Page 127 - Peri-implant health: the effect of implant design and surgical procedure on bone and soft tissue stability

IMPROVEMENT OF QUALITY OF LIFE WITH IMPLANT-SUPPORTED MANDIBULAR OVERDENTURES AND THE EFFECT OF IMPLANT TYPE AND SURGICAL PROCEDURE ON BONE AND SOFT TISSUE STABILITY
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Table 2: Mean bone level for each study group and the bone level difference between respectively equicrestally versus subcrestally placed implants and implants with moderately rough versus minimally rough neck; p < 0.05 indicates a statistically significant difference (paired t-test)
Baseline 6 months 12 months 24 months 36 months
Mean (SD) 0.03 (0.09) 0.72 (0.74) 0.78 (0.81) 0.69 (0.70) 0.59 (0.59)
Median Min Max 0.00 0.00 0.40 0.59 0.00 2.45 0.54 0.00 2.92 0.51 0.00 2.61 0.44 0.00 2.25
Mean (SD) 0.00 (0.00) 0.04 (0.11) 0.03 (0.10) 0.04 (0.10) 0.04 (0.10)
Median Min Max 0.00 0.00 0.00 0.00 0.00 0.45 0.00 0.00 0.36 0.00 0.00 0.30 0.00 0.00 0.36
Mean dif 0.030 0.678 0.746 0.644 0.549
95% CI P (-0.009,0.070) 0.123
Baseline 6 months 12 months 24 months 36 months
Mean (SD) 0.01 (0.07) 0.33 (0.64) 0.34 (0.68) 0.36 (0.58) 0.51 (0.74)
Median Min Max 0.00 0.00 0.30 0.00 0.00 2.74 0.00 0.00 2.62 0.00 0.00 1.75 0.22 0.00 2.84
Mean (SD) 0.02 (0.05) 0.27 (0.38) 0.34 (0.53) 0.37 (0.49) 0.45 (0.58)
Median Min Max 0.00 0.00 0.22 0.18 0.00 1.60 0.00 0.00 1.61 0.23 0.00 1.60 0.26 0.00 1.95
Mean dif -0.002 0.064 0.009 -0.014 0.066
95% CI (-0.424,0.037) (-0.118,0.245) (-0.191,0.209) (-0.170,0.142) (-0.114,0.246)
P 0.9P2 0.474 0.926 0.853 0.453
Group 1: Equicrestal
Bone Level
Group 2: Subcrestal
Paired difference
Group 3: Moderately rough neck
Group 4: Minimally rough neck
Paired difference
(0.360,0.996) (0.397,1.096) (0.337,0.951) (0.297,0.802)
<0.001 <0.001 <0.001 <0.001