Table 1: Mean OHIP-14 (subscale) scores and standard deviations for all data available at each measurement.

T0 (N=110) T1 (N=392) T2 (N=136) T3 (N=81)
Mean SD Mean SD Mean SD Mean SD
OHIP total 40.6 12.9 37.1 12.4 31.9 10.8 29.5 10.0
1. Functional limitation 4.7 1 2.3 4.1 1 2.0 4.0 1 2.0 4.2 2 1.8
2. Physical pain 6.6 3 2.0 6.5 4 2.1 5.5 4 1.9 5.2 3 1.9
3. Psychological discomfort 6.9 3 2.5 6.3 4 2.3 5.6 4 2.2 4.8 3 2.0
4. Physical disability 5.5 2 2.3 4.9 2 2.2 4.4 2 2.0 4.0 2 1.9
5. Psychological disability 6.4 3 2.2 5.6 3 2.3 4.8 3 2.0 4.2 2 1.7
6. Social disability 5.3 2 2.3 4.9 2 2.2 3.9 1 1.9 3.6 1 1.6
7. Handicap 5.4 2 2.1 4.8 2 2.1 3.9 1 1.8 3.5 1 1.7

1 = lowest score, significantly different from each higher number.
2,3,4 = in the same column, scores with the same number do not differ significantly from each other.