الفهرس 
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Abstract
This study was carried out to evaluate the effectiveness of the Alloplastic medical grade calcium sulphate Oral Bone Graft System on healing after surgical extraction of impacted mandibular third molars.
The study was conducted on 20 normal adult patients (12 males and 8 females) with ages ranging from 20 to 35 years of age suffering from mesio-angular or horizontal bony impacted mandibular third molars indicated for surgical extraction. They were selected from the Out-patient clinic of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University. They were free from any systemic diseases contraindicating surgical intervention.
The patients were divided into two groups:
• Study group (group 1): composed of 10 patients whose empty sockets were filled with the calcium sulphate bone graft at the time of extraction.
• Control group (group 2): composed of 10 patients whose empty sockets were left to heal without any interference.
Postoperative antibiotic and analgesic were prescribed, all the patients were instructed to apply an ice bag on the site of operation four times in the first 6 hours after surgery and proper oral hygiene was maintained by instructing the patients to use a warm antiseptic mouth wash starting on the second post-operative day and lasting for a week. The sutures were removed after 7 days.
The post-operative evaluation was done clinically and radiographically using the following parameters:
Clinical evaluation
The study was performed to evaluate
- Pain and edema using the visual analogue scale (VAS) on the second, fourth and seventh postoperative days.