Does your Medicare Plan G Plus cover "Major Services" for Dental?

Does your Medicare Plan G Plus cover "Major Services" for Dental, as are handled by Bluecare Dental 1A?  For example, Bluecare Dental 1A provides 50% coverage for crowns, partials, dentures, bridges, etc.   Does Plan G Plus cover these same "Major Services" and at 50%?Is there a waiting period? Also, is there a Plan G Plus document that describes what major services it covers in greater detail?