scholarly journals Comparison of Antibacterial Activity of Glass-ionomer Cement and Amalgam in Class Two Restorations by Streptococcus mutans Count Analysis at Fixed Intervals: An in vivo Study

2013 ◽  
Vol 14 (3) ◽  
pp. 381-386 ◽  
Author(s):  
Veeresh S Tegginmani ◽  
Beenarani Goel ◽  
Virendra Uppin ◽  
LS Vijay Kumar ◽  
Abhinav Nainani
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Glass Ionomer Cement ◽  
Fluoride Release ◽  
Glass Ionomer ◽  
Fluid Identification ◽  
Carious Lesions ◽  
Significant Difference ◽  
Ionomer Cement

ABSTRACT Aim The purpose of the present study was to determine the influence of glass ionomer cement and amalgam restoration on the level of Streptococcus mutans in the interproximal plaque at periodic intervals and also to compare these values. Materials and methods Seventeen adult patients having two proximal carious lesions on any quadrant of the jaw (either opposing or contralateral) were selected for this study. Carious lesions were diagnosed clinically and from bitewing radiographs. Of the two carious lesions, one was restored with glass ionomer cermet cement and another with amalgam. Plaque samples were collected from interproximal areas before and at 1 month and 3 months post-treatment in a test tube containing 5 ml of modified Stuart's liquid transport fluid. Identification of organisms in the colony was done after Gram staining. Results Comparison of values before restoration and after restoration at 1 month interval showed a statistically significant decrease (p < 0.001). Similarly, comparison of values before and after restorations at 3 months also showed statistically significant decrease (p < 0.02). But comparison of restorations of 1 and 3 months intervals showed no statistical significant difference (p > 0.05). Conclusion Glass ionomer restorations have definite advantage over the amalgam, as the tunnel preparation is more conservative and fluoride release from the glass ionomer inhibits the growth of S. mutans in the plaque. Clinical significance Glass ionomer cement should be preferred over amalgam in conservatively prepared restorations as it reduces the microbial activities due to fluoride release. How to cite this article Tegginmani VS, Goel B, Uppin V, Horatti P, Kumar LSV, Nainani A. Comparison of Antibacterial Activity of Glass-ionomer Cement and Amalgam in Class Two Restorations by Streptococcus mutans Count Analysis at Fixed Intervals: An in vivo Study. J Contemp Dent Pract 2013;14(3):381-386.

scholarly journals Green Synthesis, Characterization of Zinc Oxide Nanoparticles and their Incorporation into Glass Ionomer Cement for Inhibition of Streptococcus mutans

2021 ◽  
Vol 33 (3) ◽  
pp. 515-520
Author(s):  
N. Ahalya ◽  
P. Dhamodhar ◽  
A.D. Vaishnavi
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Glass Ionomer Cement ◽  
Oxide Nanoparticles ◽  
Glass Ionomer ◽  
Uv Visible ◽  
Ionomer Cement

In present study, zinc oxide nanoparticles were synthesised using Syzygium aromaticum and characterized using UV visible spectroscopy, SEM, XRD and FTIR techniques. The characteristic hexagonal structure of the ZnO nanoparticles was confirmed through XRD analysis. The UV-Visible spectrum showed a strong absorbance at 366 nm confirming the presence of ZnO and the peak at 496 cm-1 in FTIR indicated the Zn-O stretch bond. Average size of the zinc oxide nanoparticles obtained from SEM analysis was found to be 86 nm. The zinc oxide nanoparticles exhibited better antibacterial activity than clove extract, when tested against clinical isolates of Streptococcus mutans. The nanoparticles incorporated into the dental restorative material, glass ionomer cement (GIC) were tested against S. mutans and exhibited better antibacterial activity than clove extract. Glass ionomer cement (GIC) did not exhibit antibacterial activity alone, but the incorporation of ZnO nanoparticles into GIC significantly improved antibacterial activity. Hence, ZnO embedded GIC is a promising material in restorative dentistry for preventing the recurrence of dental caries.

scholarly journals Comparative Analysis of Postcementation Hypersensitivity with Glass Ionomer Cement and a Resin Cement: An in vivo Study

2012 ◽  
Vol 13 (3) ◽  
pp. 327-331 ◽  
Author(s):  
Deepak Mehta ◽  
Rohit M Shetty ◽  
Sonia Bhat ◽  
G Srivatsa ◽  
Y Bharath Shetty
Keyword(s):  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Adhesive Resin ◽  
Significant Difference ◽  
Abutment Teeth ◽  
Adhesive Resin Cement ◽  
Postoperative Sensitivity ◽  
Ionomer Cement

ABSTRACT Aim The aim of this clinical study was to compare the postoperative sensitivity of abutment teeth restored with full coverage restorations retained with either conventional glassionomer cement (GIC) or resin cement. Materials and methods Fifty patients received full-coverage restorations on vital abutment teeth. Of these, 25 were cemented with GIC (GC Luting and Lining cement) and the other 25 using an adhesive resin cement (Smartcem 2). A randomized single blind study was undertaken for acquiring and evaluating the data. The teeth were examined before cementation, after cementation, 24 hours postcementation and 7 days postcementation. A visual analog scale was used to help the patient rate hypersensitivity. Results The statistical analysis of the result was done using students paired t-test. No statistically significant difference between Smartcem 2 and GIC was observed, when tested immediately and 24 hours after cementation. Statistically significant difference was seen between Smartcem 2 and GIC when tested 7 days postcementation with a significance level of 0.05. Higher postoperative sensitivity was seen with GIC when compared to resin cement. Conclusion In this study, the incidence of postoperative hypersensitivity after cementation of full-crown restorations with GIC and resin cement was similar when tested immediately. However, 7 days postcementation, abutments with GIC showed higher response compared to resin cement. Clinical significance A self-adhesive resin cement can be the material of choice for luting if presence of postoperative sensitivity is of prime consideration. In case GIC is being used, patient should be informed about the presence of sensitivity for a more prolonged period than with resin cement. How to cite this article Shetty RM, Bhat S, Mehta D, Srivatsa G, Shetty YB. Comparative Analysis of Postcementation Hypersensitivity with Glass Ionomer Cement and a Resin Cement: An in vivo Study. J Contemp Dent Pract 2012;13(3): 327-331.

Antibacterial Activity of Triclosan Incorporated Glass Ionomer Cements – An in vitro Pilot Study

2010 ◽  
Vol 35 (2) ◽  
pp. 157-161 ◽  
Author(s):  
Sajad Sainulabdeen ◽  
Prasanna Neelakantan ◽  
Sindhu Ramesh ◽  
CV Subbarao
Keyword(s):  
Antibacterial Activity ◽  
Pilot Study ◽  
Glass Ionomer Cement ◽  
Diffusion Method ◽  
Control Group ◽  
Glass Ionomer ◽  
Group I ◽  
Significant Difference ◽  
Ionomer Cement

Objectives: The aim of this pilot study was to evaluate the antibacterial activity of glass ionomer cement impregnated with different concentrations (0.5%, 1.25% and 2.5%) of a non releasing bactericide –Triclosan (TC) against two common cariogenic bacteria – Lactobacillus acidophilus and Streptococcus mutans; and to compare Triclosan incorporated GIC with chlorhexidine (CHX) incorporated GIC (2.5%)in terms of antibacterial activity. Methods: Chlorhexidine or Triclosan were added to glass ionomer cement powder to achieve 2.5% CHX – GIC (positive control – Group II), 0.5%, 1.25% and 2.5% TC-GIC (experimental groups III, IV and V respectively) formulations. Restorative glass ionomer cement (Fuji IX GC –Group I) served as negative control. The powder and liquid were mixed and inserted into the wells punched in agar plates (10mm × 4mm). The agar diffusion method was used to determine the antibacterial activity of the cements after 1, 7 and 30 days. Mean values were compared between different study groups using One-way ANOVA and Tukey's HSD procedure at a significance level of 5%. Results: Triclosan incorporated GIC was more effective against L.acidophilus and S.mutans than Chlorhexidine incorporated GIC. Triclosan at a concentration of 2.5% was more effective than at lower concentrations. At all time periods studied, the maximum zone of inhibition against L.acidophilus was produced by Group V. Against S.mutans, on days 1,7 and 30, there was no significant difference between Groups II and IV (p&gt;0.05), while the other groups showed significant differences. Conclusion: The use of triclosan as an antibacterial additive in GIC holds promise and further clinical research is needed in this direction.

scholarly journals Microleakage under orthodontic bands cemented with nano-hydroxyapatite-modified glass ionomer: An in vivo study

2013 ◽  
Vol 83 (6) ◽  
pp. 981-986 ◽  
Author(s):  
Enas T. Enan ◽  
Shaza M. Hammad
Keyword(s):  
Statistical Evaluation ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Significance Level ◽  
Dye Penetration ◽  
Significant Difference ◽  
Orthodontic Patients ◽  
Positive Effect ◽  
Ionomer Cement

ABSTRACT Objectives: To estimate the in vivo effect of nano-hydroxyapatite (HA) modification of banding glass-ionomer cement on microleakage under orthodontic bands. Materials and Methods: Eighty noncarious premolars scheduled for extraction in 20 orthodontic patients were randomly divided into four groups. Grouping was based on the ratio of nano-HA (0%, 5%, 10%, 15% by weight) added to the luting glass-ionomer cement (GIC) Ketac-Cem, which was used for cementation of prefabricated micro-etched orthodontic bands. Dye penetration method was used for microleakage evaluation at the cement-band and cement-enamel interfaces. Statistical evaluation was performed with a Kruskal-Wallis test and a Mann-Whitney U-test, and a Bonferroni-adjusted significance level was calculated. Results: Bands cemented with conventional GIC showed the highest microleakage scores in comparison to those cemented with nano-HA-modified GIC. No significant difference was found between teeth banded with 10% and 15% modified GIC. Conclusions: Modification of the banding GIC with 15% nano-HA revealed a positive effect on reducing microleakage around orthodontic bands.

scholarly journals Effect of Enamel Etching on Tensile Bond Strength of Brackets Bonded In Vivo with a Resin-reinforced Glass Ionomer Cement

2007 ◽  
Vol 77 (1) ◽  
pp. 113-116 ◽  
Author(s):  
Gabriella Rosenbach ◽  
Julio Pedrae Cal-Neto ◽  
Silvio Rosan Oliveira ◽  
Orlando Chevitarese ◽  
Marco Antonio Almeida
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Tensile Bond Strength ◽  
Glass Ionomer ◽  
Significant Difference ◽  
Group 2 ◽  
Ionomer Cement ◽  
Group 1

Abstract Objective: To evaluate the influence of enamel etching on tensile bond strength of orthodontic brackets bonded with resin-reinforced glass ionomer cement. Materials and Methods: The sample group consisted of 15 patients who had indications for extraction of four premolars for orthodontic reasons, equally divided into two different groups according to bracket and enamel preparation. Brackets were bonded in vivo, by the same operator, using a split mouth random technique: Group 1 (control), phosphoric acid + Fuji Ortho LC; Group 2, Fuji Ortho LC without acid conditioning. The teeth were extracted after 4 weeks using elevators. An Instron Universal Testing Machine was used to apply a tensile force directly to the enamel-bracket interface at a speed of 0.5 mm/min. The groups were compared using a Mann-Whitney U-test and Weibull analysis. Results: Mean results and standard deviations (in MPa) for the groups were: Group 1, 6.26 (3.21), Group 2, 6.52 (2.73). No significant difference was observed in the bond strengths of the two groups evaluated (P = .599). Conclusions: Fuji Ortho LC showed adequate shear bond strength and may be suitable for clinical use.

scholarly journals A COMPARATIVE EVALUATION OF FLUORIDE RELEASE, RECHARGE AND RERELEASING ABILITIES OF THREE DIFFERENT RESTORATIVE MATERIALS - AN INVITRO STUDY

2020 ◽  
pp. 1-4
Author(s):  
C Sunil KUMAR ◽  
Obula Reddy ◽  
S. Satta Prasad ◽  
N. Vamsee Krishna ◽  
S. Sunil Kumar ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Fluoride Concentration ◽  
Deionized Water ◽  
Control Group ◽  
Fluoride Release ◽  
Glass Ionomer ◽  
Carious Lesions ◽  
Restorative Materials ◽  
Group B ◽  
Ionomer Cement

INTRODUCTION: The most important property of Fluoride is anti-cariogenic property which aids in remineralization of incipient carious lesions in enamel thereby inhibiting enamel demineralization i.e. it helps in arresting or reversal of incipient enamel lesions. A prolonged exposure of incipient carious lesions to uoride in the aqueous phase achieves the cariostatic effect. OBJECTIVES: The aim of the present study is to evaluate the amount of uoride released by three different Restorative Materialsi.e. Glass Ionomer Cement, Resin Modied Glass Ionomer Cement, Cention on 1st,7th and 15th day followed by Recharge and Re-release after recharging with various Flouride applications. MATERIALS AND METHODOLOGY: Fifteen Disk-shaped specimens for each group (8.5 mm diameter; 3 mm thickness) were prepared from three different restorative materials using cylindrical Teon molds according to manufacturer's instructions. The specimens in each individual group were incubated in a 95% relative humid environment at 37°C for 24 hours. Specimens of each group were immersed in 20 ml deionized water in plastic bottles and stored in the incubator at 37°C, Fluoride concentration was measured using a UV Spectrophotometer after 1st ,7th & 15 days. The samples from each group were now divided into: 3 Sub Groups of ve each. Sub Group A - Control group – No topical uoride application. Sub Group B - The samples were recharged with 2% Neutral Sodium Fluoride solution for 4 minutes and washed with copious deionized water for 10 sec and dried on absorbent paper. Sub Group C - The samples were recharged by hand brushing with a Fluoridated brushing Dentifrice for four minutes and then wiped clean with a tissue and rinsed for 10 sec using copious deionized water and dried. Measurement of uoride Re-release is done by UV Spectrophotometer after 1st ,7th and 15thday after recharge.The results were statistically analysed using analysis of variance (one-way ANOVA) and Tukey Kramer multiple comparison tests (p≤0.05). RESULTS: Independent of the observation time period of thestudy the Conventional GIC released the highest amount of uoride followed by RMGIC & CENTION. The initial burst effect was seen with GIC'S but not with RMGIC, CENTION. After topical uoride application uoride re-release was highest in Sub Group B and GIC had a greater recharging ability followed by RMGIC & CENTION. The uoride re-release was greatest on 1st day followed by rapid return tonear exposure levels. CONCLUSION: From the study it was concluded that, the initialFluoride release was highest from Conventional GIC followedby Resin Modied GIC, CENTION. The Fluoride release was high when recharging with professional regime (2%NaF) as compared to home regime (Toothpaste).

COMPARATIVE EVALUATION OF RESTORATIVE TREATMENTS ON NON-CARIOUS CERVICAL LESIONS OF COMPOSITE AND GLASS IONOMER CEMENT

2020 ◽  
pp. 38-45
Author(s):  
Duong Nguyen Thi Thuy ◽  
Huong Nguyen Thi Kim
Keyword(s):  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Cervical Lesions ◽  
Composite Restorations ◽  
Significant Difference ◽  
Composite Glass ◽  
Group 2 ◽  
Ionomer Cement ◽  
Group 1

Background: Composite and Glass ionomer cement (GIC) are common restorative materials of non carious cervical lesions (NCCLs), which effects are controverisial. The aim of the present study was to compare the result of restorations on NCCLs between Composite and GIC. Materials and Methods: follow-up clinical trial with split-mouth design. Thirty-six patients with 96 NCCLs were divided into 2 groups (n=48/group): Group 1 restored by Composite, Group 2 restored by GIC. The restorations were evaluated at baseline, 1 and 3 months for pulpal sensitivity, restoration morphology and overall success grade. Results: GIC restorations gained 100% Good results for all parameters at 3 time points. Composite showed 87.5%, 93.8% and 97.9% Good results at baseline, 1 and 3 months, sequentially. At 3 weeks recall, 1 Composite restorations (2.1%) showed Moderate results of Retention and 2 Composite restorations (4.2%) changed colour. Conclusions: There was no statistically significant difference seen among the three groups for 3 parameters. Key words: non-carious cervical lesion, Composite, Glass ionomer cement

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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