All-on-X Cases from a China Dental Lab: Frameworks and Full-Arch Workflow

An All-on-X dental lab builds a full-arch prosthesis supported by multiple implants — commonly four to six, hence the “X”. These are the highest-stakes cases a laboratory handles, because an error at any stage is expensive and hard to correct on the patient. The workflow is therefore built around verification, not speed.

This guide covers the verification stages, framework materials and prosthetic options, and the case data a full-arch case requires. For the product scope, see All-on-4 / All-on-X.

The full-arch workflow

A well-run All-on-X case moves through defined checkpoints:

• Scan or impression of the implant positions, plus the bite record
• A verification stage — a jig or model that confirms the implants’ relative positions
• Framework design in CAD, checked against the verified model
• Milling or casting of the framework, then a fit verification
• Completion of the prosthesis, finishing and inspection

Skipping the verification stage is what turns a small impression error into a full-arch remake.

Framework materials and design

Frameworks are produced in milled titanium, cobalt chrome or zirconia. Milled titanium offers a precise, rigid fit for long spans; cobalt chrome is a durable alternative; zirconia suits esthetic cases within its design limits. The framework ties the implants together and carries the final teeth, so its fit and rigidity matter more than its finish.

Prosthetic options

• Screw-retained full-arch prostheses, serviceable in situ
• Bar-supported removable or fixed designs
• Individual implant crowns on the same arch where the case allows

See implant crowns and custom abutments for the components that make up the arch.

Case data the lab needs

• Implant system, platform sizes and connection types for every implant
• A scan body scan or a laboratory-scanned model with implant analogues
• A verified bite record and the opposing arch
• Soft-tissue contours and any photographs supporting the plan
• The intended material and retention type, and design notes

For a multi-implant case, missing connection data on even one implant blocks the design.

Verification and quality checkpoints

Full-arch work depends on fit verification before completion. Framework seating on the verified model, screw channel alignment, occlusion and finish are all checked before dispatch. Our quality process describes the review stages; the implant dental lab guide covers the implant-specific requirements that precede them.

Starting a full-arch case

Because these cases carry the most risk, start with a complete data set and confirm the verification stage in the workflow. Begin with a defined full-arch case, review the framework verification before completion, and evaluate the seating and occlusion on the model. To start, send a case or request a price list.