Orthodontic Appliances Quiz

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What type of appliance is the bionator?

Functional appliance (correct)

Open bite appliance

Class III appliance

Standard appliance

What is the main advantage of the bionator?

It is easy to wear due to the lack of acrylic in the palate. (correct)

It is commonly used for Class II malocclusion.

It is easy to repair if it breaks.

It is a fixed appliance that does not require patient compliance.

What is the main disadvantage of the fixed functional appliance?

It requires high patient compliance.

It is not effective for Class II malocclusion.

It has a high percentage of breaking. (correct)

It is not commonly used.

What is the purpose of the buccal extension of the labial bow in the bionator?

Both a and b Signup and view all the answers

What is the key hypothesis behind the Andresen activator?

Both a and b Signup and view all the answers

What is the main characteristic of the Andresen activator?

It is a loose-fitting monobloc appliance that advances the mandible. Signup and view all the answers

What is the minimum daily wear time recommended for functional appliances?

12-15 hours Signup and view all the answers

Which of the following is NOT a patient requirement for using functional appliances?

Severe skeletal problem Signup and view all the answers

What is the purpose of taking a 'working bite' in functional appliance treatment?

To determine the ideal bite position Signup and view all the answers

Which of the following is NOT a mode of action of functional appliances?

Skeletal effects Signup and view all the answers

In a Class II division 1 case, how does a functional appliance affect the incisors?

Upper incisors retrocline, lower incisors procline Signup and view all the answers

What is the ideal anterior gap recommended when positioning the mandible forward for a functional appliance?

2-3 mm Signup and view all the answers

Which type of functional appliance is primarily tooth-borne?

Twin Block Signup and view all the answers

What is the primary advantage of soft tissue-borne functional appliances?

Less dental tipping Signup and view all the answers

Which functional appliance is commonly used to correct Class II malocclusion and has upper and lower bite blocks?

Twin Block Signup and view all the answers

What is the purpose of the acrylic shields in the Frankel functional appliance?

Both A and C Signup and view all the answers

Which functional appliance is considered a combined soft tissue and tooth-borne appliance?

Bionator Signup and view all the answers

What is the primary purpose of using a functional appliance in orthodontic treatment?

To make subsequent orthodontic treatment easier Signup and view all the answers