TABLE 4.

A descriptive summary of statistical significance levels of the difference between DM patients compared to non‐DM with regard to number of teeth

Study	Exposure	Number of teeth significance	Comparison
1. Shin et al 2017	DM	?	non‐DM
2. Greenblatt et al 2016	DM	?	non‐DM
3. Costa et al 2011/2013	DM	+	non‐DM
4. Patel et al 2013	DM	+	non‐DM
5. Botero et al 2012	DM	+	non‐DM
6. Sensorn et al 2012	DM	+	non‐DM
7. Kaur et al 2009	DM	?	non‐DM
8. Patiño‐Marín et al 2008	DM	+	non‐DM
9. Bacic et al 1989	DM	+	non‐DM
10. Falk et al 1989	DM	?	non‐DM
Total		6/10 have significant less teeth 0/10 no significant difference 4/0 do not specified

?, unclear/not specified; 0, no difference; +, DM patients have significantly less teeth than non‐DM.