Clinical outcomes of magnesium-incorporated oxidised implants: a randomised double-blind clinical trial.

Abstract

OBJECTIVES: This study evaluated implant stability and clinical outcomes obtained

with magnesium-incorporated oxidised implants (Mg titanate) and compared them to

those blasted magnesium-incorporated oxidised implants (blasted Mg titanate).

PATIENTS AND METHODS: Mg titanate was manufactured using the microarc oxidation

(MAO) process. To obtain blasted Mg titanate, the MAO process was performed after

blasting with TiO(2) particles. The 15-month, randomised, double -blind clinical

trial was conducted on 54 implants in 40 patients (Mg titanate, 27 implants in 18

subjects; blasted Mg titanate, 27 implants in 22 subjects), in whom 4.0 mm x 10

mm implants were placed to restore the unilateral loss of one or two molars in

the mandible. The final prosthesis was attached 3 months postoperatively. Implant

stability was measured by the implant stability quotient (ISQ) and periotest

value (PTV) at the time of implant insertion, and 2, 3, and 15 months

postoperatively. Marginal bone loss was evaluated at 2, 6, and 15 months

postoperatively. Soft tissue analysis was performed at 15 months postoperatively.

RESULTS: Both implant systems showed high stability at all time points (>71).

Mean marginal bone loss was 0.71 +/- 0.65 mm and 0.75 +/- 0.73 after 15 months in

Mg titanate and blasted Mg titanate, respectively. There were no significant

differences between the two implant surfaces with respect to ISQ(P = 0.988),

PTV(P = 0.935), and marginal bone loss(P = 0.807) after 15 months. CONCLUSION:

The success rate after 1 year of follow-up was 100% for both

magnesium-incorporated oxidised implants. There were no significant differences

in the clinical outcomes between the two surfaces at 15 months follow-up.