본문 바로가기
  • Home

Effect of Nano-filled Protective Coating on Microhardness and Wear Resistance of Glass-ionomer Cements

  • Journal of the Korean academy of pediatric dentistry
  • Abbr : J Korean Acad Pediatr Dent
  • 2019, 46(2), pp.226-232
  • DOI : 10.5933/JKAPD.2019.46.2.226
  • Publisher : The Korean Academy Of Pediatric Dentistry
  • Research Area : Medicine and Pharmacy > Dentistry
  • Received : November 5, 2018
  • Accepted : December 1, 2018
  • Published : May 30, 2019

Wonjeong Ryu 1 Howon Park 2 LEE JU HYUN 2 Hyunwoo Seo 2

1강릉원주대학교 치과대학 소아치과학교실 및 구강과학연구소
2강릉원주대학교

Accredited

ABSTRACT

The purpose of this study was to investigate the effect of adding a protective coating on the microhardness and wear resistance of glass ionomer cements (GICs). Specimens were prepared from GIC and resin-modified GIC (RMGI), and divided into 3 groups based on surface protection: (1) no coating (NC), (2) Equia coat coating (EC), and (3) un-filled adhesive coating (AD). All specimens were then placed in distilled water for 24 h. Surface hardness (n = 10) was evaluated on a Vickers hardness testing machine. Wear resistance (n = 10) was evaluated after subjecting the specimen to thermocycling for 10,000 cycles using a chewing simulator. Data were analyzed using a one-way ANOVA and the Kruskal-Wallis test. Surface hardness was highest in the NC groups, followed by the EC and AD groups. The wear depth of GI + NC was significantly higher than that of all RMGI groups. EC did not significantly lower the wear depth compared to AD. Based on these results, it was concluded that although EC does not increase the surface microhardness of GIC, it can increase the wear resistance.

Citation status

* References for papers published after 2022 are currently being built.