The Use of the Lateral Maxillary Sinus Wall Bony Plate (BP) in the Reconstruction of the Alveolar Ridge (RAR)
Author(s) | |
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UAB Vilniaus implantologijos centro klinika | |
Date Issued |
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2013-05-10 |
Resorption of the alveolar bone presents a clinical problem. It creates an anatomically less favorable foundation for ideal implant placement, especially in the esthetic zone. This may jeopardize an esthetic outcome and compromise functional and structural aspects of the treatment. Ideally, it is desirable to provide a treatment that would aim at reconstructiont of the natural hard and soft tissue contours in preparation for the proposed implant prosthesia. In majority of cases, only such approach makes it possible to attain perfect aesthetics. Therefore, for prostheticdriven implant therapy, regeneration of the lost bone often is necessary. There are many different predictable bone augmentation techniques using various bone transplant types. However, autogenous bone has been the only known source of osteogenic cells to date. It is also the cheapest, most predictable osteogenic graft for osseous tissue regeneration and, thus, is considered as the golden standard for oral bone reconstruction. There are two types of autogenous bone graft donor sites in the human body: intraoral and extraoral. Unless big quantities of bone graft is needed, intraoral donor sites are more convenient to harvest it. It causes less morbidity, easier grafting procedures (compared to an extraoral bone harvesting) and has closer embryological origin to recipient site. Intraoral autogenous bone harvesting sites (such as symphysis, ascending ramus, body and coronoid process of the mandible, maxillary tuberosity, zygomatic buttress) provide an adequate quantity of graft material with some osteogenic, osteoinductive, and osteoconductive properties, but have a big disadvantages due to still relatively highly invasive procedures and morbidity at the donor site, need for big quantities of bone substitutes and possibility of complications related with the second surgical site: inferior alveolar nerve injury, soft tissue injury, teeth numbness, infection. Therefore, if RAR and open sinus floor