How mechanical stresses modulate enamel demineralization in non-carious cervical lesions?

Objective: To introduce an experimental non-carious cervical lesion (NCCL) model for studying the influence of presence and type of stress (tension or compression) on acid effects involved in NCCL formation on the enamel near the cement-enamel junction (CEJ).

Methods: 108 bovine incisors were cut into 18 × 3×3 mm beams, with a notch in the cervical region to generate a standardized area of stress concentration. Half of the specimens were immersed in distilled water and the other half in acetic acid solution (pH 4.