Type of gingival infection is characterized by necrosis of gingival papillae?

Characterized by necrosis of gingival tissues, periodontal ligament, and alveolar bone. Associated with HIV infections and immunosuppressive therapies. Severe and rapid periodontal destruction. Alveolar bone loss, resulting in lack of deep packet formation. 

Adozen is 12, and your needing to calculate the weight of one medium egg, so i would do 21/12=1.75 per egg, and check your answer by doing 1.75 * 12= 21 : ) : ): ): ): ) i hoped i