Table 1 Overview on the event rate (with lower and upper limits, z value), weight and significance (p values) for conventional approach and random effect : Membrane perforation rate in lateral maxillary sinus floor augmentation using conventional rotating instruments and piezoelectric device—a meta-analysis

author: Corinne Jordi, Khaled Mukaddam, Jrg Thomas Lambrecht, Sebastian Khl | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

Conventional	Event rate	Lower limit	Upper limit	z value	p value	Weight
Galindo-Moreno et al. 2007 [15]	0.005	0.000	0.076	− 3.726	0.000	0.445
Marchetti et al. 2007 [16]	0.010	0.001	0.143	− 3.218	0.001	0.443
Delibasi et al. 2013 [67]	0.043	0.006	0.252	− 3.023	0.003	0.753
van den Bergh et al. 1998 [5]	0.048	0.016	0.140	− 5.033	0.000	1.507
Krekmanov et al. 1995 [17]	0.071	0.030	0.160	− 5.527	0.000	1.870
Watzek et al. 1998 [18]	0.100	0.038	0.238	− 4.169	0.000	1.683
Zijderveld et al. 2008 [19]	0.102	0.059	0.171	− 7.153	0.000	2.394
Papa et al. 2005 [20]	0.105	0.054	0.197	− 5.726	0.000	2.162
Rickert et al. 2011 [73]	0.111	0.042	0.261	− 3.921	0.000	1.673
Rickert et al. 2013 [10]	0.111	0.042	0.261	− 3.921	0.000	1.673
Lindenmüller and Lambrecht 2006 [21]	0.112	0.063	0.191	− 6.462	0.000	2.343
Penarrocha-Diago et al. 2012 [22]	0.125	0.048	0.289	− 3.640	0.000	1.661
Kaptein et al. 1998 [23]	0.159	0.097	0.251	− 5.713	0.000	2.438
Cha et al. 2014 [24]	0.161	0.118	0.216	− 8.932	0.000	2.765
Tawil et al. 2001 [25]	0.167	0.071	0.343	− 3.285	0.001	1.791
Yilmaz et al. 2012 [26]	0.172	0.098	0.284	− 4.746	0.000	2.305
Cho et al. 2001 [27]	0.184	0.098	0.317	− 4.043	0.000	2.178
van den Bergh et al. 2000 [28]	0.200	0.093	0.379	− 3.037	0.002	1.894
Becker et al. 2008 [68]	0.204	0.154	0.265	− 7.779	0.000	2.791
Ewers et al. 2005 [29]	0.206	0.156	0.266	− 7.894	0.000	2.801
Aimetti et al. 2001 [30]	0.214	0.100	0.402	− 2.821	0.005	1.881
Hernández-Alfaro et al. 2008 [69]	0.219	0.184	0.259	− 11.435	0.000	2.934
Barone et al. 2008 [31]	0.231	0.076	0.522	− 1.829	0.067	1.346
Khoury et al. 1999 [3]	0.241	0.188	0.302	− 7.217	0.000	2.831
Barone et al. 2006 [32]	0.250	0.182	0.334	− 5.297	0.000	2.701
Raghoebar et al. 2001 [33]	0.258	0.200	0.327	− 6.230	0.000	2.805
Kim et al. 2011 [34]	0.259	0.129	0.453	− 2.391	0.017	1.948
Shlomi et al. 2004 [35]	0.274	0.184	0.387	− 3.714	0.000	2.533
Wannfors et al. 2000 [36]	0.275	0.159	0.432	− 2.738	0.006	2.228
Hallman et al. 2004 [37]	0.300	0.164	0.483	− 2.127	0.033	2.080
Bornstein et al. 2008 [38]	0.305	0.201	0.433	− 2.911	0.004	2.466
Ardekian et al. 2006 [39]	0.318	0.238	0.411	− 3.723	0.000	2.709
Kazancioglu et al. 2013 [40]	0.320	0.169	0.522	− 1.758	0.079	1.982
Raghoebar et al. 1999 [41]	0.321	0.249	0.403	− 4.129	0.000	2.775
Philippart et al. 2003 [42]	0.333	0.158	0.571	− 1.386	0.166	1.761
Scarano et al. 2015 [43]	0.333	0.131	0.624	− 1.132	0.258	1.455
Oh et al. 2011 [44]	0.343	0.276	0.416	− 4.085	0.000	2.830
Raghoebar et al. 1997 [45]	0.346	0.250	0.455	− 2.731	0.006	2.623
Jensen et al. 1994 [46]	0.352	0.274	0.438	− 3.307	0.001	2.764
Froum et al. 2013 [47]	0.375	0.240	0.532	− 1.564	0.118	2.320
Stricker et al. 2003 [48]	0.379	0.271	0.501	− 1.950	0.051	2.560
Levin et al. 2004 [49]	0.468	0.362	0.578	− 0.562	0.574	2.648
Schwartz-Arad et al. 2004 [4]	0.469	0.364	0.578	− 0.555	0.579	2.657
Papa et al. 2009 [50]	0.511	0.371	0.649	0.146	0.884	2.437
Kasabah et al. 2003 [6]	0.562	0.480	0.640	1.486	0.137	2.812
Krennmair et al. 2007 [51]	0.575	0.420	0.717	0.945	0.345	2.343
Random	0.240	0.205	0.278	− 11.262	0.000

Table 1 Overview on the event rate (with lower and upper limits, z value), weight and significance (p values) for conventional approach and random effect

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