Short answer
A milled titanium bar is the substructure of a full-arch implant prosthesis: designed in CAD on the implant scan, milled from titanium, screwed to the abutments and covered by the teeth. The design starts from the tooth setup so the bar fits inside the prosthesis. In vitro, milled bars show clinically acceptable fit.
What it is
The metal framework under a full-arch implant prosthesis. We design the bar in CAD on your implant scan and mill it from titanium. It screws to the abutments and carries the teeth on top: denture teeth processed onto it in acrylic, or a milled PMMA or zirconia superstructure.
If you want the superstructure made here too, order the complete service: zirconia on a titanium bar or PMMA full-arch bridge. This page covers the bar as a standalone order.
When to prescribe it
A milled bar is the framework behind the acrylic hybrid. In a 2018 series from New York University, 20 arches were restored on CAD/CAM milled titanium frameworks. Over 48 months no prosthesis had to be replaced; there were 16 occlusal adjustments and 5 broken denture teeth, all repaired chairside.
That last number is the weak point of the combination. A German cohort followed for up to 17 years found a higher risk of veneer fracture on titanium-resin prostheses than on metal-ceramic ones. The bar takes care of the framework; the material on top decides what maintenance looks like.
How we make it
Smile Digital Lab, a digital implant lab in São Paulo, Brazil, designs and mills the bar in-house from the approved tooth setup or a scan of the current prosthesis: that volume decides where the bar sits. Every stage of your case is validated and logged, the bar goes through eight checks before it ships, and you follow the case’s phase in the portal.
What to send
The basics are in our case submission guide and the intraoral scanning guide. A bar depends on the position of every implant at once. One poorly captured scan body is enough to compromise passive fit, so check each one before you send.
Frequently asked questions
Why does the bar need a tooth setup first?
The bar has to sit inside the teeth and gingiva that will cover it, with room for the veneering material and the screw access channels. Designed without a setup, a bar can show through or leave too little material on top.
How do I check passive fit chairside?
Use the one-screw test: tighten a single terminal screw and check that the bar seats on the other abutments with no rocking or gap. Repeat from the other end. Passive-fit studies on milled bars rely on the same principle.
Milled or 3D-printed titanium?
In a 2026 micro-CT study by Eid and colleagues, mean marginal discrepancy was 44 µm for additively manufactured frameworks and 49 µm for milled ones. The gap was statistically significant, but the authors rated both clinically acceptable. We mill ours.
Sources
- Passive fit of milled and additively manufactured complete arch implant-supported titanium frameworks: a micro-CT analysis · BMC Oral Health (2026)
- Four-year outcomes of full-arch fixed dental prostheses using CAD/CAM frameworks: a retrospective review of 15 cases · Journal of Clinical and Experimental Dentistry (2018)
- Technical and biological complications of implant-supported fixed complete dentures: a retrospective cohort study with up to 17 years of follow-up · International Journal of Implant Dentistry (2026)