Graftless Sinus Floor Elevation Using the Lateral or Transcrestal Approach. A Randomized Clinical Trial With One Year Follow-Up
Abstract
INTRODUCTION
This randomized clinical trial aimed to evaluate implant stability following graftless lateral window and crestal implant approaches for maxillary sinus floor elevation (MSFE) 1 year after implant placement.
METHODS
Twenty-six single missing posterior maxillary teeth indicated for delayed implant placement, with a residual ridge height of 4-6 mm, were randomly assigned to perform either graftless lateral window (control) or crestal implant (test) approaches for MSFE. Implant stability was assessed using resonance frequency analysis; intra-sinus vertical bone gain and marginal bone loss were measured via CBCT 1 year after implant placement. Clinical parameters and patient-reported outcomes were also measured.
RESULTS
The reported implant stability quotient (ISQ) values were not significantly different between the lateral window and the crestal implant approaches (80.92 ± 4.57 and 80.19 ± 7.28, respectively) 12 months after implant placement. However, the lateral window approach revealed a significant increase (p < 0.001) in the mean ± SD intra-sinus vertical bone gain at 6 and 12 months (3.64 ± 0.84 mm and 3.82 ± 0.84 mm, respectively) compared to the crestal implant approach (1.66 ± 1.27 mm and 2.42 ± 1.39 mm, respectively). However, no intergroup significant difference was noticed concerning average marginal bone loss (p = 0.31) after 12 months. Postoperative complications and patient discomfort were more evident in the lateral window approach group.
CONCLUSION…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design.
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