Evaluation of the filler packing structures in dental resin composites: From theory to practice

Wang, Ruili; Habib, Eric; Zhu, Jiale

doi:10.1016/j.dental.2018.03.022

Cited by 47 publications

(33 citation statements)

References 35 publications

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“…The most common classification system for composites considers the distribution and average filler particle size . Based on the classification systems by Lutz and Phillips in 1983, composites can be classified into: macrofilled, microfilled, hybrids, modern hybrids, and nanofilled composites.…”

Section: Composite System Classification Of Dental Compositesmentioning

confidence: 99%

“…The most common classification system for composites considers the distribution and average filler particle size. 14,15 Based on the classification systems by Lutz and Phillips in 1983, composites can be classified into: macrofilled, microfilled, hybrids, modern hybrids, and nanofilled composites. With filler particle sizes ranging from about 10 to 50 μm, conventional or macrofilled composites were mechanically strong, but difficult to polish and to retain a favorable color match.…”

Section: Filler Particle Sizementioning

confidence: 99%

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Development and status of resin composite as dental restorative materials

Zhou

Huang

et al. 2019

J of Applied Polymer Sci

111

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Dental composites are comprised of a polymerizable matrix and reinforcing fillers that can be hardened into a solid restoration in the prepared tooth cavity. Composites are becoming increasingly popular due to their esthetics and improved mechanical and physical properties. However, dental composites still encounter several problems, mainly secondary (recurrent) caries, restoration fracture, excessive wear, marginal degradation, and tooth sensitivity. Therefore, extensive efforts are underway to improve the composite compositions and microstructure, and enhance their clinical performance and longevity. Relying on advances in materials science and technology, dental composites have been continuously improved and their clinical applications have been expanded. In this review article, the development of dental composites was summarized, including compositional changes, performance improvements in key areas, current research hot spots, and outlook for future direction. The intention is to provide a review of the history and development of dental composites with a discussion of strategies on addressing the current challenges facing dental composites. In addition, this review will provide a better understanding of dental composites and their properties for the practicing clinicians, to contribute to improving the quality of composite restorations. The review of literature indicates that while current composites are generally bio‐inert and can replace the missing tooth structure, future composites should be bioactive and therapeutic to inhibit caries, modulate biofilms, and protect the surrounding tooth structures, in order to increase the restoration longevity. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48180.

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Section: Composite System Classification Of Dental Compositesmentioning

confidence: 99%

Section: Filler Particle Sizementioning

confidence: 99%

Development and status of resin composite as dental restorative materials

Zhou

Huang

et al. 2019

J of Applied Polymer Sci

111

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“…7 Silica-resin composites are the most commonly used among commercial dental resin composites. 8 Other fillers can be added to silica-resin composites to further improve their mechanical properties, such as zirconium oxide, 9 titanium dioxide, 10 and zinc oxide. 11 Most notably, however, zirconia has been added to silica-based filler systems since the 1990s, 12 owing to its high strength, fracture toughness, hardness, and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

Dai¹,

Chen²,

Yang³

et al. 2019

IJN

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Purpose: To investigate the effects of nanozirconia fillers conditioned with 10-methacryloyloxydecyl dihydrogen phosphate (MDP) with or without zirconium hydroxide precoating on bending strength, Vickers hardness, and translucence of dental resin composites. Methods: We obtained nanozirconia fillers coated with different concentrations of Zr(OH) 4 using wet-chemical synthesis. We analyzed coating quality by observing electron-diffraction patterns using transmission electron microscopy. We conditioned zirconia fillers, with or without prior Zr(OH) 4-coating, using MDP-containing primers and evaluated the formation of chemical bonds using nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS). We then performed three-point bending-strength tests, Weibull analysis, Vickers hardness, and translucence-parameter analysis with or without addition of different concentrations of zirconia using untreated zirconia fillers as controls. Results: We achieved desirable Zr(OH) 4 coating using 5 mmol/L zirconium chloride. NMR and XPS analysis detected stronger Zr-O-P peaks on MDP-conditioned zirconia fillers with prior Zr(OH) 4-coating compared with MDP-conditioned fillers alone, suggesting that MDP bonding with zirconia was enhanced by zirconium hydroxide. Our three-point bending-strength tests revealed that increasing levels of untreated zirconia fillers decreased the three-point bending strength of the resin composites, while MDP-conditioned zirconia fillers with or without prior Zr(OH) 4 coating improved three-point bending strengths. Adding 5 wt% and 7.5 wt% MDP-conditioned zirconia fillers with prior Zr(OH) 4 coating achieved the highest three-point bending strength. Furthermore, addition of zirconia fillers decreased the translucence of silica-based resin composites. Conclusion: MDP conditioning with prior Zr(OH) 4 coating is recommended for treating nanozirconia fillers of resin composites.

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“…Utwardzane światłem kompozyty na bazie żywicy dimetakrylanowej są obecnie szeroko stosowane jako materiały do naprawy uszkodzonej struktury zęba, przede wszystkim ze względu na walory estetyczne [1] i łatwość obróbki utwardzonego materiału [2,3]. Kompozyty stomatologiczne składają się głównie z osnowy polimerowej oraz napełniacza nieorganicznego [4], takiego jak: krzemionka koloidalna, proszek szklany, kwarc [5].…”

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“…Pierwsza to organiczny monomer z fotoinicjatorami, rozcieńczalnikami, pigmentami i stabilizatorami [13], druga to środek sprzęgający składniki organiczne z nieorganicznymi [14]. Obecnie stosowanymi monomerami w polimerowych kompozytach stomatologicznych są przede wszystkim 1) Politechnika Lubelska, Wydział Mechaniczny, Katedra Technologii i Przetwórstwa Tworzyw Polimerowych, ul. Nadbystrzycka 36, 20-618 Lublin.…”

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The effect of photopolymerization conditions on selected mechanical properties of dental composites

Nowacka

Klepka

2019

Polimery

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Badano wpływ warunków fotopolimeryzacji na wybrane właściwości mechaniczne kompozytów stomatologicznych na bazie żywicy dimetakrylanowej, o zawartości fazy nieorganicznej 22-65 % mas. Stosowano naświetlanie ciągłe i przerywane z jednorodnym i zmiennym natężeniem światła. Stwierdzono, że twardość wyznaczona metodą Shore'a oraz wartość maksymalnej siły ścinającej, a także przyczepność kompozytu do podłoża metalowego ściśle zależą od natężenia i czasu naświetlania. Z wykorzystaniem stanowiska pin-on-disc wyznaczono wartości współczynnika tarcia oraz zużycia trybologicznego badanych kompozytów stomatologicznych. Największą twardość Shore'a wykazywały kompozyty naświetlane metodą SOFT-START, a najmniejszą-naświetlane metodą ciągłą jednorodną. Największe wartości siły były generowane podczas odrywania od podłoża kompozytu naświetlanego metodą PULSE DELAY.

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Evaluation of the filler packing structures in dental resin composites: From theory to practice

Cited by 47 publications

References 35 publications

Development and status of resin composite as dental restorative materials

Development and status of resin composite as dental restorative materials

<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

The effect of photopolymerization conditions on selected mechanical properties of dental composites

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