Ex Vivo Microleakage Comparison between Glass Ionomers used as Pit and Fissure Sealant

SLY GABRIELA; MISSANA LILIANA; NIEVA NICÓLAS; KAPLAN ANDREA

ACTA ODONTOLOGICA LATINOAMERICANA : AOL.

Acta Odontologica Latinoamericana

Lugar: Buenos Aires; Año: 2015 vol. 28 p. 132 - 137

0326-4815

The aim of this study was to evaluate invitro the marginalmicroleakage of two glass ionomer materials used as pit and fissure sealants.Thirty healthy premolars extracted for orthodontic treatment were randomlyassigned to two groups (n=15) andrespectively sealed with two glass ionomers (Group I, Fuji VII and GroupII, Fuji IX). All teeth were conserved in artificial saliva (NAF) for 10 days,thermocycled (250 cycles; 5ºC, 37ºC and 60ºC), isolated, and immersed in 2%alcohol gentian violet blue solution for 24 h. After washing, teeth wereincluded in acrylic resin and sectioned longitudinally in a bucco-lingualdirection with a Struers-Minitomcutting device. Samples wereanalyzed for leakage using an opticalmicroscope (Olympus BX-60M).  Thesemi-quantitative ranked scale of Williamsand Winter was used to score dye penetration. In Group I the grades were distributed asfollows: Grade 1, 1 sample and Grade 3, 14 samples (Mean 2.87 Median 3, SD0.52). In Group II: Grade 0: 4 samples, Grade 1, 3 samples,  Grade 2, 2 samples and Grade 3, 6 samples(Mean 1.67, Median 2, SD 1.29). Fisher?s exact test showed statisticallysignificant differences between materials (p=0.006).From these results, we concluded that Fuji IX showed better marginal sealingthan Fuji VII when used as a pit and fissure sealant.