الفهرس 
AbstractOnly 14 pages are availabe for public view
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Abstract
Horizontal ridge augmentation is a fairly common procedure made prior to or in conjugation with implant placement. A plethora of techniques have been proposed by authors over the years. Bone shell technique offers an ideal solution for severe horizontal and vertical ridge defects. Introduction of allograft cortical shell have permitted its uses with such technique with promising results. Material and methods: ten horizontal ridge augmentations carried out in 9 patients (four females & five males) divided equally into two groups. Autogenous bone was the grafting material in the control group while allograft was the grafting material in the study group. All patients were followed up clinically and radiographically for one year. Results: horizontal bone gain ranged from 0.6 to 5.7mm with a mean bone gain of 4±1.9 mm on the control group and 3.6±1.7 mm in the study group. Mean ISQ values for control and study group were 62.8±2.5 and 63.8±2.2 at implant insertion and increased to 71.5±1.8 and 71.9±2.8 three months after loading and then again to 72.8±2.4 and 73.1±2.7 after six months of loading. No significant difference was found between groups. Conclusion: the use of allograft cortical plate and particulate allograft as a bone shell showed comparable results to the use of autogenous bone which eliminates the need for secondary surgical site and its added donor site morbidity.