Answer the following questions

1. List the phases of Periodontal treatment plan.

2. What are the grades to describe the prognosis of periodontal disease?

3- According to the classification of periodontal diseases and conditions by the American Academy of Periodontology (AAP) in 1999,write the six main diseases and conditions.

4- How do you calculate the clinical attachment loss?

5- What are the grades of furcation involvement?

6- Describe the gingiva in health and disease