UPCAM 4.0 (a dental CAM layout software developed by UP3D) has been fully upgraded in terms of operational experience and functional practicality. Its core optimizations focus on operational fluency and convenience, including rendering, faster posture adjustment, optimized configuration and new material pages, as well as upgraded drawing areas, 90-degree processing and interactions in each step. The new functions cover multiple production scenarios, including square/disc automatic layout, hole closing, reverse clamping of prefabricated abutments, independent setting of Zirconia XYZ scaling ratios, etc. It supports automatic uploading of NC files to cloud disks, online authorization, import and export of color schemes/blank templates, and dynamic roaming, further improving production efficiency and restoration accuracy, while balancing convenience and practicality.