Effect of different cavity conditioners on microleakage of glass ionomer cement with a high viscosity in primary teeth.
BACKGROUND
Glass ionomer cement is a common material used in pediatric dentistry. The aim of this study was to evaluate the microleakage of high-viscosity glass ionomer restorations in deciduous teeth after conditioning with four different conditioners.


METHODS
Fifty intact primary canines were collected. Standard Class V cavities (2 mm × 1.5 mm × 3 mm) were prepared by one operator on all buccal tooth surfaces, including both enamel and dentin. The samples were divided into five groups with different conditioners (no conditioner, 20% acrylic acid, 35% phosphoric acid, 12% citric acid, and 17% ethylenediaminetetraacetic acid [EDTA]). Two-way - ANOVA, Kruskal-Wallis and Mann-Whitney tests were used to compare the means of microleakage between the five groups. The significance level was set at P < 0.05.


RESULTS
There was no significant difference between the means of microleakage in incisal (enamel) and gingival (dentin) margins (P = 0.34). Furthermore, there was no significant difference between the means of microleakage in enamel and dentin margins (P = 0.4). There was a significant difference between the means of microleakage in different groups (P = 0.03).


CONCLUSIONS
Within the limitations of this study, it is suggested that 20% acrylic acid and 17% EDTA be used for cavity conditioning which can result in better chemical and micromechanical adhesion.
Department of Pediatric Dentistry, Dental Faculty, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Romina
R
Mazaheri
Department of Restorative Dentistry, Dental Faculty, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Leila
L
Pishevar
Department of Pediatric Dentistry, Dental Faculty, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Ava Vali
AV
Shichani
Dentist, Isfahan, Iran.
Sanas
S
Geravandi
Cervical restoration; dental leakage; glass ionomer cement; primary tooth