Basic Informations

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2019 ??? ????

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2016 ??? ????

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2017-2018

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2011 –2017

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2007 -2010

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2004 -2007

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 2002 -2004

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2001 - 2002

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2001– 2002

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Master Title

Evaluation of the efficacy of Subgingival Debridement using ultrasonic scaler versus Modified Widman Flap in managing advanced chronic periodontitis

Master Abstract

Summary The destructive action of chronic periodontitis on the periodontal tissues has provided a continuous challenge to the dental profession. The goals of periodontal therapy are to eliminate the microbial etiology and contributing local risk factors for periodontitis, arrest the disease progression and preserve the dentition in a state of health, comfort and function with appropriate esthetics and to prevent the recurrence of periodontitis and reduce tooth loss. Subgingival debridement remains the gold standard in the treatment of periodontal diseases. A thorough cleaning of root surfaces exposed in periodontal pockets is the main goal regardless it is performed with surgical or non surgical approaches. The present study was conducted to compare subgingival debride- ment performed non surgically using ultrasonic scaler with perio-tips inserts and MWF procedure in patients suffering from chronic advanced periodontitis. Twelve patients with an age ranging from thirty five to fifty years were included in this study. This work was limited to patients who had at least one site with CAL = 5mm in 2 quadrants. The baseline clinical parameters used included; plaque index, gingival index, PPD and CAL. Preoperatively all patients received supragingival and subgingival debridement, oral hygiene instructions, systemic antibiotics and mouth washes. After four weeks, MWF was performed on one side while ultrasonic debridement was performed on the other side. Recall appointments were carried out at one, three and six months postopera- tively performing the same clinical parameters used preoperatively. The current study showed that there were no statistically significant changes of both plaque index and gingival index scores for both treatment modalities at the different observation periods. The results of this study revealed that both treatment modalities led to highly significant improvement in the mean PPD when compared to the baseline throughout the experimental period. Regarding MWF treated sites there was statistically significant difference in the mean PPD and the mean CAL at one, three and six months (P < 0.001) when compared to the baseline. Same results were also shown regarding sites treated with UD. Comparing the percentage reduction in PPD in the two treated sites, there was no statistically significant difference between the two treatment modalities after one, three and six months (P > 0.05). More- over, comparing the percentage gain in CAL in the two treated sites, there was statistically significant gain (P < 0.05) in the UD treated sites than MWF sites at one and six months. However there was no statistically significant difference at three months between the two groups.

PHD Title

¬Effect of Platelet Rich Fibrin on the Healing of Intra-bony Defects: A Clinical and Experimental Animal Study

PHD Abstract

Summary The destructive action of periodontitis on the periodontal tissues has provided a continuous challenge to the dental profession. The goals of periodontal therapy are to eliminate the microbial etiology and contributing local risk factors for periodontitis, arrest the disease progression and preserve the dentition in a state of health, comfort and function with appropriate esthetics and to prevent the recurrence of periodontitis and reduce tooth loss. In addition, regeneration of the periodontal attachment apparatus, where indicated, may be attempted. The present study was conducted to evaluate the effect of platelet rich fibrin on the healing of periodontal intra-bony defects. This evaluation was accomplished clinically, radiographically and histologically. Fourteen patients with an age ranging from twenty five to fourty five years were included in this study. This work was limited to patients who had at least one site with CAL = 5mm. The baseline clinical parameters used included; PPD, CAL and GML. Also radiographic parameters including linear measurements of bone changes and measurement of bone density were performed. Preoperatively, all patients received supragingival and subgingival debridement and oral hygiene instructions. After four weeks, OFD was performed and intrabony defects were treated either by PRF only, PRF+collagen membrane or xenograft + collagen membrane. Recall appointments were carried out after six months postoperatively performing the same clinical and radiographic parameters used preoperatively. In addition, an experimental animal study on 5 dogs was performed. Surgically induced intrabony defects in the form of box shaped one wall intrabony defects 5x5mm were created. The defects were treated either by PRF only, PRF+collagen membrane or xenograft + collagen membrane, while one defect was left to heal without placing any material inside it. Histologic evaluation was performed after two months healing period. The results showed that statistically significant improvement was achieved in the three clinical groups regarding, PPD reduction, CAL gain, defect fill, defect resolution and percentage of bone density change, when compared to baseline throughout the study period. However on comparing the three studied groups, no statistically significant differences were observed between them. The histologic analysis for the regenerated periodontal tissues revealed significant differences between the studied experimental groups.