Self-Ligating Brackets and Their Impact on Oral Health-Related Quality of Life in Chinese Adolescence Patients: A Longitudinal Prospective Study

Table 2

Means (and standard deviations) of functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, social disability, and any handicaps in the two types of orthodontic appliances from to .

Appliance	Time	Functional limitation	Physical pain	Psychological discomfort	Physical disability	Psychological disability	Social disability	Handicaps	Total scores
Self-ligating bracket		4.52 (1.89)	5.36 (1.65)	3.12 (1.12)	4.49 (1.64)	5.54 (1.50)	4.03 (1.20)	1.52 (0.86)	26.32 (2.35)
Conventional bracket		4.75 (1.99)	5.86 (1.81)	3.25 (1.09)	4.79 (1.72)	5.72 (1.44)	4.12 (1.10)	1.66 (0.81)	27.40 (2.15)
Self-ligating bracket		4.12 (1.78)	4.12 (1.85)	4.09 (1.42)	4.12 (1.73)	4.68 (1.36)	3.56 (0.98)	1.18 (0.89)	24.12 (2.16)
Conventional bracket		4.30 (1.56)	4.30 (1.89)	4.32 (1.23)	4.56 (1.64)	5.09 (1.42)	3.86 (0.88)	1.34 (0.85)	25.46 (2.14)
Self-ligating bracket		2.89 (1.14)	2.64 (1.34)	1.29 (0.92)	1.89 (0.82)	1.04 (0.98)	1.14 (0.78)	0.52 (0.75)	11.47 (2.03)
Conventional bracket		3.02 (1.23)	3.02 (1.46)	1.56 (0.85)	2.15 (0.75)	1.36 (0.86)	1.46 (0.69)	0.61 (0.72)	12.76 (2.31)
Self-ligating bracket		1.89 (0.76)	1.79 (0.97)	0.66 (0.70)	1.24 (0.42)	0.32 (0.29)	0.32 (0.45)	0.35 (0.16)	7.12 (1.89)
Conventional bracket		2.10 (0.88)	2.21 (1.02)	0.87 (0.69)	1.42 (0.35)	0.62 (0.38)	0.52 (0.52)	0.40 (0.22)	8.23 (1.74)
Self-ligating bracket		1.56 (0.70)	1.56 (0.71)	0.56 (0.18)	0.18 (0.14)	0.18 (0.13)	0.15 (0.21)	0.10 (0.19)	3.85 (0.59)
Conventional bracket		1.88 (0.68)	1.89 (0.98)	0.60 (0.21)	0.40 (0.11)	0.21 (0.12)	0.19 (0.11)	0.20 (0.13)	4.25 (0.49)