Flashcards: Restorative Dental Materials — 31 cartões

What does restorative dentistry involve?

Removal of decay or disease and restoring tooth function.

What is the goal of esthetic dentistry?

To recreate teeth with an artistically pleasing appearance.

Name a commonly used dental material in restorative dentistry.

Amalgam.

Name another commonly used dental material besides amalgam.

Composite resin.

Which dental material is used for temporary restorations?

Temporary restorative materials.

What metals mainly compose dental amalgam?

Silver, tin, copper, and zinc mainly compose dental amalgam.

Who faces greater health risks from amalgam, patients or dental personnel?

Dental personnel face greater health risks from amalgam than patients.

Which teeth are mostly restored using amalgam?

Premolars and molars are mostly restored using amalgam.

What is the purpose of condensation in amalgam placement?

Condensation compacts amalgam tightly and helps eliminate excess mercury.

Name one indication for using amalgam restorations.

Amalgam is indicated for stress-bearing areas.

When is amalgam varnish placed under a restoration?

After a liner is used, amalgam varnish is placed under the restoration.

What does amalgam varnish do to dentinal tubules?

It seals dentinal tubules.

How does amalgam varnish protect the tooth from acidic bases?

It reduces microleakage and protects against acidic bases like zinc phosphate.

What is composite resin in dentistry?

A tooth-coloured restorative material used throughout the mouth requiring bonding for adhesion.

What are the main components of composite resin?

An organic BIS-GMA resin matrix, inorganic fillers, coupling agents, and pigments.

For which restorations is composite resin used?

Class I, II, III, IV, V restorations and esthetic corrections like diastema closure.

When is composite resin contraindicated?

In patients with poor hygiene, high caries, cost issues, or heavy occlusal stress.

Why is composite resin placed in increments no thicker than 2 mm?

To reduce polymerization shrinkage that causes open margins and decay.

What must be done before placing each composite resin increment?

Each increment must be cured before placing the next.

How does moisture affect composite resin bonding?

Moisture contamination interferes with bonding.

What curing adjustment is needed for darker composite resin shades?

Darker shades require longer curing times.

What is glass ionomer in dentistry?

A versatile dental material that chemically adheres to teeth and releases fluoride.

How does glass ionomer compare to composite resin in tooth preparation?

It requires less extensive tooth preparation than composite resin.

What should be avoided during the placement of glass ionomer?

Water contact should be avoided while placing glass ionomer.

For which dental applications is glass ionomer especially desirable?

Primary teeth, Class V restorations, sealants, core build-ups, and long-term provisional restorations.

What is a temporary restorative material?

It maintains or restores function and keeps the patient comfortable for a limited time.

What determines the choice between the two major temporary restorative types?

The location and amount of tooth structure requiring restoration.

What is IRM composed of and what properties does it have?

IRM is a reinforced zinc oxide-eugenol material with sedative properties.

When is IRM typically used?

For lost fillings, small enamel pits, primary-tooth restorations near eruption, emergencies, CAMBRA, and as a base.

What defines a provisional restorative material?

It temporarily covers most of a tooth or several teeth and withstands biting forces and wear.

When is a provisional restorative material indicated?

When a cusp is missing or a tooth is prepared for a cast restoration involving the gingival margin.