Corrigendum to "Clinical Behavior of Second-Generation Zirconia Monolithic Posterior Restorations: Two-year Results of a Prospective Study with Ex Vivo Analyses including Patients with Clinical Signs of Bruxism" [J. Dent. 91 (2019) 103229]. (August 2021) - Koenig, V.; Wulfman, C.; Bekaert, S.; Dupont, N.; Le Goff, S.; Eldafrawy, M.; Vanheusden, A.; Mainjot, A.