Effect of different cleansers on the weight and ion release of removable partial denture: an in vitro study

Felipucci, Daniela Nair Borges; Davi, Letícia Resende; Paranhos, Helena de Freitas Oliveira; Bezzon, Osvaldo Luiz; Silva, Rodrigo Ferreira; Júnior, Fernando Barbosa; Pagnano, Valéria Oliveira

doi:10.1590/s1678-77572011000500008

Cited by 44 publications

(55 citation statements)

References 18 publications

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“…The literature is scarce regarding mass changes of acrylic resin after immersion in denture cleansers. There were no weight changes of specimens made of acrylic resin and different metal alloys after immersion in sodium hypochlorite solution in a simulation period of six months, but the employed concentration was 0.05% (24). The mass loss was not found for the Corega group, which may be explained by the presence of titanium dioxide in its composition, a white pigment widely used as an opacifying agent.…”

Section: Discussionmentioning

confidence: 85%

Adverse Effects on PMMA Caused by Mechanical and Combined Methods of Denture Cleansing

et al. 2015

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This study evaluated the abrasiveness of mechanical and combined methods of denture hygiene, by the analysis of mass loss and surface roughness. Acrylic resin specimens (Plexiglass) were brushed by a tooth brushing machine (Mavtec) with a soft brush (Tek) and water (control) or four dentifrices (Sorriso, Colgate, Polident and Corega) (Experimental groups) for 50 min, representing one year of brushing (mechanical method). After brushing, the specimens were immersed in 0.5% sodium hypochlorite simulating a daily cleaning of 20 min for one year (combined method). Distilled water (23 ºC) was employed as control. The mass loss (g) was analyzed by an analytical balance and the surface roughness (μm) by a rugosimeter. Data were subjected to ANOVA and Bonferroni test (α=0.05). Polident dentifrice showed lowest values of mass loss for both methods (mechanical: -0.0072±0.0017, combined:-0.011±0.002) and the combined method resulted in greater mass loss than the mechanical, except for Corega. For the surface roughness, after the mechanical method, the lowest values were registered for water (-0.007±0.016) and Polident (0.402±0.378); for the combined method, water (-0.063±0.013) showed the lowest values; there was no statistically significant difference between methods. It was concluded that Polident was the less abrasive dentifrice and the association between chemical and mechanical methods increased the mass loss but did not change the surface roughness of specimens.

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Section: Discussionmentioning

confidence: 85%

Adverse Effects on PMMA Caused by Mechanical and Combined Methods of Denture Cleansing

et al. 2015

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“…7 Corega contains agents that release oxygen with enzymes, supporting the hypothesis that oxidation in combination with a strong alkaline solution can be deleterious. 7,17 In relation to the metallic components, weight loss and ion release, 19 as well as tarnishing and spot corrosion, 25 were observed in Co-Cr alloys after immersion in a citric acid product (Medical Interporous). With regard to titanium, Davi et al 26 did not find alterations in surface roughness, but the color was not evaluated.…”

Section: Discussionmentioning

confidence: 99%

“…However, commercially pure titanium was not evaluated. 19 The purpose of this study was to evaluate the effects of six cleansing solutions on the color stability of heat-polymerized acrylic resin and on the surface brightness of four dental alloys. The null hypothesis tested was that immersion in disinfection solutions would not influence the color stability of the acrylic resin or the surface brightness of the dental alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of cleanser solutions on the color of acrylic resins associated with titanium and nickel-chromium alloys

et al. 2014

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This study evaluated the effect of cleanser solutions on the color of heat-polymerized acrylic resin (HPAR) and on the brightness of dental alloys with 180 immersion trials. Disk-shaped specimens were made with I) commercially pure titanium, II) nickel-chromiummolybdenum-titanium, III) nickel-chromium molybdenum, and IV) nickel-chromium-molybdenum beryllium. Each cast disk was invested in the flasks, incorporating the metal disk into the HPAR. The specimens (n = 5) were then immersed in solutions containing: 0.05% sodium hypochlorite, 0.12% chlorhexidine digluconate, 0.500 mg cetylpyridinium chloride, a citric acid tablet, one of two different sodium perborate/enzyme tablets, and water. The color measurements (∆E) of the HPAR were determined by a colorimeter in accordance with the National Bureau of Standards. The surface brightness of the metal was visually examined for the presence of tarnish. The results (ANOVA; Tukey test-α = 0.05) show that there was a significant difference between the groups (p < 0.001) but not among the solutions (p = 0.273). The highest mean was obtained for group III (5.06), followed by group II (2.14). The lowest averages were obtained for groups I (1.33) and IV (1.35). The color changes in groups I, II and IV were slight but noticeable, and the color change was considerable for group III. The visual analysis showed that 0.05% sodium hypochlorite caused metallic brightness changes in groups II and IV. It can be concluded that the agents had the same effect on the color of the resin and that the metallic alloys are not resistant to the action of 0.05% sodium hypochlorite.

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“…Regarding peroxides, there have been reports on the occurrence of damage to the acrylic resin (11) and the metallic components of the prosthetic device in the form of surface oxidation (12) and release of ions in the solution (13). Factors such as water temperature, immersion time and following the manufacturer's instructions are considered critical (9).…”

Section: Introductionmentioning

confidence: 99%

Color Stability, Surface Roughness and Flexural Strength of an Acrylic Resin Submitted to Simulated Overnight Immersion in Denture Cleansers

et al. 2013

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This study evaluated color stability, surface roughness and flexural strength of acrylic resin specimens after immersion in alkaline peroxide and alkaline hypochlorite, simulating a period of one and a half year of use of overnight immersion. Sixty disc-shaped (16x4 mm) and 80 rectangular specimens (65x10x3.3 mm) were prepared from heat-polymerized acrylic resin (Lucitone 550) and distributed into 4 groups (n=20): C1: without immersion, C2: 8 h immersion in distilled water; AP: 8 h immersion in alkaline peroxide effervescent tablet; SH: 8 h immersion in 0.5% NaOCl solution. Properties were evaluated at baseline and after the immersion. Color data were also calculated according the National Bureau of Standards (NBS). Results were analyzed statistically by ANOVA and Tukey's HSD test (α=0.05). AP (2.34 ± 0.41) caused color alteration significantly higher than C2 (0.39 ± 0.30) and SH (1.73 ± 0.52). The mean ΔΕ values were classified as indicial for C2 (0.36 ± 0.29) and noticeable for AP (2.12 ± 0.39) and SH (1.59 ± 0.48). SH (0.0195 ± 0.0150) caused significantly higher ΔRa (p=0.000) than the C2 (0.0005 ± 0.0115) and PA (0.0005 ± 0.0157) groups. There was no statistically significant difference (p=0.063) among the solutions for flexural strength (C1: 105. 43 ± 14.93, C2: 100.30 ± 12.43, PA: 97.61 ± 11.09, SH: 95.23 ± 10.18). In conclusion, overnight immersion in denture cleansing solutions simulating a year and a half of use did not alter the flexural strength of acrylic resin but caused noticeable color alterations, higher for alkaline peroxide. The 0.5% NaOCl solution caused increase in surface roughness.

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Effect of different cleansers on the weight and ion release of removable partial denture: an in vitro study

Cited by 44 publications

References 18 publications

Adverse Effects on PMMA Caused by Mechanical and Combined Methods of Denture Cleansing

Adverse Effects on PMMA Caused by Mechanical and Combined Methods of Denture Cleansing

Effect of cleanser solutions on the color of acrylic resins associated with titanium and nickel-chromium alloys

Color Stability, Surface Roughness and Flexural Strength of an Acrylic Resin Submitted to Simulated Overnight Immersion in Denture Cleansers

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