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Table 4 Postoperative ISQ value based on whether bone graft was accompanied, by graft material, whether sinus lift was accompanied, between approach techniques. T test & ANOVA were performed using Microsoft Excel 2010®

From: The factors that influence postoperative stability of the dental implants in posterior edentulous maxilla

   n ISQ
Whether bone graft performed (P = 0.42) With bone graft 354 79.08 ± 7.37
Without bone graft 125 79.68 ± 6.57
By graft material (P = 0.52) Autogenous 144 79.37 ± 7.19
Xenograft 177 78.73 ± 7.28
Mixture (autogenous + xenograft) 30 80.20 ± 8.51
Whether sinus lift performed (P = 0.14) With sinus lift 301 78.87 ± 7.55
Without sinus lift 174 79.84 ± 6.46
By approach technique of sinus lift (P = 0.16) Lateral approach 263 78.70 ± 7.86
Crestal approach 24 80.13 ± 4.26