Hall’s Critical Decisions in Periodontology and Dental Implantology, fifth edition, is designed to guide students and practitioners in applying their decision-making knowledge in a structured and logical manner using decision trees for diagnosis, treatment selections and options, procedures in various treatments, or evaluating outcomes. This text is organized by clinical problems and is designed to help the dental practitioner make on-target decisions for optimal outcomes. Formerly called Decision Making in Periodontology, this fifth edition text has been updated and expanded, providing a broad array of topics and new techniques in periodontal therapy and dental implantology. Over 100 contributing authors share their expertise and reasoning behind their decision making, representing both North American and international thinking.