Dental Bismuth Oxide incorporated in MTA results in grey discolouration of crown. In newer material this Bismuth Oxide is replaced with? A Terbium-Dysisopropium B Tantalam Oxide C Bismuth Carbonate D Titanium Oxide 💡 Explanation Bismuth Oxide incorporated in MTA results in grey discolouration of crown. In newer material this Bismuth Oxide is replaced with? ✓ Correct Answer: B. Tantalam Oxide