Evaluation of fracture resistance of resins used for provisional restorations

Koumjian, Jack H.; Nimmo, Arthur

doi:10.1016/0022-3913(90)90290-s

Cited by 69 publications

(72 citation statements)

References 10 publications

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“…The mean flexural resistance value for the Control Group without reinforcement found in this study (80.60 MPa), was similar to the values demonstrated by Koumjiam & Nimmo [2], (76.81 MPa) and Vallittu et al [5], (89.00 MPa). Nevertheless, these values are in contrast to the values described by Wang et al [7] (55.41 MPa) and Vallittu [19] (58.00 MPa).…”

Section: Discussionsupporting

confidence: 90%

“…Koumjian & Nimmo [2] found no differences in the flexural resistance of samples made of PMMA after storage in water at 37 ºC for seven days, when compared with those stored in a dry environment at 23 ºC for the same period of time. Ireland et al [9], observed no significant difference in flexural resistance and in the modulus of elasticity when resins were stored in water at 37 ºC for 24 h or 60 days.…”

Section: Discussionmentioning

confidence: 94%

“…T he purpose of the provisional restorations is to protect the dentin-pulp complex in the prepared teeth; to evaluate and preserve the periodontal tissues; prevent movement of the abutment teeth; help to stabilize the teeth with mobility; provide the patient with adequate esthetics and phonetics, and promote comfort during masticatory function [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, in spite of all these advantages, acrylic resins sometimes have insufficient mechanical properties to withstand the occlusal forces [2,[6][7][8]. Fractures of these resins mainly occur due to flexural fatigue or failures resulting from impact [7,9,10].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Olivieri

Costa

Miranda

et al. 2013

BDS

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Objective: To evaluate the effect of three different types of reinforcements on the flexural strength of a chemically activated acrylic resin.Materials and Methods: A Universal test machine EMIC 2000 was used at a speed of 5mm/min., to evaluate the flexural strength of 40 test specimens (65mm X 10mm X 3mm) fabricated of chemically activated acrylic resin, distributed into the following four groups: (1) control – without reinforcement; (2) reinforced with 0.7mm stainless steel orthodontic wire; (3) reinforced with Fibrex-lab® glass fiber and; (4) reinforced with Perma-Fiber®glass fiber.Results: The following flexural strength values were obtained: Group 1 – 80.60 MPa; Group 2 – 95.96 MPa; Group 3 – 105.70 MPa; and Group 4 – 108.70 MPa. The analysis of variance (p < 0.05) showed significant difference among the groups and the Tukey test showed that the control group presented the worst behavior, followed by reinforcement with metal wire, which showed statistically similar results to those of Group 3, with no difference shown between the fiber groups.Conclusion: Reinforcement with glass fibers present better flexural strength in comparison with the other methods.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Olivieri

Costa

Miranda

et al. 2013

BDS

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“…Koumjian and Nimmo [12] reported that transverse strength was reduced by 85 % after repair of a temporary resin. Their study proposed that it might be more convenient to prepare a new temporary restoration than to repair the restoration.…”

Section: Introductionmentioning

confidence: 99%

Improving shear bond strength of temporary crown and fixed dental prosthesis resins by surface treatments

Kim

Lee

et al. 2015

J Mater Sci

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This study evaluated the effect of surface treatments on the bond strength of repaired temporary resins. One-hundred flat-surfaced cylindrical specimens (Ø 7 mm 9 12 mm) of each temporary resin (2 bis-acryl resins and 2 polymethyl-methacrylates) were prepared. The specimens were randomly divided into 10 groups (n = 10), according to the types of surface treatments: untreated, adhesive treated, silanated, silane ? adhesive treated, hydrofluoric acid etched, laser treated, sandblasted, sandblasting ? adhesive treated, sandblasting ? silanated, and tribochemical silica coating ? silanated. Each resin material of the same brand with cylindrical shape (Ø 3 mm 9 3 mm) was polymerized onto the resin surfaces, and specimens were stored for 24 h in distilled water. The shear bond strengths were measured and failure modes were examined. All data were analyzed with a one-way ANOVA and multiple comparison Scheffé post hoc test (a = 0.05). For bis-acryl resins, the highest shear bond strength was observed in sandblasted group and the lowest was observed in the control group. Results show that the repair bond strength was improved for bis-acryl resin by 23 % than that of the control group due to the increase in surface roughness by sandblasting. However, chemical treatment did not improve repair bond strength. The surface treatment of bis-acryl resins with sandblasting seems to be promising for the improvement of repair bond strength.

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Therapeutic Temporary Restorations

Ahmad¹

2006

Protocols for Predictable Aesthetic Dental Restorations

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Evaluation of fracture resistance of resins used for provisional restorations

Cited by 69 publications

References 10 publications

Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Improving shear bond strength of temporary crown and fixed dental prosthesis resins by surface treatments

Therapeutic Temporary Restorations

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