Functional appliances

Question 1

Functional appliances use the forces of the …… ……… to move teeth

Answer 1

Orofacial muscles

Question 2

Mode of action of functional appliances

Answer 2

muscles of mastication

Question 3

When are functional appliances best to use

Answer 3

Actively growing patients - mixed/early permanent dentition. 1-3 years before peak pubertal growth spurt.

Question 4

What class are functional appliances commonly used for

Answer 4

Class II div I

Question 5

What do you need from the patient for functional appliances

Answer 5

Good co-operation to wear consistently

Question 6

Andresen (activator) is a single block of …… which fits into ….. and ……. arch. Suitable for class II div I.

Answer 6

acrylic
upper
lower

Question 7

Bionator appliance consists of ….. …… activator. Suitable for class II div I.

Answer 7

wire base

Question 8

Twin block (clark) appliance is a separate user and lower appliance which lock in position when …… .. …….

Answer 8

mouth is closed

Question 9

Herbst appliance is a fixed function appliance where ….. and …… arches splint together with cemented framework

Answer 9

maxillary
mandibular