1. LINEA ALBA Histopatologis : • Hiperortokeratosis • Edema intraseluler, infamasi kronis ringan 2. MORSICA TORIO BUCCARUM (CHRONIC CHEEK CHEWING/ HABITU AL CHEECK CHEWING) Oral mucosa exhibiting greatly thickened layer o parakeratin with ragged surace colonized by bacteria. Histopatologis : • Hiperparakeratosis olonisasi bakteri permukaan