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Tilted versus axially placed dental implants: a meta-analysis.

Bruno Ramos Chrcanovic1, Tomas Albrektsson2, Ann Wennerberg1

  • 1Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.

Journal of Dentistry
|September 21, 2014
PubMed
Summary
This summary is machine-generated.

Dental implant angulation does not significantly impact failure rates or bone loss. Tilted implants show similar survival to axially placed ones, though maxilla-only studies noted higher failure risks.

Keywords:
Axial implantDental implantsImplant failure rateMarginal bone lossMeta-analysisTilted implant

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Area of Science:

  • Dental Implantology
  • Oral Surgery
  • Biomaterials Science

Background:

  • Tilted dental implants are increasingly used, raising questions about their long-term success compared to traditional axially placed implants.
  • Understanding the comparative success rates is crucial for optimizing patient treatment and surgical techniques.

Purpose of the Study:

  • To compare the failure rates, marginal bone loss, and postoperative infection associated with tilted versus axially placed dental implants.
  • To test the null hypothesis of no difference in outcomes between the two implant placement techniques.

Main Methods:

  • A comprehensive electronic literature search was conducted in July 2014, including randomized and non-randomized human studies.
  • Data on implant failure, marginal bone loss, and postoperative infection were extracted and analyzed using risk ratios (RR) and mean differences (MD).

Main Results:

  • Overall, tilted implants (1.63% failure) showed no significant difference in failure rates compared to axially placed implants (1.81%; P=0.40).
  • A significant increase in failure rates was observed for tilted implants in the maxilla only (RR 1.70, P=0.03), but not in the mandible.
  • No significant effect of tilted implants on marginal bone loss was detected (MD 0.03 mm, P=0.32).

Conclusions:

  • Dental implant angulation differences do not appear to significantly affect implant survival or marginal bone loss.
  • Further research is needed to address potential biases and confounding factors identified in the reviewed studies.
  • Periodic reviews of implant concepts are essential for refining techniques and ensuring optimal patient treatment.