ABSTRACT
As perdas ósseas nos arcos maxilares têm sido motivo de grande preocupação na Implantodontia por limitar a instalação de fixações. As técnicas de reconstrução óssea possibilitaram a ampliação das indicações para a instalação de implantes osseointegrados em locais anteriormente inacessíveis. O enxerto autógeno intrabucal é o procedimento mais utilizado na correção de defeitos de rebordo. Nas regiões onde a quantidade e o custo são fatores limitantes ao tratamento com os enxertos autógenos convencionais, surgem novas possibilidades como o uso dos aloenxertos. Protocolos de captação e estocagem realizados pelos bancos de ossos permitem uma maior segurança no uso dos aloenxertos. O objetivo deste estudo é relatar um caso clínico de reconstrução com aloenxerto em uma paciente que possuía um defeito ósseo decorrente de processo infeccioso dental em maxila. Desta forma, pode-se demonstrar que os enxertos ósseos alógenos podem ser utilizados nas reabilitações dos maxilares como alternativa aos enxertos autógenos.
The lack of bone tissue limits the insertion of osseointegrated fixtures and is motive of concern in Implant Dentistry. The techniques of bone reconstruction allowed the expansion of indications for the installation of anchorages in places previously impractical. The grafting autogenous intra-oral is the rnost commonly used in tissue reconstruction to rehabilitation with implants. In areas where the quantity and cost are limiting factors to treatment with conventional autografts, there are new possibilities as the use of allografts. The development of tissue banking improves the methods of processing and storage, increasing the quality and safety of banked bone. The aim of this study was to report a case of reconstruction with allograft in one patient who had abone defect caused by dental infection process in the jaw. Thus, one can demonstrate that the allograft may be used in the rehabilitation of the jaws as an alternative to autografts.
Subject(s)
Humans , Female , Middle Aged , Alveolar Bone Loss , Transplantation, Homologous , Dental Implantation, Endosseous , MaxillaABSTRACT
Com o advento da Implantodontia moderna, tem sido cada vez maior a utilização de enxertos buscando a reconstrução da reabsorção óssea advinda da perda do elemento dental. O objetivo deste estudo clínico é apresentar uma nova técnica de incorporação de enxerto de osso alógeno fresco congelado particulado em procedimentos de aumento vertical de rebordo posterior de mandíbula atrófica, através de uma cúpula rígida metálica que confere proteção e estabilidade ao material de enxerto.
Subject(s)
Humans , Female , Aged , Alveolar Ridge Augmentation , Bone Regeneration , Bone Transplantation/methodsABSTRACT
The use of autogenous bone grafts is considered to be the best choice for reconstructive surgery. In the periodontal literature, the utilization of osseous coagulum was suggested by the end of the sixties. The purpose of this study is to consider the use of bone collectors (bone traps) as an alternative method for obtaining material to fill small bone imperfections, such as fenestrations and dehiscences. Thirty samples were obtained from bone drilling during fixture installation in patients (13 men and 17 women, with an average age of 54 years) requiring treatment at the Department of Periodontology and Implant Dentistry, University of Santo Amaro. These samples were fixed in 10 percent neutral formaldehyde for 24 hours and subjected to histological preparation, in order to evaluate the presence of viable osteoblasts. In addition, the material was placed in a fluid thioglycolate medium and incubated for 24 hours at 36 ± 1°C in aerobiosis and anaerobiosis. Bacterial growth evaluation was made by using six different culture media (MacConkey agar, blood agar base, mannitol salt agar, Anaerokit LTD medium, Anaerokit LTD - bile medium, Anaerinsol). The results show that, if proper care is taken to prevent saliva contamination during the surgical procedure, this method of collecting autogenous bone may be useful in situations where small amounts of bone are required