Patients’ awareness regarding the quality of their oral hygiene: development and validation of a new measurement instrument

Table 3 Self-perceived oral cleanliness between group 1 (n = 9) and group 2 (n = 10)

Variable	Group 1	Group2	t (df)	Cohen’s d	95% CI for effect size
Variable	M ± SD	M ± SD	t (df)	Cohen’s d	Lower	Upper
SPOC_n	59.6 ± 32.3	83.0 ± 12.4	− 2.046 (10.111)	− 0.980	− 1.925	− 0.009
SPOC_d
Total	45.0 ± 32.3	79.7 ± 13.4	− 3.004 (10.451)	− 1.436	− 2.439	− 0.399
Outer surfaces	54.7 ± 38.6	84.0 ± 12.8	− 2.170 (9.591)	− 1.042	− 1.995	− 0.064
Inner surfaces	35.2 ± 33.7	75.5 ± 17.7	− 3.204 (11.801)	− 1.520	− 2.536	− 0.470
Maxilla	39.7 ± 33.9	80.3 ± 14.2	− 3.336 (10.477)	− 1.594	− 2.623	− 0.531
Mandible	50.2 ± 32.8	79.2 ± 13.5	− 2.467 (10.417)	− 1.179	− 2.147	− 0.182

Group 1: Tooth brushing terminated after 1 min. Group 2: Self terminated tooth brushing. SPOC: Self-perceived oral cleanliness. SPOC: Self-perceived oral cleanliness. SPOC_n: Naïve overall SPOC before being informed within the questionnaire about the standards of a dentist. SPOC_d: SPOC after being informed about the standards of a dentist. Total: SPOC_d: Mean of the SPOC_d-scores for all 12 areas of the dentition (sextants by inner vs. outer surfaces). Outer/inner: SPOC_d: Mean of the SPOC_d-scores for outer/inner surfaces. Maxilla/mandible: Mean of the SPOC_d-scores for the inner and outer surfaces of the maxilla/mandible

ISSN: 1472-6831