To use 31P solid-state MAS-NMR to determine the phosphorus compounds that occur in dental casting investment material: (a) as-received, (b) after setting and (c) after burn-out and discover whether such compounds are the same in each material across a product range.
- Dental casting investment material
- Dental refractory die material
- Phosphate-bonded investment
- Solid-state NMR spectroscopy
- 31P NMR spectroscopy