Table 4 Subscales of OHRQoL in included studies. Because different questionnaires were used and several different options of subscales/dimensions exist, the available results are presented if available. Results are given as the mean value ± standard deviation or otherwise as percentage

Lopez-Pintor et al. 2017* [21]

4.20 ± 2.45

4.04 ± 2.13

3.98 ± 2.54

3.34 ± 2.05

3.26 ± 1.94

2.76 ± 1.68

2.80 ± 1.84

Lira E Silva et al. 2017 [28]

1.18 ± 1.07

1.73 ± 1.15

1.11 ± 1.18

1.51 ± 1.10

0.89 ± 1.15

0.23 ± 0.50

0.63 ± 0.81

Camacho-Alonso et al. 2018 [23]

1.86 ± 1.81

2.17 ± 2.31

2.08 ± 1.89

1.94 ± 2.14

0.88 ± 1.45

0.74 ± 1.35

0.68 ± 1.38

Oliveira et al. 2019 [27]

No/mild or moderate/severe periodontitis

0.29 ± 1.00/0.48 ± 1.00/0.72 ± 1.16

1.5 ± 2.09/1.54 ± 1.87/2.16 ± 2.44

1.21 ± 1.64/1.51 ± 2.10/2.04 ± 2.44

0.54 ± 1.25/0.56 ± 1.16/0.91 ± 1.78

0.63 ± 1.10/0.94 ± 1.51/1.35 ± 1.90

0.42 ± 0.97/0.55 ± 1.38/0.54 ± 1.32

0.17 ± 0.82/0.62 ± 1.52/0.78 ± 1.68

Behavioural impact

Rodakowska et al. 2018 [22]

45.8%

Schmalz et al. 2018 [24]

Behavioural impact

Rodakowska et al. 2018 [22]

30.6%