Randomized controlled multicenter study comparing short dental implants (6 mm) versus longer dental implants (11-15 mm) in combination with sinus floor elevation procedures. Part 2: clinical and radiographic outcomes at 1 year of loading

Aim To compare, clinically and radiographically, short dental implants (6 mm) to long implants (11–15 mm) placed with sinus grafting. Methods Participants with 5–7 mm of bone height in the posterior maxilla were randomly allocated to receive short implants (GS) or long implants with sinus grafting (GG). Implants were loaded with single crowns 6 months after placement (PR). Patients were re‐evaluated 12 months after loading (FU‐1). Outcome variables included: Implant survival rate (CSR), marginal bone level alteration (MBL), periodontal probing depth (PPD), bleeding on probing (BoP), plaque control record (PCR) and crown‐to‐implant ratios (C/I). Statistical analysis was performed using parametric tests. Results In 97 subjects, 132 implants were re‐evaluated at FU‐1. The CSR was 100%. The MBL from implant placement (IP) to (PR) was −0.22 ± 0.4 mm for GG and −0.3 ± 0.45 mm for GS (p