Table 3 Effect of Scale and Polish on Plaque and Calculus
From: Clinical outcomes of Single-Visit oral Prophylaxis: A practice-based randomised controlled trial
| Â | 6-month Group | 12-month Group | 24-month Group | Statistical Test |
|---|---|---|---|---|
Prevalence of plaque | ||||
Data available for both baseline and follow up (n = 307) | ||||
N (%) with any plaque at follow-up | 79 (73.8) | 76 (76.0) | 84 (84.0) | Χ2 test P = 0.183 |
Complete data analysis (N = 307) | ||||
Odds Ratio (from Logistic regression) (95% CI) for follow up adjusted for baseline plaque | 1.00 | 1.08 (0.57, 2.07) | 1.89 (0.93, 3.81) | Â |
Multiple imputation analysis* (N = 368) | ||||
Odds Ratio (from Logistic regression) (95% CI) for follow up adjusted for baseline plaque | 1.00 | 1.04 (0.54, 1.98) | 1.90 (0.93, 3.86) | Â |
Proportion of index teeth with plaque. Data available for both baseline and follow-up (N = 307) | ||||
Follow-up % of index teeth with plaque Mean (SD) | 39.4 (34.2) | 43.5 (34.7) | 43.7 (32.4) | ANOVA P = 0.587 |
Follow-up % of index teeth with plaque adjusted for baseline plaque | ANCOVA P = 0.597 | |||
Multiple imputation analysis* (N = 368) | ||||
Follow-up % of index teeth with plaque adjusted for baseline values (from linear regression) | P = 0.653 | |||
Prevalence of lingual calculus | ||||
Data available for both baseline and follow up (N = 305) | ||||
N (%) with any calculus at follow-up | 59 (55.7) | 54 (54.5) | 61 (61.0) | Χ2 test P = 0.615 |
Complete data analysis (N = 305) | ||||
Odds Ratio (from Logistic regression) (95% CI) for follow up adjusted for baseline calculus | 1.00 | 1.10 (0.60, 2.04) | 1.58 (0.85, 2.95) | Â |
Multiple imputation analysis* (N = 367) | ||||
Odds Ratio (from Logistic regression) (95% CI) for follow up adjusted for baseline calculus | 1.00 | 1.12 (0.60, 2.09) | 1.64 (0.86, 3.13) | Â |
Amount (mm) of lingual calculus | ||||
Data available for both baseline and follow up (N = 305) | ||||
Follow-up Calculus Mean (SD) | 0.71 (1.00) | 0.89 (0.99) | 0.95 (0.97) | ANOVA P = 0.022 Mean difference (95% CI) 6-24: -0.32 (-0.61, -0.02) 6-12: -0.26 (-0.55, 0.04) 24-12: 0.06 (-0.24, 0.36) |
Follow up Calculus adjusted for baseline calculus | ANCOVA P = 0.001 | |||
Multiple imputation analysis (N = 367) | ||||
Follow-up Calculus adjusted for Baseline values (from linear regression) | P < 0.001 | |||