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 TiO2 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 4.0mmx10mm implants were placed to restore the unilateral loss of one or two molars in the mandible. The final prosthesis was attached 3months 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 15months postoperatively. Marginal bone loss was evaluated at 2, 6, and 15months postoperatively. Soft tissue analysis was performed at 15months postoperatively. Results Both implant systems showed high stability at all time points (>71). Mean marginal bone loss was 0.71 +/- 0.65mm and 0.75 +/- 0.73 after 15months 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 15months. Conclusion The success rate after 1year 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 15months follow-up.