Which of the following nutrients is involved in RNA synthesis and energy metabolism, which can impact the formation of new immune cells as well as healing during periodontal therapy?

Which of the following classifications is a three-wall bony defect?

A) Horizontal bone loss B) Vertical bone loss C) Fenestration D) Dehiscence

Environmental and policy factors have the potential for making profound changes at the ____ level??

A) individual B) family C) population D) global