Abstracts 1151 159 Oral surgery in patients with special needs under intravenous sedation: review of literature A.M. Borba 1,2,* , A.C.F. de Abreu 3 , J. Bett 2 , M.A. Brozoski 1 , M.C.Z. Deboni 1 , M.G. Naclério-Homem 1 1 Department of Oral & Maxillofacial Surgery, Faculty of Dentistry, Universidade de São Paulo - USP, São Paulo, Brazil 2 Centro Estadual de Odontologia para Pacientes Especiais, Secretaria Estadual de Saúde - Mato Grosso, Brazil 3 Medical School, Universidade de Cuiabá, Cuiabá, Brazil Introduction: Patients with unsta- ble systemic diseases or non-cooperative patients are characterized as patient with special needs and are usually submitted to dental procedures under intravenous seda- tion or general anesthesia in an operation theatre. Methods: The present study intends to review the literature over intravenous sedation in patients with special needs submitted to oral surgery, including drug protocols that could be reproducible. The PubMed data base will be searched with the terms oral surgery, special needs, spe- cial care and sedation. Publications found will be assembled and critically analyzed. Results: Few articles were published regarding intravenous sedation in patients with special needs submitted to oral surgery. Most of them are consensus published by specific societies about the importance of the careful management of these patients but almost no information is provided over specific drugs and dosage to be used. Conclusion: The possibility to use sedation, in spite of its advantages, requires careful protocol in order to avoid com- plications. The literature provides plenty information for the safety of the sedation but lacks in offer drug protocol to be used in patients with special needs submitted to oral surgery. Conflict of interest: None declared. doi:10.1016/j.ijom.2011.07.422 160 Accelerated orthodontics by corticotomy L.K. Carrion Mauricio 1,* , H.D.F. Ghersi Miranda 1 , E. Morzan Valderrama 2 1 Oral and Maxilofacial Surgery, Aspecibum, Peru 2 Orthodontics, Dental Phi, Lima, Peru In search of methods and techniques to facilitate and shorten the orthodontic treat- ment time, getting equal or better results than traditional treatments. Wilcko et al. and Hajji have been working and pub- lishing their experiences in corticotomies. This technique is based on combining orthodontics and oral surgery. The “injury” caused by the selective decortication or corticotomy of alveolar bone, triggers and stimulates a variety of regional and temporal physiological processes at the bone (osteopenia), which facilitates tooth movement and reducing treatment time, avoid injury in the pulp, root reabsorption, improved dental stability post-treatment and even allows to increase the volume when placed alveolar bone grafting, this technique is an option in the treatment of border line dentofacial deformities cases, sometimes avoid orthognathic surgery. We present our experience of five years in the management of malocclusion with accelerated orthodontics by corticotomy, which showed good functional and aes- thetic results. Conclusions: Research and clinical experience show that the accelerated orthodontics by corticotomy facilitates the achievement of the objectives of the planned treatment, in reducing signifi- cantly reduce treatment time, in addition to biological costs and achieve better stability after treatment. Conflict of interest: None declared. doi:10.1016/j.ijom.2011.07.423 161 Scientific basis and updates on accelerated orthodontics by corticotomy L.K. Carrion Mauricio * , H.D.F. Ghersi Miranda Oral and Maxilofacial Surgery, ASPECIBUM, Lima, Peru In order to reduce time in orthodontic treatments, have been applied knowledge about bone physiology based on clinical experience and observation by H. Frost. The injuries in bone (fractures, osteotomies or corticotomies), cause a change in metabolism. This is called regional accelerating phenomenon (RAP), where osteoclasts and osteoblasts are increased in the injured area as well as mediators and cell precursors of blood and lymph vessels. This RAP, positively promotes the speed of orthodontic movement caused by the transient osteopenia, which is main- tained by permanent orthodontic forces (Wilcko et al.). Corticotomy also favors reducing root resorption during orthodontic treatments, based on the application of less force on the surface of the tooth structure and less damage to the pulp and improvement of stability after treatment. The aim of this review is about the his- tory, principles, indications, technique and the role of corticotomy in orthodontic treat- ment. The method used was based on the search of information from articles pub- lished in various databases such as Pubmed, EBSCO, Hinari, Scielo. Results and conclusions: Studies show that corticotomies help to reduce the time of orthodontic treatment and also produces fewer side effects. Conflict of interest: None declared. doi:10.1016/j.ijom.2011.07.424 162 Prosthetic rehabilitation of the patient after extensive maxilloectomy supported by dental implants in zygoma bone: clinical report C.R. Rahimov 1,* , I.M. Farzaliyev 1 , E.A. Hasanov 2 1 Department of Oral and Maxillofacial Surgery, Azerbaijan Medical University, Azerbaijan 2 Department of Stomatology, Hospital of Ministry of Internal Affairs, Baku, Azerbaijan Introduction: Prosthetic rehabilitation of the patients, after maxilloectomy resec- tion is challenging because of complexity of defects. Only few such clinical cases were found in literature. This study dedi- cate to prosthetic rehabilitation with dental implants in zygoma of the patient who underwent total maxilla and nasoetmoid resection. Case report: Patient A.S. 38 year old female, with tumor in hard palate. Anamnesis reveled “Tumor and recur- rence resection” due to certain pathology in 2000–2010. Currently tumor with hard consistency and stuck overlying mucosa