Table 4 Comparison of differences between adjacent treatment periods(n = 81)

All; OHIP-14

Class I(n = 35)

−6.4(2.31)*

1.000

−3.71(2.71)*

1.000

−1.98(1.43)*

0.996

Class II(n = 32)

−4.54(2.42)*

1.000

−5.34(1.97)*

1.000

−3.42(1.62)*

1.000

Class III(n = 14)

−4.8(2.22)*

1.000

−6.67(1.77)*

1.000

−2.66(1.56)*

1.000

1 Functional limitation

Class I

−0.38(0.37)

0.284

−0.63(0.87)*

0.583

−0.12(0.55)

0.124

Class II

−0.56(0.88)*

0.428

−0.31(0.29)

0.213

−0.13(0.47)

0.132

Class III

−0.43(0.78)

0.356

−0.64(0.56)*

0.596

0.11(0.58)

0.115

2 Physical pain

Class I

−0.37(0.82)

0.276

−0.63(0.58)*

0.513

−0.03(0.43)

0.055

Class II

−0.92(1.01)*

0.826

−0.38(0.64)

0.311

−0.19(0.42)

0.192

Class III

−0.36(0.66)

0.272

−0.37(0.57)

0.297

0.07(0.70)

0.086

3 Psychological discomfort

Class I

−2.31(1.46)*

1.000

−0.36(0.35)

0.264

−0.37(0.43)

0.276

Class II

−0.12(1.41)

0.137

−1.91(1.42)*

0.999

−1.01(0.53)

0.921

Class III

−1.22(1.24)*

0.982

−1.42(1.05)*

0.982

−0.58(0.81)*

0.513

4 Physical disability

Class I

−1.14(1.27)*

0.899

−0.66(0.36)*

0.612

−0.64(0.51)

0.586

Class II

−2.01(1.16)*

1.000

−0.35(0.46)

0.253

−0.50(0.42)

0.489

Class III

−1.93(1.73)*

0.995

−1.21(0.81)*

0.953

−0.64(0.31)*

0.552

5 Psychological disability

Class I

−2.43(1.51)*

1.000

−0.32(0.47)

0.265

−0.42(0.57)

Class II

0.34(1.29)

0.263

−1.88(1.63)*

1.000

−0.93(0.52)*

0.856

Class III

−1.36(1.01)*

0.965

−1.85(1.07)*

1.000

−0.86(0.48)*

0.812

6 Social disability

Class I

−0.07(0.47)

0.075

0.13(0.73)

0.129

−0.35(0.46)

0.298

Class II

−0.24(0.39)

0.152

0.11(0.64)

0.105

−0.22(0.67)

0.142

Class III

0.43(0.50)

0.332

−0.65(0.71)*

0.612

−0.14(0.58)

0.121

7 Handicap

Class I

0.15(0.22)

0.135

−0.21(0.69)

0.117

−0.23(0.38)

0.152

Class II

0.05(0.61)

0.075

0.09(0.62)

0.101

−0.21(0.44)

0.139

Class III

−0.07(0.38)

0.092

−0.05(0.46)

0.065

−0.04(0.39)

0.067