“…The term "abfraction" has been used for decades to describe the loss of tooth structure by overcoming bonds between hydroxyapatite crystals due to the stress concentration, distant from the area which the force was applied (LEE;EAKLE, 1984;GRIPPO et al, 2004;MICHAEL et al, 2009). Actually, occlusal interferences, parafunctional habits and bruxism change the magnitude, direction, frequency, duration and localization of the occlusal contacts, which result in different biomechanical behavior in these non-physiological situations (OMMERBORN et al, 2007;BRANDINI, PEDRINI, et al, 2012;BRANDINI, TREVISAN, et al, 2012;SOARES et al, 2015;ZEOLA et al, 2015). Then, these excessive loads generate dental tissues flexion which reaches the ultimate structure resistance and makes the structure more susceptible to other NCCLs etiological factors (LEE E EAKLE, 1984;MICHAEL et al, 2009).…”