الفهرس 
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Abstract
This study was carried out to evaluate the use of medically grade Calcium sulfate hemihydrate on lower anterior ridge augmentation.
This study was conducted on ten patients 35 to 50 years of age having loose lower anterior teeth are considered hopeless due to the presence of deep pocketing, Grade III mobility, recession and severe bone resorption. The patients were selected for this study from the outpatient clinic of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University. The patients were free from any systemic diseases that would affect the healing process.
After the flap has been adequately reflected, the lower anterior teeth were a traumatically extracted from the socket. Then horizontal splitting of the alveolar ridge using spatula osteotome then Calcium sulfate hemihydrate paste was packed inside the split ridge and the flap was sutured.
Post operative antibiotic and non-steroidal anti-inflammatory were prescribed, all the patients were instructed to apply cold fomentations on the site of surgery during the immediate post operative few hours and proper oral hygiene was maintained by instructing the patients to use a warm antiseptic mouth wash would be initiated on the second post-operative day three times daily and continued for 2 weeks. The sutures were removed after 7 days post-surgically. Partial denture would be constructed after one month post-operatively.
Clinical evaluation was performed immediately after stitch removal; which was considered the base line for evaluation; then after 1month, 3months and 6 months
The parameter for clinical evaluation was Löe and Silness gingival index (GI). The gingival index decreased from the base line to the sixth months post operatively.
All patients recovered after surgery, they showed no complications throughout the evaluation period. None of cases showed any persistent pain, tenderness, infection throughout the study period.