ABSTRACT
Subject(s)
Female , Humans , Male , Pregnancy , Abscess , Branchial Region , Branchioma , Clavicle , Diagnostic Errors , Drainage , Epithelium , Fistula , Inflammation , Lymphoid Tissue , Neck , RecurrenceABSTRACT
The purpose of the present study was to investigate the effect of Bioactive glass on bone regeneration in the experimental mandibular bone defects. Five rabbits, weighing about 2.0kg, were used. Three artificial bone defects, 5x5x5mm in size, were made at the inferior border of the mandible. In the experimental group 1, the bone defect was grafted with Biogran and covered with Bio-Gide resorbable membrane. In the experimental group 2, Biogran was grafted only. In the control group, the bone defect was filled with blood clot and was spontaneously healed. The animals were sacrificed at 1, 2, 4, and 8 weeks after the graft. Microscopic examination was performed. Results obtained were as follows: In the control group, the osteoid tissue was observed at week 1 and the bone trabeculi were connected each other and matured at week 2. The lamellar bone formation appeared at week 4, and the amount of bone tissue was increased at week 8. In the experimental group 1, the fibrous tissue was filled between the granules of Bioactive glass and the cartilage formation was found adjacent to the normal bone at week 1. The bone tissue was formed between the granules at week 2, while the amount of bone tissue increased and the lamellar bone formation was observed at week 4. The lamellar bone was increased at week 8. Histologic findings were Similar between the experimental groups 1 and 2, although the amount of Bioactive glass granules lost was increased in the latter. These results suggest that new bone formation is found around the Bioactive glass granules grafted into the bone defects, and the membrane plays a role in keeping the granules and preventing the fibrous tissue invasion.
Subject(s)
Animals , Rabbits , Bone and Bones , Bone Regeneration , Cartilage , Glass , Mandible , Membranes , Osteogenesis , TransplantsABSTRACT
Although today most injuries of face and head are the result of traffic accident, dog bites are a cause of facial injuries in children. In recent years, general guidelines have been established concerning the surgical treatment of facial dog bite injuries in children. Contrary to past beliefs, primary closure of selected bites produces the best outcome for patients without increasing the risk of infection. Special attention is attached to the functional and aesthetic outcome. The purpose of this article is to provide the oral and maxillofacial surgeon about management of facial dog bite injuries and guidelines for effective and rational treatment with review of a literature. We report a case of multiple facial dog bite injuries treated surgically by primary closure of the wound and secondary revision with rotation flap after excision of partial necrotic tissue.