Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Jan;105(1):51-8. Validation of instruments to measure the symptoms and signs of oral lichen planus. Chainani-Wu N, Silverman S Jr, Reingold A, Bostrom A, Lozada-Nur F, Weintraub J. Source Department of Orofacial Sciences, University of California, San Francisco, CA 94143-0658, USA. [email protected] Abstract OBJECTIVE: The aim of this study was to validate the visual analog scale (VAS), numeric rating scale (NRS), and change in symptoms scale (CSS) in measuring symptoms of oral lichen planus, and the modified oral mucositis index (MOMI) in measuring the signs of oral lichen planus. STUDY DESIGN: Criterion validity, construct validity, and internal consistency […]