Table 2.

Overview of the quality of included studies

Study	Study design	Sample description	Radiographic evaluation	Treatment description	Follow-up development	Clinical outcomes description	Adequacy of statistical analysis	Previous estimate of sample size	Quality score	Judged quality standard
O’Riordan et al. [22]	RS	Partial	OPT	Partial	Full	Partial	Descriptive	No	9	Low
Progrel et al. [14]	PCS	Partial	OPT	Partial	Full	Poor	Descriptive	No	8	Low
Renton et al. [7]	RCT	Full	OPT	Full	Full	Full	Inferential	No	15	Medium/High
Dolanmaz et al. [25]	PCS	Full	OPT	Full	Full	Partial	Descriptive	No	11	Low
Hatano et al. [16]	CCT	Full	CBCT	Partial	Full	Full	Inferential	No	14	Medium/High
Leung and Cheung [17].	RCT	Full	OPT	Full	Full	Full	Inferential	Yes	16	High
Cilasun et al. [24]	CCT	Partial	CBCT	Full	Full	Full	Descriptive	No	13	Medium
Goto et al. [61]	PCS	Full	CBCT	Partial	Full	Partial	Inferential	No	12	Medium
Monaco et al. [59]	PCS	Full	CBCT	Full	Full	Full	Inferential	Yes	15	Medium/High
Patel et al. [60]	RS	Partial	CBCT	Full	Partial	Partial	Descriptive	No	10	Low

CBCT: Cone Beam Computed Tomography; CCT: controlled clinical trial; OPT: panoramic radiography; PCS: prospective cohort study; RCT: randomized clinical trial; RS: retrospective study.