Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Ekren, Orhun; Özkömür, Ahmet

doi:10.4047/jap.2016.8.4.290

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…This result is in agreement with that reported by Ekren et al, 22 who found that prolonged exposure to ozone lead to a significant decrease in tensile strength; other studies have shown the mechanical properties of the resins were impaired as a result of storage in water for a long period. 32 The use of water may affect the mechanical properties of the acrylic resins and the prolonged exposure to water reduces the strength of the denture, which could be attributed to the brittleness of the resin and weakness of its tensile strength, as well as a loss of monomer by exudation and a decrease in mechanical properties when the denture base resin is conditioned for long periods.…”

Section: Discussionsupporting

confidence: 93%

Tensile strength evaluation of acrylic after ozonated water and microwave disinfection.

Aziz

2020

J Oral Res

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Background: There is a need for safe disinfection methods without a detrimental effect on the acrylic denture base. Aim: the purpose of the current study was to evaluate the effect of ozonated water and two protocols of microwave disinfection on tensile bond strength of high-impact acrylic. Material and methods: Eighty samples were divided into four major groups: one control and three experimental groups, 20 specimens each. The experimental groups each received either disinfection by ozonated water, microwave 850W/1min, or microwave 650W/6min. Further division of the major groups into two sub-groups depending on the number of disinfection cycles and total immersion time in distilled water: One cycle and one day versus seven cycles and seven days. The control group specimens were immersed in distilled water without any disinfection for either one day or seven days. Tensile strength testing was performed on the specimens from the eight groups. The data were analyzed by SPSS version 21#. The ANOVA and Tukey-HSD multiple comparison tests were used for comparison for groups. Results: A non-significant difference in the tensile strength was observed in the groups subjected to one cycle of ozone or microwave disinfection at 850W/1min. There was a significant decrease in tensile strength for the specimens subjected to one cycle of 650W/6min microwaving. The number of testing cycles and storage time in distilled water had a significant impact on the tensile strength of the acrylic in all tested groups, by decreasing it. Conclusion: Ozone disinfection and microwaving at 850W for one minute did not affect the tensile strength of the acrylic, but repeated disinfection over seven days at one cycle per day impaired the tensile strength of the acrylic resin.

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Section: Discussionsupporting

confidence: 93%

Tensile strength evaluation of acrylic after ozonated water and microwave disinfection.

Aziz

2020

J Oral Res

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“…Laboratory experiments, with the soft lining of the bonding forces denture base materials was carried out using different methods of testing by various researchers, for example shear, tensile or peel tests. [20][21][22][23][24][25][26] The tensile bond strength test has been extensively used by researchers. In this study, the tensile test method is preferred because it provides the surface of the draft; it can give information about the structure of the boundary layers and the location of the failures.…”

Section: Discussionmentioning

confidence: 99%

Effect of different surface modifications on the bonding of a soft liner to a denture base material

Akay¹,

Mumcu²,

Erdinç³

2020

Selcuk Dental Journal

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Farklı yüzey modifikasyonlarının yumuşak astarın protez kaide materyaline bağlanması üzerine etkisi Amaç: Çalışmanın amacı, polidimetilsiloksan protez astarının farklı boyutlardaki alüminyum oksit parçacıkları ile kumlanmış olan protez kaide maddesine gerilme bağlanma mukavemetini araştırmaktır. Gereç Yöntemler: Dikdörtgen prizma şeklinde kırk adet ısı ile polimerize edilmiş akrilik örnek bağlantı dayanımı için değerlendirilecektir. Örnekler uygulanan yüzey işlemine göre 4 test grubuna ayrılmıştır. Grup I: Yüzey işlemi uygulanmayan (kontrol grubu), Grup II: Kumlama ile birlikte tribokimyasal silika kaplama, Grup III: 50 μm alüminyum oksit partikülleri ile kumlama, Grup IV: 110 μm alüminyum oksit partikülleri ile kumlama. Bütün örnekler yumuşak astar ile bağlantı sağlandıktan sonra 5000 devir termal siklusa tabi tutulmuştur. Bağlantı değeri, evrensel test cihazı kullanılarak çekme test ile belirlenmiştir. Verilerin normalliği Shapiro-Wilk testi ile test edildi. Tüm veriler tek yönlü ANOVA kullanılarak analiz edildi ve ortalama değerleri Tukey'in HSD testi ile karşılaştırıldı. (p <0.05). Bulgular: En yüksek bağ mukavemet değeri Grup II'de (1.51 ± 0.41 MPa) gözlendi. En düşük değer, yüzey işlemi uygulanmayan örneklerin bulunduğu grupta gözlendi (0.85 ± 0.27 MPa). Grup I, grup II ve grup III'den anlamlı olarak farklıydı (p <0.05). Sonuç: Akrilik yüzeylerin 30 μm silika kaplı alüminyum oksit ve 50 μm alüminyum oksit partikülleri ile kumlama işlemine tabi tutulması, bağlanma mukavemetini anlamlı olarak artırdı. ANAHTAR KELİMELER Polimetilmetakrilat, yumuşak astar, yüzey özellikleri, çekme dayanımı ABSTRACT Effect of different surface modifications on the bonding of a soft liner to a denture base material Background: The purpose of the study was to investigate the tensile bond strength of polydimethylsiloxane denture liner to denture base which was sandblasted with different size of aluminum oxide particles. Methods: Forty rectangular heat-polymerized acrylic resin samples were processed for bond strength test. Samples were divided into 4 test groups (n=10) according to the surface treatment as follows: Group I: no surface treatment, Group II: sandblasted and coated with tribochemical silica, Group III: sandblasted with 50 µm aluminum oxide (Al2O3) particles, Group IV: sandblasted with 110 µm Al2O3 particles. All samples were subjected to 5000 cycles of thermal cycling after connection with soft liner. The bond strength was determined by the tensile strength test using a universal testing machine. The normality of the data was tested by Shapiro-wilk test. All data were analyzed using one-way ANOVA, and their mean values were compared using Tukey's HSD test (p<0.05). Result: The highest bond strength value was observed in Group II (1.51 ± 0.41 MPa). The lowest value was observed in control group of untreated samples (0.85 ± 0.27 MPa). Group I were significantly different (p<0.05) from group II and group III. Conclusion: Sandblasting with 30 μm silica-coated aluminum oxide and 50 μm aluminum oxide particles significantly ...

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“…Based on the results of this study, immersion in 2.5 ppm of ozonated water for two hours per day did not affect the bond strength of Molloplast-B to acrylic denture base resin. Ekren and Ozkomur [21] studied the effect of peracetic acid and ozonated water on the tensile bond strength of two denture liners. They observed that prolonged exposure of Molloplast-B to ozonated water can adversely affect the bond strength; however, they used a higher concentration of ozonated water (4 ppm) compared to this study [21].…”

Section: Discussionmentioning

confidence: 99%

Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner

Nakhaei

Mirmortazavi

Ghanbari³

et al. 2020

fid

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Objectives: To evaluate the effect of ozone and two common denture cleansers on the surface hardness and bond strength of a silicone-based soft liner to acrylic denture base material. Materials and Methods: Sixty cylindrical specimens were fabricated using heat-cured poly-methyl methacrylate denture base resin. Three millimeters of the material was ground from the midsection and filled with the soft liner. The resilient liner specimens (n=40) used for the hardness test were 10 mm in diameter and 5 mm in height. Cylindrical and disc-shaped samples were randomly divided into four groups (37°C distilled water, Corega® tablets, 0.5% sodium hypochlorite (NaOCl), and a home ozone generator). To simulate six months of denture cleansing clinically, samples were placed in their cleanser once a day for six months according to the manufacturer’s instructions. All cylindrical specimens were placed under tension until failure in a universal testing machine at a crosshead speed of 5 mm/minute. For disc-shaped samples, hardness was measured using a Shore-A durometer. The results were analyzed using Kruskal-Wallis test, analysis of variance (ANOVA), and Tukey's post hoc test. Results: The mean tensile bond strength was not significantly different among the studied groups (P>0.05). The mean hardness in the ozone and Corega tablet groups was significantly lower than that of the control and NaOCl groups (P<0.05). Conclusion: The type of denture cleanser does not affect the tensile bond strength of silicone soft liners. Home ozone generators and cleansing tablets have less effect on the hardness of soft denture liners compared to 0.5% NaOCl.

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Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Cited by 7 publications

References 32 publications

Tensile strength evaluation of acrylic after ozonated water and microwave disinfection.

Tensile strength evaluation of acrylic after ozonated water and microwave disinfection.

Effect of different surface modifications on the bonding of a soft liner to a denture base material

Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner

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