Table 4.
Mean probing pocket depth on implant level at 6, 12, 24 and 36 months for each study group and the mean difference between respectively equicrestally versus subcrestally placed implants and implants with a moderately rough versus minimally rough neck; p < 0.05 indicates a statistically significant difference (paired t-test).
| Probing Pocket Depth | |||||||||
| Group 1: Equicrestal | Group 2: Subcrestal | Paired Difference | |||||||
| Mean (SD) | Min | Max | Mean (SD) | Min | Max | Mean dif | 95% CI | p | |
| 6 months | 1.88 (0.53) | 1.00 | 3.25 | 2.01 (0.66) | 1.00 | 3.75 | −0.135 | (−0.311,0.041) | 0.125 |
| 12 months | 1.70 (0.44) | 1.00 | 2.50 | 1.83 (0.53) | 1.00 | 2.75 | −0.130 | (−0.312,0.051) | 0.149 |
| 24 months | 2.30 (0.66) | 1.50 | 4.50 | 2.57 (0.84) | 1.25 | 4.50 | −0.261 | (−0.473,−0.048) | 0.018 |
| 36 months | 2.42 (0.69) | 1.00 | 4.00 | 2.59 (0.71) | 1.00 | 3.75 | −0.163 | (−0.0378,0.052) | 0.130 |
| Group 3: Moderately Rough Neck | Group 4: Minimally Rough Neck | Paired Difference | |||||||
| Mean (SD) | Min | Max | Mean (SD) | Min | Max | Mean dif | 95% CI | p | |
| 6 months | 2.93 (0.71) | 1.75 | 5.25 | 2.88 (0.65) | 1.75 | 4.75 | 0.050 | (−0.142,0.242) | 0.592 |
| 12 months | 2.65 (0.72) | 1.75 | 4.75 | 2.68 (0.68) | 1.75 | 4.50 | −0.033 | (−0.221,0.154) | 0.709 |
| 24 months | 2.48 (0.58) | 1.25 | 3.50 | 2.34 (0.60) | 1.00 | 3,25 | 0.143 | (−0.114,0.401) | 0.252 |
| 36 months | 2.10 (0.68) | 1.25 | 4.25 | 2.01 (0.58) | 1.00 | 3.00 | 0.088 | (−0.259,0.434) | 0.603 |