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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 32 (2017), Nr. 1     26. Jan. 2017
Int J Oral Maxillofac Implants 32 (2017), Nr. 1  (26.01.2017)

Seite 114-120, doi:10.11607/jomi.4203, PubMed:28095517, Sprache: Englisch


Radiographic Evaluation of Crestal Bone Level in Split-Crest and Immediate Implant Placement: Minimum 5-Year Follow-up
Bruschi, Giovanni B. / Capparé, Paolo / Bravi, Fabrizio / Grande, Nicola / Gherlone, Enrico / Gastaldi, Giorgio / Crespi, Roberto
Purpose: This study aimed to evaluate the radiographic bone level changes of implants positioned via the split-crest procedure both in the maxilla and mandible at a long-term follow-up.
Materials and Methods: Seventy-one patients were retrospectively enrolled in the study. The placement of 137 dental implants was performed in the edentulous premolar or molar region after a split-crest ridge expansion procedure. Implants followed a delayed loading protocol. Intraoral digital radiographs were performed at baseline, upon implant placement, at 70 days (following placement of the provisional prosthesis), and on a yearly basis during followup. Crestal bone levels were evaluated at the baseline, upon provisional prosthesis placement, at 12, 36, and 60 months, and at the long-term follow-up of healing from implant placement.
Results: The patients underwent a mean follow-up of 6.54 ± 1.32 years, from which the implant survival rate was reported at 98.54%. Within the first year from implant placement, a bone loss resulted at a mean value of -1.11 ± 0.44 mm. After almost 3 years from implant placement, a mean bone gain of +0.89 ± 0.39 mm was reported, which was statistically significant compared with 12-month values (P < .05). From this point, bone levels remained stable, reporting similar values over time, with no significant differences (P > .05).
Conclusion: A mean vertical bone gain of +0.89 ± 0.39 mm was observed after almost 36 months after implant positioning.

Schlagwörter: bone level, dental implant, split crest
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