scholarly journals Differences in the Amount of Fluoride Release among Fluoride-Releasing Cements

2014 ◽  
Vol 4 (3) ◽  
pp. 78-81
Author(s):  
Takayuki Ueda ◽  
Kaoru Sakurai ◽  
Takashi Koike ◽  
Koichiro Ogami ◽  
Mituhiro Yokomoto ◽  
...  
Keyword(s):  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Fluoride Ion ◽  
Fluoride Release ◽  
Glass Ionomer ◽  
Ion Release ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Bonferroni Test

ABSTRACT Purpose The abutment teeth of removable partial dentures are susceptible to root surface caries and secondary caries, and such caries sometimes result in crown destruction. In particular, in aged patients, this risk increases due to age-associated gingival recession, periodontal disease, decreased amount of saliva, and inadequate brushing caused by decreased finger motor function. Fluoride-releasing materials may prevent such caries. In this study, we evaluated the amounts of fluoride release from various fluoride-releasing cements based on the amount of fluoride release into artificial saliva. Materials and methods In this study, the following three types of cement were used: Vitremer 2 Paste (3M Health Care: V2 hereafter) and Fuji Luting EX (GC: EX hereafter) as resin-modified glass-ionomer cements, and Clearfil SA Luting (Kuraray Medical: SA hereafter) as a fluoride-containing adhesive resin cement. Using the method indicated by the manufactures, 5 samples (diameter, 8 mm; thickness, 2 mm) for each type of cement were prepared. The samples were immersed in artificial saliva (5 ml) and left at room temperature. The artificial saliva used for immersion was replaced every 24 hours until 14 days after the initiation of immersion and every 48 hours thereafter until after 30 days. Fluoride release was measured in the immersion solution using a combination fluoride ion-selective electrode connected to an ion analyzer. For statistical analysis, one-way analysis of variance and the Bonferroni test were performed to compare the amount of fluoride ion release among the groups (? = 0.05). Results The cumulative amount of fluoride ion release 30 days after the initiation of immersion was the highest for V2 (363.6 ± 87.1 μg/mm2), followed in order by EX (115.6 ± 7.9 μg/mm2) and SA (57.4 ± 23.9 μg/mm2). Significant differences were observed even from 1 day after the initiation of immersion between V2 and EX as well as SA. Concerning daily changes, the amount of fluoride ion release after 1 day was the highest for each type of cement; it was the highest for V2 (89.8 ± 13.5 μg/mm2), followed by SA (35.9 ± 8.3 μg/mm2) and EX (34.3 ± 3.2 μg/mm2). The amount of release gradually decreased after 2 days or more. Significant differences were observed from 1 day after the initiation of immersion between V2 and EX as well as SA. A significant difference between EX and SA was present from 2 until 4 days after the initiation of immersion. Conclusion V2 as a resin-modified glass-ionomer cement showed the highest amount of fluoride release, indicating continuous sustained fluoride release. How to cite this article Ogami K, Yokomoto M, Koike T, Ueda T, Tomura K, Sakurai K. Differences in the Amount of Fluoride Release among Fluoride-Releasing Cements. Int J Prosthodont Restor Dent 2014;4(3):78-81.

scholarly journals Biophysical and Fluoride Release Properties of a Resin Modified Glass Ionomer Cement Enriched with Bioactive Glasses

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 494
Author(s):  
Ascensión Vicente ◽  
Francisco Javier Rodríguez-Lozano ◽  
Yolanda Martínez-Beneyto ◽  
María Jaimez ◽  
Julia Guerrero-Gironés ◽  
...  
Keyword(s):  
Cell Migration ◽  
Bond Strength ◽  
Glass Ionomer Cement ◽  
Fluoride Ion ◽  
Fluoride Release ◽  
Glass Ionomer ◽  
Ion Release ◽  
Bioactive Glasses ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

The aim of this study was to evaluate the bond strength, microleakage, cytotoxicity, cell migration and fluoride ion release over time from a resin-modified glass-ionomer cement (RMGIC) enriched with bioactive glasses (BAGs) and a nanohybrid restorative polymer resin agent used as adhesion material in the cemented brackets. One hundred and twenty bovine lower incisors were divided into three groups: (Transbond Plus Self Etching Primer (TSEP)/Transbond XT (TXT), TSEP/ACTIVA, orthophosphoric acid gel/ACTIVA) and brackets were bonded. A bond strength test and microleakage test were applied. A fluoride release test was applied after 60 days for the TXT and ACTIVA group. To evaluate cytotoxicity and cell migration, a cell viability and scratch migration assay were done for each group. p values < 0.05 were considered significant. Regarding bond strength and microleakage test, no significant differences were found between TSEP/TXT and TSEP/ACTIVA. At 6.4 pH, ACTIVA showed a higher degree of fluoride ion release, which increased with acid pH (3.5), with a maximum fluoride secretion at 30 days. MTT assay revealed that TXT reduces the viability of gingival cells with significant differences (p < 0.001) compared to the untreated cells (control group). ACTIVA provides optimal adhesive and microfiltration properties, releases substantial amounts of fluoride ions in both acid and neutral media, and its biocompatibility is greater than that of traditional composite resin adhesive systems.

scholarly journals Effect of cement types on the tensile strength of metallic crowns submitted to thermocycling

2003 ◽  
Vol 14 (3) ◽  
pp. 193-196 ◽  
Author(s):  
Simonides Consani ◽  
Julie Guzela dos Santos ◽  
Lourenço Correr Sobrinho ◽  
Mário Alexandre Coelho Sinhoreti ◽  
Manoel Damião Sousa-Neto
Keyword(s):  
Tensile Strength ◽  
Zinc Phosphate ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Tensile Load ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

The relationship between metallic cast crowns and tensile strength according to cement types submitted to thermocycling was studied. Seventy-two metallic crowns were cast with Verabond II Ni-Cr alloy and cemented in standardized preparations with 10º tapering. Three types of finishing line (45-degree chamfered, 20-degree bevel shoulder and right shoulder) were made with diamond burs on bovine teeth. Twenty-four metallic crowns in each group were randomly subdivided into three subgroups of 8 samples each according to the cement used: SS White zinc phosphate cement, Vitremer resin-modified glass ionomer cement, and Rely X resin cement and were submitted to thermocycling. Retention was evaluated according to tensile load required to displace the metallic cast crowns from tooth preparations with an Instron testing machine. ANOVA and Tukey's test showed a statistically significant difference among luting materials, with greater results for Rely X resin cement (24.9 kgf) followed by SS White zinc phosphate cement (13.3 kgf) and Vitremer resin-modified glass ionomer cement (10.1 kgf). The finishing line types did not influence the tensile resistance of the crowns fixed with the three cements. Increased tensile resistance of metallic crowns fixed on bovine teeth was obtained with resin cement, independent of the finishing line types.

scholarly journals The Influence of Mixing Methods on the Compressive Strength and Fluoride Release of Conventional and Resin-Modified Glass Ionomer Cements

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Gilliard Lima Oliveira ◽  
Ceci Nunes Carvalho ◽  
Edilausson Moreno Carvalho ◽  
José Bauer ◽  
Adriana Mara Araújo Leal
Keyword(s):  
Compressive Strength ◽  
Statistical Difference ◽  
Testing Machine ◽  
Fluoride Ion ◽  
Fluoride Release ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Ion Release ◽  
Resin Modified Glass Ionomer ◽  
One Way Anova

Objective. To evaluate the compressive strength and fluoride ion release of conventional and resin-modified glass ionomer cement mixing methods (hand mix and mechanical mix) compared to ready-to-use ones. Materials and Methods. Two conventional glass ionomer cements (GICs) (Fuji II and Fuji II Caps), two resin-modified GICs (Fuji II LC and Fuji II L Caps), and one ready-to-use GIC (Ionoseal, Voco) were used. For the compressive strength test, cylindrical specimens (6 mm × 4 mm) of each group were prepared. The test was performed in a universal testing machine (EMIC DL2000). For the fluoride release test, specimens were prepared in the form of discs and placed in deionized/distilled water, which were replaced daily for 15 days. The fluoride ion release readings were performed on an electrode (Orion 96-09) connected to a digital ion analyzer (Quimis 0400ISE). The compressive strength data were analyzed with one-way ANOVA, and the ion release data were submitted to repeated measures ANOVA (material vs. time) and Holm–Sidak post test (α = 5%). Results. The one-way ANOVA showed statistical difference between the tested materials (p<0.001). Ionoseal showed the highest values of compressive strength (p<0.001). Mechanical manipulation increased the compressive strength only for conventional GIC, and resin-modified GIC did not present any statistical difference. Conventional GIC (mechanical mix) showed higher fluoride release on first day than the other groups tested. Conclusion. There was influence of the mixing methods of the materials on the compressive strength and fluoride release pattern of the glass ionomer cements.

scholarly journals Fluoride Release and Uptake Capability of Glass-ionomer Cements and Compomers Used as Dental Restorative Materials

2019 ◽  
Vol 56 (3) ◽  
pp. 548-553
Author(s):  
Zsigmond Lorand Makkai ◽  
Melinda Szekely ◽  
Zita Fazakas ◽  
Levente Mester Nagy ◽  
Kinga Matyas Barta ◽  
...  
Keyword(s):  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Treated Group ◽  
Control Group ◽  
Fluoride Ion ◽  
Fluoride Release ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Control Groups ◽  
Secondary Caries

Dental caries and secondary caries are the most common problems in dentistry. Many studies provided evidence for the anticariogenic effect of fluorides. The incidence of secondary caries is decreased in teeth restored with fluoride releasing materials. The purpose of the present in vitro study is to evaluate the fluoride release and uptake capability of two glass-ionomer cements and two compomers. A total number of 60 specimens were prepared according to the manufacturer�s instructions using silicone molds. The specimens were transferred in plastic containers containing artificial saliva (pH=7), incubated at 37�C for 24 h and divided in three subgroups: control group, varnish treated group and dentifrice treated group. The fluoride ion content was measured on five times during a period of 30 days using an Orion 720A fluoride meter with 9609 BN fluoride ion electrode. The self-curing glass-ionomer cement released the highest amounts of fluoride ions at the beginning and after the one month study period. The samples of the four materials tested in the varnish treated groups showed significant differences compared to their control groups on the second day. Dentifrice treated groups did not show significant differences compared to their control groups, except values measured after 30 days. Application of fluoride varnish produced an increase of fluoride release for the first 24 h in case of all materials. However, results suggest that the use of fluoridated dentifrice would be more effective in caries prevention due to their fluoride uptake capability.

scholarly journals Effects of Incorporation of Marine Derived Hydroxyapatite on the Microhardness, Surface Roughness, and Fluoride Release of Two Glass-Ionomer Cements

2021 ◽  
Vol 11 (22) ◽  
pp. 11027
Author(s):  
Maja Bilić-Prcić ◽  
Ivan Šalinović ◽  
Sevil Gurgan ◽  
Uzay Koc Vural ◽  
Silvana Jukić Krmek ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Glass Ionomer Cement ◽  
Fluoride Release ◽  
Test Results ◽  
Glass Ionomer ◽  
Experimental Glass ◽  
Hardness Tester ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Post Hoc

Background: The aim of this study was to evaluate the effects of incorporation of hydroxyapatite (HA) derived from cuttlefish bone on the microhardness, surface roughness (SR), and fluoride release (FR) of conventional cure, and resin-modified glass-ionomer cement. Methods: There were four groups for each tested material; experimental glass-ionomer were made by addition and of 2, 5, and 10 wt % HA respectively to conventional glass-ionomers Fuji II LC and Fuji IX GP Extra. One group was prepared without the addition of HA particles. For SR and microhardness measurements sectional Teflon molds (5 mm in diameter and 2 mm deep) were used to prepare 10 samples per group (n = 80). The samples were stored in distilled water at 37 °C for 7 days prior to testing. The SR was measured using a contact type profilometer and the microhardness was determined using a Vickers micro-hardness tester at a load of 980 g for 15 s. For FR measurements, there were six samples per group (n = 48), prepared in Teflon molds (8 mm in diameter and 2 mm deep). The FR was measured with an ionoselective electrode in triplicates after 24 h, 7 days, and 45 days. Statistical analysis was performed using one-way ANOVA with Tukey post-hoc test. Results and Conclusion: Microhardness values obtained for Fuji II modified with 10 wt % HA were significantly higher compared to the other two groups tested. Comparison of materials with respect to SR showed significant difference between them (p < 0.0001) with Fuji II and Fuji IX modified with HA having higher SR values. Regarding FR, Fuji IX showed statistically significant higher results than Fuji II, independently of HA modification, and groups modified with 2 and 5 wt % HA showed significantly increased fluoride release in all three time points.

Retentiveness of Metal Coping Luted to Teeth of Uremic Patients Undergoing Hemodialysis Using Five Different Luting Cements

2014 ◽  
Vol 39 (3) ◽  
pp. E101-E108
Author(s):  
MH Ghazy ◽  
MM Aboumadina ◽  
SH Mahmoud
Keyword(s):  
Artificial Saliva ◽  
Testing Machine ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Luting Cements ◽  
Luting Agents ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Uremic Patients ◽  
Post Hoc

SUMMARY Objectives This study aimed to assess the retention of metal copings luted to uremic teeth with five different luting agents. Methods A total of 35 sound natural molars was collected from uremic patients and randomly assigned into five groups (n=7). The teeth were prepared for metal copings using diamond tips and water coolant. Metal copings with a loop on the occlusal surface were fabricated using base metal alloy (Rexillium III). The copings were luted using Fuji I, glass ionomer (GI); Fuji Plus, resin-modified glass ionomer (RMGI); Panavia F 2.0, resin cement; Rely X Unicem, self-adhesive cement (SA); and Adhesor, zinc phosphate cement (ZPh). All specimens were incubated at 37°C for 24 hours, conditioned in artificial saliva for 7 days, and then thermocycled for 5000 cycles (5°C-55°C). The dislodging force was measured using a universal testing machine at a crosshead speed of 2 mm/min. The mode of failure of the loaded adhesive copings was evaluated. Statistical analyses were performed using one-way analysis of variance and Tukey post hoc test. Results GI and SA cements had the highest and the lowest mean retentive strength, respectively (580.90±17.3, 406.6±12.7). There was no significant difference between ZPh, SA, and resin cements. These cements were inferior to GI and RMGI cements (p&lt;0.05), which showed statistically similar retentive strengths. Conclusions The results of this study support the use of glass ionomer and resin-modified glass ionomer cements for luting of metal copings to uremic teeth with retentive preparations.

Microleakage of class II restoration with zirconia inlay: An in vitro study

2019 ◽  
pp. 61-67
Author(s):  
Xuan Anh Ngoc Ho ◽  
Anh Chi Phan ◽  
Toai Nguyen
Keyword(s):  
Glass Ionomer Cement ◽  
Class Ii ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Group 2 ◽  
Self Etch ◽  
Ionomer Cement ◽  
Group 1 ◽  
Composite Restoration

Background: Class II restoration with zirconia inlay is concerned by numerous studies about the luting coupling between zirconia inlay and teeth. The present study was performed to evaluate the microleakage of Class II zirconia inlayusing two different luting agents and compare to direct restoration using bulk fill composite. Aims: To evaluate the microleakage of Class II restorations using three different techniques. Materials and methods: The study was performed in laboratory with three groups. Each of thirty extracted human teeth was prepared a class II cavity with the same dimensions, then these teeth were randomly divided into 3 groups restored by 3 different approaches. Group 1: zirconia inlay cemented with self-etch resin cement (Multilink N); Group 2: zirconia inlay cemented with resin-modified glass ionomer cement (Fuji Plus); Group 3: direct composite restoration using bulk fill composite(Tetric N-Ceram Bulk Fill). All restorations were subjected to thermal cycling (100 cycles 50C – 55 0C), then immersed to 2% methylene blue solution for 24 hours. The microleakage determined by the extent of dye penetration along the gingival wall was assessed using two methods: quantitative and semi-quantitative method. Results: Among three types of restorations, group 1 demonstrated the significantly lower rate of leakage compared to the others, while group 2 and 3 showed no significant difference. Conclusion: Zirconia inlay restoration cemented with self-etch resin cement has least microleakage degree when compare to class II zirconia inlay restoration cemented with resin-modified glass ionomer cement and direct composite restoration using bulk fill composite. Key words: inlay, zirconia ceramic, class II restoration, microleakage.

scholarly journals One Year Clinical Evaluation of White Spot Lesions with Newly Introduced Resin Modified Glass-Ionomer in Comparison to Resin Infiltration in Anterior Teeth: a split mouth randomized controlled clinical trial from Egypt

2020 ◽  
Vol 24 (1) ◽  
pp. 13p
Author(s):  
Shaimaa Mosutafa Rohym ◽  
Asmaa Youssif Harhash ◽  
Mohammed Farid Riad
Keyword(s):  
Glass Ionomer Cement ◽  
Resin Cement ◽  
White Spot ◽  
White Spot Lesions ◽  
Glass Ionomer ◽  
Resin Infiltration ◽  
Anterior Teeth ◽  
Diagnodent Pen ◽  
Resin Modified Glass Ionomer

Objective: to compare the clinical performance of newly introduced resin modified glass ionomer varnish (Clinpro™ XT) versus resin infiltration in treatment of post-orthodontic white spot lesions. Material and Methods: Six participants (70 teeth) were enrolled with post-orthodontic white spot lesions. Randomization was performed according to patient selection for the sealed envelope containing which half will receive the control (resin infiltration (ICON, DMG) and the other will receive the intervention (resin modified glass-ionomer cement varnish (Clinpro™ XT, 3M)). Follow up was done after 1 day, 1 week, 1 month, and 3 months, 6 months and 12 months. The color was assessed by spectrophotometer while the degree of demineralization was measured by Diagnodent pen 2910. Patient satisfaction was assessed using (VAS) Visual analogue scale. Results: Regarding color change, significant improvement in lightness for ICON group, while Clinpro™ XT group, the change was insignificant. The demineralization data revealed significant decrease in demineralization with resin infiltration after immediate application. Clinpro™ XT showed also significant decrease after immediate assessment and significant increase in demineralization in 6 and 12 months. Conclusion: Resin infiltration can be considered more as an alternative treatment rather than fluoride varnish. Clinpro™ XTis considered as a preventive protocol, provided that renewal application is needed after 3 months. Keywords 3M Resin cement; Resin cements; Glass ionomer cements; Fluorides; Follow up studies; Glass ionomer.

scholarly journals Effects of Powdery Cellulose Nanofiber Addition on the Properties of Glass Ionomer Cement

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3077 ◽  
Author(s):  
Takako Nishimura ◽  
Yukari Shinonaga ◽  
Chikoto Nagaishi ◽  
Rie Imataki ◽  
Michiko Takemura ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Cellulose Nanofibers ◽  
Glass Ionomer Cement ◽  
Chemical Properties ◽  
Fluoride Ion ◽  
Strength Testing ◽  
Glass Ionomer ◽  
Ion Release ◽  
Diametral Tensile Strength ◽  
Ionomer Cement

In this study, we aimed to evaluate the effect of the addition of powdery cellulose nanofibers (CNFs) on the mechanical properties of glass ionomer cement (GIC) without negatively affecting its chemical properties. Commercial GIC was reinforced with powdery CNFs (2–8 wt.%) and characterized in terms of flexural strength, compressive strength, diametral tensile strength, and fluoride-ion release properties. Powdery CNFs and samples subjected to flexural strength testing were observed via scanning electron microscopy. CNF incorporation was found to significantly improve the flexural, compressive, and diametral tensile strengths of GIC, and the corresponding composite was shown to contain fibrillar aggregates of nanofibers interspersed in the GIC matrix. No significant differences in fluoride-ion release properties were observed between the control GIC and the CNF-GIC composite. Thus, powdery CNFs were concluded to be a promising GIC reinforcement agent.

scholarly journals Effect of one-bottle adhesive systems on the fluoride release of a resin-modified glass ionomer

2004 ◽  
Vol 12 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Linda Wang ◽  
Marília Afonso Rabelo Buzalaf ◽  
Maria Teresa Atta
Keyword(s):  
Statistical Difference ◽  
Glass Ionomer Cement ◽  
Adhesive System ◽  
Fluoride Release ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Adhesive Systems ◽  
Resin Modified Glass Ionomer ◽  
The One ◽  
In The Beginning

A dhesive systems associated to resin-modified glass ionomer cements are employed for the achievement of a higher bond strength to dentin. Despite this benefit, other properties should not be damaged. This study aimed at evaluating the short-time fluoride release of a resin-modified glass ionomer cement coated with two one-bottle adhesive systems in a pH cycling system. Four combinations were investigated: G1: Vitremer (V); G2: Vitremer + Primer (VP); G3: Vitremer + Single Bond (VSB) and G4: Vitremer + Prime & Bond 2.1 (VPB). SB is a fluoride-free and PB is a fluoride-containing system. After preparation of the Vitremer specimens, two coats of the selected adhesive system were carefully applied and light-cured. Specimens were immersed in demineralizing solution for 6 hours followed by immersion in remineralizing solution for 18 hours, totalizing the 15-day cycle. All groups released fluoride in a similar pattern, with a greater release in the beginning and decreasing with time. VP showed the greatest fluoride release, followed by V, with no statistical difference. VSB and VPB released less fluoride compared to V and VP, with statistical difference. Regardless the one-bottle adhesive system, application of coating decreased the fluoride release from the resin-modified glass ionomer cements. This suggests that this combination would reduce the beneficial effect of the restorative material to the walls around the restoration.

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