FAQ
What is mirror imaging in CAD design?
A straight answer first, then the context behind it, from the technicians who do the work.
THE SHORT ANSWER
Mirror imaging in dental CAD design is a technique where the software duplicates the contralateral tooth's anatomy to generate a baseline restoration geometry. The technician uses the opposing healthy tooth as a reference, flips it digitally, then refines the result for occlusion and tissue contours. It reduces design time on single-unit restorations and improves symmetry on anterior cases.
THE CONTEXT
What sits behind it
For restorative dentists sending anterior cases, symmetry is one of the most visible failure points. A central incisor restoration that is even 0.3 mm wider than its contralateral neighbor reads as wrong to the patient immediately. Mirror imaging gives the CAD technician a structurally sound starting point derived from actual anatomy rather than a library tooth average, which is the alternative in most generic milling workflows.
The practical gain is speed without the symmetry tradeoff. On a lateral incisor or canine where the contralateral tooth is intact and unrestored, a technician using mirror imaging can cut 10 to 15 minutes of baseline design time per unit, then spend that recovered time on emergence refinement and contact shaping. That matters when a case has four anterior units and the dentist needs it back in five business days.
For prosthodontists managing full-arch or complex anterior rebuilds, mirror imaging works at the planning stage too. Diagnostic wax-up data captured from a CBCT or intraoral scan can be mirrored to establish a bilateral framework before the technician adjusts for individual tooth wear, gingival position, and midline. Dani's CAD team uses this approach as a first pass on any anterior case involving two or more contiguous restorations.
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