Immediate versus delayed implant placement after anterior single tooth extraction: the timing randomized controlled clinical trial
Abstract Aim To compare need for bone augmentation, surgical complications, periodontal, radiographic, aesthetic and patient reported outcomes in subjects receiving implant placement at the time of extraction (Immediate Implant) or 12 weeks thereafter. Methods Subjects requiring single tooth extraction in the anterior and premolar areas were recruited in seven private practices. Implant position and choice of platform were restoratively driven. Measurements were performed by calibrated and masked examiners. Results IMI was unfeasible in 7.5% of cases. One hundred and 24 subjects were randomized. One implant was lost in the IMI group. IMI required bone augmentation in 72% of cases compared with 43.9% for delayed ( p = 0.01), while wound failure occurred in 26.1% and 5.3% of cases, respectively ( p = 0.02). At 1 year, IMI had deeper probing depths (4.1 ± 1.2 mm versus 3.3 ± 1.1 mm, p p ‐trend p = 0.03). No differences in patient reported outcomes were observed. Conclusions Immediate implant placement should not be recommended when aesthetics are important, IMI should be limited to selected cases. Longer follow‐up is needed to assess differences in complication rates.
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