scholarly journals Antimicrobial Effects of Dental Luting Glass Ionomer Cements onStreptococcus mutans

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Sina Klai ◽  
Markus Altenburger ◽  
Bettina Spitzmüller ◽  
Annette Anderson ◽  
Elmar Hellwig ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Human Saliva ◽  
Negative Control ◽  
Glass Ionomer ◽  
Fluoride Ions ◽  
Luting Cements ◽  
Antimicrobial Effects ◽  
Antimicrobial Potential

Objective. To reduce secondary caries, glass ionomer luting cements are often used for cementing of indirect restorations. This is because of their well-known antimicrobial potential through the release of fluoride ions. The aim of thisin vitrostudy was to investigate the antimicrobial effect of five dental luting cements which were based on glass ionomer cement technology.Methods. Five different glass ionomer based luting cements were tested for their antimicrobial effects onStreptococcus mutansin two different experimental setups: (i) determination of colony-forming units (CFUs) in a plate-counting assay; (ii) live/dead staining (LDS) and fluorescence microscopy. All experiments were conducted with or without prior treatment of the materials using sterilized human saliva. Antimicrobial effects were evaluated for adherent and planktonic bacteria. Bovine enamel slabs (BES) were used as negative control. BES covered with 0.2% chlorhexidine (CHX) served as positive control.Results. Each of the tested materials significantly reduced the number of initially adhered CFUs; this reduction was even more pronounced after prior incubation in saliva. Antimicrobial effects on adherent bacteria were confirmed by live-dead staining.Conclusion. All five luting cements showed an antimicrobial potential which was increased by prior incubation with human saliva, suggesting an enhanced effectin vivo.

scholarly journals In vitro and in vivo evaluations of glass-ionomer cement containing chlorhexidine for Atraumatic Restorative Treatment

2017 ◽  
Vol 25 (5) ◽  
pp. 541-550 ◽  
Author(s):  
Cristiane Duque ◽  
Kelly Limi Aida ◽  
Jesse Augusto Pereira ◽  
Gláucia Schuindt Teixeira ◽  
Angela Scarparo Caldo-Teixeira ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Atraumatic Restorative Treatment ◽  
Glass Ionomer ◽  
Restorative Treatment ◽  
Ionomer Cement

Comparison of the Solubility of Conventional Luting Cements with that of the Polyacid Modified Composite Luting Cement and Resin-modified Glass Ionomer Cement

2016 ◽  
Vol 17 (12) ◽  
pp. 1016-1021 ◽  
Author(s):  
Mathew Thomas ◽  
Mohammed Mustafa ◽  
Reshma Karkera ◽  
AP Nirmal Raj ◽  
Lijo Isaac ◽  
...  
Keyword(s):  
Zinc Phosphate ◽  
Glass Ionomer Cement ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Time Intervals ◽  
Luting Cements ◽  
Luting Cement ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

ABSTRACT Introduction This study was planned to find the solubility of the conventional luting cements in comparison with that of the polyacid-modified composite luting cement and recently introduced resin-modified glass ionomer cement (RMGIC) with exposure to water at early stages of mixing. Materials and methods An in vitro study of the solubility of the following five commercially available luting cements, viz., glass ionomer cement (GIC) (Fuji I, GC), zinc phosphate (Elite 100, GC), polyacid-modified resin cement (PMCR) (Principle, Dentsply), polycarboxylate cement (PC) (Poly - F, Dentsply), RMGIC (Vitremer, 3M), was conducted. For each of these groups of cements, three resin holders were prepared containing two circular cavities of 5 mm diameter and 2 mm depth. All the cements to be studied were mixed in 30 seconds and then placed in the prepared cavities in the resin cement holder for 30 seconds. Results From all of the observed luting cements, PMCR cement had shown the lowest mean loss of substance at all immersion times and RMGIC showed the highest mean loss of substance at all immersion times in water from 2 to 8 minutes. The solubility of cements decreased by 38% for GIC, 33% for ZnPO4, 50% for PMCR, 29% for PC, and 17% for RMGIC. Conclusion The PMCR cement (Principle-Dentsply) had shown lowest solubility to water at the given time intervals of immersion. This was followed by PC, zinc phosphate, and GIC to various time intervals of immersion. How to cite this article Karkera R, Nirmal Raj AP, Isaac L, Mustafa M, Reddy RN, Thomas M. Comparison of the Solubility of Conventional Luting Cements with that of the Polyacid Modified Composite Luting Cement and Resin-modified Glass Ionomer Cement. J Contemp Dent Pract 2016;17(12):1016-1021.

scholarly journals Profile of Fluoride Release from a Nanohybrid Composite Resin

2015 ◽  
Vol 3 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Raquel Assed Bezerra Silva ◽  
Fernanda Regina Ribeiro Santos ◽  
Augusto Cesar Cropanese Spadaro ◽  
Ana Cristina Morseli Polizello ◽  
Andiara De Rossi ◽  
...  
Keyword(s):  
Composite Resin ◽  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Positive Control ◽  
Negative Control ◽  
Fluoride Release ◽  
Fluoride Ions ◽  
Significance Level ◽  
Nanohybrid Composite

The aim of this study was to evaluate in vitro the amount and profile of fluoride release from a fluoride-containing nanohybrid composite resin (Tetric® N-Ceram) by direct potentiometry. Thirty specimens (5 mm diameter x 3 mm high; n=10/material) were made of Tetric® N-Ceram, Vitremer® resin-modified glass ionomer cement (RMGIC) (positive control) or Filtek® Z350 nanofill composite resin (negative control). The specimens were stored individually in plastic tubes containing 1 mL of artificial saliva at 37°C, which was daily renewed during 15 days. At each renewal of saliva, the amount of fluoride ions released in the solution was measured using a fluoride ion-selective electrode with ion analyzer, and the values obtained in mV were converted to ppm (µg/mL). Data were analyzed statistically by ANOVA and Tukey’s post-hoc test at a significance level of 5%. The results showed that the resins Tetric® N-Ceram and Filtek® Z350 did not release significant amounts of fluoride during the whole period of evaluation (p>0.05). Only Vitremer® released significant amounts of fluoride ions during the 15 days of the experiment, with greater release in first 2 days (p<0.05) and stabilization in the subsequent days (p>0.05). In conclusion, the nanohybrid composite resin Tetric® N-Ceram did not present in vitro fluoride-releasing capacity throughout the 15 days of study.

scholarly journals In Vitro Tensile Strength of Luting Cements on Metallic Substrate

2014 ◽  
Vol 25 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Iara A. Orsi ◽  
Fernando K. Varoli ◽  
Carlos H.P. Pieroni ◽  
Marly C.C.G. Ferreira ◽  
Eduardo Borie
Keyword(s):  
Tensile Strength ◽  
Zinc Phosphate ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Metallic Substrate ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Luting Cements ◽  
Ionomer Cement

The aim of this study was to determine the tensile strength of crowns cemented on metallic substrate with four different types of luting agents. Twenty human maxillary molars with similar diameters were selected and prepared to receive metallic core castings (Cu-Al). After cementation and preparation the cores were measured and the area of crown's portion was calculated. The teeth were divided into four groups based on the luting agent used to cement the crowns: zinc phosphate cement; glass ionomer cement; resin cement Rely X; and resin cement Panavia F. The teeth with the crowns cemented were subjected to thermocycling and later to the tensile strength test using universal testing machine with a load cell of 200 kgf and a crosshead speed of 0.5 mm/min. The load required to dislodge the crowns was recorded and converted to MPa/mm2. Data were subjected to Kruskal-Wallis analysis with a significance level of 1%. Panavia F showed significantly higher retention in core casts (3.067 MPa/mm2), when compared with the other cements. Rely X showed a mean retention value of 1.877 MPa/mm2 and the zinc phosphate cement with 1.155 MPa/mm2. Glass ionomer cement (0.884 MPa/mm2) exhibited the lowest tensile strength value. Crowns cemented with Panavia F on cast metallic posts and cores presented higher tensile strength. The glass ionomer cement showed the lowest tensile strength among all the cements studied.

scholarly journals Modifications of Glass Ionomer Cement Powder by Addition of Recently Fabricated Nano-Fillers and Their Effect on the Properties: A Review

2019 ◽  
Vol 13 (03) ◽  
pp. 470-477 ◽  
Author(s):  
Imran Alam Moheet ◽  
Norhayati Luddin ◽  
Ismail Ab Rahman ◽  
Thirumulu Ponnuraj Kannan ◽  
Nik Rozainah Nik Abd Ghani ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Nano Particles ◽  
In Vivo Studies ◽  
Original Research ◽  
Nano Particle ◽  
Glass Ionomer ◽  
Tooth Structure ◽  
Ionomer Cement

AbstractThe aim of this article is to provide a brief insight regarding the recent studies and their recommendations related to the modifications to glass ionomer cement (GIC) powder in order to improve their properties. An electronic search of publications was made from the year 2000 to 2018. The databases included in the current study were EBSCOhost, PubMed, and ScienceDirect. The inclusion criteria for the current study include publication with abstract or full-text articles, original research, reviews or systematic reviews, in vitro, and in vivo studies that were written in English language. Among these only articles published in peer-reviewed journals were included. Articles published in other languages, with no available abstract and related to other nondentistry fields, were excluded. A detailed review of the recent materials used as a filler phase in GIC powder has revealed that not all modifications produce beneficial results. Recent work has demonstrated that modification of GIC powder with nano-particles has many beneficial effects on the properties of the material. This is due to the increase in surface area and surface energy, along with better particle distribution of the nano-particle. Therefore, more focus should be given on nano-particle having greater chemical affinity for GIC matrix as well as the tooth structure that will enhance the physicochemical properties of GIC.

scholarly journals Re-mineralization potential, shear bond strength and hydration characteristics of experimentally prepared tri-calcium aluminate phase-modified glass ionomer cement on sound and caries-affected dentin (An in vitro/in vivo study)

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
M. M. Radwan ◽  
H. K. Abd EL-Hamid ◽  
Shaymaa M. Nagi
Keyword(s):  
Bond Strength ◽  
Calcium Aluminate ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
X Ray ◽  
Hydration Characteristics ◽  
Ionomer Cement

Abstract Background This study aimed to in vivo and in vitro evaluate the remineralization potential and shear bond strength (SBS) of experimentally prepared tri-calcium aluminate (C3A)-modified glass ionomer cements on sound and artificial caries-affected dentin (CAD). A pure tricalcium aluminate (C3A) phase prepared via solid state reaction at elevated temperature from chemically pure calcium carbonate and alumina, to formulate ceramic composite of composition: 75% C3A, 15% CaSO4·2H2O and 10% Bi2O3. The influence of artificial saliva solution on the hydration characteristics and microstructure of the synthesized composite was investigated by X-ray diffraction (XRD) analysis, FTIR spectral analysis, pH determination and scanning electron microscope (SEM) in comparison with distilled water curing medium. Modified cements of C3A glass ionomers (C3A-CGIC) were prepared by addition of the experimentally prepared C3A to the powder component of the conventical glass ionomer cement (CGIC). Five and 10 wt% of C3A- CGICs powder were prepared and compared to CGIC. Cements were applied in prepared class V cavities in rabbits’ teeth either to sound or artificial CAD. All rabbits were killed after 15 days, and then, Ca and P wt% were evaluated at the cement–dentin interface using Energy-Dispersive X-ray Analysis. Specimens for SBS evaluation were prepared for the tested cements bonded either to sound or artificial CAD, then tested using universal testing machine. Results The XRD results indicate that there is an acceleration effect on the hydration reactions and decrease in the rate of conversion process of C3A phase composite due to the presence of free ions in saliva solution which was emphasized by the results of the IR spectral bands of the hydrated paste samples. The SEM micrographs showed a more-dense microstructure with large accumulations of aluminate hydrate crystals of samples cured under saliva solution. Results of the prepared C3A-CGICs showed that 10wt% C3A-GIC group had the highest statistically significant mean Ca, P wt% and SBS values on CAD compared to 5wt% C3A-GIC and CGIC. Conclusions 10 wt% C3A-GIC has a remineralizing effect on artificial CAD under in vivo conditions, plus its improved bonding to dentin compared to CGIC. Thus, it might be promising restorative/base with advanced remineralization potential and adequate bond strength to both sound dentin and CAD.

scholarly journals Evaluation of Marginal Microgaps of Two Glass-ionomer Cements (GIC) in Dogs and Sheep in vivo

2006 ◽  
Vol 75 (3) ◽  
pp. 403-410
Author(s):  
M. Figurová ◽  
V. Ledecký ◽  
S. Štvrtina
Keyword(s):  
Glass Ionomer Cement ◽  
Permanent Teeth ◽  
Glass Ionomer ◽  
Time Intervals ◽  
Fluoride Ions ◽  
Dental Hard Tissues ◽  
Two Samples ◽  
Methyl Metacrylate ◽  
Ionomer Cement

The aim of the experiment was to evaluate the marginal microgaps of two ionomer cements: Kavitan Plus (Spofa Dental) and Vitremer (3M ESPE) in dog and sheep dentition in vivo. Dentitions of sheep and dogs were restored in vivo with a conventional, glass polyalkenoic, chemically activated cement Kavitan Plus with hydrophilic properties capable and with a resinmodified glass-ionomer cement Vitremer with light-induced polymerization and autopolymerization reaction of methyl metacrylate group. The parameters of glass-ionomers were evaluated in 6 groups of animals, 2 animals in each, at various time intervals (after 1, 4 and 6 months in dogs and 3, 6 and 9 months in sheep, starting from the beginning of the experiment). The restorative materials were placed to buccal surfaces of permanent teeth. At the intervals specified, under general injection anaesthesia, throughout the experiment we extracted 24 teeth from sheep and 30 from dogs. When processing the samples of dog's teeth two samples were damaged. One month after the placement, Kavitan plus restorations became loose only in one case in dogs (80% successfulness). In sheep two Kavitan Plus restorations became loose after 9 months (50% successfulness). During the experiment we observed neither cracks nor marginal discoloration in both Kavitan Plus and Vitremer restorations. Statistically significant (P = 0.04) differences were observed in the dentin of dogs receiving glass-ionomer Vitremer restorations which exhibited lower marginal microgaps. The remaining results were non- significant (ANOVA test). Fluoride ions released from GIC support the treatment of dental hard tissues. These materials could be used as definitive restorations of class A - D cavities in dogs and dental cervical caries in sheep as well as underlying layers ofcomposite and amalgam materials.

scholarly journals In vitro and in vivo investigation of the biological and mechanical behaviour of resin-modified glass-ionomer cement containing chlorhexidine

2013 ◽  
Vol 41 (2) ◽  
pp. 155-163 ◽  
Author(s):  
Aline Rogéria Freire de Castilho ◽  
Cristiane Duque ◽  
Thaís de Cássia Negrini ◽  
Nancy Tomoko Sacono ◽  
Andréia Bolzan de Paula ◽  
...  
Keyword(s):  
Mechanical Behaviour ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

scholarly journals Fluoride Release from Restorative Materials

2011 ◽  
Vol 22 (5) ◽  
pp. 355-358 ◽  
Author(s):  
Gabriela Romanini Basso ◽  
Álvaro Della Bona ◽  
Delton Luiz Gobbi ◽  
Dileta Cecchetti
Keyword(s):  
Standard Deviation ◽  
Liquid Membrane ◽  
Glass Ionomer Cement ◽  
Negative Control ◽  
The Other ◽  
Fluoride Release ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Ionomer Cement

The aim of this study was to evaluate in vitro fluoride (F) release from 4 restorative materials (3M ESPE): Ketak Molar Easymix [KME - conventional glass ionomer cement (GIC)]; Rely-X luting 2 [RL2 - resin-modified GIC (RMGIC)]; Vitremer (VIT- RMGIC); and Filtek Z250 [Z250 - negative control]. Disc-shaped specimens were fabricated according to the manufacturer’s instructions and placed into 10 mL of reverse osmosis water at 37°C until the analyses were done using a liquid membrane for selective F ion electrode (Orion 710). F release was evaluated every 6 h in the first day and thereafter daily during 28 days (d). The results were analyzed statistically by two-way ANOVA and Tukey’s test (α=0.05). Mean F release and standard deviation values (in ppm) were: KME: 6 h- 0.34 ± 0.04; 24 h- 1.22 ± 0.30; 7 d- 0.29 ± 0.09; 14 d- 0.20 ± 0.04; 28 d- 0.16 ± 0.01; RL2: 6 h- 2.46 ± 0.48; 24 h-12.33 ± 2.93; 7 d- 1.37 ± 0.38; 14 d- 0.80 ± 0.13; 28 d- 0.80 ± 0.21; VIT: 6 h- 0.98 ± 0.35; 24 h- 4.35 ± 1.22; 7 d- 0.66 ± 0.23; 14 d- 0.40 ± 0.07; 28 d- 0.39 ± 0.08; Z250: 6 h- 0.029 ± 0.001; 24 h- 0.024 ± 0.009; 7 d- 0.023 ± 0.004; 14 d- 0.025 ± 0.001; 28 d- 0.028 ± 0.001. RL2 RMGIC released more F than the other materials in all periods. The greatest release of F occurred in the first 24 h.

scholarly journals Fracture Resistance of Aluminium Oxide and Lithium Disilicate-based Crowns using Different Luting Cements: An in vitro Study

2009 ◽  
Vol 10 (2) ◽  
pp. 51-58 ◽  
Author(s):  
Ahed M. Al-Wahadni ◽  
David L. Hussey ◽  
Nicholas Grey ◽  
Muhanad M. Hatamleh
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Compressive Load ◽  
Aluminium Oxide ◽  
Lithium Disilicate ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Luting Cements

Abstract Aim The aim of this study was to investigate the fracture resistance of two types of ceramic crowns cemented with two different cements. Methods and Materials Forty premolar crowns were fabricated using lithium-disilicate (IPS Empress-2) and glass-infiltrated aluminium-oxide (In-Ceram) ceramic systems. The crowns were divided into four groups (n=10) with Group 1 (IPS Empress-2) and Group 2 (In-Ceram) cemented with glass ionomer cement. Group 3 (IPS Empress-2) and Group 4 (In-Ceram) were cemented with resin cement. Crowns were tested in a universal testing machine at a compressive-load speed of 10 mm/min. Fracture modes were grouped into five categories. One way analysis of variance (ANOVA) and Bonferroni post-hoc tests were used to detect statistical significances (p<0.05). Results The mean (SD) fracture resistance (Newtons) for Groups 1 to 4 were: 245.35 (82.69), 390.48 (67.03), 269.69 (10.33), and 418.36 (26.24). The cement type had no statistical significant effect (p>0.05) on fracture resistance within each ceramic system tested. In-Ceram crowns cemented with either glass ionomer or resin cements exhibited a statistically significantly higher fracture-resistance than IPS Empress-2 crowns (p<0.05). Minimal fracture in the test crowns was the common mode exhibited. Conclusion Fracture resistance of IPS Empress-2 and In-Ceram crowns was not affected by the type of cement used for luting. Clinical Significance Both In-Ceram and IPS Empress-2 crowns can be successfully luted with the cements tested with In-Ceram exhibiting higher fracture resistance than IPS Empress-2. Citation Al-Wahadni AM, Hussey DL, Grey N, Hatamleh MM. Fracture Resistance of Aluminium Oxide and Lithium Disilicate-based Crowns using Different Luting Cements: An in vitro Study. J Contemp Dent Pract 2009 March; (10)2:051-058.

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