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Table 1 Characteristicsand Factors (X) Category# Group 1 Surgeon no. 1 SICace# Group 2 Surgeon no. 2 SICace# Group 3 Surgeon no. 2 Osstem Number of patients 177 81 78 Number of implants 329 113 115k X1l Sex Male 103 36 33 Female 74 45 X2 Age (years) 1 9 3 0 18 15 12 3 1 4 0 65 24 16 4 1 5 0 70 25 27 5 1 6 0 86 35 32 6 1 7 0 50 13 23 7 1 8 0 1 5 8 1 1 0 0 0 Missing data 10 X3 Maxillary/mandible location Maxilla 112 40 55
Mandibular 217 73 60 X4 Immediate/delayed implantation Immediate 44 Delayed 226 69 90 X5 The need of bone graft Yes No 302 89 79 X6 Implant diameter (mm) 3.5 30 3.7 19 4 203 4.2 4.5 58 59 38 6 X7 Implant length (mm) 7.5 8.5 22 9.5 120 52 56 11.5 34 95 20 14.5 X8 I/II-stage healing pattern I-stage 105 II-stage 224 42 X9~ Insertion torque(Ncm) 1 0 2 0 17 2 1 3 0 99 26 118 14 7 2 missing data X10 Bone type 21 51 67 3 62 83 8 X11 T1-T2 time interval (months) 1.5 2.5 37 47 66 31 6 9 28
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