From: Early treatment of posterior crossbite - a randomised clinical trial
Time(weeks) | Therapy | |
---|---|---|
Total(n= 31) | ||
Mean(SD) | ||
Bonded hyrax | 16.2 (0.6) | |
expansion period (n = 31) | 3.2 (1.2) | |
retention period (n = 31) | 12.6 (1.8) | |
U-bow activator | 36.8 (5.4) | |
expansion period (n = 3) | 5.9 (3.5) | |
retention period (n = 31) | 36.1 (5.5) |