BioMed Research International

Review Article

Effect of Zirconia Dental Implant Surfaces on Bone Integration: A Systematic Review and Meta-Analysis

Table 2

Results of quality assessment.
Quality questionsstudies
Montero et al. 2015Thoma et al. 2015Kim et al. 2015Park et al. 2013Chung et al. 2013Shon et al. 2014Ghahlert et al. 2012Hoffmann et al. 2012Aboushelib et al. 2013Koch et al. 2010Shin et al. 2011Gahlert et al. 2009Schliephake et al. 2010Depprich et al. 2008Kohal et al. 2016
Was the allocation sequence already generated and applied?YesYesUnclearYesYesYesYesYesyesUnclearYesYesUnclearUnclearYes
Were the groups similar at baseline or were they adjusted for confounders in the analysis?YesYesYesYesYesYesYesYesYesYesYesYesYesYesYes
Was the allocation to the different groups adequately concealed during the experiment?UnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearYes
Were the animals randomly housed during the experiment?UnclearUnclearUnclearYesUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclear
Were the caregivers and/or investigators blinded from knowledge which intervention each animal received during the experiments?UnclearYesUnclearUnclearUnclearUnclearUnclearUnclearYesUnclearUnclearUnclearUnclearUnclearUnclear
Were animals selected at random for outcome assessment?UnclearYesUnclearYesUnclearYesUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclear
Was the outcome assessor blinded?UnclearUnclearUnclearUnclearUnclearUnclearUnclearUnclearYesUnclearUnclearUnclearUnclearUnclearYes
Were incomplete outcome data adequately addressed?YesYesYesYesYesYesYesYesYesYesYesYesYesYesYes
Are reports of the study free of selective outcome reporting?YesYesYesYesYesYesYesYesYesYesYesYesYesYesYes
Was the study apparently free of other problems that could result in high risk of bias?YesYesYesYesYesYesYesYesYesYesYesYesYesYesNo