Results 1 to 10 of about 18,334 (154)

Degree of conversion and polymerization shrinkage of low shrinkage bulk-fill resin composites

open access: yesContemporary Clinical Dentistry, 2019
Background: The effectiveness of each resin composite material composition in enabling homogeneous monomer conversion and reducing polymerization shrinkage (PS) is an important issue.
Haidy N Salem   +2 more
doaj   +4 more sources

Comparison of polymerization shrinkage of a new bulk‐fill flowable composite with other composites: An in vitro study [PDF]

open access: yesClinical and Experimental Dental Research, 2022
Objective Since composites still face a critical problem called polymerization shrinkage and bulk‐fill composites have reported acceptable results for this issue, this study aims to assess the polymerization shrinkage of a new bulk‐fill flowable ...
Somayeh Khoramian Tusi   +3 more
doaj   +2 more sources

Volumetric polymerization shrinkage of contemporary composite resins [PDF]

open access: yesJournal of Applied Oral Science, 2007
The polymerization shrinkage of composite resins may affect negatively the clinical outcome of the restoration. Extensive research has been carried out to develop new formulations of composite resins in order to provide good handling characteristics and ...
Halim Nagem Filho   +5 more
doaj   +5 more sources

Comparing Polymerization Shrinkage Measurement Methods for Universal Shade Flowable Resin-Based Composites [PDF]

open access: yesBiomimetics
Universal shade flowable composites have been introduced to mimic tooth structure with reduced color mismatch and reduced chair time and cost. However, the polymerization shrinkage of resin material may lead to sensitivity and restoration failure.
Mayumi Maesako   +5 more
doaj   +2 more sources

Polymerization shrinkage and shrinkage stress development in ultra-rapid photo-polymerized bulk fill resin composites [PDF]

open access: yesDental Materials, 2021
To determine the polymerization shrinkage (%) and shrinkage stress (MPa) characteristics of ultra-rapid photo-polymerized bulk fill resin composites.Two ultra-rapid photo-polymerized bulk fill (URPBF) materials: PFill and PFlow were studied, along with their comparators ECeram and EFlow.
Hamad Algamaiah   +2 more
exaly   +3 more sources

Polymerization Shrinkage of Five Bulk-Fill Composite Resins in Comparison with a Conventional Composite Resin [PDF]

open access: yesFrontiers in Dentistry, 2018
Objectives: The polymerization shrinkage of methacrylate-based composites is among the most important causes of failure of composite restorations. The manufacturers claim that bulk-fill composites have a lower polymerization shrinkage than conventional ...
Mahdi Abbasi   +4 more
doaj   +2 more sources

Correlation Between Polymerization Shrinkage and Filler Content for Universal Shade Flowable Resin-Based Composites [PDF]

open access: yesJournal of Functional Biomaterials
The purpose of this study was to measure the filler content by weight and volume of universal shade flowable resin-based composites and analyze the correlation between polymerization shrinkage and filler content.
Nagisa Matsui   +4 more
doaj   +2 more sources

Development and pre-clinical evaluation of an isosorbide-based pit and fissure sealant achieving low polymerization shrinkage and high biocompatibility [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology
ObjectivesResin-based sealants (RBSs) are widely used to prevent pit and fissure caries in clinical dentistry. However, their high density of C=C double bonds leads to volumetric shrinkage during photo-polymerization, which may compromise enamel bonding.
Ming Zhang   +5 more
doaj   +2 more sources

Evaluation of the effect of light intensity and direction on microleakage in composite resins [PDF]

open access: yesBMC Oral Health
Purpose Despite the aesthetic advantages of composite resins, polymerization shrinkage leads to microgaps, microleakage, and restoration failures. Various light-curing devices and techniques have been developed to reduce polymerization shrinkage; however,
Savas Sagmak, Metin Bakir
doaj   +2 more sources

Polymerization shrinkage, shrinkage stress, and mechanical evaluation of novel prototype dental composite resin

open access: yesDental Materials Journal, 2020
A new photocurable composite resin for dental restorations was synthesized using a monovinyl acrylate diluent. Its polymerization shrinkage, shrinkage stress, degree of conversion, and mechanical properties were investigated and compared to those of a conventional composite resin synthesized using a triethyleneglycol dimethacrylate diluent as well as ...
ZHANG, Na, XIE, Chao
exaly   +4 more sources

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