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J Clin Periodontol. 2011 Sep;38(9):856-63. doi: 10.1111/j.1600-051X.2011.01750.x. Epub 2011 Jul 3.

Impact of dental implant length on early failure rates: a meta-analysis of observational studies.

Author information

  • 1Department of Oral Surgery, Bernhard Gottlieb School of Dentistry, Medical University of Vienna, Vienna, Austria. bernhard.pommer@meduniwien.ac.at

Abstract

AIM:

To test the null hypothesis of no difference in failure rates of short (minimum length: 7 mm) and longer dental implants (≥ 10 mm), a meta-analysis was performed on prospective observational trials.

MATERIALS AND METHODS:

A systematic electronic and hand search was performed to identify eligible studies. Having additional data supplied by the authors, 54 publications were included (19,083 implants).

RESULTS:

In case of mandibular implants, the null hypothesis of no impact of reduced implant length on failure within the first year of prosthetic loading could not be rejected. A significant impact of implant length could be substantiated for short machined implants in the anterior [odds ratio (OR) 5.4] and posterior maxilla (OR 3.4), while short rough-surfaced implants demonstrated increased failure rates in the anterior maxillary sites. No influence of implant diameter and denture type on the failure rate of short implants could be revealed.

CONCLUSION:

In areas of reduced alveolar bone height the use of short dental implants may reduce the need for invasive bone augmentation procedures.

© 2011 John Wiley & Sons A/S.

PMID:
21722154
[PubMed - indexed for MEDLINE]
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