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Table 4 Explantations of implants per membrane type up to 20 years after implant insertion

From: Retrospective analysis of 10,000 implants from insertion up to 20 years—analysis of implantations using augmentative procedures

Membrane type Implants
(n)
Min/max observation time (years) Lost implants % (n) Absolute survival rate % p value
No membrane 6439 0.0/20.2 4.77 (307) 95.23  
Geistlich Bio-Gide 2743 0.0/16.2 3.76 (103) 96.24 0.4462
Geistlich Bio-Gide combined with other membranes 279 0.0/10.2 3.23 (9) 96.77 0.7809
Gore-Tex 230 0.4/18.5 5.65 (13) 94.35 0.1671
Vicryl 224 0.0/18.4 6.70 (15) 93.3 0.6808
Tefgen 81 0.2/16 2.47 (2) 97.53 0.1638
BioVin M 65 0/1.9 1.54 (1) 98.46 0.7816
Tutodent 49 0.1/5.9 8.16 (4) 91.84 0.0555
Resodont 21 0.1/3.6 14.29 (3) 85.71 0.0021
Kollagen Vlies 10 0.1/9.7 30.0 (3) 70 0.0006
Ossix 8 8.0/8.9 0.00 (0) 100 0.4781
Osseoguard 4 2.3/3.2 0.00 (0) 100 0.7061
Curasan InionGTR 3 1.0/1.0 0.00 (0) 100 0.7694
Epigide 2 4.9/4.9 0.00 (0) 100 0.7680
Total 10158 0.0/20.2 4.53 (460) 95.47  
  1. Metric parameters were calculated using descriptive statistics. P values for pairwise comparison vs. no membrane were calculated in accordance to Kaplan and Meier using log-rank test