Table 1.
Prevalence of different gingival recession cut-off values for mid-buccal sites
| n | GR ≥ 1 mm (%) | SE | GR ≥ 3 mm (%) | SE | GR ≥ 5 mm (%) | SE | GR ≥ 7 mm (%) | SE | Generalized GR ≥ 1 mm (%) | SE | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | 736 | 57.20 | 1.82 | 42.12 | 1.82 | 8.83 | 1.05 | 1.77 | 0.49 | 33.56 | 1.74 |
| Age groups (years) | |||||||||||
| 20–39 | 196 | 34.18 | 3.39 | 19.39 | 2.82 | 3.06 | 1.23 | 1.53 | 0.88 | 12.76 | 2.38 |
| 40–59 | 349 | 61.32 | 2.61 | 46.99 | 2.67 | 9.17 | 1.54 | 1.43 | 0.64 | 38.11 | 2.60 |
| 60–75 | 191 | 73.30 | 3.20 | 56.54 | 3.59 | 14.14 | 2.52 | 2.62 | 1.16 | 46.60 | 3.61 |
| Gender | |||||||||||
| Male | 305 | 62.30 | 2.78 | 48.20 | 2.86 | 12.46 | 1.89 | 3.61 | 1.07 | 41.31 | 2.82 |
| Female | 431 | 53.60 | 2.40 | 37.82 | 2.34 | 6.26 | 1.17 | 0.46 | 0.33 | 28.07 | 2.16 |
| Education level | |||||||||||
| Low | 305 | 61.64 | 2.78 | 49.18 | 2.86 | 14.43 | 2.01 | 2.30 | 0.86 | 38.69 | 2.79 |
| Middle | 284 | 55.99 | 2.95 | 38.38 | 2.89 | 5.99 | 1.41 | 2.11 | 0.85 | 30.99 | 2.74 |
| High | 147 | 50.34 | 4.12 | 34.69 | 3.93 | 2.72 | 1.34 | 0.00 | 0.00 | 27.89 | 3.70 |
| Smoking status | |||||||||||
| Non-smoker | 488 | 56.97 | 2.24 | 42.42 | 2.24 | 8.20 | 1.24 | 0.82 | 0.41 | 32.99 | 2.13 |
| Light smoker | 116 | 53.45 | 4.63 | 33.62 | 4.39 | 4.31 | 1.89 | 0.86 | 0.86 | 27.59 | 4.15 |
| Heavy smoker | 132 | 61.36 | 4.24 | 48.48 | 4.35 | 15.15 | 3.12 | 6.06 | 2.08 | 40.91 | 4.28 |
| Periodontal status | |||||||||||
| No/mild periodontitis | 168 | 28.57 | 3.49 | 14.29 | 2.70 | 0.60 | 0.59 | 0.00 | 0.00 | 10.12 | 2.33 |
| Moderate periodontitis | 289 | 54.33 | 2.93 | 34.26 | 2.79 | 3.81 | 1.13 | 0.35 | 0.35 | 25.61 | 2.57 |
| Severe periodontitis | 279 | 77.42 | 2.50 | 67.03 | 2.81 | 19.00 | 2.35 | 4.30 | 1.21 | 55.91 | 2.97 |
| FMPS (%) | |||||||||||
| < 30 | 122 | 47.54 | 4.52 | 25.41 | 3.94 | 4.10 | 1.79 | 0.82 | 0.82 | 22.13 | 3.76 |
| 30–60 | 277 | 58.58 | 2.96 | 41.16 | 2.96 | 5.42 | 1.36 | 0.36 | 0.36 | 32.49 | 2.81 |
| > 60 | 337 | 59.64 | 2.67 | 48.96 | 2.72 | 13.35 | 1.85 | 3.26 | 0.97 | 38.58 | 2.65 |
| FMBS (%) | |||||||||||
| < 10 | 70 | 54.29 | 5.95 | 32.86 | 5.61 | 4.29 | 2.42 | 1.43 | 1.42 | 30.00 | 5.48 |
| 10–30 | 215 | 54.88 | 3.39 | 37.21 | 3.30 | 6.05 | 1.63 | 0.93 | 0.65 | 31.16 | 3.16 |
| > 30 | 451 | 58.76 | 2.32 | 45.90 | 3.35 | 10.86 | 1.47 | 2.22 | 0.69 | 35.25 | 2.25 |
| Toothbrushing frequency | |||||||||||
| Once/day | 107 | 56.07 | 4.80 | 47.66 | 4.83 | 11.21 | 3.05 | 0.93 | 0.92 | 36.45 | 4.65 |
| Twice/day | 315 | 57.14 | 2.79 | 40.00 | 2.76 | 7.94 | 1.52 | 2.54 | 0.89 | 30.79 | 2.60 |
| At least 3 times/day | 314 | 57.64 | 2.79 | 42.36 | 2.79 | 8.92 | 1.61 | 1.27 | 0.63 | 35.35 | 2.70 |
| Scaling frequency | |||||||||||
| ≤ 12 months | 325 | 61.23 | 2.70 | 45.54 | 2.76 | 7.08 | 1.42 | 1.23 | 0.61 | 36.92 | 2.68 |
| > 12 months | 411 | 54.01 | 2.46 | 39.42 | 2.41 | 10.22 | 1.49 | 2.19 | 0.72 | 30.90 | 2.28 |
GR, gingival recession; SE, standard error