The Middle Ground Between Filling and Crown.
Onlays (or Partial Crowns) are chemically retained restorations that require precise planning. The transition from the preparation margin to the restoration must be seamless to allow for proper cleaning and bonding.
Our Dental Onlay Design Service excels in Biomimetic Design. We restore the tooth’s natural morphology while ensuring that the functional cusps are adequately protected (shaved down) to withstand masticatory forces.
Technical Engineering Specs
We focus on “Drill Radius Compensation” to ensure these complex geometries fit your die perfectly:
Design Parameters
- Cusp Coverage: Minimum 1.5mm reduction ensured for E.max/Ceramic strength.
- Internal Fit: Drill radius blocked out to prevent binding on sharp prep corners.
- Cement Gap: Optimized (50-60µm) for resin cement viscosity.
- Margins: Smooth, rolling margins to prevent chipping during milling.
Specialty Designs
- Tabletops (Occlusal Veneers): Minimal prep designs for raising VDO (Vertical Dimension).
- Vonlays: Combination of buccal veneer and occlusal onlay for premolars.
- 3/4 Crowns: Preserving the buccal wall for esthetics.
Why Outsource Onlays?
Onlays are tricky. If the prep has undercuts, the design software needs careful manual blocking. Instead of struggling with path of insertion issues, let China Dental Designs handle the geometry. We verify every file for manufacturability before sending it back.
Seamless Overnight Workflow
- Scan: Ensure the preparation margins are visible and distinct from the gums.
- Specify: Material (e.g., IPS e.max CAD) and desired contact strength.
- Receive: Download the STL file by 8:00 AM EST.
Complex Case? No Problem.
Send us a Tabletop or Vonlay case to test our precision.
Email your STL files to: chinadentaldesigns@gmail.com


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