EFDA Orthodontic Procedures & Appliances 3

Question 1

During orthodontic bracket bonding, what is the primary purpose of acid etching the enamel surface?

Accepted Answer

To create microporosities in enamel that allow the adhesive to mechanically interlock

Answer

To sterilize the enamel surface and eliminate bacteria before bonding

Answer

To remove fluoride from the enamel so the adhesive bonds more easily

Answer

To desensitize the tooth and reduce patient discomfort during bracket placement

Question 2

A fixed lingual retainer bonded to the inside surface of the anterior teeth is designed primarily to:

Accepted Answer

Permanently maintain anterior tooth positions and prevent relapse

Answer

Apply light continuous force to close any residual spacing after treatment

Answer

Serve as a space maintainer in the posterior segment after tooth extraction

Answer

Improve oral hygiene access by holding soft tissue away from teeth

Question 3

Which instrument is specifically designed to place and tuck the ends of metal orthodontic ligature ties beneath the arch wire?

Accepted Answer

Ligature director

Answer

Howe utility pliers

Answer

Sickle scaler

Answer

Band-removing pliers

Question 4

In orthodontic assessment, 'overjet' is defined as:

Accepted Answer

The horizontal distance between the lingual surface of the upper incisors and the facial surface of the lower incisors

Answer

The vertical distance that the upper anterior teeth overlap the lower anterior teeth

Answer

The depth of the curve of Spee measured from the occlusal plane on a study model

Answer

The total width difference between the maxillary and mandibular dental arches

Question 5

What is the primary purpose of a space maintainer placed in a child's mouth after premature loss of a primary tooth?

Accepted Answer

To preserve the arch space so the permanent tooth can erupt into proper position

Answer

To accelerate the eruption of the permanent successor into the space

Answer

To correct a developing crossbite in the primary or mixed dentition

Answer

To whiten the primary teeth adjacent to the extraction site

Question 6

After cementation of a fixed space maintainer, what is the most critical verification step?

Accepted Answer

Verifying the appliance does not interfere with occlusion and that all cement margins are fully sealed

Answer

Confirming the cement color visually matches the tooth shade

Answer

Confirming the patient can floss normally beneath the appliance

Answer

Checking that the appliance spans a minimum of three teeth on each side

Question 7

Which statement best describes the legal scope of an EFDA's role in orthodontic procedures?

Accepted Answer

EFDAs may place and remove orthodontic appliances and take impressions under the supervision of a licensed dentist

Answer

EFDAs may independently diagnose malocclusion and determine treatment plans without dentist input

Answer

EFDAs may independently prescribe retainers and determine retention protocols at treatment completion

Answer

EFDAs may perform surgically assisted orthodontic procedures in coordination with an oral surgeon without additional supervision