الفهرس | Only 14 pages are availabe for public view |
Abstract Diabetes mellitus is a metabolic disorder characterized by hyperglycemia with impaired glucose metabolism as the main symptom. Hyperglycemia can result from a deficiency in insulin secretion, insulin resistance, or a combination of both. In oral environment, diabetes is responsible for delayed wound healing, increased alveolar bone resorption, a risk of up to 3.4 higher than non-diabetics to develop periodontal disease, an increase in inflammatory tissue destruction and predisposition to infection. For all those reasons, it was considered a contraindication to put implant in diabetic patient. However dental implant therapy has become performed among controlled diabetic patient. The rising success of dental implants, along with the realized benefits of implant therapy, has shifted current trends to accommodate patients with controlled diabetes as good candidates for treatment. In an effort to reduce heat generation during the preparation of an implant bed, and to performing atraumatic tooth extraction and subsequent implant site preparation. Piezosurgery(PS) as a new relevant, and predictable method was introduced. PS has several advantages such as selective sectioning of the mineralized bone structures, minimizing the damage to the surrounding soft tissues. Postoperative healing after PS characterized by minimal swelling, little bleeding and postoperative morbidity is lower compared to traditional techniques. 20 male New Zealand rabbits were induced for diabetes, then had been controlled using insulin injection and were divided into 2 groups; The 1st group of 10 rabbits received implants prepared by conventional drills while the 2nd group received implants prepared by PS. All rabbits were euthanized a month after the surgery. Samples were evaluated histologically using stereomicroscope, light microscope and ESEM, then histomorphometrical analysis was done in order to estimate BIC,MBIC.Also MBD calculated using CBCT. |