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Impact of Insertion Torque and Implant Neck Design on Peri‐Implant Bone Level: A Randomized Split‐Mouth Trial
Author(s) -
Hof Markus,
Pommer Bernhard,
Strbac Georg D.,
Vasak Christoph,
Agis Hermann,
Zechner Werner
Publication year - 2014
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/cid.12042
Subject(s) - medicine , implant , dentistry , mandible (arthropod mouthpart) , bone resorption , orthodontics , surgery , botany , biology , genus
Purpose The aim of this study is to assess the impact of insertion torque and implant neck design on peri‐implant bone levels and gain insights into dynamic crestal tissue alterations by radiological, clinical, and biochemical examinations. Material and Methods In this prospective trial, a total of 84 implants (four implants in each patient) in the interforaminal region of 21 edentulous mandibles were randomly alternated according to a split‐mouth design. Implant placement was performed using different insertion torques (≤20 Ncm vs >50 Ncm ). In each group, one machined and one anodized implant neck design (1.5 mm length) was used in the same jaw side. Evaluation of peri‐implant tissues involved radiological, clinical examination and immunoassays for interleukin‐1β. Results No significant influence of insertion torque or implant neck design on peri‐implant bone level was found. Protein levels of interleukin‐1β in the peri‐implant crevicular fluid revealed no difference between both insertion torque groups and different neck designs. Conclusion Interactive effects of insertion torque and neck surface modification may exist; however, no clinically significant differences in marginal bone resorption after 1 year could be observed in the edentulous anterior mandible.