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Mandibular Overdentures Supported by 6‐mm Dental Implants: A 1‐Year Prospective Cohort Study
Author(s) -
Guljé Felix,
Raghoebar Gerry M.,
Ter Meulen JanWillem P.,
Vissink Arjan,
Meijer Henny J. A.
Publication year - 2012
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/j.1708-8208.2011.00358.x
Subject(s) - medicine , dentistry , implant , mandible (arthropod mouthpart) , radiography , prospective cohort study , orthodontics , surgery , botany , biology , genus
Background: The extremely resorbed edentulous mandible, with a bone height of 8 mm or less, is still a challenge in implant dentistry. Recently, dental implants of 6 mm in length have been developed. Purpose: The purpose of this 1‐year prospective cohort study was to evaluate treatment outcome of mandibular overdentures supported by four 6‐mm dental implants. Materials and Methods: Twelve edentulous patients with a mandibular height between 6 and 8 mm participated. The patients were treated with an overdenture supported by four 6‐mm OsseoSpeed™ dental implants (Astra Tech AB, Mölndal, Sweden). Clinical and radiographic parameters were evaluated 1 year after completion of the prosthetic treatment. Patients' satisfaction was scored before implant surgery and 1 year after prosthetic treatment. Results: One‐year implant survival rate was 96% (two implants were lost). One patient had a fracture of the mandible in the region of one of the implants 3 weeks after implant surgery. Mean scores for plaque, calculus, gingiva, bleeding, and pocket probing depth were low. Patients' satisfaction was high. Conclusion: One‐year follow‐up data revealed that four 6‐mm dental implants inserted in an extremely resorbed edentulous mandible provided a solid basis for a bar‐retained overdenture.