EFDA Orthodontic Procedures & Appliances

Question 1

What is the primary purpose of placing orthodontic separators (spacers) before banding?

Accepted Answer

To create space between teeth for band placement

Answer

To whiten the teeth before treatment begins

Answer

To measure tooth mobility prior to banding

Answer

To apply topical fluoride to interproximal surfaces

Question 2

Which instrument is primarily used to fully seat orthodontic bands onto molar teeth?

Accepted Answer

Band pusher and bite stick

Answer

Explorer and mouth mirror

Answer

Scaler and Gracey curette

Answer

Amalgam plugger and condenser

Question 3

Which cement is most commonly used for cementation of orthodontic bands?

Accepted Answer

Glass ionomer cement

Answer

Zinc oxide eugenol

Answer

Composite resin

Answer

Calcium hydroxide liner

Question 4

What is the primary function of an arch wire in a fixed orthodontic appliance?

Accepted Answer

To apply forces that guide and move teeth along a prescribed path

Answer

To cement orthodontic bands to molar teeth

Answer

To take a registration of the dental arch before treatment

Answer

To secure the removable retainer in place

Question 5

Which type of orthodontic attachment is bonded directly to the facial surface of a tooth using dental adhesive?

Accepted Answer

Direct-bonded bracket

Answer

Orthodontic band

Answer

Molar buccal tube

Answer

Lingual retainer

Question 6

In Angle's classification system, Class II malocclusion is characterized by which molar relationship?

Accepted Answer

Distal position of the mandibular dentition relative to the maxillary dentition

Answer

Normal molar relationship with the mesiobuccal cusp of the upper first molar in the buccal groove of the lower

Answer

Mesial position of the mandibular dentition relative to the maxillary dentition

Answer

Complete absence of posterior occlusal contact in any position

Question 7

What is the primary purpose of wearing a retainer after active orthodontic treatment is completed?

Accepted Answer

To maintain corrected tooth positions and prevent relapse

Answer

To continue moving teeth into even better final positions

Answer

To temporarily replace missing posterior teeth during retention

Answer

To bleach and whiten teeth after bracket removal