Safa’a Al Sayed Asal has completed her PhD from Tanta University and Post-doctoral Research from King Saud University, College of Dentistry. She is Assistant Professor of Prosthodontics and Implantology and Director of Infection Control Unit at Tanta Dental College. She has published more than 20 papers in reputed journals. 



One of the most perplexing and tricky aspects of complete denture prosthodontics is the selection of appropriate maxillary anterior denture teeth size chiefly when no pre-extraction records are available. Despite the use of interalar distance, interpupillary distance, and distance between the medialis angles of the eyes is considered a reliable guide for determining the size of the maxillary anterior teeth to some extent, dental literatures indicate that there is no crucial method recommended. This study introduces a new methodology (3asal Methodology) and tool for determining the maxillary anterior teeth mesiodistal width based on certain stable guides that were derived from dentate casts with angle class I arch relationship and normal teeth alignment. These guides include basically the midline and the inter-canine line (a line joining the canine cusp and tips).