Shear bond strength of metallic brackets bonded to enamel pretreated with CPP-ACP: a systematic review and meta-analysis of in vitro studies

Table 3 Risk of bias assessment of the included studies

Authors	Year	Description of sample-size calculation	Teeth randomization	Presence of a control group	Using sound teeth	Description of sample preparation	Using the materials according to the manufacturer’s instructions	Blinding of the outcome assessor	Bonding procedure executed by one investigator	Risk assesment rank
Xiaojun et al	2009	no	yes	yes	yes	yes	no	no	no	medium
Tabrizi and Cakirer	2011	no	yes	yes	yes	yes	no	no	no	medium
Uysal et al	2011	yes	yes	yes	yes	yes	yes	no	no	low
Baysal and Uysal	2012	yes	yes	yes	yes	yes	yes	no	no	low
Çehreli et al	2012	no	yes	yes	yes	yes	no	no	no	medium
Park et al	2013	no	yes	yes	yes	yes	yes	no	no	medium
Al-Kawari and Al-Jobair	2014	no	yes	yes	yes	yes	no	no	no	medium
Ladhe et al	2014	no	yes	yes	yes	no	no	no	no	high
Baka et al	2016	yes	yes	yes	yes	yes	yes	no	no	low
Velİ et al	2016	yes	yes	yes	yes	yes	yes	no	no	low
Farhadian et al	2017	no	yes	yes	yes	yes	no	no	no	medium
Gulec and Goymen	2019	yes	yes	yes	yes	yes	yes	no	no	low
Topsakal and Amuk	2019	yes	yes	yes	yes	yes	no	no	yes	low
Uy et al	2019	no	yes	yes	yes	yes	no	no	no	medium
Daneshkazemi et al	2021	yes	yes	yes	yes	yes	yes	no	no	low

ISSN: 1472-6831