The Effect of Experimental Denture Cleanser Solution Ricinus communis on Acrylic Resin Properties

Pisani, Marina Xavier; Silva‐Lovato, Cláudia Helena; Paranhos, Helena de Freitas Oliveira; Souza, Raphael Freitas de; Macedo, Ana Paula

doi:10.1590/s1516-14392010000300015

Cited by 40 publications

(78 citation statements)

References 27 publications

(32 reference statements)

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“…Davi et al evaluated continuous use of sodium hypochlorite for 8 hours, 1% over 6 months, showing a significant change in resin color (as in this study) and flexural strength, but without alteration in surface roughness, different from the results of this study, which showed change in roughness in all tested liquids, including water (control). Similar results were found in other studies showing a significant change in the roughness of acrylic resin immersed into solutions based on castor oil and propolis orobase gel …”

Section: Discussionsupporting

confidence: 92%

“…Regarding Knoop microhardness, the results of this work showed no significant alterations in pink or colorless acrylic resin when evaluated until 12‐month immersion in any of the liquids tested. Pisani et al found different results by using 2% castor oil showing that there was a decrease of microhardness. da Silva et al, using alcoholic propolis gel extract, showed that microhardness increased over time.…”

Section: Discussionmentioning

confidence: 99%

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Rosemary, Castor Oils, and Propolis Extract: Activity Against Candida Albicans and Alterations on Properties of Dental Acrylic Resins

Heidrich

Fortes

Mallmann

et al. 2018

Journal of Prosthodontics

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Rosemary, Castor Oils, and Propolis Extract: Activity Against Candida Albicans and Alterations on Properties of Dental Acrylic Resins

Heidrich

Fortes

Mallmann

et al. 2018

Journal of Prosthodontics

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“…The use of denture cleaning dentifrices is recommended since brushing using water alone does not remove organic deposits and stains from dentures (4). However, cleaning complete dentures using a soft bristled toothbrush combined with dentifrices was also associated with adverse effects on acrylic resin (32). The results of the present study revealed significant weight loss at 40,000 brushing strokes and at 60,000 strokes and the presence of small scratches following 60,000 strokes which may be due to the abrasive properties of the dentifrice used.…”

Section: Discussionmentioning

confidence: 99%

Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base

Shinawi¹

2017

Electron physician

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BackgroundThe application of computer-aided design computer-aided manufacturing (CAD CAM) technology in the fabrication of complete dentures, offers numerous advantages as it provides optimum fit and eliminates polymerization shrinkage of the acrylic base. Additionally, the porosity and surface roughness of CAD CAM resins is less compared to conventionally processed resins which leads to a decrease in the adhesion of bacteria on the denture base, which is associated with many conditions including halitosis and aspiration pneumonia in elderly denture wearers.AimTo evaluate the influence of tooth brushing with dentifrices on CAD CAM resin blocks in terms of abrasion resistance, surface roughness and scanning electron photomicrography.MethodsThis experimental study was carried out at the Faculty of Dentistry of King Abdulaziz University during 2016. A total of 40 rectangular shaped polymerized CAD CAM resin samples were subjected to 40.000 and 60.000 brushing strokes under a 200-gram vertical load simulating three years of tooth brushing strokes using commercially available denture cleaning dentifrice. Data were analyzed by SPSS version 20, using descriptive statistics and ANOVA.ResultsANOVA test revealed a statistical significant weight loss of CAD CAM acrylic resin denture base specimens following 40.000 and 60.000 brushing strokes as well as a statistical significant change (p=0.0.5) in the surface roughness following brushing. The CAD CAM resin samples SEM baseline imaging revealed a relatively smooth homogenous surface, but following 40,000 and 60,000 brushing strokes, imaging displayed the presence of small scratches on the surface.ConclusionCAD CAM resin displayed a homogenous surface initially with low surface roughness that was significantly affected following simulating three years of manual brushing, but despite the significant weight loss, the findings are within the clinically acceptable limits.

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“…After this period, the color change, roughness and flexural strength tests were performed. The calculation of these immersion periods was done by the following method 24 .…”

Section: Immersion Periodmentioning

confidence: 99%

Effect of Denture Cleansers on Flexural Strength, Color Stability and Surface Roughness of Flexible and Microwave cured Acrylic Resin

2017

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Purpose:The aim of the present study was to evaluate the effect of denture cleansers on the flexural strength, color stability and surface roughness of flexible denture base resin as well as micro wave cured denture base resin. Materials and Methods: A total of 144 specimens were fabricated. Seventy two specimens were constructed from each type of resin and were further subdivided into 3 subgroups (n=24) according to their immersion in different types of denture cleansers. Subgroup1: distilled water (control), subgroup 2: 5% sodium hypochlorite and subgroup 3: effervescent alkaline tablets (Corega tabs). The color changes and surface roughness were measured for each subgroup before (baseline) and after immersion in the solutions. The flexural strength was also measured after their immersion. Results: For both groups (flexible denture base resin and microwave cured denture resin groups); control subgroup showed the statistically significant higher flexural strength values, while subgroup treated with Corega Tabs recorded the statistically significant lowest flexural strength values. Regarding the color changes, for both groups (flexible denture base resin and microwave cured denture resin groups); subgroup treated with Corega Tabs recorded statistically significant highest (ΔE) mean values, followed by subgroup treated with sodium hypochlorite then the control subgroup. However, there was a statistically non-significant difference of the Ra values between the tested groups and subgroups. Conclusions: Within the limitations of the study, it was concluded that the tested denture cleansers had no effect on the surface roughness of flexible and microwave cured acrylic resin, however, significantly influenced their flexural strength. Moreover, denture base polymers are susceptible to color change on immersion in Corega Tabs.

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The Effect of Experimental Denture Cleanser Solution Ricinus communis on Acrylic Resin Properties

Cited by 40 publications

References 27 publications

Rosemary, Castor Oils, and Propolis Extract: Activity Against Candida Albicans and Alterations on Properties of Dental Acrylic Resins

Rosemary, Castor Oils, and Propolis Extract: Activity Against Candida Albicans and Alterations on Properties of Dental Acrylic Resins

Effect of denture cleaning on abrasion resistance and surface topography of polymerized CAD CAM acrylic resin denture base

Effect of Denture Cleansers on Flexural Strength, Color Stability and Surface Roughness of Flexible and Microwave cured Acrylic Resin

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