Clinical Stomatology (Estomatologia Clínica) is an educational and scientific e-book developed collaboratively by faculty members, residents, and postgraduate students from the Department of Stomatology and the Graduate Program in Dentistry at the Federal University of Paraná (UFPR), Brazil. The book was conceived as a comprehensive support resource for the teaching and learning of oral medicine and oral pathology, integrating evidence-based knowledge with clinical experience. The publication addresses fundamental and advanced topics in clinical stomatology, including oral potentially malignant disorders, oral cancer, infectious diseases, autoimmune and immune-mediated conditions, oral manifestations of systemic diseases, odontogenic lesions, oral pathology, and therapeutic approaches. The chapters combine theoretical foundations with clinical, radiographic, and histopathological correlations, aiming to facilitate diagnostic reasoning and decision-making in clinical practice. Designed for undergraduate and graduate students, residents, clinicians, and specialists in dentistry and related health fields, this e-book seeks to bridge teaching, research, and extension activities, contributing to the dissemination of high-quality, accessible, and up-to-date knowledge in oral medicine and oral pathology.