Glass Ionomer Setting Reaction

Play an AI-generated podcast conversation about this lesson

What is the benefit of Glass Ionomer in patients with high caries index?

It has good radio-opacity
It provides anti-cariogenic effect (correct)
It has high dimensional stability
It provides good thermal insulating capacity

Why are Glass Ionomers highly biocompatible with the pulp?

Due to its low pH when mixed
Due to its high acid concentration
Due to its high molecular mobility
Due to its weak acid and high molecular weight (correct)

What is the result of the formation of fluoroapatite and Calcium fluoride crystals in Glass Ionomer?

Increased plaque accumulation
Leakage and recurrent caries
No recurrent caries (correct)
Recurrent caries

What is the main reason for fluoride release in Glass Ionomer?

To arrest the remaining caries left in the cavity and avoid pulp exposure (D) Signup and view all the answers

What is the advantage of low setting contraction of Glass Ionomer?

Decreased marginal leakage (C) Signup and view all the answers

Why is Glass Ionomer used as a base and lining material?

Due to its good thermal insulating capacity (C) Signup and view all the answers

What is the purpose of surface conditioning in Glass Ionomer?

To improve the bonding of the restoration (D) Signup and view all the answers

What is a major disadvantage of Glass Ionomer?

Opacity (B) Signup and view all the answers

What are the three main properties of Glass Ionomer that dictate the type selected?

Fluoride release, chemical bond, and esthetics (A) Signup and view all the answers

What is the purpose of removing undermined enamel in the cavity?

To allow for a stronger bond between the restoration and the tooth (B) Signup and view all the answers

What is the type of joint recommended for the cavity preparation?

CSA à butt joint (90o) without any bevels (B) Signup and view all the answers

What is the recommended duration for surface conditioning and rinsing in Glass Ionomer?

10 seconds conditioning and 10 seconds rinsing (A) Signup and view all the answers

What is the purpose of adding various acids such as itaconic acid, tartaric acid, maleic acid, and tricarbollic acid to glass ionomer?

To increase the reactivity of the material (B) Signup and view all the answers

What is the problem that is countered by freeze-vacuum drying the liquid and adding it to the powder?

Gelation of the liquid (B) Signup and view all the answers

What is the type of reaction involved in the setting of glass ionomer?

Acid-base reaction (B) Signup and view all the answers

What is the primary purpose of using Glass Ionomer as a lining and dentin substitute in the Sandwich technique?

To act as a thermal insulator below metal (C) Signup and view all the answers

Which of the following is an indication for using Glass Ionomer in pediatric restoration?

Pit and Fissure sealant in mixed dentition (C) Signup and view all the answers

What is the purpose of the ion leaching phase in the setting reaction of glass ionomer?

To allow migration of ions to the surrounding aqueous solution (C) Signup and view all the answers

What is the significance of C Factor in Glass Ionomer placement?

It describes the relation between bonded to unbonded surfaces (B) Signup and view all the answers

When is the initial clinical set achieved in the setting reaction of glass ionomer?

After 5-10 minutes of the start of the mix (B) Signup and view all the answers

What is the purpose of the maturation phase in the setting reaction of glass ionomer?

To lead to a more rigid cross-linking of the material (D) Signup and view all the answers

What is the primary advantage of using the Atraumatic Restorative Treatment (ART) technique?

It allows for treatment of caries with minimal instrumentation (C) Signup and view all the answers

What is the purpose of excavating the caries in the Atraumatic Restorative Treatment (ART) technique?

To relieve pain (B) Signup and view all the answers

What is the type of lesion that is associated with mechanical wear with an external object, such as a toothbrush?

Abrasive lesion (D) Signup and view all the answers

What is the proportion of liner/luting cement to base/restoration according to the manufacturer's instructions?

1.5:1 (C) Signup and view all the answers

What is the recommended way of mixing glass ionomer powder and liquid?

Mechanical mixing with capsules (C) Signup and view all the answers

Why is it important to mix the glass ionomer powder and liquid on a cool, clean glass slab?

To prevent the loss of glossy appearance and hinder its adhesive potentials (B) Signup and view all the answers

What is the purpose of coating the glass ionomer with a water-proof sealant after matrix removal?

To develop the physical properties of the glass ionomer (C) Signup and view all the answers

When should the finishing of the glass ionomer restoration be accomplished?

After 24 hours of restoration placement (B) Signup and view all the answers

What is the purpose of using Nanocoat in glass ionomer restorations?

To improve the physicomechanical properties of the glass ionomer (B) Signup and view all the answers