Is It Possible to Achieve Favorable Accelerated Dental Changes with No Periodontal Complications When Retracting Upper Anterior Teeth Assisted by Flapless Corticotomy Compared to Traditional Corticotomy? A Two-Arm Randomized Controlled Trial
Table 2
Descriptive statistics of the en-masse retraction rate (mm/month) as well as the values of significance tests.
Time
FCG
TCG
FCG vs TCG mean difference (95% CI)
value†
n
Mean
SD
n
Mean
SD
Upper central incisors retraction rate
T0-T1
18
1.60
0.14
18
1.82
0.18
−0.23 (−0.33, −0.12)
<0.001
T1-T2
18
1.42
0.10
18
1.66
0.15
−0.24 (−0.33, −0.16)
<0.001
T2-T3
18
1.22
0.10
18
1.39
0.18
−0.17 (−0.27, −0.07)
0.001
T3-T4
15
1.08
0.08
15
1.14
0.18
−0.06 (−0.16, 0.04)
0.244
T4-T5
9
0.98
0.12
6
0.89
0.11
0.09 (−0.04, 0.22)
0.148
T0-TF
18
6.18
0.25
18
6.84
0.31
−0.65 (−0.84, −0.46)
<0.001
Upper canine retraction rate
T0-T1
18
1.57
0.19
18
1.80
0.18
−0.23 (−0.35, −0.10)
<0.001
T1-T2
18
1.41
0.10
18
1.63
0.15
−0.22 (−0.31, −0.14)
<0.001
T2-T3
18
1.21
0.10
18
1.38
0.18
−0.17 (−0.27, −0.08)
0.001
T3-T4
15
1.07
0.09
15
1.09
0.22
−0.02 (−0.15, 0.11)
0.742
T4-T5
9
0.98
0.12
6
0.86
0.14
0.11 (−0.03, 0.26)
0.115
T0-TF
18
6.09
0.37
18
6.65
0.40
−0.55 (−0.82, −0.29)
<0.001
†Two-sample t-test. Employing Bonferroni’s correction for multiplicity, statistical significance was set at (alfa: 0.05/6 = 0.008); FCG: flapless corticotomy group; TCG: traditional corticotomy group; SD: standard deviation; CI: confidence interval; the TCG values were subtracted from the FCG values.
