Aim:The aim of this study is to assess the prevalence, severity, and extent of periodontitis through full-mouth examination of CAL, and its association with socioeconomic status, in a sample of adult Egyptian population. Methodology:The study was carried out on 581 patients with age group 18-80 years old, attending the outpatients' clinic of the diagnostic center at Faculty of Dentistry, Cairo University, Egypt. A full mouth periodontal chart was filled for each patient, the evaluated parameters were: clinical attachment level (CAL), probing depth (PD), percentage of bleeding on probing (BOP), gingival recession (GR), percentage of dental plaque, furcation involvement and tooth mobility.A full questionnaire was filled for each patient through a face-to-face personal interview using simple, short, easily comprehended questions including a section for demographic information of age, sex, social, educational levels, medical history, oral hygiene and smoking habits of the patient.Results: Among the whole study population (581patients), gingivitis was the most prevalent periodontal disease (50.3%). The most prevalent periodontitis stage was Stage II (36.8%) while the least prevalent was Stage IV (8.2%). The most prevalent periodontitis grade was Grade B (42.1%) while the least prevalent was Grade C (19.9%). Conclusion:There was a statistically significant association between periodontal diseases and Age, Diabetes history, Oral hygiene and Smoking.

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Aim:The aim of the study was to evaluate the effect of platelet rich fibrin on post-operative pain after surgical depigmentation. Methodology: Twenty-four patients with gingival pigmentation were recruited and randomly assigned to control group; non-eugenol periodontal pack only, or to test group; L-PRF with periodontal pack. Gingival depigmentation was done using a combination of scalpel and bur techniques and both groups were covered using periodontal pack. Post-operative pain was measured using visual analogue scale (VAS) was tested and compared. Results: In the control group, 100% of the patients reported pain ranging from moderate to distressing pain after the 5 th day while in the test group 8.3% reported very mild pain after the 5 th day. Conclusion: Using PRF after gingival depigmentation results in decreased post-operative pain when compared to using periodontal packs alone.