scholarly journals Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1700
Author(s):  
Atsushi Kameyama ◽  
Aoi Saito ◽  
Akiko Haruyama ◽  
Tomoaki Komada ◽  
Setsuko Sugiyama ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Zinc Oxide Eugenol ◽  
Restorative Materials ◽  
Ionomer Cement

This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to form a step, which was built up using flowable resin composite. The root canals were irrigated, filled with calcium hydroxide, and sealed using one of six temporary sealing materials (hydraulic temporary restorative material, temporary stopping material, zinc oxide eugenol cement, glass-ionomer cement, auto-cured resin-based temporary restorative material, and light-cured resin-based temporary restorative material) (n = 10 for each material). The samples were thermocycled 500 times and immersed in an aqueous solution of methylene blue. After 2 days, they were cut along the long axis of the tooth and the depth of dye penetration was measured at the dentin side and the built-up composite side. For the margins of the pre-endodontic resin composite build-up, the two resin-based temporary restorative materials showed excellent sealing. Hydraulic temporary restorative material had a moderate sealing effect, but the sealing effect of both zinc oxide eugenol cement and glass-ionomer cement was poorer.

scholarly journals Effect of Energy Drinks on Color Stability of Different Restorative Materials

2021 ◽  
Vol 7 (5) ◽  
Author(s):  
AlSarheed M ◽  
Salama F
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Color Stability ◽  
Energy Drinks ◽  
Glass Ionomer ◽  
Hybrid Resin ◽  
Restorative Materials ◽  
Ionomer Cement

Background: The purpose of this in vitro study was to evaluate the effect of finishing/polishing procedures on color stability of three restorative materials: Nano-hybrid resin composite (NRC), silver glass ionomer cement (SGI), and resin-modified glass ionomer cement (RMGI) exposed to different staining of energy drinks: Barbican, Bison, and Red bull.

Biocompatibility of a Conventional Glass Ionomer, Ceramic Reinforced Glass Ionomer, Giomer and Resin Composite to Fibroblasts: In vitro Study

2013 ◽  
Vol 37 (4) ◽  
pp. 403-406 ◽  
Author(s):  
S Tamilselvam ◽  
MJ Divyanand ◽  
P Neelakantan
Keyword(s):  
Cell Viability ◽  
Mtt Assay ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Glass Ionomer ◽  
Time Periods ◽  
The Impact ◽  
Ionomer Cement

Objective: This aim of this study was at compare the fibroblast cytotoxicicty of four restorative materials - a conventional glass ionomer cement (GC Fuji Type II GIC), a ceramic reinforced glass ionomer cement (Amalgomer), a giomer (Beautifil II) and a resin composite (Filtek Z350) at three different time periods (24, 48 and 72 hours). Method: The succinyl dehydrogenase (MTT) assay was employed. Cylindrical specimens of each material (n=15) were prepared and stored in Dulbecco's modified Eagle medium, following which L929 fibroblasts were cultured in 96 well plates. After 24 hours of incubation, the MTT assay was performed to detect the cell viability. The method was repeated after 48 and 72 hours. The impact of materials and exposure times on cytotoxicity of fibroblasts was statistically analyzed using two way ANOVA (P=0.05). Results: Both time and material had an impact on cell viability, with giomer demonstrating the maximum cell viability at all time periods. The cell viability in the giomer group was significantly different from all other materials at 24 and 72 hours (P<0.05), while at 48 hours giomer was significantly different only with resin composite (P<0.05). Conclusions: Giomers showed better biocompatibility than conventional and ceramic reinforced glass ionomer cements and, resin composite. Ceramic reinforced glass ionomer demonstrated superior biocompatibility compared to conventional glass ionomer.

scholarly journals Evaluation of Chitosan Modified Glass Ionomer Cement for Microleakage under Spectrophotometer - An In-Vitro Study

2021 ◽  
Vol 10 (33) ◽  
pp. 2769-2772
Author(s):  
Arjun Sajjeev ◽  
Ashwini Tumkur Shivkumar ◽  
Sowmya Halasabalu Kalgeri
Keyword(s):  
Social Sciences ◽  
Mechanical Properties ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Evaluation Tool ◽  
Class V ◽  
Ionomer Cement

BACKGROUND Marginal integrity of glass ionomer as a restorative material is an important factor for the longevity of the restoration. Class V and cervical abrasions are the most critical and challenging lesions for restorations. The choice of material for restoring class V and cervical abrasions is glass ionomer cement (GIC). Sensitivity to moisture contact during the early setting stages is the drawback of GIC. To overcome the drawback, modifications of glass ionomer cement were made by the addition of chitosan. Chitosan (CH) is a natural linear polysaccharide obtained partially and fully by deacetylated chitin compounds, which are found in crab and shrimp shells, with properties like nontoxicity, biodegradability, bioadhesive, biocompatibility, and biorenewabilty which has led to its use in various fields. Thus, this study intended to evaluate the microleakage of conventional glass ionomer cement and chitosan modified glass ionomer cement using a spectrophotometer. METHODS 60 teeth extracted for orthodontic propose were selected for the study and randomly divided into two groups, class V cavities were prepared on the buccal surface and samples were restored with conventional glass ionomer cement and chitosan modified glass ionomer cement respectively, teeth were immersed in 0.5 % methylene blue for 24 hours and assessed using a spectrophotometer. RESULTS The data were analysed using the Unpaired T - test, and with statistical package for social sciences (SPSS) for Windows, version 25.0 (IBM Corp., Armonk, N.Y., USA). The confidence interval was set at 95 % and values of P < 0.05 were interpreted as statistically significant. CONCLUSIONS The study concluded that the addition of chitosan improves the mechanical properties of conventional glass ionomer cement, and a spectrophotometer can be used as a better evaluation tool in assessing microleakage. KEY WORDS Chitosan Modified GIC, Glass Ionomer Cement, Microleakage, Spectrophotometer

scholarly journals Effect of alcohol containing and alcohol free mouth rinses on microhardness of three esthetic restorative materials

2014 ◽  
Vol 6 (1) ◽  
pp. 5-8
Author(s):  
Vasundhara Shivanna ◽  
Rucha Nilegaonkar
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Mouth Rinse ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Mouth Rinses ◽  
Restorative Materials ◽  
And Control ◽  
Ionomer Cement ◽  
Daily Application

Abstract Introduction Daily application of mouth rinses has been recommended for the prevention and control of caries and periodontal disease. Aims & Objectives The aim of this study was to evaluate the effect of alcohol-containing and alcohol-free mouth rinses on the microhardness of three restorative materials – resin composite (Filtek Z350XT), light cure glass ionomer cement (Vitremer) and conventional restorative glass ionomer cement (GC Fuji II). Methods Twenty samples of each restorative material were fabricated and their microhardness values were checked at 100g load and 15 seconds dwell time. Ten samples of each restorative material were stored in alcohol containing mouth rinse (Listerine) and ten samples each were stored in alcohol free mouth rinse (Hiora) for 12 hours. At the end of the test period microhardness was measured with a Vickers microhardness tester. Results Alcohol containing mouth rinses reduced the microhardness values of composite and light cure glass ionomer significantly more than alcohol free mouth rinses. Reduction in the microhardness value of conventional restorative glass ionomer cement was similar for both alcohol containing and alcohol free mouth rinses. Conclusion Both mouth rinses showed reduction in microhardness values of all three restorative materials, with more reduction caused due to alcohol containing mouth rinses in composite and light cure glass ionomer. How to cite this article Vasundhara S, Rucha N. Effect of alcohol containing and alcohol free mouth rinses on microhardness of three esthetic restorative materials. CODS J Dent 2014;6;5-8

Evaluation of properties of Glass Ionomer Cement reinforced with Zinc Oxide nanoparticles – An in vitro study

2018 ◽  
Vol 5 (8) ◽  
pp. 16065-16072 ◽  
Author(s):  
Priyanka Agarwal ◽  
Rashmi Nayak ◽  
P. Nagaraj Upadhya ◽  
Kishore Ginjupalli ◽  
Lokendra Gupta
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Vitro Study ◽  
Oxide Nanoparticles ◽  
Glass Ionomer ◽  
Ionomer Cement

scholarly journals Sealing ability of materials used as protective cervical barrier in internal tooth bleaching

RSBO ◽  
2017 ◽  
Vol 14 (2) ◽  
pp. 67-73
Author(s):  
Juan Fernando Ordoñéz-Aguilera ◽  
Rafael Massunari Maenosono ◽  
Denise Ferracioli Oda ◽  
Heitor Marques Honório ◽  
Rafael Francisco Lia Mondelli ◽  
...  
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Rank Correlation ◽  
In Vitro Study ◽  
Tooth Bleaching ◽  
Glass Ionomer ◽  
Sealing Ability ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

The use of a protective cervical barrier (PCB) is very well established to perform a safe internal bleaching; however, there is still no consensus on which material has the best sealing ability. Objective: This in vitro study aimed to evaluate the apical and linear sealing of different PCB materials placed during internal bleaching. Material and methods: This study had two study factors: PCB positioning, divided at two levels (cement-enamel junction [CEJ] and 1mm above the cement enamel junction [CEJ+1]); and PCB material, divided at eight levels (resin composite [RC], glass ionomer cement [GIC], resin-modified glass ionomer cement liner [LRGIC], restorative resin-modified glass ionomer cement [RRGIC], zinc phosphate cement [ZPC], eugenol-free zinc oxide cement [ZOC], provisional filling resin [PFR] and gutta-percha as control [GUT]). Response variables were apical and linear sealing obtained through dye penetration and analyzed with a digital microscope. Data were subjected to two-way analysis of variance followed by Tukey test (p<0.05). Results: The main factor for both apical and linear sealing was the type of material (p<0.01) regardless of their position. RC and ZPC presented the worst sealing values (p<0.05). The Spearman rank correlation coefficient revealed a positive correlation between the apical and linear leakage. Conclusion: The results suggest that RC and ZPC must be avoided as a PCB during internal bleaching procedures.

Sealing ability of materials used as protective cervical barrier in internal tooth bleaching

RSBO ◽  
2017 ◽  
Vol 1 (2) ◽  
pp. 67
Author(s):  
Juan Fernando Ordoñéz-Aguilera ◽  
Rafael Massunari Maenosono ◽  
Denise Ferracioli Oda ◽  
Heitor Marques Honório ◽  
Rafael Francisco Lia Mondelli ◽  
...  
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Tooth Bleaching ◽  
Glass Ionomer ◽  
Sealing Ability ◽  
Resin Modified Glass Ionomer ◽  
Materials Used ◽  
Ionomer Cement

The use of a protective cervical barrier (PCB) is very well established to perform a safe internal bleaching; however, there is still no consensus on which material has the best sealing ability. Objective: This in vitro study aimed to evaluate the apical and linear sealing of different PCB materials placed during internalbleaching. Material and methods: This study had two study factors: PCB positioning, divided at two levels (cement-enamel junction [CEJ] and 1mm above the cement enamel junction [CEJ+1]); and PCB material, divided at eight levels (resin composite [RC], glass ionomer cement [GIC], resin-modified glass ionomer cement liner [LRGIC], restorative resin-modified glass ionomer cement [RRGIC], zinc phosphate cement [ZPC], eugenol-free zinc oxide cement [ZOC],provisional filling resin [PFR] and gutta-percha as control [GUT]). Response variables were apical and linear sealing obtained through dye penetration and analyzed with a digital microscope. Data were subjected to two-way analysis of variance followed by Tukey test (p<0.05). Results: The main factor for both apical and linear sealing was the type of material (p<0.01), regardless of their position. RC and ZPC presented the worst sealing values (p<0.05). The Spearmanrank correlation coefficient revealed a positive correlation between the apical and linear leakage. Conclusion: The results suggest that RC and ZPC must be avoided as a PCB during internal bleaching procedures.

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