The model from DentCAD is of jaw repair. Remaining teeth are in white and the replacement bridge is blue. The accompanying NC software, Dent Mill, generates toolpaths for manufacturing the bridge.

A computer-aided design program is for dental restorations, including copings, crowns, and bridge frameworks, while a knowledge-based machining software assists with manufacturing the components. The programs, DentCAD and DentMILL can work together through complete design and manufacturing.  Developer Delcam, Windsor, Ontario, Canada, says both programs can be used with software and hardware from other companies. For example, DentCAD accepts data from a scanner capable of exporting data in STL format, one used widely in the dental industry. Similarly, DentMILL can output machining toolpaths to most CNC machines.

Delcam says DentCAD Software processes are based on a series of "Wizards” that guide users. Visualization and analysis tools are available at each stage, including sectioning, measuring, shading, and transparency. These tools allow detailed inspection of shapes being developed. This ensures results exactly match patient requirements.

The program allows developing and comparing design options. For example, key parameters such as the margin line and cement thickness can be modified and the computer model will update to reflect the changes. In addition, sculpting tools let the user add or subtract material interactively, while the dynamic editing tools can reshape the complete model quickly and effectively.

The latest additions include 5-axis options, which are particularly important for making abutments because these components are difficult to produce with 3-axis machining. The 5-axis capability can reduce material waste when producing copings and bridges. Previously, all components had to be oriented in the material block so that they could be machined in a single direction. The 5-axis approach can rotate components to minimize block thickness because different pieces, or even different areas in a single part, can be machined in different directions. This allows producing a set of parts from a thinner block of material thereby reducing material costs and machining times. Five-axis machining can also machine parts with undercuts. Another option generates set-up sheets. These let users identify multiple parts manufactured in the same block of material.