A systematic review of single-tooth restorations supported by implants

J Dent. 2000 May;28(4):209-17. doi: 10.1016/s0736-5748(99)00078-7.


Objectives: To make an inventory of clinical studies on single-tooth restorations supported by implants using a systematic review procedure and to aggregate overall survival results.

Data sources: Papers referring to single-tooth implants were located by a MEDLINE search 1990 to April 1998. Three hundred and twenty references were found, and they were subjected to a systematic review procedure.

Study selection: A three-step inclusion/exclusion procedure was applied to identify papers that represented: good scientific practice (GSP), reported results of all patients, implants and crowns for more than 2years, and had sufficient data to generate life-table analyses. The outcomes were 'implant failure' and 'crown completion'. Nine studies survived. These data showed an overall mean GSP of 0.37 with a predicted 4year implant survival of 97% (n=459), and an uncomplicated crown maintenance of 83% (n=240).

Conclusion: Single-tooth implants show an acceptable short-term survival of 4years, but crown complications are common.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review
  • Systematic Review

MeSH terms

  • Clinical Trials as Topic / standards
  • Dental Implantation, Endosseous
  • Dental Implants, Single-Tooth*
  • Dental Research / standards*
  • Dental Restoration Failure
  • Evidence-Based Medicine
  • Humans
  • Journalism, Dental / standards*
  • Outcome Assessment, Health Care / methods*
  • Survival Analysis