Yeungnam Univ J Med.  2020 Jul;37(3):169-178. 10.12701/yujm.2020.00374.

Current aspects and prospects of glass ionomer cements for clinical dentistry

• Park EY
• Kang S

• KMID: 2506515
• DOI: http://doi.org/10.12701/yujm.2020.00374

Abstract

Glass ionomer cement (GIC) is a tailor-made material that is used as a filling material in dentistry. GIC is cured by an acid-base reaction consisting of a glass filler and ionic polymers. When the glass filler and ionic polymers are mixed, ionic bonds of the material itself are formed. In addition, the extra polymer anion reacts with calcium in enamel or dentin to increase adhesion to the tooth tissue. GICs are widely used as adhesives for artificial crowns or orthodontic brackets, and are also used as tooth repair material, cavity liner, and filling materials. In this review, the current status of GIC research and development and its prospects for the future have been discussed in detail.

Keyword

Bioactive glass; Compomer; Glass ionomer cements; Hydroxyapatite; Resin-modified glass ionomer

Figure

• 

  Fig. 1. Model of ionic bond formation with inorganic filler and polyacid. When calcium fluoroaluminosilicate filler and polyacid are mixed, the carboxyl ion of polyacid is ion-bonded with aluminum and calcium ion in the silicate filler.

• 

  Fig. 2. Model of interaction between resin-modified glass ionomer (RMGI) and dental tissue. When the filler, polyacid, and 2-hydroxyethyl methacrylate (HEMA) are mixed and irradiated, HEMA polymerizes and becomes poly-HEMA, acting as a bridge, followed by acid-base reactions of polyacid and filler. Meanwhile, carboxyl residues in polyacid are strongly ionized with calcium present in tooth tissue, allowing RMGI to adhere to teeth.

• 

  Fig. 3. A schematic diagram that binds the nanorod hydroxyapatite (nHA) to the silicate surface. Aminopropyltriethoxysilane (A) is a coupling agent used to conjugate amino groups to the glass surface. The amino acids introduced on the surface of the silicate can react with nHA fixed carboxylic acid to produce silicate-nHA.

Reference

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