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Progress in Orthodontics

Table 1 Mean and standard deviation (SD) for age at T0, treatment time, number of absences, number of orthodontic appliance breakages, PAR at T0 and T1, % PAR corrected in groups with loss and without loss

From: The impact of the loss of first permanent molars on the duration of treatment in patients treated with orthodontic space closure and without skeletal anchorage

Group

(n)

Age (± SD)

Treatment time

Absences (f)

Debonding

PAR

T0

PAR

T1

% PAR

Loss (n = 19)

34.9 (± 13.0)

44.7 (± 17.3)

4.42 (± 3.49)

3.79 (± 3.65)

21.9 (± 5.94)

5.63 (± 2.63)

73.5 (± 11.9)

Without Loss (n = 24)

23.8 (± 13.1)

22.5 (± 7.95)

2.25 (± 2.44)

2.25 (± 2.91)

14.8 (± 7.38)

3.92 (± 3.12)

70.4 (± 24.2)

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