Studies on the reaction product of hexachlorocyclotriphosphazene and 2-hydroxyethyl methacrylate and on the physical properties of its polymer.

Anzai, Misaki; Ohashi, Masayoshi

doi:10.2334/josnusd1959.26.109

Cited by 16 publications

(10 citation statements)

References 18 publications

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“…3 proved to have a value smaller than 0.5. This can be accounted for by the increase in the compressive strength and hardness due to the bulk-polymerization [10][11][12] of 3PNC-EMA. That is, abrasion resistance increases almost in proportion to the increase in hardness shown in Fig.…”

Section: Abrasion Resistancementioning

confidence: 99%

“…In an attempt to resolve these problems, the authors have examined various kinds of monomers, and in the present series of studies aimed at improving the physical properties of resin, especially mechanical strength and abrasion resistance, they selected and examined hexa (methacryloxyethylenedioxy) cyclotriphosphazene (3PNC-EMA) which had previously been synthesized by ANZAI et al [10][11][12][13] as a monomer to be used for strengthening the matrix of the polymer.…”

Section: Introductionmentioning

confidence: 99%

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A study on crown and bridge resin using PNC-EMA monomer.

Anzai

Hoya

Toriyama

et al. 1986

The Journal of Nihon University School of Dentistry

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SummaryThe present study investigated the development of crown and bridge resin using a new PNC-EMA monomer. M MA monomer has long been used for crown and bridge resins, but the polymer prepared with MMA monomer has certain demerits such as low mechanical strength and abrasion resistance. The authors prepared a polymer by mixing 3PNC-EMA monomer having a P=N bond in its skeleton, previously synthesized by ANZAI et al., with a monomer currently available the compressive strength and hardness increased in accordance with increased amounts of the mixed 3PNC-EMA monomer, but water sorption reached 1.86 mg/cm2 when the mixed amount of 3PNC-EMA was 28%. The degree of abrasion decreased in accordance with the increase in the mixed amount of 3PNC-EMA, showing a value 1/3 that of PM MA, when mixed in a proportion of 70%.

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Section: Abrasion Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A study on crown and bridge resin using PNC-EMA monomer.

Anzai

Hoya

Toriyama

et al. 1986

The Journal of Nihon University School of Dentistry

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“…Previously, we have produced various dental prostheses, such as base plates [1], relining materials [2][3][4][5][6][7][8] and artificial crownsm, using visible light-cured resins made of cyclophosphazene monomer [4PN-(TF)2-(EMA)6] [10][11][12][13] (Fig. 1), in order to make such prostheses clinically available in accordance with various purposes.…”

Section: Introductionmentioning

confidence: 99%

Basic Studies on Visible Light-cured Resin as a Denture Base. Part 17 Transverse and Tensile Strengths of Repaired Denture Base Resin Using a Trial Repair Resin.

Ishigami

Maeda

et al. 1993

The Journal of Nihon University School of Dentistry

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Trial production of a visible light-cured repair resin (powder/liquid type, TPL) as a denture base resin was carried out using cyclophosphazene monomer, and then the transverse and tensile strengths of the repaired specimens were examined. As a control, Triad Gel (TRI) was used. In the transverse strength test, TPL showed values of 507-470 kgf/cm2, which were about double those of TRI. As for tensile strength, TPL showed values of 329-268 kgf/cm2, and higher values were obtained in comparison with TRI, especially after 30 days of water immersion, when the values were doubled. The durability of TPL was favorable in comparison with TRI.

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“…Its 1-4 Cl (chlorine) atoms were replaced with p-bromophenol (BrC6H4OH, BrPh, Tokyo Kasei Kogyo Co., Tokyo), and the residual 7-4 Cl atoms were replaced with 2-hydroxyethyl methacrylate [CH2: C(CH3) COOCH2CH2OH] (HEMA, distilled under reduced pressure). Then, by the method [4,5] shown in Fig. 2, four kinds of radiopaque cyclophosphazene monomers, 4PN (BrPh)1-4-(EMA)7-4, were synthesized.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Radiopaque Cyclophosphazene Monomers, Properties of Bulk Polymers and their Application to Composite Resin.

Anzai

Kobori

Yoshihashi

et al. 1992

The Journal of Nihon University School of Dentistry

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A series of studies was conducted on the synthesis of polyfunctional cyclophosphazene monomers having radiopacity and a polymerization group in the same molecule, and their properties and applicability to composite resin were examined. Using octachlorocyclotetraphosphazene, P4N4Cl8 (4PNC), monomers were synthesized by replacing the 1-4 of chlorine (Cl) with p-bromophenol (BrC6H4OH, BrPh), and replacing the residual number of C 1, 7-4, with 2-hydroxyethyl methacrylate [CH2:C(CH3)COOCH2CH2OH] (HEMA), so as to obtain four kinds of transparent monomer having radiopacity and a polymerization group in the same molecule. We then analyzed these monomers and examined their physical properties after bulk-polymerization. Next, we prepared an organic composite filler using 4PN-(BrPh)3-(EMA)5 monomer, which showed comparatively good radiopacity, to produce a new experimental radiopaque composite resin.Although radiopacity improved in accordance with the increase in the number of BrPh molecules replaced, the mechanical properties of the polymer became poorer. Similarly it was proved that the radiopacity of composite resin made with 4PN-(BrPh)3-(EMA)5 monomer was equivalent or even superior, compared with the radiopacity of the front tooth.Consequently, it was shown that these synthesized monomers can be applied to visible light-cured radiopaque composite resin.

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Studies on the reaction product of hexachlorocyclotriphosphazene and 2-hydroxyethyl methacrylate and on the physical properties of its polymer.

Cited by 16 publications

References 18 publications

A study on crown and bridge resin using PNC-EMA monomer.

A study on crown and bridge resin using PNC-EMA monomer.

Basic Studies on Visible Light-cured Resin as a Denture Base. Part 17 Transverse and Tensile Strengths of Repaired Denture Base Resin Using a Trial Repair Resin.

Synthesis of Radiopaque Cyclophosphazene Monomers, Properties of Bulk Polymers and their Application to Composite Resin.

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