Table 2.

Study characteristics

Study	Rodriguez et al	Williams et al	Pelargonio et al	Kempa et al	Kutarski et al	El-Chami et al	Yagishita et al
Study design	Retrospective	Retrospective	Retrospective	Retrospective	Retrospective	Retrospective	Retrospective
Years of extraction	2004–2009	2001–2011	2005–2011	2003–2011	2006–2013	2007–2016	2013–2018
Year of publication	2011	2012	2012	2012	2013	2017	2019
Study site	Single center	Single center	Multicenter	Single center	Single center	Single center	Single center
Single operator	Yes	No	No	Not reported	Yes	No	Not reported
Follow-up	30 days	At least 30 days	Not reported	Not reported	Not reported	3 years	Not reported