Comparative Evaluation of Different Properties of Zirconia and Peek Abutments in Dental Implants: A Systematic Review

Abstract

Objectives: The aim of this review was comparative evaluation of mechanical and biological properties of zirconia and PEEK abutments in titanium dental implant supported restorations.

Methods: A comprehensive search was done in PubMed and Cochrane library electronic databases. In addition to this, manual search of the references mentioned in the studies and gray literature were done. Published articles in English languages and in vivo studies only included in this review. Keywords used in this study were “zirconia abutment” “PEEK abutment,” “dental implants,” “mechanical properties,” and “biological properties”. Boolean operators (AND, OR) were used with the combination of these keywords.

Result: The literature search yielded total 49 studies through search in electronic databases (PubMed – 45, Cochrane library – 4). Thirty five studies were removed after screening of title and abstracts. Total 6 studies were included for full text reading. Six studies were included in the review. Two out of 6 included studies compared surface roughness of different biomaterials. Fracture resistance and pattern of fracture were evaluated by two studies. Different Biological properties like accumulation of biofilm and different strains of bacteria, inflammatory cytokine level, active matrix metalloproteinase -8 levels, probing depth and marginal bone loss were the other parameters that were checked in these studies.

Conclusion: Overall no significant difference found in terms of mechanical and biological properties in between Zirconia and PEEK abutments. PEEK abutments can be used as an alternative option to zirconia abutments in esthetic region of oral cavity.