| Interleukin-6 (IL-6) and osteoprotegerin (OPG) are mediators involved in the regulating bone remodeling.
Although the relation between the polymorphism of these mediators and dental peri-implant disease has been
studied, contradictory results have been obtained. Therefore, meta-analysis has been used as a power tool to
obtain comprehensive results on this path.
In this review study, all articles with English abstracts were searched in the web of science, Embase, PubMed
and Scopus databases up to February 2021. The searches have been carried out using the Medical Subject
Heading (MESH) terms and free keywords. Amongst several studies, the heterogeneity percentage was evaluated
by two measures named the Cochrane test and I2 statistic. The analyses were done by Comprehensive Metaanalysis
v.2.0 software.
Amongst the 8 articles obtained after the abstracts reviewing, 7 proper fitted articles were selected for metaanalysis.
The combined odds ratio did not show a significant relationship between the polymorphism of IL-6
G174C gene and peri-implant disease. However, there was a significant relationship between polymorphism of
OPG (rs2073618) gene and peri-implant disease susceptibility.
Meta-analysis results showed that the CC genotype of OPG (rs2073618) increases the risk of pre-implant
disease. But there was no significant relationship between polymorphism of IL-6 G174C and peri-implant disease.
However, more studies with large sample sizes are needed to confirm these results. The discovery of genetic
markers associated with peri-implant diseases may lead to strict patient selection and increase success in implant
treatment. |