Multiple choice Which of the following is not affected by trauma from occlusion? Periodontal ligament Enamel Cementum Epithelial attachment Reveal answer Fill a bubble to check yourself D Correct answer Explanation Trauma from occlusion does not affect epithelial attachment or marginal gingival. Though, it causes enamel wear, cemental tear and widening of PDL along with thickening of lamina dura.