“…All reported associations regarding edentulism, number of teeth, number of missing teeth, and number of occluding pairs are shown in Table 2. Five studies reported significantly lower OHQoL in edentulous participants than in dentate participants (Hoeksema et al, 2017;Hoeksema et al, 2018;Motallebnejad, Mehdizadeh, Najafi, & Sayyadi, 2015;Stromberg, Holmen, Hagman-Gustafsson, Gabre, & Wardh, 2013;Zuluaga, Montoya, Contreras, & Herrera, 2012), two studies demonstrated a positive association between edentate patients in comparison to dentate patients and OHQoL (Lee, Yang, Ho, & Lee, 2012;Souza, Costa Oliveira, & Martins, 2017), and seven studies reported no significant association between edentulism and OHQoL (Alshammari, Baseer, Ingle, Assery, &Al Khadhari, 2018;Cornejo, Perez, de Lima, Casals-Peidro, & Borrell, 2013;Dahl, Wang, Holst, & Ohrn, 2011;Kohli, Sehgal, Nelson, & Schwarz, 2017;Rebelo, Cardoso, Robinson, & Vettore, 2016;Sheiham et al, 2001;Yu, Lee, Hong, Lau, & Leung, 2008). All studies regarding edentulism were crosssectional studies.…”