Veneer & Smile Design: The 5-Step Digital Workflow

Veneer and smile design cases are the most visible work we do — literally. Unlike a crown on a second molar, a veneer on tooth #8 is the first thing a person sees when they smile. The stakes are high, revisions are costly, and approval by both clinician and patient must happen before you bond anything.

Over the years, we've refined a five-step digital workflow that consistently produces veneer designs that are approved on the first presentation — to both the dentist and the patient. Here's how it works.

What Is Digital Smile Design (DSD)?

Digital Smile Design is a planning protocol that combines facial photography, dental scanning, and CAD tools to design a smile that is proportional, esthetic, and predictable. It functions as a communication bridge between clinician, patient, and laboratory.

When implemented correctly, DSD eliminates the guesswork from veneer treatments and replaces subjective feedback ("make them brighter") with objective reference points ("tooth width-to-height ratio 0.75–0.80").

Step 1: Facial Analysis — The Foundation of the Design

Every smile design must start with the face, not the mouth. We need to know:

• Facial midline — does the dental midline align with it? Should it?
• Lip line at full smile — how much tooth and gingiva is visible?
• Incisal edge position — where do the upper incisors sit relative to the upper lip at rest?
• Smile arc — does the incisal curvature follow the lower lip? (It should, in most esthetically driven cases)

For this step, we need at minimum: a full-face retracted smile photo, a relaxed smile photo, and a profile view. High-resolution JPEG files are fine — we work with these in our DSD planning software before touching the 3D model.

DSD analysis: midline, incisal edge, and tooth proportion guidelines overlaid on retracted smile photo

Step 2: 2D Design Mock-up — Patient Preview Before CAD

Before we open Exocad, we create a 2D wax-up overlay on your patient photographs. Using proportion guidelines and smile design software, we:

1. Define tooth positions relative to facial landmarks
2. Propose tooth proportions (width-to-height ratios for central, lateral, canine)
3. Define the gingival symmetry line and whether gingival contouring is needed
4. Generate a patient-preview image for initial approval

This step is where most patient expectation issues surface — and where they should be resolved, not at the try-in stage. The 2D preview gives patients a visual reference that's easy to understand and discuss.

Step 3: 3D CAD Design — Translating the 2D Plan into STL

With the 2D design approved, we open the scan in Exocad and begin the 3D design. The 2D reference serves as our blueprint:

• Tooth positions locked to the midline and incisal edge height defined in Step 2
• Labial contours designed to match the approved tooth proportions
• Palatal surface designed to support the occlusal scheme (avoid heavy contacts on veneers — dentin-bonded veneers are not designed for occlusal load)
• Minimum thickness verified: 0.5mm at the incisal, 0.3mm minimum at cervical for feldspathic / pressable materials; 0.4mm minimum for zirconia

Step 4: Clinical Validation with a PMMA Try-in

For complex multi-veneer cases (4 or more teeth), we strongly recommend a PMMA or wax try-in before the final design is approved and the restoration milled in ceramic. The try-in serves three validation functions:

1. Esthetic validation — patient sees the result in their mouth, not on a screen
2. Occlusal validation — confirm the design doesn't create premature contacts in function
3. Phonetic validation — "S" and "F" sounds should not be affected by the new incisal edges

If modifications are needed after the PMMA try-in, we apply them to the digital model before the final design is signed off. This is far less costly than modifying a fired ceramic restoration.

Step 5: Final Delivery — What You Receive

After approval, we deliver:

• STL file for each veneer unit (or a grouped restoration file)
• Design notes covering minimum thickness measurements, contact specifications, and shade notes if applicable
• 3D screenshot from labial, palatal, and incisal views
• Patient preview image — the 2D composite — which you can share with the patient at bonding appointment

What to Send Us for Smile Design Cases

• Full-arch prep scan (STL)
• Opposing arch scan (STL)
• Buccal bite at MIP (STL)
• Full-face smile photo — natural smile, no retractor
• Retracted smile photo — lips retracted, frontal view
• Profile view photo
• Patient esthetic preferences — shape references, shade target
• Gingival contouring planned? (Yes/No)
• Material: feldspathic, E.max press, zirconia veneer
• Lab name / clinician preferences for contact design

The most successful smile cases we've designed have one thing in common: a clinician who invested time in the reference photography and communicated the patient's expectations clearly. Give us that foundation, and we'll deliver a digital smile your patient will want to show everyone they know.