Impact of Insertion Torque and Implant Neck Design on Peri-Implant Bone Level: A Randomized Split-Mouth Trial

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...

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Bibliographic Details
Published in:Clinical implant dentistry and related research 2014-10, Vol.16 (5), p.668-674
Main Authors: Hof, Markus, Pommer, Bernhard, Strbac, Georg D., Vasak, Christoph, Agis, Hermann, Zechner, Werner
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
bone-implant interface
crestal bone loss
crevicular fluid analysis
Dental Implants
Dentistry
edentulous mandible
Female
Humans
implant neck design
implant stability
insertion torque
Jaw, Edentulous - surgery
Male
Middle Aged
Osseointegration
Prospective Studies
Prosthesis Design
tapered implants
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Summary: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.
ISSN:1523-0899
1708-8208
DOI:10.1111/cid.12042