Interventions for replacing missing teeth: 1- versus 2-stage implant placement

1- or 2-stage implant placement might possibly have similar outcomes, although the evidence is insufficient. In patients with no teeth there may be less implant failures with the 2-stage approach compared to the 1-stage implant placement.

A Cochrane review included 5 studies with a total of 239 subjects comparing 1-stage implant placement with 2-stage placement. On a patient, rather than per implant basis, the meta-analyses showed no statistically significant differences for prosthesis (RR 1.87, 95% CI 0.33 to 10.40; 3 studies, n=153) and implant failures (RR 1.39, 95% CI 0.59 to 3.27; 4 studies, n=210) at 6 to 12 months. However, trends suggested less implant failures with the 2-stage (submerged) approach especially in fully edentulous patients.

Comment: The quality of evidence is downgraded by study quality (inadequate or unclear allocation concealment and lack of blinding) and by imprecise results (wide confidence intervals).

Ədəbiyyat

1. Esposito M, Grusovin MG, Chew YS, Coulthard P, Worthington HV. Interventions for replacing missing teeth: 1- versus 2-stage implant placement. Cochrane Database Syst Rev 2009;(3):CD006698. .