t-test, Mann-Whitney U test EC and IC of marginal bone loss by characteristics of patients
| Variable | Subjects (N) | External MBL | Internal MBL | T value |
P-value | |
|---|---|---|---|---|---|---|
| Mean ± SD (mm) | Mean ± SD (mm) | |||||
| Gender | Male | 38 (55.9%) | -0.447 ± 0.552 | -0.689 ± 0.544 | 1.476 | 0.147 |
| Female | 30 (44.1%) | 0.013 ± 1.200 | -0.590 ± 0.686 | 1.567 | 0.125 | |
| Age | < 20 | 0 (0%) | - | - | - | - |
| 20 - 39 | 3 (4.4%) | -0.356 | 0.048 ± 0.257 | 0 |
0.667 | |
| 40 - 59 | 25 (36.8%) | -0.212 ± 0.939 | -0.757 ± 0.661 | 97 |
0.142 | |
| 60 - 79 | 36 (52.9%) | -0.446 ± 1.015 | -0.742 ± 0.596 | 2.37 | 0.222 | |
| 80 - 100 | 4 (5.9%) | -0.960 ± 0.300 | -0.587 ± 0.578 | 1 |
0.667 | |
| Site | Maxillary posteriors | 48 (55.2%) | -0.644 ± 0.717 | -0.833 ± 0.600 | 0.899 | 0.374 |
| Mandibular posteriors | 39 (44.8%) | 0.164 ± 1.009 | -0.183 ± 0.460 | 0.94 | 0.353 | |
| Periodontitis Status | Healthy | 2 (2.3%) | -0.465 ± 0.271 | - | - | - |
| Slight | 10 (11.5%) | -0.1197 ± 0.719 | -0.470 ± 1.005 | 0.504 | 0.628 | |
| Moderate | 41 (47.1%) | -0.718 ± 1.095 | -0.919 ± 0.774 | 2.662 | 0.111 | |
| Severe | 34 (39.1%) | -0.257 ± 0.968 | -0.359 ± 0.272 | 106 |
0.647 | |
| Diabetes | Diabetes patient | 16 (18.4%) | -0.598 ± 0.694 | -0.518 ± 0.707 | 28 |
0.758 |
| Diabetes non-patient | 64 (81.6%) | -0.131 ± 1.002 | -0.792 ± 0.762 | 2.799 | 0.007 | |
| GBR | GBR operate | 38 (43.7%) | -0.396 ± 1.094 | -0.845 ± 0.864 | 1.311 | 0.198 |
| GBR non-operate | 49 (56.3%) | -0.65 ± 0.859 | -0.627 ± 0.639 | 2.317 | 0.025 | |
*: results by Mann-Whitney U test.
MBL, marginal bone loss; SD, standard deviation; GBR, guided bone regeneration.
