Orthodontics III Quiz

What are fixed appliances primarily used for?

• To cause tooth movement

• To clean teeth

• To whiten teeth

• To fill cavities

Which component is considered an active element in fixed appliances?

• Brackets

• Arch wires

• Ligature wire

• Bands

What is the primary function of the molar tube in fixed appliances?

• To connect to the brackets

• To provide aesthetic appearance

• To maintain oral hygiene

• To hold the arch wire

Which material is NOT commonly used for arch wires?

• Aluminum

• Gold

• Nickel-titanium

• Stainless steel

What is the main advantage of the Edgewise appliance?

• Limited tooth movement

• Requires less patient compliance

• Ability to move teeth in all three planes of space

• Easier to clean

Which appliance is used for maxillary molar distalization?

• Quad-helix

• Nance appliance

• Pendulum appliance

• Lingual arch

What is a common indication for using Rapid Palatal Expansion (RPE)?

• Severe maxillary constriction

• Class III malocclusion

• Single tooth in crossbite

• Poor oral hygiene

What is a disadvantage of the Nance appliance?

• Requires frequent adjustments

• Uncomfortable for patients

• Difficult to fabricate

• Promotes decay in patients with bad oral hygiene

What is the recommended time to start turning the jackscrew after inserting the appliance?

• 1 hour after insertion

• 15 to 30 minutes after insertion

• 2 hours after insertion

• Immediately after insertion

What is the primary purpose of the Edgewise appliance?

• To expand the palate

• To align teeth in three dimensions

• To reduce the size of the dental arch

• To extract teeth