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Table 3 Articles excluded and reasons for exclusion

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

Reason for exclusion Investigations
Study design (case series or case report) Kim et al. (2017), Hatano et al. (2007)
Different grafting technique (lateral sinus lift or transalveolar technique) Jensen et al. (1994), Winter et al. (2002), Toffler et al. (2004), Chappuis et al. (2009), Soltan et al. (2011), Xiao et al. (2011), Cricchio et al. (2011), Scala et al. (2012), Bruschi et al. (2013), Kadkhodazadeh et al. (2013), Pjetursson et al. (2014), Monje et al. (2016), Falah et al. (2016), Markovic et al. (2017)
Type of implant (Zygoma implant) Pjetursson et al. (2004)