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Removable Appliances Classification Quiz

11 Questions

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Removable Appliances Classification Quiz

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Questions and Answers

What is the recommended inclination of the inclined planes of the bite blocks?

80°

60°

45°

70° (correct)

In which situation should the bite block be relieved to allow eruption of the lower molars?

Open bite tendency

Deep bite tendency (correct)

Protrusion of the mandible

Large overjet

What is the purpose of using a modified Twin block appliance?

Allow for full time action due to compliance problems with removable functional appliances.

Procline the upper incisors into a Class II division 1 before starting functional appliances phase. (correct)

Encourage forwards posture of the mandible and change the muscular and soft tissue environment of the jaws.

Encourage passive expansion and remove pressure from the upper lip.

What is the recommended duration for wearing the appliance in monobloc and twin block appliance?

Monobloc: Full time, Twin block: 12 hours Signup and view all the answers

What is a potential reason for terminating treatment with functional appliances?

"Overcorrection" to allow for some relapse after the functional phase. Signup and view all the answers

What is the main purpose of Fränkel appliances?

"Displace cheeks and lips away from teeth and encourage forwards posture of the mandible." Signup and view all the answers

What distinguishes fixed functional appliances from removable functional appliances?

Fixed functional appliances suffer less relapse than removable ones. Signup and view all the answers

At what age is early mixed dentition considered suitable for starting treatment with fixed functional appliances?

8-10 years old Signup and view all the answers

At what stage is treatment for skeletal Class III due to maxillary deficiency best performed?

CS1, CS2 (pre-pubertal stage) Signup and view all the answers

What is the function of a chin cup in orthodontic treatment?

To act through restriction of further maxillary growth by using extra oral means such as face bow and head cap/neck strap. Signup and view all the answers

What indicators are suggested for determining ideal treatment time for Class II mandibular deficiency?

Radiographic indicators Signup and view all the answers