From: Survival of maxillary and mandibular bonded retainers 10 to 15 years after orthodontic treatment: a retrospective observational study
Mean (SD)
Median
p25
p50
p75
Mandible
.016″ × .022″ braided SS (N = 47)
2.17 (3.15)
1.0
0
1
3
.027″ TMA (N = 41)
0.66 (1.03)
Total (N = 88)
1.47 (2.52)
0.5
2
Maxilla
.016″ × .022″ braided SS 4 incisors (N = 82)
1.14 (2.93)