Horizontal Ridge Deficiency Clinical Trial
Official title:
Evaluation Of Bone Regenerated After Guided Bone Regenration (GBR) Using Customized 3D Printed Polymethylmethacrylate (PMMA) Membrane in Horizontally Deficient Maxillary Aesthetic Zone
To evaluate the quantity and quality of bone generated, radiographically and histomorphometrically, after guided bone regeneration (GBR) using a membrane of 3D printed custom made (PMMA) and subsequent stability of delayed implant placement.
Guided bone regeneration (GBR), is the most widely used technique to facilitate bone generation. It depends on using a biocompatible membrane that acts as physical barrier preventing the connective tissue from invading the bone defect. To achieve maximum bone regeneration, GBR membrane should have several characteristics, including: - Biocompatibility. - Proper stiffness for space maintenance. - Prevent epithelial cell migration. - Appropriate resorption time after proper bone regeneration. Membranes used in guided bone regeneration (GBR) may have some limitations as the need of second surgery for removal of the membrane (in case of non-resorbable membranes as titanium mesh or expanded polytetrafluoroethylene (e-PTFE) membranes), lake of space maintenance (as collagen membranes) in addition to their high cost. Thus, we aim to use a commercially available material as polymethyl methacrylate (PMMA) with (GBR) to facilitate bone generation as well as subsequent implant placement. Recent forms of (PMMA), have been certified to be biocompatible and safe for skin and mucosal contact. PMMA is characterized by having high toughness which may provide a space maintenance when using as membrane in guided bone regeneration (GBR). The PMMA prosthesis can be pre-fabricated, which results in reduction of surgical time, easy technical handling and good esthetic results. In addition, it has a relatively low cost when it is compared to other types of membranes used in guided bone regeneration (GBR). ;
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