Obtenção e caracterização de nanofibras eletrofiadas via solução de quitosana com e sem inclusão de hidroxiapatita

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Biomateriais aplicados à implantodontia

There are many ways in which materials and tissues can be brought into contact such that this co-existence may be compromised, and the search for biomaterials that are able to provide for the best performance in devices has been based upon the understanding of all interactions within biocompatibility phenomena. In this paper, the authors related the biomaterials properties applied in Implantology and their clinical indications.

Avaliação longitudinal de duas técnicas de sinus lift

The implant has high success rates and predictability in this decade. However, bone availability is a factor that may limit the installation technique of dental implants in subsequent rehabilitation of the maxillary arch has been proposed technique’s maxillary sinus lifting when it presents itself pneumatized, for installation of dental implants The aim of this paper is to present two clinical cases using the surgical technique and rehabilitation to the patient with surgery maxillary sinus lifting with the use of a biomaterial alone or in combination with autogenous bone and the prosthetic resolution radiographic and clinical follow-up of three years.

Regeneração óssea guiada em implantodontia: relato de caso

Objective: The use of methods for tissue regeneration has been widely applied in Implantology, in clinical situations with disabilities or anatomical limitations that prevent the placement of osseointegrated dental implants. The evolution of the development of biomaterials revolutionized this therapeutic modality, facilitating the resolution of clinical cases with tissue deficiencies. Thus, this study aimed to describe a clinical case approaching the methods, techniques, and materials used in guided bone regeneration applied to Implantology. Case report: A clinical case of a patient who received a Morse taper dental implant (region 15) is described. The use of biomaterial and membrane on the buccal wall of the socket was required. After the osseointegration period, a reopening surgery was performed, and an immediate provisional implant was produced. After 2 months of follow-up, the final prosthesis was made involving other adjacent elements. Final considerations: The guided bone regeneration technique employed showed satisfactory performance. The patient was positive regarding esthetics and function. However, more controlled studies with longer follow-up period are needed for analyses of predictability

Bone substitutes for peri-implant defects of postextraction implants

Placement of implants in fresh sockets is an alternative to try to reduce physiological resorption of alveolar ridge after tooth extraction. This surgery can be used to preserve the bone architecture and also accelerate the restorative procedure. However, the diastasis observed between bone and implant may influence osseointegration. So, autogenous bone graft and/or biomaterials have been used to fill this gap. Considering the importance of bone repair for treatment with implants placed immediately after tooth extraction, this study aimed to present a literature review about biomaterials surrounding immediate dental implants. The search included 56 articles published from 1969 to 2012. The results were based on data analysis and discussion. It was observed that implant fixation immediately after extraction is a reliable alternative to reduce the treatment length of prosthetic restoration. In general, the biomaterial should be used to increase bone/implant contact and enhance osseointegration.

Estudo retrospectivo de implantes osseointegrados instalados imediatamente após exodontias

Objectives: to evaluate implant survival immediately placed after tooth extraction considering different sites, prosthodontic modalities, and the need for biomaterials. Material and methods: dental records of 500 patients treated with dental implants between 2004 and 2011 were screened. Results: only 200 records (20%) corresponded to immediate implants. Reasons for tooth extraction included extensive caries, bone loss, and root fractures. From the 197 immediate dental implants, 86 were placed in the maxilla with a survival rate of 93.9% and 111 in the mandible (survival rate of 99.1%). The overall survival rate was 97.46%. Prosthodontic modalities identified were: Brånemark classic complete denture screwed prostheses (36%), overdentures (5.6%), fixed partial denture (31%), and single-tooth prostheses (27.4%). Also, it was observed that in 33% of cases there was a need for the use of grafts and/or biomaterials. Conclusion: it can be concluded that, when correctly indicated, immediate implants are an excellent choice. The anterior mandibular region, screwed and overdenture-type prostheses presented higher success rates when associated to immediate implant placement. The need for bone graft/biomaterial does not affect the clinical results.

Avaliação microscópica da propriedade biológica e da biocompatibilidade do osso composto e do osso integral de origem bovina

The aim of this study was to evaluate the biological properties and biocompatibility of bovine non-demineralized lyophilized and composite bones implanted in tibiae bone cavities and at the subcutaneous level. Twenty-four rats were used and sacrificed 15 and 45 days later. At the subcutaneous level, after 15 days an inflammatory reaction was seen around biomaterial particles with the presence of giant cells and at 45 days fibrous connective tissue had also developed. No signs of ectopic bone formation were observed at tibiae regions; more bone neoformation was observed at the control group (15 days) with 42.8% of the outer cortex layer against 22.6% at Orthogen and 25% at GenMix groups. At 45 days, correspondent values for bone neoformation were 62.5% at control, 26% at Orthogen, and 35% at GenMix groups, respectively. It can be concluded that both materials tested were biocompatible aiming to bone neoformation by their osteoconductive properties with no ectopic formation sites observed.

Estudo comparativo de imunomarcações (OC, VEGF, TRAP) em humanos, nas cirurgia de levantamento do assoalho de seio maxilar utilizando osso autógeno e heterógeno

Pós-graduação em Odontologia - FOA

Influência dos tratamentos térmicos na microestrutura e nos micromecanismos de fratura da liga ti-6al-4v produzida por sinterização direta de metal por laser (DMLS)

Pós-graduação em Engenharia Mecânica - FEIS

Estudo da incorporação e liberação de peptídeos hormonais utilizando membranas de látex natural como carreador

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Telas de polipropileno e de submucosa de intestino de suíno na reparação de falhas na parede abdominal de ratos (Rattus norvegicus Albinus)

Pós-graduação em Cirurgia Veterinária - FCAV

Biomassa do fungo filamentoso Lasiodiplodia theobromae: composição química e utilização como nutriente para bioprocesso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desenvolvimento e avaliação de um sistema de liberação sustentada de gentamicina em biomembranas de látex natural

Pós-graduação em Biociências - FCLAS

Avaliação in vivo do efeitos do osso bovino desproteinizado revestido com estrôncio sobre o reparo ósseo

Pós-graduação em Ciências Odontológicas - FOAR

Avaliação de propriedades físico-químicas e antimicrobianas sobre Enterococcus faecalis do mineral trióxido agregado associado a óleo de melaleuca ou farnesol

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)