A systematic review of single-tooth restorations supported by implants
Received 1 June 1999; accepted 4 October 1999.
Abstract
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% (), and an uncomplicated crown maintenance of 83% ().
Conclusion: Single-tooth implants show an acceptable short-term survival of 4years, but crown complications are common.
Department of Occlusal Reconstruction and Oral Function, College of Dental Science, Faculty of Medical Sciences, University of Nijmegen, 6500 HB Nijmegen, The Netherlands
ABSTRACT
years, 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 4
