Development in polymerization shrinkage control of dental light-cured resin composites: a literature review

Guan, Xiaoxu; Zhu, Tianer; Zhang, Denghui

doi:10.1080/01694243.2022.2042122

Cited by 6 publications

(4 citation statements)

References 122 publications

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“…61 On the whole, photopolymerization processes are associated with a reduction in overall free volume known as shrinkage because the van der Waals forces and/or hydrogen bonds between monomer/oligomer building blocks (0.3−0.4 nm) are replaced by shorter covalent connections (∼0.154 nm). 62 Compared to the polymerization of monofunctional monomers, much higher shrinkage can occur during cross-linking of multifunctional monomers (up to 23 cm 3 mol −1 for multifunctional methacrylates). 63 High degrees of shrinkage may cause internal stress within the network as well as between the shrinking layers and therefore may lead to geometry deviation from CAD data, anisotropy, and deformation of parts, 64−66 or enhance the probability of failure by fracture.…”

Section: Curing Conditionsmentioning

confidence: 99%

“…63 High degrees of shrinkage may cause internal stress within the network as well as between the shrinking layers and therefore may lead to geometry deviation from CAD data, anisotropy, and deformation of parts, 64−66 or enhance the probability of failure by fracture. 62,67 The most suitable parameters to determine shrinkage behavior and associated stress evolution are the rate of reactive group consumption as well as the onset of the gel point. As pointed out previously, fast chain growth, particularly in radical photopolymerization, leads to vitrification at low conversions.…”

Section: Curing Conditionsmentioning

confidence: 99%

“…On the whole, photopolymerization processes are associated with a reduction in overall free volume known as shrinkage because the van der Waals forces and/or hydrogen bonds between monomer/oligomer building blocks (0.3–0.4 nm) are replaced by shorter covalent connections (∼0.154 nm) . Compared to the polymerization of monofunctional monomers, much higher shrinkage can occur during cross-linking of multifunctional monomers (up to 23 cm 3 mol –1 for multifunctional methacrylates) .…”

Section: Chemical Toolboxmentioning

confidence: 99%

“…Compared to the polymerization of monofunctional monomers, much higher shrinkage can occur during cross-linking of multifunctional monomers (up to 23 cm 3 mol –1 for multifunctional methacrylates) . High degrees of shrinkage may cause internal stress within the network as well as between the shrinking layers and therefore may lead to geometry deviation from CAD data, anisotropy, and deformation of parts, − or enhance the probability of failure by fracture. , …”

Section: Chemical Toolboxmentioning

confidence: 99%

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From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing

Ahmadi,

Ehrmann,

Koch

et al. 2024

Chem. Rev.

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Photopolymers have been optimized as protective and decorative coating materials for decades. However, with the rise of additive manufacturing technologies, vat photopolymerization has unlocked the use of photopolymers for three-dimensional objects with new material requirements. Thus, the originally highly cross-linked, amorphous architecture of photopolymers cannot match the expectations for modern materials anymore, revealing the largely unanswered question of how diverse properties can be achieved in photopolymers. Herein, we review how microstructural features in soft matter materials should be designed and implemented to obtain high performance materials. We then translate these findings into chemical design suggestions for enhanced printable photopolymers. Based on this analysis, we have found microstructural heterogenization to be the most powerful tool to tune photopolymer performance. By combining the chemical toolbox for photopolymerization and the analytical toolbox for microstructural characterization, we examine current strategies for physical heterogenization (fillers, inkjet printing) and chemical heterogenization (semicrystalline polymers, block copolymers, interpenetrating networks, photopolymerization induced phase separation) of photopolymers and put them into a material scientific context to develop a roadmap for improving and diversifying photopolymers' performance.

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Section: Curing Conditionsmentioning

confidence: 99%

Section: Curing Conditionsmentioning

confidence: 99%

Section: Chemical Toolboxmentioning

confidence: 99%

Section: Chemical Toolboxmentioning

confidence: 99%

See 2 more Smart Citations

From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing

Ahmadi,

Ehrmann,

Koch

et al. 2024

Chem. Rev.

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Coupled axial-torsional free vibration analysis of a rotating thin-walled composite beam in hygrothermal environments

Yuan,

Li,

Zhu

et al. 2024

Journal of the Chinese Institute of Engineers

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Could Marginal Adaptation of Composite Resin Restorations Be Influenced by a Different Polymer Using Different Techniques?

Pereira,

Vermudt,

Junior

et al. 2024

Coatings

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Background: Marginal adaptation is one of biggest challenges in restorative dentistry, mainly in restoration of composite resin. Even with development of lower shrinkage materials, like those which use the polymer silorane, it is necessary a faithful clinical protocol in order to obtain better results and more clinical durability of restorative procedure. The purpose of this study was investigated if different polymers can influence on marginal adaptation of different composite resin restorations. Material and methods: Twenty class V cavities were confectioned in twenty human molars in a standardized way. Ten dentists received one tooth each and a questionnaire to describe their own clinical protocol. The other 10 teeth were restored by one researcher as control group. The cavities received the adhesive system than increments of composite resin, and so the restorations were finished with finishing bur (KG Sorensen, São Paulo, SP, Brazil) to remove the excess, followed by sof-lex discs (3M ESPE). After this stage, all of specimens were embedded in 1% Methylene blue (Prolabo, Paris, France) during 48 h. The evaluation of pigment penetration into the interfaces was performed after specimens were washed in distilled water and longitudinally sectioned with steel Diamond disc in low velocity. Results: There was significant statistical difference between the different techniques using compose resin. Conclusions: it was possible conclude that the clinical protocol to perform dental restoration interfere dramatically in the final results of restorative procedure.

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Development in polymerization shrinkage control of dental light-cured resin composites: a literature review

Cited by 6 publications

References 122 publications

From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing

From Unregulated Networks to Designed Microstructures: Introducing Heterogeneity at Different Length Scales in Photopolymers for Additive Manufacturing

Coupled axial-torsional free vibration analysis of a rotating thin-walled composite beam in hygrothermal environments

Could Marginal Adaptation of Composite Resin Restorations Be Influenced by a Different Polymer Using Different Techniques?

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