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Peri-implant bone loss in cement- and screw-retained prostheses: systematic review and meta-analysis
Marcelo L de Brandão1, Mario V Vettore, Guaracilei M Vidigal Júnior
1Implantology Department, INOVI, Vitória, ES, Brazil.
Aim:
The aim of this systematic review and meta-analysis was to assess and compare peri-implant marginal bone loss in cement- and screw-retained prostheses.
Material And Methods:
Electronic database and manual searches were undertaken to identify trials, prospective or retrospective studies reporting on radiographic marginal bone loss around dental implants restored with cement- and/or screw-retained prostheses. Two reviewers independently conducted the article selection and data extraction. Random-effects models were used to obtain estimates of peri-implant marginal bone loss [mean, 95% confidence intervals (CI)].
Results:
Of the 1217 identified studies, nine finally met the inclusion criteria. 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.
Conclusion:
There is no evidence to support differences in the marginal bone loss through indirect comparison between cement and screw-retained restorations.
