- Clear rigid plastic
- With ribs that make them as rigid as the metal ones
- Excellent anatomical design
- Example bullet 4
President Impression Trays Regular Assorted integrate a patented intersection system of the ribs and rails providing rigidity without precedent in a plastic tray. A cumulative statistical database of more than 20 years has allowed Colt?ne / Whaledent to define the ideal shape for each tray size.
