A 5-year prospective clinical study of submerged and nonsubmerged Paragon system implants in the edentulous mandible

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A 5-year prospective clinical study of submerged and nonsubmerged Paragon system implants in the edentulous mandible

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Publication Article, peer reviewed scientific
Title A 5-year prospective clinical study of submerged and nonsubmerged Paragon system implants in the edentulous mandible
Author(s) Eliasson, Alf ; Narby, Birger ; Ekstrand, Karl-Erik ; Hirsch, Jan ; Johansson, Anders ; Wennerberg, Ann
Date 2010
English abstract
PURPOSE: The aim of this investigation was to evaluate the clinical outcome of two different surgical protocols in the edentulous mandible: submerged and nonsubmerged. Further, the Paragon dental implant with a titanium plasma-sprayed surface was evaluated. MATERIALS AND METHODS: Twenty-nine consecutively treated patients with 168 implants supporting fixed prostheses were included. All but 3 patients were provided 6 implants, placed via nonsubmerged healing on one side and submerged healing on the other. Data were collected from patient records and radiographs. Twenty-four patients participated in the 5-year clinical follow-up examination. RESULTS: After 5 years, all patients still had their mandibular fixed prostheses in function. Cumulative survival rates were 100% for prostheses and 99.4% for implants. However, 3 implants fractured in 1 patient. One submerged implant was lost before loading but no further implants were lost during follow-up. The radiographic bone loss was small for all implants with a mean of 0.14 mm (standard deviation [SD]: 0.37) at 1 year and 0.42 mm (SD: 0.48) at 5 years for nonsubmerged implants and 0.17 mm (SD: 0.32) at 1 year and 0.51 mm (SD: 0.33) at 5 years for submerged implants. Nineteen implants (including the 3 that fractured) presented annual bone loss exceeding 0.2 mm after the first year, yielding a cumulative success rate of 86.2% after 5 years. CONCLUSION: Single-stage surgery was shown to have the same predictability as two-stage surgery in the anterior edentulous mandible. Paragon implants with a titanium plasma-sprayed surface showed a fracture rate of 2.2% and a success rate of 86.2% after 5 years.
Host/Issue International Journal of Prosthodontics;3
Volume 23
ISSN 0893-2174
Pages 231-238
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY::Oral prosthetics
Handle http://hdl.handle.net/2043/11230 (link to this page)

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