Conservative access cavity design has gained significant attention in endodontics due to its potential to preserve tooth structure, maintain tooth strength, and improve long-term treatment outcomes. This lecture will explore the principles, techniques, and clinical advantages of conservative access cavities (CAC) compared to traditional access approaches. Emphasizing the importance of preserving pericervical dentin, we will examine methods to minimize structural loss while achieving effective canal debridement and obturation. Advances in imaging and magnification have enabled more precise access designs, supporting both function and aesthetics. The presentation will also address potential challenges, such as the risk of missed canals or procedural errors and provide practical guidance to achieve successful outcomes with CAC techniques. Attendees will gain insights into case selection, decision-making, and best practices for conservative endodontic access, with a focus on balancing minimally invasive treatment with the need for comprehensive disinfection.