الفهرس 
Introduction and Review of literatureOnly 14 pages are availabe for public view
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Abstract
Chronic periodontitis is characterized by loss of clinical attachment due to destruction of the periodontal ligament and loss of adjacent supporting bone.
Regeneration of the natural apparatus subsequent to its destruction has long been the goal of periodontal therapy. Over the last years, anumber of therapeutic modalities have been developed in an attempt to achieve this goal.numerous clinical periodontal researches suggested that significant regeneration of periodontal osseous lesions can be obtained following treatment by osseous grafts, guided tissue regeneration technique or their combination.
PRF has been used as an autologous grafting material because of its ability to accelerate physiologic wound healing and new bone formation
Biodentine is tricalcium silicate-based cements (TSBCs) could be used as bone substitutes for implants because of its established bioactivity, biocompatibility and enhanced mechanical properties.
This study was designed to evaluate and compare the efficacy of PRF combined with Biodentine and Biodentine alone in the treatment of class II furcation defects.
Fourteen patients with age ranging from 20 to 55 years old suffering from chronic periodontitis with class II furcation involvement were included in the present study. 28 furcation defects included 20 mandibular first molars. Eight maxillary first molars with buccal furcation only were also included.
The total 28 Class II furcation defects were randomly allocated to one of the following treatment modalities as follows:
group I consisted of 14 furcation defects treated by open flap debridement and biodentine occlude furcation entrance.
group II consisted of 14 furcation defects treated by open flap debridement with biodentine occlude furcation entrance and covered by PRF membrane.
Clinical parameters including gingival index,plaque index,probing pocket depth and clinical attachment level were recorded at the initial phase of treatment and through out the study period.Radiographic linear and radiomertric measurements were performed at baseline,three and six months following surgery.
Radiographic parameters include linear and radiomertric measurements
All radiographic films were digitalized using a digital camera (Nikon 16 Megapixels to obtain qualitative information regarding density changes by the use of computerized image analysis program (digora).