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Table 4 Biological and mechanical complications

From: Single-crown restorations supported by short implants (6 mm) compared with standard-length implants (13 mm) in conjunction with maxillary sinus floor augmentation: a randomized, controlled clinical trial

  Patients, Short implant, n Standard length implant and maxillary sinus floor augmentation, n p* value
Biological complications 11 0 11 0.00
 Intraoperative bleeding 1 0 1 0.46
 Perforation of the Schneiderian membrane 3 0 3 0.09
 Pain and swelling 4 0 4 0.04
 Extensive cicatricial soft tissue 1 0 1 0.46
 Infection 1 0 1 0.46
 Permanent neurosensory disturbance 1 0 1 0.46
Mechanical complications 8 2 6 0.13
 Abutment screw loosening 4 1 3 0.34
 Loss of abutment 1 0 1 0.49
 Loosening of suprastructure 1 0 1 0.49
 Chipping of ceramics 2 1 1 1.00
  1. *Fischer’s exact test