A Novel Polyurethane-based Root Canal–obturation Material and Urethane Acrylate–based Root Canal Sealer—Part I: Synthesis and Evaluation of Mechanical and Thermal Properties

Hsieh, K. H.; Liao, Kuo‐Wei; Lai, Eddie Hsiang-Hua; Lee, Bor-Shiunn; Lee, Chung-Yi; Lin, Chang‐Ching

doi:10.1016/j.joen.2007.12.006

Cited by 16 publications

(10 citation statements)

References 17 publications

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“…The preparation procedures were the same as previously described (9). Briefly, 2-hydroxylethylmethacrylate (Acros Organics, Geel, Belgium) was mixed with isophorone diisocyanate (Double Bond Chemical, Taipei, Taiwan) in a 1:1 molar ratio, dissolved in acetone, and reacted in 50 C reactors for 3 hours to form isophorone diisocyanatemodified 2-hydroxylethylmethacrylate.…”

Section: Preparation Of Urethane Acrylate/tripropylene Glycol Diacrylmentioning

confidence: 99%

“…The authors have developed a zinc oxide/thermoplastic polyurethane (ZnO/TPU) cones of composite root canal filling material with higher tensile strength and elastic modulus than gutta-percha (9). The authors have also developed a visible-light curable urethaneacrylate/tripropylene glycol diacrylate root canal sealer having higher bond strength with EndoREZ or ZnO/TPU cones (10).…”

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confidence: 99%

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A Novel Urethane Acrylate–based Root Canal Sealer with Improved Degree of Conversion, Cytotoxicity, Bond Strengths, Solubility, and Dimensional Stability

Lee

Wang

Fang

et al. 2011

Journal of Endodontics

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Section: Preparation Of Urethane Acrylate/tripropylene Glycol Diacrylmentioning

confidence: 99%

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confidence: 99%

A Novel Urethane Acrylate–based Root Canal Sealer with Improved Degree of Conversion, Cytotoxicity, Bond Strengths, Solubility, and Dimensional Stability

Lee

Wang

Fang

et al. 2011

Journal of Endodontics

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“…When designing injectable polymeric materials, a PU sealer can provide multiple advantages, 21,22 such as controllable fluidity and fast curing. More importantly, the volume of the PU materials slightly increases after polymerization and thus could conform to the requirements of hermetic obturation.…”

Section: Introductionmentioning

confidence: 99%

“…Increasing the degree of conversion not only ensures the elimination of uncured monomers, which may cause adverse biological reactions, but it also results in more favorable mechanical properties, such as surface hardness, flexural strength, and fracture toughness. 20,21 In addition, inadequate conversion might also weaken the bond to dentin. 28 According to the FTIR analysis, the novel PU-Ag 3 PO 4 sealers showed a high degree of conversion, and this may result in lower cytotoxicity after curing in situ.…”

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confidence: 99%

Physicochemical and biological properties of a novel injectable polyurethane system for root canal filling

Wang¹,

Zuo²,

Zhao³

et al. 2015

IJN

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A root canal sealer with antibacterial activity can be efficacious in preventing reinfection that results from residual microorganisms and/or the leakage of microorganisms. In the present study, a series of injectable, self-curing polyurethane (PU)-based antibacterial sealers with different concentrations of silver phosphate (Ag 3 PO 4 ) were fabricated. Subsequently, their physicochemical properties, antibacterial abilities, and preliminary cytocompatibilities were evaluated. The results indicated that the fabricated PU-based sealers can achieve a high conversion rate in a short amount of time. More than 95% of the isocyanate group of PU sealers with 3 wt% (PU3) and 5 wt% (PU5) concentrations of Ag 3 PO 4 were included in the curing reaction after 7 hours. With the exception of those for film thickness for PU5, the results of setting time, film thickness, and solubility were able to meet the requirements of the International Organization for Standardization. The antibacterial tests showed that PU3 and PU5 exhibit stronger antimicrobial effects than that achieved with 1 wt% Ag 3 PO 4 (PU1) and AH Plus (positive control) against Streptococcus mutans . The cytocompatibility evaluation revealed that the PU1 and PU3 sealers possess good cytocompatibility and low cytotoxicity. These results demonstrate that the PU3 sealer offers good physicochemical and antimicrobial properties along with cytocompatibility, which may hold great application potential in the field of root canal fillings.

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“…10,11 In addition, thermoplasticity of Resilon is higher than those of conventional and thermoplastic gutta-percha, 12 such as Obturaflow, Endoflow and Regular Obtura. 13 …”

Section: Introductionmentioning

confidence: 99%

Resilon: A Comprehensive Literature Review

Lotfi,

Ghasemi,

Rahimi

et al. 2013

Journal of Dental Research

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A Novel Polyurethane-based Root Canal–obturation Material and Urethane Acrylate–based Root Canal Sealer—Part I: Synthesis and Evaluation of Mechanical and Thermal Properties

Cited by 16 publications

References 17 publications

A Novel Urethane Acrylate–based Root Canal Sealer with Improved Degree of Conversion, Cytotoxicity, Bond Strengths, Solubility, and Dimensional Stability

A Novel Urethane Acrylate–based Root Canal Sealer with Improved Degree of Conversion, Cytotoxicity, Bond Strengths, Solubility, and Dimensional Stability

Physicochemical and biological properties of a novel injectable polyurethane system for root canal filling

Resilon: A Comprehensive Literature Review

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