This book explores the various causes, classifications, and management strategies for dental implant failure. It examines biological factors such as infection, osseointegration failure, and host conditions (e.g., diabetes, smoking), along with mechanical and procedural issues like implant fractures, misalignment, and surgical errors. The book emphasizes early diagnosis, clinical and radiographic evaluation, and proper maintenance to improve long-term implant success. Through detailed research, case studies, and preventive strategies, it provides essential guidance for clinicians to minimize complications and enhance patient outcomes in implant dentistry.