Orthodontic Materials Quiz

What is the primary material component of stainless steel archwires?

• Nickel

• Chromium

• Iron

• Carbon

Which type of archwire is known for its shape memory and superelasticity?

• Stainless steel

• Beta Titanium (TMA)

• Cobalt-Chromium (Elgiloy)

• Nickel-Titanium (NiTi)

What are the two main materials used to make ceramic brackets?

• Stainless steel and gold

• Aluminium oxide and zirconium oxide

• Polycarbonate and polyurethane

• Zinc and titanium

Which of the following is considered a disadvantage of metallic brackets?

• They have low strength

• They are not esthetically pleasing

• They are difficult to bond

• They cause less friction

An ideal archwire, as described in the document, should possess all of the following properties EXCEPT:

• High spring back

• High stiffness

• Good formability

• Low Biohost

What is the main drawback of plastic brackets?

• They are too expensive

• They have high dimensional stability

• They are prone to discoloration

• They are made of ceramic

Alginate is classified as what kind of impression material?

• Reversible hydrocolloid

• Elastomeric

• Irreversible hydrocolloid

• Thermoset plastic

Which of the following cements is NOT listed as a widely used option for cementing orthodontic bands?

• Zinc phosphate cement

• Glass Ionomer

• Zinc polycarboxylate cement

• Zinc oxide eugenol

What is the primary characteristic of Beta Titanium (TMA) that makes it a good choice for patients with a nickel sensitivity?

• Its high stiffness

• Its low friction

• Its nickel-free composition

• Its excellent formability

The document lists which of the following as a disadvantage of alginate impression material?

• It is too rigid

• It has poor dimensional stability

• It has a short shelf life

• It is an expensive material