Effect of a novel coating material on the microleakage of glass hybrid restoration in primary teeth : an in vitro study

Abstract EN

Background : glass ionomer restorations are widely employed in the field of pediatric dentistry.

there is a constant demand for a durable restoration that remains func-tional until exfoliation.

this study aimed to measure and compare the effect of a novel coat-ing material (EQUIA Forte Coat) on the microleakage of glass hybrid restoration (EQUIA Forte HT) in primary teeth.

material and method : thirty cavitated (class-II) primary molars were allocated randomly into two groups based on the coat application; uncoated (control) and coated group (experimental).

cavities were prepared by the use of a ceramic bur (CeraBur) and restored with EQUIA Forte HT with or without applying a protective coat (EQUIA Forte Coat).

samples went through the thermocycling process and dipped in 2% methylene blue dye before being sectioned through the center of the restoration.

microleak-age was evaluated digitally using software and a camera connected to a stereomicroscope (30 x magnification) to assess dye penetration of the sectioned samples at both the occlusal and gingival marginal levels.

results : there was a significant difference between the coated and uncoated groups at both occlusal (p=.029) and gingival margin sites (p=.001).

conclusion : higher microleakage values were associated with the uncoated group compared to the coated one.

the application of a protective coating to the restorations is an efficient approach to decrease the microleakage of the restorations that can be usefully adopted in clinical prac-tice.