Peri-implant bone loss is one parameter used to evaluate the success of dental implants. The aim of this review was to compare peri-implant bone loss between cement and screw retained prosthesis.
The Medline, SCOPUS, ISI Web of Knowledge and Cochrane Central Register of Controlled Trials (CENTRAL) databases were searched. Five journals were hand searched.
Randomised or comparative dental implant trials and prospective or retrospective studies on dental implants that reported on peri-implant marginal bone loss assessed radiographically were included. Only studies with at least 12-months follow up in English were included. Studies were independently selected and data abstracted. Random-effects models were used to obtain estimates of peri-implant marginal bone loss.
- Nine studies were included; only two studies included both cement- and screw-retained prostheses, three assessed only screw-retained prostheses, and four evaluated only cement-retained prostheses.
- Pooled mean marginal bone loss was 0.53 mm (CI 95%, 0.31–0.76 mm) for cement- retained prostheses and 0.89 mm (CI 95%, 0.45–1.33 mm) for screw-retained prostheses
The authors concluded
There is no evidence to support differences in the marginal bone loss through indirect comparison between cement and screw-retained restorations.
Comment
The authors discuss issues related to the quality of the included studies with none of the included studies reporting sample size calculations. The limited number of direct comparisons is also an issue when trying to answer the question posed.
Links
de Brandão ML, Vettore MV, Vidigal Júnior GM. Peri-implant bone loss in cement- and screw-retained prostheses: Systematic review and meta-analysis. J Clin Periodontol. 2012 Nov 28. doi: 10.1111/jcpe.12041. [Epub ahead of print] PubMed PMID: 23297703.
Esposito M, Murray-Curtis L, Grusovin MG, Coulthard P, Worthington HV. Interventions for replacing missing teeth: different types of dental implants. Cochrane Database of Systematic Reviews 2007, Issue 4. Art. No.: CD003815. DOI: 10.1002/14651858.CD003815.pub3.
Grusovin MG, Coulthard P, Worthington HV, George P, Esposito M. Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental implants. Cochrane Database of Systematic Reviews 2010, Issue 8. Art. No.: CD003069. DOI: 10.1002/14651858.CD003069.pub4.
