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International Journal of Oral Implantology
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Int J Oral Implantol 12 (2019), Nr. 3     23. Sep. 2019
Int J Oral Implantol 12 (2019), Nr. 3  (23.09.2019)

Seite 299-312, Sprache: Englisch


Lateral alveolar ridge augmentation with autogenous block grafts fixed at a distance vs resorbable poly-D-L-lactide foil fixed at a distance: 5-year results of a single-blind, randomised controlled trial
Korsch, Michael / Kasprzyk, Sebastian / Walther, Winfried / Bartols, Andreas
Purpose: To report the 5-year outcomes of autogenous bone block grafts fixed at a distance (BBG-D) versus a resorbable poly-D-L-lactide foil fixed at a distance (SonicWeld Rx shell technique [SWST]) randomised controlled trial, for lateral alveolar ridge augmentation.
Materials and methods: Thirty patients with a buccopalatal bone width of ≤ 3 mm were randomised into the following treatment groups: BBG-D and SWST. The implant survival, changes in bone morphology visualised in a cone beam computed tomography scan and periodontal parameters were assessed.
Results: Thirteen patients in the BBG-D group and seven in the SWST group could be included in the analysis. All implants that osseointegrated initially (BBG-D = 13 and SWST = 7) were functional at the 5-year re-evaluation. The buccopalatal bone width significantly (P < 0.001) decreased over time regardless of the study group. A bone loss of 0.00 mm was observed at the distal implant shoulder in the BBG-D group and 0.29 mm (SD 0.49 mm) in the SWST group (P = 0.04). The mean buccal bone loss was 2.56 mm (SD 3.65 mm) in the BBG-D group and 1.71 mm (SD 4.11 mm) in the SWST group (P = 0.64). The mean probing pocket depth was within sound limits in both groups without significant differences (P > 0.05). Bleeding on probing was low.
Conclusions: Within the limitations of this study, a similar implant survival rate was observed between the BBG-D and SWST techniques during the 5-year follow-up. The buccopalatal bone width decreased over time regardless of the augmentation method used.

Conflict of interest statement: The study was not funded. The authors declare no conflicts of interest.

Schlagwörter: bone graft, buccal bone, cone beam computed tomography (CBCT), dental implant, poly-D-L-lactide (PDLLA) foil
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