Intro to Fixed Orthodontic Laboratory Techniques

Question 1

What is a transpalatal arch constructed of?

Answer 1

0.9mm HSSW

Question 2

What are the uses of a transpalatal arch?

Answer 2

• anchorage
• rotation
• limited widening or contraction

Question 3

What teeth is a transpalatal arch most commonly attached to?

Answer 3

first permanent molars (with orthodontic SS bands)

Question 4

What is the function of a palatal arch with a nance button?

Answer 4

anchorage

Question 5

What is the Quadhelix appliance constructed from?

Answer 5

0.9mm HSSW in a rigid fixed manner

Question 6

What are the uses of a Quadhelix appliance?

Answer 6

• bilateral expansion
• asymmetrical expansion
• fan style expansion
• rotation of molars
• expansion in cleft palate
• modified to procline incisors
• assist in habit breaking

Question 7

What are the advantages of fixed orthodontics?

Answer 7

• bodily tooth movement
• rotations easily fixed
• can be used in lower + upper arch
• individual force applied to each tooth
• not easily removed by patient
• works 24/7
• precise 3D movement of teeth
• less invasive of tongue space
• minimal palatal coverage