18 Questions
Why are functional appliances used to correct overjet?
To improve profile and smile esthetics
Which type of functional appliance is mostly used to correct Class II malocclusion?
Twin block appliance
In which type of malocclusion is the Frankel appliance typically used?
Class III malocclusion
What is the purpose of the acrylic shields in the Frankel appliance?
To increase bone deposition in the maxilla
Which type of appliance has bite blocks that posture the mandible forward?
Twin block appliance
What is the main function of the soft tissue-borne Frankel appliance?
To control tongue position
What is the purpose of the bionator appliance?
Modify tongue behavior
What is the advantage of the fixed functional appliance mentioned?
Requires minimum patient compliance
Why is the Andresen activator considered a loose-fitting monobloc appliance?
To advance the mandible
Which appliance connects the upper and lower teeth, resulting in constant forward biting?
Fixed functional appliance
What was the original purpose of the bionator appliance?
Modify tongue behavior
Why is the fixed functional appliance not commonly used?
High risk of breakages
What is the purpose of taking a 'working bite' in constructing functional appliances?
To achieve ideal bite registration
Why is it important for the patient to move anteriorly while taking the 'working bite' for functional appliances?
To stretch the muscles needed to generate forces
What is the recommended gap when positioning the mandible forward for functional appliances?
2-3 mm anteriorly and 7-8 mm in the premolar region
Which of the following is a common skeletal requirement for using functional appliances?
Mandibular retrognathism
How do functional appliances primarily affect dental relationships in Class II div I cases?
Create tipping movements with upper incisors retroclination
Which of the following best describes the role of functional appliances in altering skeletal relationships?
Encourage muscle stretching and force generation
Learn about functional appliances in orthodontics, their use in altering skeletal and dental relationships, and patient requirements for using them effectively. Topics include the forces involved, patient cooperation, and coordination with growth spurts.
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