CONTROL ID: 2608797
CONTACT: Par-Olov Ostman
Abstract Details

Initial Crestal Bone Remodeling of Immediately Loaded Co-Axis Implants: A Radiographic Controlled Clinical Trial

AUTHORS: Glibert, Maarten; De Bruyn, Hugo; Ostman, Par-Olov

The Co-Axis implant (Southern Implants, Irene, South Africa) has a 12-degree angle in the implant neck which has the advantage of avoiding the use of an angulated abutment in case of angulation problems.

The aim of this study is to compare initial crestal bone remodelling of immediately loaded Co-Axis implants with immediately loaded standard implants.

Material and Methods:
Criteria for immediate loading were an insertion torque of > 25 Ncm and an ISQ of minimum 55. Of the 44 initially selected patients, immediate loading was not possible in 13 patients which were therefor excluded from the study.

Sixteen Co-Axis Tri-Nex implants and 38 standard Tri-Nex implants (Southern Implants, Irene, South Africa) were placed and immediately loaded in 31 patients supporting single (22 implants), partial (22 implants) and full (10 implants) fixed dentures. Initial crestal bone remodelling served as the main variable and radiographic crestal bone levels were analysed and compared to baseline (implant placement)

A survival of 100% and an overall initial crestal bone remodelling of 0.31 mm (SD: 0.41; range: 0 – 1.64 mm) was recorded after a mean follow-up of 3.67 months (SD: 1.67; 2.10 – 6.67 months). There was no statistical significant difference in initial crestal bone remodelling between Co-Axis (0.24 mm; SD: 0.44; range: 0 – 1.22 mm) and standard implants (0.36 mm; SD: 0.41; range: 0 – 1.64 mm).

Comparable initial crestal bone remodelling was recorded around immediately loaded Co-Axis and standard implants indicating that the Co-Axis implant might be a viable treatment alternative if a deviant implant angulation is needed.

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