“…Several studies have shown that the quality perceived by service customers directly and positively impacts their satisfaction (Prakash and Srivastava, 2019;Anabila et al, 2019;Souki et al, 2020;Miranda et al, 2018;Swain and Kar, 2018;Ahmed et al, 2019;Kant and Jaiswal, 2017;Yu et al, 2014). Likewise, investigations in the health-care field (Perera and Dabney, 2020;Coutinho et al, 2019;Giovanis et al, 2018;Batbaatar et al, 2017; and, more particularly, in dentistry (Luo et al, 2018;Bahadori et al, 2015; and in orthodontics Lyros et al, 2019;Wong et al, 2018;Pacheco-Pereira et al, 2018;Al Balushi et al, 2017;Shahrani et al, 2015;Khan et al, 2014), corroborate this finding. Finally, the perceived quality also impacts patients' attitudes and behavioural intentions (Anabila et al, 2019;Souki et al, 2020;Yu et al, 2014), making their monitoring even more pivotal to health professionals.…”