الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Successful implant therapy is dependent upon an adequate volume of bone at the site of implant placement, because the long-term prognosis of dental implants is adversely affected by inadequate bone volume. The decision regarding the optimal bone augmentation protocol and the selection of materials is primarily based on the defect morphology. The guided bone regeneration (GBR) technique is highly successful for the treatment of peri-implant bone defects. Providing adequate space for bone regeneration is a fundamental principle of GBR. Space is needed to ensure the proliferation of bone forming cells while excluding unwanted epithelial and connective tissue cells.
Reinforced membranes allow space maintenance by preventing membrane collapse that may occur from pressure of overlying tissues. Titanium mesh (Ti-mesh) has excellent mechanical properties for the stabilization of bone grafts beneath the membrane. Its rigidity provides extensive space maintenance and prevents contour collapse; its elasticity prevents mucosal compression; its stability prevents graft displacement; and its plasticity permits bending, contouring, and adaptation to any unique bony defect. Another common feature of commercially available Ti mesh is its macro-porosity (in the millimeter range). This is thought to play a critical role in maintaining blood supply and is believed to enhance regeneration by improving wound stability through tissue integration. These macro- and multi-porous characteristics also create sharp spots when the material is cut or bent, and may provide an easy pathway for microbial contamination into the healing site. In addition, the sharp edges, caused by cutting, trimming, and bending of titanium mesh, might be responsible for exposure of the titanium barriers.
A new customized Ti mesh (CTi-mesh) was introduced by Neo Biotech® company for the use in Guided Bone Regeneration around dental implants. This new CTi-mesh® provide no adjustments, no trimming, no need of fixing screw, easy install and remove.
Therefore, the present study suggests (hypothesize) that the use of this CTi-mesh® provide superior results (regarding bone regeneration around dental implants) compared to the conventional Ti- reinforced non resorbable membrane.
The present study was conducted on 20 patients randomized into two equal groups (group 1 and group 2). Patients were selected according to inclusion and exclusion criteria from the outpatient clinic of the Faculty of Dentistry, Ain Shams University.
The following radiographical parameters were conducted at baseline and 4months: bucco-lingual ridge width and alveolar crestal level (ACL). CBCT was conducted at baseline and 4 months post-surgery to measure the changes in bucco-lingual ridge width and digital periapical radiography (parallel technique) at the day of surgery and 4 months post-surgery to measure ACL.
We found that both approaches from baseline to four months, revealed statistically significant increase in buccolingual width and no statistically significant difference in the ACL.
Comparing the radiographical buccolingual width changes between the two groups the statistical analysis revealed no statistically significance difference.