Shear bond strength of an autopolymerizing repair resin to injection-molded thermoplastic denture base resins

Hamanaka, Ippei; Shimizu, Hiroshi; Takahashi, Yutaka

doi:10.3109/00016357.2012.757645

Cited by 25 publications

(38 citation statements)

References 8 publications

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“…The shear bond strengths of VP before surface treatment were previously reported to be approximately 3 to 5 MPa 5-7) , which was similar to the present results. The shear bond strength of VP after the sandblasting treatment was reported to be 3.6 MPa, which was not significantly greater than that of the control group (without surface treatment) in the previous study 6) . However, the shear bond strengths of the polyamides significantly increased after sandblasting.…”

Section: Discussionmentioning

confidence: 77%

“…However, the shear bond strengths of the polyamides significantly increased after sandblasting. The reasons for these discrepancies might be the blasting conditions, such as the distance and blasting time 6) . The shear bond strength of the polyamides slightly increased after the longer irradiation in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the bonding efficiency of polyamide using chemical-cured resin may not be uniform. Several surface treatments have been suggested to improve the bonding efficiencies, such as 1) surface treatments that increase the roughness using sandblasting with Al 2O3 particles 6,7) ; 2) swelling and roughening the surface with organic solvent containing dichloromethane or ethyl acetate 6,9) ; and 3) chemical improvement of the surface by ultraviolet light (UV) irradiation. The former two treatments mainly increase surface roughness and mechanical interlocking, while the latter cleans and chemically modifies the surface.…”

Section: Introductionmentioning

confidence: 99%

“…A wide variety of polymers, such as polyamide, polyacetal, polyethylene terephthalate, and polycarbonate 3,5,6) , have been used for flexible denture base resins. These polymers are thermoplastic resins; however, their bonding efficiency to a chemical-cured resin is usually poor.…”

Section: Introductionmentioning

confidence: 99%

“…These polymers are thermoplastic resins; however, their bonding efficiency to a chemical-cured resin is usually poor. In particular, the bonding of polyamide using the chemical-cured resin was reported to be very difficult [5][6][7] . There are various types of polyamides with different molecule structures 3,8) , and they are difficult to dissolve in organic solvents.…”

Section: Introductionmentioning

confidence: 99%

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Effect of ultraviolet light irradiation and sandblasting treatment on bond strengths between polyamide and chemical-cured resin

et al. 2014

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The aim of this study was to evaluate the effects of ultraviolet light (UV) irradiation and sandblasting treatment on the shear bond strength between polyamide and chemical-cured resin. Three types of commercial polyamides were treated using UV irradiation, sandblasting treatment, and a combining sandblasting and UV irradiation. The shear bond strength was measured and analyzed using the Kruskal-Wallis test (α=0.05). Comparing shear bond strengths without surface treatment, from 4.1 to 5.7 MPa, the UV irradiation significantly increased the shear bond strengths except for Valplast, whose shear bond strengths ranged from 5.2 to 9.3 MPa. The sandblasting treatment also significantly increased the shear bond strengths (8.0 to 11.4 MPa). The combining sandblasting and UV irradiation significantly increased the shear bond strengths (15.2 to 18.3 MPa) comparing without surface treatment. This combined treatment was considered the most effective at improving the shear bond strength between polyamide and chemical-cured resin.

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Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of ultraviolet light irradiation and sandblasting treatment on bond strengths between polyamide and chemical-cured resin

et al. 2014

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Fabrication and physical properties of glass‐fiber‐reinforced thermoplastics for non‐metal‐clasp dentures

2016

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Recently, non-metal-clasp dentures (NMCDs) made from thermoplastic resins such as polyamide, polyester, polycarbonate, and polypropylene have been used as removable partial dentures (RPDs). However, the use of such RPDs can seriously affect various tissues because of their low rigidity. In this study, we fabricated high-rigidity glass-fiber-reinforced thermoplastics (GFRTPs) for use in RPDs, and examined their physical properties such as apparent density, dynamic hardness, and flexural properties. GFRTPs made from E-glass fibers and polypropylene were fabricated using an injection-molding. The effects of the fiber content on the GFRTP properties were examined using glass-fiber contents of 0, 5, 10, 20, 30, 40, and 50 mass%. Commercially available denture base materials and NMCD materials were used as controls. The experimental densities of GFRTPs with various fiber contents agreed with the theoretical densities. Dynamic micro-indentation tests confirmed that the fiber content does not affect the GFRTP surface properties such as dynamic hardness and elastic modulus, because most of the reinforcing glass fibers are embedded in the polypropylene. The flexural strength increased from 55.8 to 217.6 MPa with increasing glass-fiber content from 0 to 50 mass%. The flexural modulus increased from 1.75 to 7.42 GPa with increasing glass-fiber content from 0 to 50 mass%, that is, the flexural strength and modulus of GFRTP with a fiber content of 50 mass% were 3.9 and 4.2 times, respectively, those of unreinforced polypropylene. These results suggest that fiber reinforcement has beneficial effects, and GFRTPs can be used in NMCDs because their physical properties are better than those of controls. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2254-2260, 2017.

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Esthetic Solutions for Removable Partial Dentures

Şakar

2024

Removable Partial Dentures

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Shear bond strength of an autopolymerizing repair resin to injection-molded thermoplastic denture base resins

Cited by 25 publications

References 8 publications

Effect of ultraviolet light irradiation and sandblasting treatment on bond strengths between polyamide and chemical-cured resin

Effect of ultraviolet light irradiation and sandblasting treatment on bond strengths between polyamide and chemical-cured resin

Fabrication and physical properties of glass‐fiber‐reinforced thermoplastics for non‐metal‐clasp dentures

Esthetic Solutions for Removable Partial Dentures

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