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European Journal of Oral Implantology

Editor in Chief: Dr. Marco Esposito

Official publication of the British Society of Oral Implantology (BSOI) and the Dutch Society of Oral Implantology (NVOI)

ISSN (print) 1756-2406 • ISSN (online) 1756-2414


Spring 2011
Volume 4 , Issue 1

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Clinical and radiological outcomes of 1- versus 2-stage implant placement: 1-year results of a randomised clinical trial

Tallarico, Marco / Vaccarella, Anna / Marzi, Gian Carlo

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Materials and methods: Forty-seven patients were randomly allocated to 1- or 2-stage treatment groups immediately after implant placement. Twenty-nine patients received 38 1-stage early loaded implants and 18 patients received 51 2-stage early loaded implants. Outcome measures were failures of implants and/or prosthesis, complications, pain score, amount of analgesic consumption and periimplant bone level changes at implant loading (12 weeks) and at the 1-year follow-up. Results: After 1 year, no dropout occurred. In the 1-stage group, 2 implants (1 patient) failed to osseointegrate and the implant-supported prosthesis could not be placed, versus none in the 2-stage group. Two complications were reported in the 1-stage group versus only one in the 2-stage group. Pain score measurements, analgesic consumption and peri-implant bone level did not show any significant difference between the two groups. All patients would undergo the same procedures again. Conclusions: The submerged technique is not a prerequisite for osseointegration, though 1-stage implant placement might be at a slightly higher risk for early failures.

Keywords: bone crest level, dental implants, early loading, one-stage placement, two-stage placement

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