Effects of porous-hydroxyapatite incorporated into glass-ionomer sealants.
The purpose of the present study was to evaluate the mechanical and chemical properties of a novel glass ionomer cement for use as a pit and fissure sealant containing a porous hydroxyapatite, namely, apatite ionomer cement (AIC). Control sealant samples were used Fuji III (GIC-S). The experiment sealant samples (AIC-S) consisted of porous spherical hydroxyapatite (HApS) particles added at 28 wt% to GIC-S powder. The GIC-S and AIC-S samples were evaluated through mechanical strength measurements, scanning electron microscopy observations, energy dispersive X-ray spectroscopy analysis, fluoride ion release tests, and antibacterial tests. The flexural strength of the AIC-S was significantly higher than that of GIC-S for each period, 1 h, 24 h and 1 year. The fluoride release dose for AIC-S was consistently higher than that for GIC-S. In addition, the antibacterial properties of AIC-S were superior to those of GIC-S. The novel AIC-S may be a more suitable sealant material for pits and fissures with intact and/or infected enamel.
Department of Pediatric Dentistry, Osaka Dental University.
Yukari
Y
Shinonaga
Kenji
K
Arita
Takako
T
Nishimura
Szu-Yu
SY
Chiu
Hsiu-Hui
HH
Chiu
Yoko
Y
Abe
Mie
M
Sonomoto
Kyoko
K
Harada
Noriyuki
N
Nagaoka
D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D017886:Durapatite / Q000737:chemistry* / Q000494:pharmacology; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D010895:Pit and Fissure Sealants / Q000737:chemistry; D033081:Shear Strength; D013718:Tensile Strength
D000900:Anti-Bacterial Agents; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; D017886:Durapatite