Review Article
Effect of TiO2 Abutment Coatings on Peri-Implant Soft Tissue Behavior: A Systematic Review of In Vivo Studies
Table 2
Risk of bias results for the studies using the OHAT rating tool.
| Authors | Selection bias | Confounding bias | Performance bias | Attrition bias | Detection bias | Selective reporting bias |
| Glauser et al. [47] | − | + | − | ++ | − | + | Schupbach and Glauser [48] | −− | + | − | + | − | + | Wennerberg et al. [41] | ++ | ++ | + | + | + | ++ | Göthberg et al. [42] | ++ | + | ++ | + | ++ | + | Raes et al. [43] | ++ | ++ | + | + | − | ++ | Hall et al. [44] | ++ | ++ | + | ++ | + | ++ | Dib-Zaitum et al. [45] | ++ | + | ++ | ++ | − | ++ | Farrag and Khamis [46] | ++ | ++ | + | ++ | + | + | Ungersböck et al. [40] | − | + | − | − | + | ++ | Susin et al. [35] | ++ | ++ | + | ++ | ++ | ++ | Fukayo et al. [37] | − | − | − | + | − | ++ | Rossi et al. [36] | − | ++ | − | + | + | + | Areva et al. [39] | + | + | − | + | − | + | Paladan et al. [38] | + | + | − | − | − | + | Welander et al. [34] | − | − | − | + | + | + |
|
|
Note: “++”: definitely low risk of bias; “+”: probably low risk of bias; “–”: probably high risk of bias; and “– –”: definitely high risk of bias.
|