses Generated during Resin-Composite Applications: A Review

Schneider¹,

Cavalcante²,

Silikas³

2010

Journal of Dental Biomechanics

159

126

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Many developments have been made in the field of resin composites for dental applications. However, the manifestation of shrinkage due to the polymerization process continues to be a major problem. The material's shrinkage, associated with dynamic development of elastic modulus, creates stresses within the material and its interface with the tooth structure. As a consequence, marginal failure and subsequent secondary caries, marginal staining, restoration displacement, tooth fracture, and/or post-operative sensitivity are clinical drawbacks of resin-composite applications. The aim of the current paper is to present an overview about the shrinkage stresses created during resin-composite applications, consequences, and advances. The paper is based on results of many researches that are available in the literature.

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Section: Polymerization Shrinkage: Methods For Evaluationmentioning

confidence: 99%

Shrinkage Stresses Generated during Resin-Composite Applications: A Review

Schneider¹,

Cavalcante²,

Silikas³

2010

Journal of Dental Biomechanics

159

126

View full text Add to dashboard Cite

show abstract

“…The morphology, shrinkage and physical properties of dental composite resins have been investigated by many researchers (Xia et al 2003;Chen et al 2006;Li et al 2008). Culbertson et al (Gao et al 2001) evaluated the systems of POSS incorporated with neat resins (without filler) and found that miscibility between the POSS component and the matrix was an important factor in improving the performances of composite resin.…”

Section: Introductionmentioning

confidence: 98%

Effect of nano SiO2 particles on the morphology and mechanical properties of POSS nanocomposite dental resins

et al. 2014

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Nanocomposite dental resins composed of polyhedral oligomeric silsesquioxane nanocomposite matrix and 0, 0.5,1, 1.5 and 2 wt% nano SiO 2 as filler were prepared by light curing method. The nanocomposite resins were characterized by performing compressive, three-point flexure, nanoindentation and nanoscratch testings as well as optical microscopy and scanning electron microscope analysis. The effects of different nano SiO 2 contents were studied on compressive strength, flexural strength, hardness and resistance of composite resin. From the mechanical results, it was found that nano SiO 2 effectively enhanced the mechanical properties of the composite resins at low content. With the increase of the nano SiO 2 content, the mechanical properties decreased. It was attributed to the content of nano SiO 2 and dispersion of nanoparticles in matrix.

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“…While these predictions are more reasonable, they are still longer than the reported average longevity of composite-resin restorations of 5.7 years [38]. In addition to the limitations of the models themselves, the difference between predictions and clinical observations could be attributed to other challenges not considered in this study, namely, shrinkage stress [16,39,40], varying temperatures and pH values, reactive biochemical species, and biofilms, which can all compromise the tooth-composite interface [41,42]. It should be noted that in the case of real restorations, both the enamel and dentin are bonded to the composite resin.…”

Section: Discussionmentioning

confidence: 81%

Fatigue failure of dentin–composite disks subjected to cyclic diametral compression

Carrera

Chen

et al. 2015

Dental Materials

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Objective Our aim was to establish the relationship between cyclic loading and fatigue life of the dentin-composite interface using the newly developed disk in diametral compression tests. The results were then used to estimate the fatigue life of restored teeth under occlusal loading. Methods Disk specimens (5mm dia. × 2mm thick) were prepared using bovine incisors and restored with either a methacrylate-based composite Z100™ with Adper Single Bond Plus (Z100) or silorane-based composite Filtek ™ LS with LS System adhesive (LS). The dentin-composite disks were tested under cyclic diametral compression to determine the number of cycles to failure (Nf) at three load levels (n = 3 per group). Finite element analysis (FEA) was used to calculate the interfacial stresses (σ) within the specimen, to establish the σ vs. Nf curves, and those within a restored tooth under normal chewing forces (15N maximum). These were then used to estimate the lifetime of the restored tooth for the two restorative systems. Results The disks restored with LS had a higher fatigue resistance than those restored with Z100. The maximum interfacial stress in the restored tooth determined by FEA was ∼0.5MPa. Based on the estimate of 300,000 cycles of chewing per year, the predicted lifetime under occlusal loading for teeth restored with LS and Z100 was 33 and 10 years, respectively. Significance The disk in cyclic diametral compression has been used successfully to provide fatigue data which allows the lifetime of composite-restored teeth under occlusal loading to be predicted using numerical simulation.

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A mathematical analysis of shrinkage stress development in dental composite restorations during resin polymerization

Cited by 41 publications

References 18 publications

Shrinkage Stresses Generated during Resin-Composite Applications: A Review

Shrinkage Stresses Generated during Resin-Composite Applications: A Review

Effect of nano SiO2 particles on the morphology and mechanical properties of POSS nanocomposite dental resins

Fatigue failure of dentin–composite disks subjected to cyclic diametral compression

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