This book provides a concise and systematic approach to differentiating the origins of dental pain, one of the most common yet diagnostically challenging complaints in clinical dentistry. Beginning with a discussion about misdiagnosis, the book explores the anatomical and physiological foundations of the dental complex and the mechanisms of dentinal, pulpal, and periodontal pain. It presents clear diagnostic frameworks for interpreting pain characteristics and underlying pathology. Detailed discussions of pulp disease, pulp preservation, periodontitis, and periodontal disease are complemented by carefully defined diagnostic nomenclature for both tooth-related and periodontal pain. Designed for experienced clinicians, this guide emphasizes clinical reasoning, precise terminology, and practical diagnostic clarity, helping dentists refine their ability to distinguish between similar pain presentations and avoid common diagnostic pitfalls. A focused resource for practitioners who seek a deeper, structured understanding of toothache etiology and pain-based diagnosis.

Associate Professor Ernest Lado is a general dentist who graduated Georgetown University College of Dentistry in 1967 and practiced for 13 years; ten of which were solo private practice. In 1981 he was appointed an instructor’s position at the University of Florida, College of Dentistry, Department of Oral Medicine. He was promoted to assistant professor in 1983 and in 1988 was promoted to Associate Professor. Shortly after Prof. Lado was transferred to Oral Maxillofacial Surgery and assigned to the Student Oral Surgery Clinic, where he oversaw students diagnose, extract, and refer patients to other specific specialties for definitive treatment. Over the past 55 years, Prof. Lado has assessed tens of thousands of toothaches and has witnessed a number of misdiagnosed “toothaches." He also taught treatment planning, radiographic interpretation, emergency preparedness for the dental office, and oversaw student performance in the urgent care clinic. Prof. Lado initiated the UF Sterilization Monitoring Service in 1989 and monitored in-house as well as private practice sterilizers, for longer than 10 years, providing experienced consultation for failed spore tests.