What is the composition of GIC?

There are three essential ingredients to a glass-ionomer cement, namely polymeric water-soluble acid, basic (ion-leachable) glass, and water [4].

What type of bond is GIC?

26 The chemical bonding between GIC and dental substrate involves the formation of ionic bonds between the carboxylate functional groups in the polyalkenoic acid molecules and calcium ions in the hydroxyapatite.

What component of glass ionomer restorative material is responsible for?

What component of glass ionomer restorative material is responsible for its ability to bond to tooth structure? Polyacrylic acid bonds to calcium and is the primary ingredient of glass ionomer liquid.

What are the properties of GIC?

In contrast, glass-ionomer cements (GICs) have interesting properties such as biocompatibility, bioactivity, fluoride release, excellent coefficient of linear thermal expansion/contraction and modulus of elasticity, as well as being the only restorative material capable of chemically bonding to the tooth structure ⁶ .

What is zinc phosphate cement?

Zinc phosphate cement the one of the oldest and widely used cements, and is commonly used for luting permanent metal restorations and as a base. It is a high-strength cement base, mixed from zinc oxide powder and phosphoric acid liquid.

Glass Ionomer Cement | Dental Cement

Why Vaseline is applied over GIC?

Similarly petroleum jelly also impedes the fluoride release, but to a very less extent. We suggest that in situations where the fluoride release property is more important than other properties it is better to coat the GIC with petroleum jelly or leave the restoration without any coating.

What is the role of water in GIC?

Water is an essential component of glass-ionomer cements, and has several functions in these materials [35]. It is the solvent for the dissolution of the polymeric acid, and allows it to ionise and donate protons, thereby behaving as a Bronsted-Lowry acid [35].

What are the 9 types of GIC?

How does composite bond to GIC?

2 described bonding composite resin to GIC by etching the set GIC with phosphoric acid prior to applying resin bond. The clinical technique described by Mount3 suggests etching the initially set GIC for 15 seconds prior to placing a layer of resin bond to develop a mechanical bond between the two materials.

How many types of GIC are there?

Maximize your returns by laddering GICs

Invest each of those smaller amounts in separate GIC terms: 1-year, 2-year, 3-year, 4-year, 5-year. Then, when each term matures, you can access some of the money if you need it or reinvest in a GIC with a 5-year term.

What is resin modified glass ionomer cement?

Abstract. The resin-modified glass ionomer materials are hybrid materials of traditional glass ionomer cement with a small addition of light-curing resin, and hence exhibit properties intermediate to the two, with some characteristics superior to conventional glass ionomer materials.

What is the best filling material for mouth breather?

Composite fillings are the most widely used dental filling material. They're made of glass or quartz in resin. Your dentist may choose a composite filling if the size of your cavity is small to medium, or if your tooth gets a lot of chewing action.

What is Type 2 glass ionomer cement?

Glass Ionomer Type II is restorative self cured suitable for permanent dental filling. Self-cured. Suitable for permanent dental filling. Chemical setting without shrinkage. Low solubility.

What is glass ionomer filling?

Glass ionomer is essentially a flexible paste, that is used to form a tight seal between the internal tooth (exposed, due to a cavity) and the surrounding environment. It acts as a sealant, allowing the tooth to remain protected.

How do you make a miracle mix?

Does GIC need moisture control?

GIC-containing materials are technique sensitive and moisture control is mandatory for all types of GICs. Water contact at placement or at setting results in dissolution of the material. Light curing of resin-containing GICs should be done in steps when the thickness of the restoration exceeds 2 mm.

Is glass ionomer cement water-based?

Currently, glass-ionomer is the only restorative material that is water-based and like silicate has an anticaries effect. Current esthetic high-strength GICs are considered to be durable restorative dental cements.

What is Miracle mix?

Miracle Mix is a silver alloy - glass ionomer cement developed for use as a core build-up and transitional restorative material for clinical situations where high radiopacity and a strong colour contrast is preferred.

Which tooth filling is safest?

Fillings made from amalgam are fifty percent mercury, with other metals like copper, tin, and zinc that make up the rest. Amalgam or silver fillings have long been considered the best option for dental fillings because they are affordable and durable. In fact, they can last for years with proper care.

Why is a plastic spatula used to mix GIC?

Some dental mixing spatulas are made from plastic (used mainly for mixing glass ionomer cement) because stainless steel would react with the material being mixed. Dental cement mixing spatulas are used in the preparation of dental cements for prosthodontics procedures.

What's the difference between zinc chromate and zinc phosphate?

Zinc chromate is usually considered more effective for corrosion resistance than zinc phosphate. However, zinc chromate is known to be a carcinogen (cancer causing chemical) and in the USA most companies have stopped using zinc chromate as a primer.

Which type of GIC is used for restoration?

Auto cure GIC is preferable as a restorative material to Light cured GIC, or resin modified glass ionomer cement (RMGIC). RMGICs have poor wear resistance on occlusal surfaces and in larger restorations the curing light does not penetrate to the base of the restoration (due to the high opacity).