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Table 2 Statistical comparison for the incidence of infection between grafting materials

From: Management of acute maxillary sinusitis after sinus bone grafting procedures with simultaneous dental implants placement – a retrospective study

Grafting material 1

Incidence of infection for grafting material 1 n/N (%)

Grafting material 2

Incidence of infection for grafting material 2 n/N (%)

p value

Z-score

Xenograft

3/95 (3.2)

Allograft

0/24 (0)

0.189

0.8818

Xenograft

3/95 (3.2)

Xenograft and Allograft mix

1/27 (3.7)

0.444

−0.1405

Xenograft

3/95 (3.2)

Alloplast

1/3 (33.3)

0.005

−2.6007

Xenograft

3/95 (3.2)

Xenograft and Alloplast mix

0/2 (0)

0.397

0.2553

Allograft

0/24 (0)

Xenograft and Allograft mix

1/27 (3.7)

0.171

−0.9522

Allograft

0/24 (0)

Alloplast

1/3 (33.3)

0.002

−2.8823

Allograft

0/24 (0)

Xenograft and Alloplast mix

0/2 (0)

N/A

N/A

Xenograft and Allograft mix

1/27 (3.7)

Alloplast

1/3 (33.3)

0.026

−1.9518

Xenograft and Allograft mix

1/27 (3.7)

Xenograft and Alloplast mix

0/2 (0)

0.389

0.277

Alloplast

1/3 (33.3)

Xenograft and Alloplast mix

0/2 (0)

0.181

0.9129

  1. N/A – not applicable