Perbedaan nilai kekerasan permukaan semen Glass Ionomer (GIC) dan modifikasi resin semen Glass Ionomer (RMGIC) akibat efek cairan lambung buatan secara in vitro

2017 ◽  
Vol 1 (2) ◽  
pp. 77
Author(s):  
Nuni Maharani ◽  
Agung Wibowo ◽  
Dudi Aripin ◽  
Mohammad Richata Fadil
Keyword(s):  
Surface Roughness ◽  
Gastroesophageal Reflux Disease ◽  
Gastroesophageal Reflux ◽  
Gastric Juice ◽  
Reflux Disease ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Post Hoc ◽  
Ionomer Cement

Pendahuluan: Gastroesophageal reflux disease (GERD) didefinisikan sebagai reflex otot esophagus atau spincter, yang memungkinkan asam lambung bergerak naik melalui kerongkongan hingga masuk kedalam rongga mulut. Asam lambung memiliki pH berkisar 1 hingga 1.5, berada di bawah pH kritis email sebesar 5.5 yang dapat menyebabkan terjadinya demineralisasi email, dentin, dan sementum. Tujuan penelitian adalah untuk membedakan nilai kekasaran permukaan semen glass ionomer (GIC) dan modifikasi resin semen glass ionomer (RMGIC) akibat efek cairan lambung buatan.  Metode: Penelitian yang dilakukan merupakan penelitian eksperimental murni secara in vitro. Sampel dipersiapkan sebanyak 40 buah, yang terdiri dari 20 sampel semen glass ionomer (GIC) dan 20 sampel modifikasi resin semen glass ionomer (RMGIC). Seluruh sampel dibagi ke dalam 4 kelompok, masing-masing terdiri dari 10 sampel yaitu (1) kelompok GIC direndam dalam saliva buatan, (2) kelompok RMGIC direndam dalam saliva buatan, (3) kelompok GIC direndam dalam cairan lambung buatan selama 3 kali 7 menit dan setelahnya direndam kembali dalam saliva buatan, dan (4) kelompok RMGIC direndam dalam cairan lambung buatan selama 3 kali 7 menit dan setelahnya direndam kembali dalam saliva buatan. Perendaman dilakukan selama 9 hari. Nilai kekasaran diukur dengan menggunakan surface roughness tester (Profilometri). Hasil dianalisis secara statistik dengan menggunakan uji ANAVA dan analisis post-hoc dengan menggunakan t-test. Hasil: Terdapat perbedaan nilai kekasaran permukaan semen glass ionomer (GIC) dan modifikasi resin semen glass ionomer (RMGIC) akibat efek cairan lambung buatan. Simpulan: Paparan cairan asam lambung pada pasien GERD dapat mempengaruhi kekasaran permukaan bahan restorasi GIC dan RMGIC. Kata kunci: Gastroesophageal reflux disease, Kekasaran permukaan, semen glass ionomer, modifikasi resin semen glass ionomer, profilometri ABSTRACTIntroduction: Gastroesophageal reflux disease (GERD) is defined as involuntary muscle relaxing of the upper esophageal sphincter, which allows refluxed acid to move upward through the esophagus into the oral cavity. The gastric acid has pH between 1 and 1.5, far below the critical pH of 5.5 at which tooth enamel will dissolve. Gastric juice has been shown to demineralize enamel, dentin, and root cementum. Methods: Fourthy samples of each restorative material, a conventional glass ionomer cement (20 samples) and a resin modified glass ionomer cement (20 samples), were prepared and divided into four groups, each group consist of 10 samples. Group (1) group of GIC immersed in simulated saliva and group (2) group of RMGIC immersed in simulated saliva, both control groups immersed for 9 days. Group (3) were group GIC and group (4) were RMGIC, both groups immersed in simulated saliva for 9 days and in between both groups immersed in gastric juice every 3 times a day for 7 minute. Each group subjected to profilometric analysis. The profilometric values were statistically analyzed using ANOVA and 2-way analysis of variance (post-hoc). Results: There are differences between GIC and RMGIC after immersion in gastric juice. Conclusion: Surface roughness of all tested materials were affected by the simulated gastric juice.Keywords: Gastroesophageal reflux disease, surface roughness, glass ionomer cement, resin modified glass ionomer cement, profilometer

EFEITO DO DESAFIO EROSIVO IN VITRO NA MASSA E RUGOSIDADE SUPERFICIAL DE DIFERENTES MATERIAIS RESTAURADORES

2016 ◽  
Author(s):  
Thereza Christina Lopes Coutinho
Keyword(s):  
Surface Roughness ◽  
Orange Juice ◽  
Composite Resin ◽  
Soft Drink ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
All Solutions ◽  
Post Hoc ◽  
Ionomer Cement

RESUMO O objetivo deste estudo in vitro foi avaliar alteração de massa e de rugosidade superficial utilizando balança eletrônica e rugosímetro respectivamente, de quatro materiais odontológicos: resina composta (RC), selante resinoso (SR), cimento de ionômero de vidro resinoso (CIVR) e cimento de ionômero de vidro (CIV) convencional após serem submetidos à desafio erosivo (DE). Foram confeccionados 24 corpos de prova de cada material sendo divididos em 3 grupos (N=8): GI – bebida carbonatada a base de cola (Coca cola®; pH 2.6); GII – suco de laranja a base de soja (Ades®; pH 4.4); e GIII – saliva artificial (SA) (pH 7; controle). DE foi realizado através de imersão nas respectivas soluções (20mL/amostra) durante 3x/5min/dia por cinco dias. As amostras foram armazenadas em SA entre os DE e pernoite. Os dados foram analisados estatisticamente no software SPSS v.20 através dos testes ANOVA, post-hoc de Tukey, Kruskal-Wallis e Student-Newman Keuls com nível de significância de p<0,05. Observou-se que, todos os materiais apresentaram alteração de massa, sendo que RC e SR apresentaram aumento, porém significante (p<0,01) apenas para SR; já CIVR e CIV tiveram perda significativa (p<0,01). Em relação à rugosidade, todas as soluções promoveram alteração, porém não significativa (p>0,05). Houve aumento da rugosidade da RC no suco de laranja e do SR, no refrigerante e SA. O CIV apresentou aumento da rugosidade no refrigerante e o CIVR, redução em todas as soluções. Concluiu-se que, as soluções testadas promoveram redução de massa e o refrigerante aumento de rugosidade apenas para os materiais ionoméricos, principalmente, o convencional. Palavras-chave: Resina composta, Cimento de ionômero de vidro, Selante de sulcos e fissuras, Erosão   ABSTRACT The aim of this in vitro study was to evaluate mass change and surface roughness using analytical scale and profilometer respectively, of four dental materials: composite resin (CR), resin sealant (RS), resin-modified glass-ionomer cement (RMGIC) and glass-ionomer cement (GIC) for restoration after being submitted to erosive challenge (EC). Twenty-four samples of each material were prepared and divided into 3 groups (n=8): GI- cola soft drink (Coca-Cola®; pH 2.6); GII – soya orange juice (Ades®; pH 4.4); and GIII - artificial saliva (AS) (pH 7; control). EC was conducted by immersion in the respective solutions (20ml/sample) for 3x/5min/day during five days. Samples were stored in AS between EC and overnight. Data were statistically analyzed using SPSS v.20 software through ANOVA, Tukey’s post-hoc, Kruskal-Wallis and Student-Newman- Keuls with significance level of p<0.05. It was observed that all materials had mass change, and CR and SR showed an increase, being significant (p<0.01) only for SR; whereas RMGIC and GIC had significant loss (p<0.01). Regarding the surface roughness, all solutions promoted changes, but not significant (p>0.05). There was an increase in roughness of CR in orange juice and SR in soft drink and AS. GIC showed increased roughness in soft drink and RMGIC, reduction in all solutions. It was concluded that, the tested solutions promoted mass reduction and the soft drink increased roughness only for the ionomeric materials, mainly, the self-cured. Keywords: Composite resin, Glass-ionomer cement, Pit and fissure sealant, Erosion  

In Vitro Effect of Simulated Tooth Brushing and Children’s Mouth Rinses on Physical Properties of Glass Ionomer Cement

2020 ◽  
Vol 44 (5) ◽  
pp. 342-347
Author(s):  
Natyla ML Silva ◽  
Victor G Costa ◽  
Letícia M Gonçalves ◽  
Isabella A Gomes ◽  
Marco Aurélio B Paschoal
Keyword(s):  
Surface Roughness ◽  
Glass Ionomer Cement ◽  
Tooth Brushing ◽  
Control Group ◽  
Glass Ionomer ◽  
Intergroup Comparison ◽  
Vitro Effect ◽  
Dependent Samples ◽  
Ionomer Cement

Objective: The present study investigated the erosive potential of children’s mouthrinses on glass ionomer cement (GIC) samples after simulated toothbrushing. Study design: Forty round-shaped samples of GIC were divided into 3 groups: G1- cetylpyridinium chloride, G2- xylitol and triclosan and G3–Malva sylvestris and xylitol and G4–distilled water as a control group. Prior to the main tests, the samples were submitted to the surface roughness measurement (Ra) and weight analysis (W). Afterward, they were brushed twice day (2× / day) for 15 days and immersed in mouthrinses after the last daily brushing. The final surface roughness (R2) and weight (W2) were determined after completing the tooth brushing-mouth rinsing cycles and the real increase in roughness (ΔRa) and real weight loss (ΔW) were calculated. In addition, stereoscopic images taken at 30× magnification. The data was analyzed by one-way ANOVA and Tukey-test post hoc tests for intergroup comparison and the T-test for dependent samples (α = 0.05). Results: Only group G2 showed increased in roughness ΔRa (1.53 ± 0.94) whereas ΔW values were not significant. However, evident cracks and voids were verified for all tested children’s rinses. Conclusion: Thus, children’s mouthrinse containing xylitol / triclosan increased the GIC roughness, especially when associated with brushing.

In Vitro Evaluation of Microleakage and Microhardness of Ethanolic Extracts of Propolis in Different Proportions Added to Glass Ionomer Cement

2016 ◽  
Vol 40 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Mustafa Altunsoy ◽  
Mehmet Tanrıver ◽  
Uğur Türkan ◽  
Mehmet Emin Uslu ◽  
Sibel Silici
Keyword(s):  
Glass Ionomer Cement ◽  
Antibacterial Properties ◽  
Dental Practice ◽  
Glass Ionomer ◽  
Tukey Test ◽  
Ethanolic Extracts ◽  
Post Hoc ◽  
One Way Anova ◽  
Ionomer Cement

Objective: To evaluate the effect of ethanolic extracts of propolis (EEP) addition in different proportions to glass ionomer cement (GIC) on microleakage and microhardness of GIC. Study design: The cement was divided into four groups: one using the original composition and three with 10%, 25%, and 50% EEP added to the liquid and then manipulated. For microleakage assessment, sixty primary molars were randomly divided into four groups (n=15). Standard Class II cavities were prepared and then filled with EEP in different proportions added to GICs. Microleakage test was performed using a dye penetration method. The data were analyzed using one-way ANOVA and Mann - Whitney U tests (α = 0.05). Disc shaped specimens were prepared from the tested GIC to determine Vickers hardness (VHN). The data were analyzed using one-way ANOVA and post hoc Tukey test (α = 0.05). Results: There were no statistically significant differences between the groups in terms of microleakage (p &gt; 0.05). There were statistically significant differences between the VHN values of groups (p &lt; 0.05). Increasing addition of EEP to GIC statistically significantly increased VHN value of GIC (p &lt; 0.05). Conclusions: The addition of EEP to GIC increased the microhardness of the GIC and did not adversely affect the microleakage. Thus, it might be used during routine dental practice due to its antibacterial properties

scholarly journals Protector mechanisms of the association between gastroesophageal reflux disease and asthma: experimental study in rats

2008 ◽  
Vol 45 (3) ◽  
pp. 243-248 ◽  
Author(s):  
Paula Yuri Sugishita Kanikadan ◽  
Jayme Antonio Aboin Sertié ◽  
Ricardo Martins Oliveira-Filho ◽  
Wothan Tavares de Lima
Keyword(s):  
Mast Cells ◽  
Gastroesophageal Reflux Disease ◽  
Gastroesophageal Reflux ◽  
Gastric Juice ◽  
Reflux Disease ◽  
Cholinergic System ◽  
Contractile Response ◽  
Allergic Inflammation ◽  
Pulmonary Allergic Inflammation

BACKGROUND: It is well known the association between gastroesophageal reflux disease and asthma. The hyperreactivity of the airways is a characteristic of an asthmatic. Many studies associate the increase of the airways reactivity with gastroesophageal reflux disease. AIM: In this study we have evaluated the effect of the intraluminal exposition to gastric juice of trachea on the reactivity to methacholine from rats submitted to a pulmonary allergic inflammation. METHODS: Group of rats were sensitized and challenged with ovalbumin. After 24 hours the animals were sacrificed, and their tracheae were removed to be cultured with gastric juice. The gastric juice was obtained from a donor rat. Subsequently the segments were placed into plastic plates with RPMI-1640 for incubation, under suitable atmosphere and time. After the period of incubation the segments were put into chambers for the analysis of the contractile response to methacholine. RESULTS: We observed reduction in the contractile response of trachea cultured with gastric juice from allergic rats. This result was confirmed by the pharmacological treatments with compound 48/80 and dissodium cromoglicate (mast cells blockade), L-NAME (nitric oxide inhibitor, NO), capsaicin (neuropeptides depletion) and indomethacin (ciclooxigenase inhibitor). CONCLUSIONS: Our results highlight to the existence of a complex interaction between pulmonary allergy and gastric juice in the airways. The involvement of the non-adrenergic non-cholinergic system, NO, prostanoids and mast cells are directly related to this interaction. We suggest that the reduced contractile response observed in vitro may represent a protector mechanism of the airways. Despite its presence in the human body it can not be observed due to the predominant effects of excitatory the non-adrenergic non-cholinergic system.

scholarly journals Comparative Evaluation of Voids Present in Conventional and Capsulated Glass Ionomer Cements Using Two Different Conditioners: AnIn VitroStudy

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Mamta Kaushik ◽  
Roshni Sharma ◽  
Pallavi Reddy ◽  
Pallavi Pathak ◽  
Pooja Udameshi ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Glass Ionomer Cement ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Group 4 ◽  
Post Hoc ◽  
Root Surfaces ◽  
One Way Anova ◽  
Ionomer Cement

Thisin vitrostudy evaluated the presence of voids in powder-liquid and capsulated glass ionomer cement. 40 cavities were prepared on root surfaces of maxillary incisors and divided into four groups. Cavities were conditioned with glass ionomer cement liquid (GC Corporation, Tokyo, Japan) in Groups 1 and 3 and with dentin conditioner (GC Corporation, Tokyo, Japan) in Groups 2 and 4. Conventional powder-liquid glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used as a restorative material in Groups 1 and 2. Capsulated glass ionomer cement (GC Fuji II, GC Corporation, Tokyo, Japan) was used in Groups 3 and 4. Samples were sectioned and viewed under stereomicroscope to check for the presence of voids within the cement and at the cement-tooth junction. Data was analyzed using one-way ANOVA and Tukey’s post hoc tests. Group 4 showed statistically significant results (P<0.05) when compared to Groups 1 and 2 for voids within the cement. However, for voids at the margins, the results were statistically insignificant.

scholarly journals In vitro quantitative evaluation of marginal microleakage in class II restorations confected with a glass ionomer cement and two composite resins

2001 ◽  
Vol 15 (4) ◽  
pp. 277-282 ◽  
Author(s):  
Maria Fernanda Borro BIJELLA ◽  
Maria Francisca Thereza Borro BIJELLA ◽  
Salete Moura Bonifácio da SILVA
Keyword(s):  
Glass Ionomer Cement ◽  
Class Ii ◽  
Deionized Water ◽  
Composite Resins ◽  
Glass Ionomer ◽  
Dye Penetration ◽  
Significant Difference ◽  
Distal Direction ◽  
Ionomer Cement

This study evaluated, in vitro, marginal microleakage in class II restorations confected with the glass ionomer cement Vitremer and with the composite resins Ariston pHc and P-60. The aims of the study were to assess the effect of thermocycling on those materials and to evaluate two methods utilized in the analysis of dye penetration. Sixty premolars divided in three groups were utilized; the teeth had proximal cavities whose cervical walls were located 1 mm below the cementoenamel junction. Half of the test specimens from each group underwent thermocycling; the other half remained in deionized water, at 37ºC. The specimens were immersed, for 24 hours, in a basic 0.5% fuchsin solution at 37ºC. For the analysis of microleakage, the specimens were sectioned in a mesio-distal direction, and the observation was carried out with the software Imagetools. The results were evaluated through the 2-way ANOVA and through the Tukey’s test. All groups presented marginal microleakage. The smallest values were obtained with Vitremer, followed by those obtained with the composite resins P-60 and Ariston pHc. There was no statistically significant difference caused by thermocycling, and the method of maximum infiltration was the best for detecting the extension of microleakage.

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