Healing abutment materials
jeudi 31 octobre 2019
Posted by: Paola Pino
Effect of healing abutment materials on peri-implant infections
An increasing amount of research is being conducted on polymethylmethacrylate (PMMA) as a material for fixed dentures and/or healing abutments. A study from the Medical University of Graz in Austria compared PMMA with titanium (Ti) and Zirconia (Zr) healing abutments to examine if the material had an impact on peri-implant infections.
The study involved 30 subjects with two-piece Ti implants. The subjects were split into three groups, each receiving either PMMA, Ti or Zr healing abutments. The authors hypothesised that there would not be any significant difference between the three materials.
The researchers examined two different parameters. One was the inflammatory response mediated by αMMP-8 level in peri-implant sulcus fluid. The other parameter was clinical and radiographic periodontal status, which included pocket probing depths, bleeding on probing, plaque index and marginal bone loss.
No significant difference at baseline was observed for either αMMP-8 or clinical parameters. Preliminary αMMP-8 levels showed that Ti had the highest mean values at each examination date. All mean values were considered as healthy.
The results showed that clinical parameters were comparable to other studies. The authors conclude that all materials are therefore appropriate as healing abutments, with regards to biological complications. They go on to say that long-term studies are necessary to assess PMMA as a suitable material for abutments and permanent restorations.
This study was presented as an e-poster at the 2018 EAO Congress.