Dry Milling Is Not
A Valid Protocol.
Dry milling Titanium Grade 23 ELI creates unmanageable thermal loads. This is not a matter of "speed"; it is a matter of metallurgical integrity and lab safety.
01. The Alpha-Case Phenomenon
At temperatures exceeding 600°C, Titanium reacts with Oxygen to form an Alpha-Case Layer. This brittle, oxygen-enriched skin contaminates the bonding surface.
02. Porcelain Delamination
The Alpha-Case layer has a different CTE than the bulk titanium. Porcelain will "pop" or chip away from the metal substructure within 6-12 months post-insertion.
- Result: Post-insertion recall
- Result: Lab liability exposure
03. Ignition & Explosion
Titanium fines (dust) are pyrophoric. Without coolant, sparks from a worn bur can ignite the vacuum extraction system, leading to Class D metal fires.
WARNING: STANDARD FIRE EXTINGUISHERS FAIL ON TITANIUM FIRES.
04. Spindle Longevity
Processing Titanium dry subjects the machine spindle to extreme axial vibration. This accelerates bearing wear by 400%, voiding machine manufacturer warranties.
"The invisible layer that destroys patient trust."
In forensic laboratory audits, 92% of titanium-porcelain debonding cases were linked to thermal over-exposure during dry milling. Once the Alpha-Case layer forms, mechanical sandblasting is often insufficient to restore bonding integrity.
SEM Scan: Alpha Case
Contamination Layer
Warranty Notice
ValidTi™ Material Warranties are exclusively valid for structures processed using Flood Liquid Coolant Systems. We do not provide technical support for dry-milling related fractures or porcelain failures.