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Evaluation of Fluoride Release, pH and Microhardness of Glass Ionomer Cements
被引:2
|作者:
Rodrigues Cardoso, Andreia Medeiros
[1
]
Leitao, Arlley de Sousa
[1
]
Lima Neto, Jose Cordeiro
[2
]
Marques de Almeida, Tomas Lucio
[2
]
Barros Lima, Dened Myller
[3
]
Temoteo Brandt, Lorenna Mendes
[1
]
de Castro, Ricardo Dias
[4
]
Cavalcanti, Alessandro Leite
[5
]
机构:
[1] State Univ Paraiba, Campina Grande, PB, Brazil
[2] State Univ Campina Grande, Sch Dent, Campina Grande, PB, Brazil
[3] Univ Fed Paraiba, Sch Med, BR-58059900 Joao Pessoa, Paraiba, Brazil
[4] Fed Univ Joao Pessoa, Dept Phonoaudiol, Joao Pessoa, Paraiba, Brazil
[5] State Univ Paraiba, Sch Dent, Campina Grande, PB, Brazil
来源:
PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLINICA INTEGRADA
|
2015年
/
15卷
/
01期
关键词:
Hardness Tests;
Fluorides;
Dental Materials;
D O I:
10.4034/PBOCI.2015.151.03
中图分类号:
R78 [口腔科学];
学科分类号:
1003 ;
摘要:
Objective: To evaluate fluoride release, pH and microhardness of glass ionomer cements (GIC). Material and Methods: Four different cements: Vidrion (R) R (G1), Vitro Fil (R) (G2), Maxxion (R) (G3) and Magic Glass (R) (G4) and a composite resin (G5 control group) comprised the sample. Thirty specimens were manufactured (10 mm x 3 mm) and stored in deionized water. Analyses were performed after 24 hours, 7 days and 28 days. The following devices were used for measurements: fluorometer, pH meter and microhardness tester. Data were analyzed by Kruskal-Wallis, Mann-Whitney, Friedman and Wilcoxon tests (a = 0.05) using the SPSS (R) software (Statistical Package for Social Sciences) version 17. Results: GICs were able to release fluoride; however, the amount released decreased with increasing immersion time (p < 0.002). The pH of all products increased over time, the lowest value was identified for Magic Glass (5.93) and the highest for Maxxion (6.94) at time of 24 h. Materials showed significant decrease in surface microhardness, especially G4 for presenting the lowest recorded values (p < 0.05). Conclusion: GICs are fluoride-releasing restorative materials with pH favorable to oral homeostasis and good mechanical behavior.
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页码:23 / 29
页数:7
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