Clinical significance of polymerization shrinkage of composite resins

Bausch, J. Robert; Lange, Kees de; Davidson, C.L.; Peters, August; Gee, A.J. de

doi:10.1016/0022-3913(82)90048-8

Cited by 185 publications

(101 citation statements)

References 23 publications

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“…1 In the oral environment, many factors may affect the lifetime of the composites, such as secondary caries, fractures and staining, which may be associated with resin shrinkage and consequent stress. 2,3 Thus, one of the goals of contemporary dentistry is to find solutions to such drawbacks. With this in mind, new formulations have been developed, such as those based on Ormocer (organic modified ceramic), dimer acid and silorane technology.…”

Section: Introductionmentioning

confidence: 99%

Do new matrix formulations improve resin composite resistance to degradation processes?

et al. 2013

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The aim of this study was to determine the degradation resistance of three new formulations-silorane-, Ormocer-and dimer-acidbased materials-and compare them to the traditional dimethacrylatebased materials. One silorane-(Filtek P90, P90), one Ormocer-(Ceram-X, CX), one dimer-acid-(N'Durance, ND) and two dimethacrylate-based (Filtek P60, P60; Tetric Ceram, TC) materials were investigated. Water sorption (Wsp) and solubility (Wsl) were determined after the materials were immersed in water for 28 days. Knoop hardness (KH) was determined before and after 24 h immersion in pure ethanol. The flexuralstrength (FS) was determined by the bending test after one-week storage in a dry environment or after one-week immersion in pure ethanol. Data were submitted to analysis of variance (ANOVA) and Tukey's test (95%). The three new formulations showed lower Wsp than the dimethacrylatebased formulation. CX (0.50 ± 0.17%) and ND (0.72 ± 0.19%) exhibited the lowest Wsp, whereas P90 (0.02 ± 0.03%) and P60 (0.04 ± 0.03%) showed the lowest Wsl. All resins showed reduced Knoop hardness number (KHN) after ethanol immersion. P60 presented the lowest decrease in KH value (19 ± 5%). TC (48 ± 3%) and P90 (39 ± 9%) showed the highest KHN decrease after ethanol storage. The FS of CX, ND and TC were affected by ethanol storage. The new formulations did not improve the degradation resistance, as compared with the traditional methacrylatebased materials.

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Section: Introductionmentioning

confidence: 99%

Do new matrix formulations improve resin composite resistance to degradation processes?

et al. 2013

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“…In the pre-gel phase, a viscous behavior is presented by the composite, and shrinkage stresses generated during the polymerization reaction can be released by the material flow. 1,[21][22][23] Polymer chains are distributed in a linear mode and have mobility that permits tensions induced by polymerization shrinkage to be dissipated by flowing. 24 As the reaction progresses, the post-gel phase starts the first crosslinks between chains, making flow difficult and simultaneously promoting the increase of mechanical properties and e that involve inducing tensions in the restoration.…”

mentioning

confidence: 99%

Influence of C-factor and Light-curing Mode on Gap Formation in Resin Composite Restorations

Santos¹,

Santos²,

Sampaio³

et al. 2009

Operative Dentistry

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“…When softer filler particles are used, the masticatory stresses are partially absorbed by the particle, rather than being totally transmitted into the surrounding matrix (12). The use of softer filler particles therefore reduce the likelihood of generating small cracks around the filler and weakening the matrix locally.…”

Section: Wearmentioning

confidence: 99%

“…Studies have shown that ligh-cured composite resins shrink in the direction of the polymerization light source (12). Contraction towards the light source causes the resin to shrink from margins of the preparation.…”

Section: Filling Techniquesmentioning

confidence: 99%

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Composite Resins: A Review Of The Types, Properties And Restoration Techniques

Wei

Tang

1994

ADUM

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The history, composition, properties and types of composite resins were reviewed. Clinical restorative techniques using composite resins as the filling material are different from those using amalgam. Specific cavity preparation designs, filling techniques, and finishing and polishing procedures are reviewed and discussed. Composite resins should be used with full awareness of their advantages as well as their short-comings and limitations.

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Clinical significance of polymerization shrinkage of composite resins

Cited by 185 publications

References 23 publications

Do new matrix formulations improve resin composite resistance to degradation processes?

Do new matrix formulations improve resin composite resistance to degradation processes?

Influence of C-factor and Light-curing Mode on Gap Formation in Resin Composite Restorations

Composite Resins: A Review Of The Types, Properties And Restoration Techniques

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