Question 163 · LDEK · Fixed appliances
There are two methods of expanding the palate suture: RPE (rapid palatal expansion) and SPE (slow palatal expansion). Indicate the true statements about RPE:
1) allows you to activate the appliance 0.5-1 mm per day;
2) allows you to activate the appliance 1 mm per week;
3) active treatment lasts about 3 months;
4) active treatment lasts 2-3 weeks;
5) the suture opening rate is more physiological, similar to the rate at which a new bone forms.
The correct answer is:
2) allows you to activate the appliance 1 mm per week;
3) active treatment lasts about 3 months;
4) active treatment lasts 2-3 weeks;
5) the suture opening rate is more physiological, similar to the rate at which a new bone forms.
The correct answer is:
- A. 1,4,5.
- B. 2,3,5.
- C. 2,4.
- D. 1,4.
- E. 1,3.
Hint
Compare the daily versus weekly activation rhythm and the length of the active phase in rapid versus slow expansion.
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