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Table 2 Characteristics of the included investigations

From: Influence of exposing dental implants into the sinus cavity on survival and complications rate: a systematic review

Author (year) Study design Follow-up (months) N of patients N of implants Smokers Length and diameter (mm) Implant system
 Shihab 2017 [33] Retrospective 60 35 70 NA 5–12 × 3.0–5.7 IDI FMD Nucleoss
 Ghanem 2014 [32] Retrospective 72 10 10 NA NA NA
 Nooh 2013 [31] Prospective 12 56 63 0 4 × 8 4.3 × 10 5 × 8 5 × 10 Nobel Biocare
 Kim 2013 [30] Retrospective 17.9 39 87 NA 8-9-10-11,5 × 4–5 NA
 Abi Najm 2013 [29] Retrospective 118 70 83 7 NA Strauman
 Tabrizi 2012 [28] Retrospective 12 13 18 NA NA Astra tech Zimmer DIO
 Jung 2007 [27] Retrospective 10 9 23 NA NA Astra tech Osstem implant
 Branemark 1984 [26] Retrospective 120 101 139 NA NA Branemark system
1–2 phase Graft material CBH (mm) Penetration (mm) Evaluation ncm Membrane perforation (%) Clinic complications (Pat level)
 2 No ≤ 4 > 4 rx(opg)-clinic > 30 100 2.1% epistaxis
 2 No NA ≤ 4 rx(opg-MSCT)-clinic NA 100 0%
 2 No 5–8 < 4 rx(opg)-clinic > 25 100 12.5% epistaxis 1.78% sinusitis
 2 No 4.2–9.3 1–5 rx (opg)-clinic 25 100 7.7% epistaxis
 1 No 5–8 < 4 rx (periapical-opg)-clinic NA 100 0%
 NA No NA < 4 rx (periapical-CT)-clinic NA NA 0%
 2 No NA > 4 rx(CT)-clinic.questionare NA NA 0%
 2 No NA NA rx-clinic NA NA NA
Rx complications Type of prosthesis Implant failure before loading Implant failure after loading Total implant failure Survival rate (%) Bone loss (mm)  
 0% NA 1 1 2 97% 0  
 0% 49 SC 0 0 0 100% NA  
 NA 49 Unilateral SC 7 Bilateral SC 1 0 1 98% NA  
 NA 31 SC 56 splinted for FA 0 0 0 100% + 0.05  
0% NA 0 0 0 100% NA  
 16% (patients) thickening membrane NA 0 0 0 100% 0  
 60% (implants) thickening membrane NA 0 0 0 100%% NA  
 NA NA NA NA 30% 70% NA  
  1. CHB crestal bone height, mm millimeters, SC single crown, FA full arch restoration, NA not available, rx radiography, opg orthopantomography, CT computerized tomography, MSCT multi-slice computerized tomography