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Table 3 Detailed patient-related complication rates of the study groups

From: Evaluation of the surgical and prosthetic success of All-on-4 restorations: a retrospective cohort study of provisional vs. definitive immediate restorations

  Total Study group Sign.
Group 1 (PR) Group 2 (DR) p-value
Total complications
Patient level n (%) 27 of 126 (21.4) 6 of 34 (17.6) 21 of 92 (22.8) χ2 = 0.395, p = 0.529
Restoration level n (%) 27 of 136 (19.9) 6 of 42 (14.3) 21 of 94 (22.3) χ2 = 1.184, p = 0.277
Implant level n (%) 33 of 544 (6.1) 8 of 168 (4.7) 25 of 376 (6.6) χ2 = 0.726, p = 0.394
Biological complications
Patient level n (%) 17 of 126 (13.5) 2 of 34 (5.9) 15 of 92 (16.3) χ2 = 2.310, p = 0.129
Restoration level n (%) 17 of 136 (12.5) 2 of 42 (4.8) 15 of 94 (16.0) χ2 = 3.327, p = 0.068
Implant level n (%) 19 of 544 (3.5) 2 of 168 (1.2) 17 of 376 (4.5) χ2 = 3.822, p = 0.051
Technical complications
Patient level n (%) 11 of 126 (8.7) 4 of 34 (11.8) 7 of 92 (7.6) χ2 = 0.538, p = 0.463
Restoration level n (%) 11 of 136 (8.1) 4 of 42 (9.5) 7 of 94 (7.4) χ2 = 0.168, p = 0.681
Implant level n (%) 14 of 544 (2.6) 6 of 168 (3.6) 8 of 376 (2.1) χ2 = 0.965, p = 0.326
Non-severe complications
Patient level n (%) 20 of 126 (15.9) 5 of 34 (14.7) 15 of 92 (16.3) χ2 = 0.048, p = 0.827
Restoration level n (%) 20 of 136 (14.7) 5 of 42 (11.9) 15 of 94 (16.0) χ2 = 0.380, p = 0.538
Implant level n (%) 23 of 544 (4.2) 7 of 168 (4.2) 16 of 376 (4.2) χ2 = 0.002, p = 0.962
Severe complications
Patient level n (%) 8 of 126 (6.3) 1 of 34 (2.9) 7 of 92 (7.6) χ2 = 0.910, p = 0.340
Restoration level n (%) 8 of 136 (5.9) 1 of 42 (2.4) 7 of 94 (7.4) χ2 = 1.346, p = 0.246
Implant level n (%) 10 of 544 (1.8) 1 of 168 (0.6) 9 of 376 (2.4) χ2 = 2.081, p = 0.149
  1. PR provisional restoration, DR definite restoration, *p-values indicate a statistically significant difference with p < 0.05