Effects of Denture Cleansers on Heat-Polymerized Acrylic Resin: A Five-Year-Simulated Period of Use

Sorgini, Danilo Balero; Oliveira, Viviane de Cássia; Macedo, Ana Paula; Lovato, Cláudia Helena; Paranhos, Helena de Freitas Oliveira

doi:10.1590/0103-6440201300120

Cited by 39 publications

(76 citation statements)

References 19 publications

(49 reference statements)

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“…[11][12][13][14] Tablet veya toz halinde ticari formları bulunan alkalin peroksitler oksidan, efervesan, yüzey gerilimi azaltıcı ve şelasyon ajanından oluşurlar ve su ile temasa geçince hidrojen peroksit solüsyonu haline gelirler. 10 Alkalin peroksitlerin kimyasal temizliğin yanı sıra oksijen salınım procesi ile salınan oksijen kabarcıkları ile mekanik temizlik etkisi de vardır. 12 Gargaralar hoş kokuları ve tatları nedeni ile oldukça popülerdir ve protez yüzeyinde mikrobiyal kolonizasyonun oluşmasını önlerler.…”

Section: Discussionunclassified

“…12,14,16,18,19 Bu çalışmada sonuçları karşı-laştırabilmek için tüm solüsyonlarda eşit bekletme süresi seçilmiştir. 10,20 Çalışmada Grup 3 (%1 NaOCl) hariç diğer gruplarda 720 daldırma sonunda mikrosertlik değerinde istatistiksel olarak anlamlı olmasa da azalma, Grup 4 (Alkalin peroksit tablet) de ise istatistiksel olarak anlamlı azalma görülmüştür. Akrilik rezin kaide, sulu ortamda bekletildiğinde düşük miktarda su absorbe etmektedir.…”

Section: Tartiġmaunclassified

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Protez Temi̇zleyi̇ci̇ Solüsyonlarin Isi İle Poli̇meri̇ze Olan Akri̇li̇k Rezi̇ni̇n Mi̇krosertli̇ği̇ne Etki̇si̇

Öztürk¹,

Gultekin²

2017

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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The aim of this study was to investigate the influence of denture cleansing solutions on micro hardness of a heat-cure acrylic resin.Materials and Methods: Fifty specimens (15 mm × 15 mm × 3 mm) were prepared with a heat-cure acrylic resin. Specimens were randomly distributed into groups and immersed in the following solutions: 0.5% sodium hypochlorite (NaOCl), 1% NaOCl, alkaline peroxide tablet solution and, 0.2% chlorhexidine gluconate. The control group was immersed in distilled water. An immersion was detected 20-minute for all solutions. The microhardness value of each specimen was obtained using the microhardness testing machine recording the Vickers hardness number before the beginning of the immersion cycles and after completion of 720 immersion cycles and compared. Data were imported to SPSS 15.0 software and were analyzed by paired t-test and One-Way ANOVA and Tukey HSD test were used for comparison among groups (p< 0.05). Results:The results show that alkaline peroxide tablet solution caused the statistically significant reduction of the microhardness of the acrylic resin. Other solutions tested in this study did not cause a significant effect on the microhardness of the acrylic resin.Conclusions: It was concluded that immersion in distilled water, chlorhexidine gluconate, 0.5% NaOCl and, 1% NaOCl solutions, simulating 720 days of 20 min daily soaking did not cause clinically significant adverse effects on the microhardness of the heat-polymerized acrylic resin, except for the alkaline peroxide tablet solutions.

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Section: Discussionunclassified

Section: Tartiġmaunclassified

Protez Temi̇zleyi̇ci̇ Solüsyonlarin Isi İle Poli̇meri̇ze Olan Akri̇li̇k Rezi̇ni̇n Mi̇krosertli̇ği̇ne Etki̇si̇

Öztürk¹,

Gultekin²

2017

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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“…Moreover, Arruda et al 50 , evaluated color stability, surface roughness and flexural strength of acrylic resin after immersion in alkaline peroxide and alkaline hypochlorite solutions, simulating a five-yearperiod of use. They found that Corega Tabs did not change the surface roughness.…”

Section: There Was a Non-significant Direct Correlation Between Colormentioning

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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“…Studies investigating the effect of cleansers on the color stability of denture resins have used a variety of protocols . They differ not only in the cleanser used but also in the immersion time and/or the duration of the whole experiment as well.…”

mentioning

confidence: 99%

“…Extensive studies were usually limited to 180 days . but lately more studies extended their protocols even farther …”

mentioning

confidence: 99%

Evaluation of a Realistic Cleansing Protocol for Preventing Discoloration of Denture Resins

Zoidis

Polychronakis

Lagouvardos

et al. 2018

Journal of Prosthodontics

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Effects of Denture Cleansers on Heat-Polymerized Acrylic Resin: A Five-Year-Simulated Period of Use

Cited by 39 publications

References 19 publications

Protez Temi̇zleyi̇ci̇ Solüsyonlarin Isi İle Poli̇meri̇ze Olan Akri̇li̇k Rezi̇ni̇n Mi̇krosertli̇ği̇ne Etki̇si̇

Protez Temi̇zleyi̇ci̇ Solüsyonlarin Isi İle Poli̇meri̇ze Olan Akri̇li̇k Rezi̇ni̇n Mi̇krosertli̇ği̇ne Etki̇si̇

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

Evaluation of a Realistic Cleansing Protocol for Preventing Discoloration of Denture Resins

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