Immediate versus early loading protocols of titanium-zirconium narrow-diameter implants for mandibular overdentures in edentulous patients: One-year results from a randomized controlled trial.

Author(s) Reis, R.; Nicolau, P.; Calha, N.; Messias, A.; Guerra, F.
Journal Clin Oral Implants Res
Date Published 2019 Jul 06
Abstract

OBJECTIVES: The purpose of this randomized clinical trial was to compare immediate and early loading protocols for mandibular overdentures with two-splinted narrow-diameter implants in thin, non-augmented residual ridge situations.

MATERIAL AND METHODS: Each edentulous patient received two implants in the interforaminal region. If primary stability after implant placement was achieved, patients were randomized either to the immediate (48 h post-surgery) or the early (2 weeks after surgery) loading group. In prosthetic rehabilitation, a bar prosthetic system with a titanium bar was used. Implant survival, success rates and radiographic changes at the crestal bone level were evaluated after one year, and patient satisfaction was recorded at 1 month and 6 months post-surgery.

RESULTS: Twenty-four patients with a mean age of 67±9 years were included. One patient passed away after 11 months due to treatment-independent reasons. In the 24 implants of the immediate loading group, the mean bone level change from surgery/loading to the first-year evaluation was 0.32±0.80 mm (p=0.066). Regarding the early group (22 implants), the mean bone level change from loading to 1 year was 0.34±0.69 mm (p=0.048). After 1 year, no differences could be detected between groups (p=0.91) with a mean difference of 0.02 mm (95% CI: [-0.42, 0.47]). The mean implant survival and success rates were 100% for both groups. Patient satisfaction was high; however, at 6 months, there was a difference between groups regarding the ability to chew.

CONCLUSIONS: Both loading protocols for mandibular overdentures supported by two splinted narrow-diameter implants were successful at the one-year follow-up. This article is protected by copyright. All rights reserved.

DOI 10.1111/clr.13502
ISSN 1600-0501
Citation Reis R, Nicolau P, Calha N, Messias A, Guerra F. Immediate versus early loading protocols of titanium-zirconium narrow-diameter implants for mandibular overdentures in edentulous patients: One-year results from a randomized controlled trial. Clin Oral Implants Res. 2019.