الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
This study was conducted to evaluate endosseous dental implants for single tooth replacement in areas of localized marginal defects of the alveolar ridge surrounded by Aluminum calcium Phosphate (AlCaP) bone substitute, with and without chitosan guided bone regeneration membrane.
The study included ten patients, five males and five females ranging from 20 to 50 years old; each having one missing single rooted tooth with localized marginal defects of the alveolar ridges.
Patients were divided into two groups were included; each group consisted of five patients
Group I:
Comprised patients who received a dental implant, surrounded by Aluminum Calcium Phosphate (AlCaP) bone substitute, and Chitosan guided tissue regeneration membrane.
Group II:
Comprised patients who received a dental implant, surrounded by Aluminum Calcium Phosphate (AlCaP) bone substitute, without Chitosan.
The preoperative phase included clinical assessment of oral hygiene, gingival and periodontal health of the patients. Radiographic assessment was performed utilizing Orthopantomographs (OPG) and periapical radiographs to assess the location of the implant and the quality and quantity of the bone in the surgical site. The periapical radiographs were scanned using a digital scanner to be converted into a TIF computer image to monitor the changes in the bone density around the dental implant. A surgical guide stent was fabricated for each patient. The stent helped in accurate positioning of the implant, and was used as a guide to uncover the implant later.