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Search Results: 1 - 10 of 69273 matches for " Belmiro Cavalcanti do Egito;Silva Neto "
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Estudo clínico e histopatológico da rea??o tecidual às suturas interna e externa dos fios monofilamentares de nylon e poliglecaprone 25 em ratos
Ribeiro, Camila Maria Beder;Silva Júnior, Valdemiro Amaro da;Silva Neto, Joaquim Celestino da;Vasconcelos, Belmiro Cavalcanti do Egito;
Acta Cirurgica Brasileira , 2005, DOI: 10.1590/S0102-86502005000400005
Abstract: purpose: the aim of this experimental study was to evaluate through a clinical and histopatological analysis the tissue reactivity caused by two monofilament sutures nylon and poliglecaprone 25 on the internal and external sutures in rats. methods: for this study, we used forty male rattus novergicus (wistar rats). the experimental procedures were incisions and divulsions performed on the back of the animals' thighs. internal and external sutures were done on the right thigh using nylon 0-5, and on the left thigh using poliglecaprone 25 0-5. the animals were distributed in 4 groups of 10 rats, according postoperatory period on the 7, 14, 21 and 28 days, g1 (7th day), g2 (14th day), g3 (21th day) and g4 (28th day). the clinical assentment aimed to verify the existence of deiscence, exsudate and edema. the histopathologic analisy's was intended to eveluate the inflammatory reaction, foregin body giant cells, fibroblastic proliferation and fibrosis. results: clinically, no changes were found on groups studied. histopathological analysis inflammatory reaction, foregin body giant cells, fibroblastic proliferation and fibrosis were higher on the internal sutures with nylon. on the sutures done with poliglecaprone 25 showed an increase in tissue reactivity passing postoperatory period. conclusions: on the basis of the methodology used in the study, it was concluded that external sutures done with nylon produce less tissue reactivity; on internal sutures, however, this material contributes to the maintenance of the tissue reaction. the external sutures done with poliglecaprone 25 showed a greater tissue reaction; on the external sutures the tissue reaction decreased while the thread was being absorbed.
Estudo clínico e histopatológico da rea o tecidual às suturas interna e externa dos fios monofilamentares de nylon e poliglecaprone 25 em ratos
Ribeiro Camila Maria Beder,Silva Júnior Valdemiro Amaro da,Silva Neto Joaquim Celestino da,Vasconcelos Belmiro Cavalcanti do Egito
Acta Cirurgica Brasileira , 2005,
Abstract: OBJETIVOS: Neste estudo realizamos a análise clínica e histopatológica da rea o tecidual dos fios de nylon e poliglecaprone 25 monofilamentares nas suturas interna e externa em ratos. MéTODOS: Foram utilizados 40 Rattus norvegicus (Wistar) machos. O ato operatório consistiu de incis o e divuls o dos planos muscular e cutaneo realizadas na regi o posterior das coxas dos animais. As suturas internas e externas da coxa direita foram realizadas com o fio de nylon ndegrees5-0, e na coxa esquerda aplicamos o poliglecaprone 25 ndegrees5-0. Os animais foram divididos em 4 grupos (n=10) de acordo com o tempo pós-operatório G1 (7 dias), G2 (14 dias), G3 (21 dias) e G4 (28 dias). Para a avalia o cínica foi considerada a ocorrência de deiscência, de exsudato e edema. Na análise histopatológica objetivou-se avaliar rea o inflamatória, células gigantes de corpo estranho, prolifera o fibroblástica e fibrose. RESULTADOS: Clinicamente, n o foram observadas altera es nos grupos estudados. Histopatologicamente a rea o inflamatória, presen a de células gigantes de corpo estranho, prolifera o fibroblástica e fibrose foram maiores nas suturas internas realizadas com Nylon. Nas suturas realizadas com poliglecaprone 25 essa rea o declinou com o passar do tempo pós-operatório. CONCLUS O: De acordo com a metodologia empregada podemos concluir que as suturas externas realizadas com nylon induziram menor rea o tecidual, enquanto que nas suturas internas este fio contribuiu para perpetuar a rea o tecidual. As suturas externas realizadas com poliglecaprone 25 apresentaram maior rea o tecidual, e suturas internas realizadas com o mesmo fio a rea o tecidual declinou na medida em que o fio estava sendo absorvido.
Histopathological analysis of gangliosides use in peripheral nerve regeneration after axonotmesis in rats
Ribeiro, Camila Maria Beder;Vasconcelos, Belmiro Cavalcanti do Egito;Silva Neto, Joaquim Celestino da;Silva Júnior, Valdemiro Amaro da;Figueiredo, Nancy Gurgel;
Acta Cirurgica Brasileira , 2008, DOI: 10.1590/S0102-86502008000400011
Abstract: purpose: to analyze the action of gangliosides in peripheral nerve regeneration in the sciatic nerve of the rat. methods: the sample was composed of 96 male wistar rats. the animals were anaesthetized and, after identification of the anaesthesic plane, an incision was made in the posterior region of the thigh, followed by skin and muscle divulsion. the right sciatic nerve was isolated and compressed for 2 minutes. continuous suture of the skin was performed. the animals were randomly divided into two groups: the experimental group (eg), which received subcutaneous injection of gangliosides, and the control group (cg), which received saline solution (0.9%) to mimic the effects of drug administration. results: no differences were observed between the experimental and control groups evaluated on the eighth day of observation. at 15 and 30 days the eg showed an decrease in schwann cell activity and an apparent improvement in fibre organization; at 60 days, there was a slight presence of schwann cells in the endoneural space and the fibres were organized, indicating nerve regeneration. at 15 and 30 days, the level of cell reaction in the cg had diminished, but there were many cells with cytoplasm in activity and in mitosis; at 60 days, hyperplastic schwann cells and mitotic activity were again observed, as well as nerve regeneration, but to a lesser extent than in the eg. conclusion: the administration of exogenous gangliosides seems to improve nerve regeneration.
Comparison between human and rat TMJ: anatomic and histopathologic features
Porto, Gabriela Granja;Vasconcelos, Belmiro Cavalcanti do Egito;Andrade, Emanuel Sávio de Souza;Silva-Junior, Valdemiro Amaro;
Acta Cirurgica Brasileira , 2010, DOI: 10.1590/S0102-86502010000300012
Abstract: purpose: to describe and evaluate normal rat temporomandibular joints from anatomic and histopathologic point of view and make a comparison between this joint in rats and humans. methods: twelve male adult wistar rats (12 same side joints) were used in this procedure. the following anatomical structures were histologically evaluated in a qualitative fashion: condyle, disc, temporal bone, retrodiscal tissue and synovia. the macroscopical and microscopic study of the human tmj was based on the current literature. results: the tmj is surrounded by a thin capsule, consisting of fibrous tissue, and a synovial lining. the mandibular angle has a prominent shape. the glenoid fossa is flat, with no eminences. histologically, the tmj is composed of different tissues that comprise the mandibular head, mandibular fossa and fibrocartilaginous disc. a layer of hyaline cartilage covers the articulating cortical condyle and temporal bone. conclusion:morphologically and histologically, the articular structure of rats is, on the whole, similar to that of humans. in these animals there is no articular eminence.
Glove perforation during oral surgical procedures
Lopes de Freitas Xavier,Ruth; Cavalcanti do Egito Vasconcelos,Belmiro; Ferreira da Silva,Luiz Carlos; Granja Porto,Gabriela;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2006,
Abstract: objective: the aim of this study was to determine the incidence of glove perforation among undergraduates and residents performing maxillofacial surgery and identify procedures associated with the perforations. study design: for this purpose, 200 pairs of surgical gloves were used. for inspecting the perforations, the gloves were filled with water, at least 500 ml. results: sixteen gloves (8%) were perforated, 8 (4%) by residents and 8 (4%) by undergraduate students. only the residents noticed that 2 gloves (1%) were perforated and identified the object causing the perforation. the left hand was the more affected with 9 perforations (4.5%). the finger pulp was the region most affected with 12 perforations (6%). the perforated forefinger appeared in 8 gloves (4%), representing the highest incidence of perforations. conclusion: we concluded there was no difference in surgical glove perforation between undergraduate students and residents, the incidence of perforations was greater in the left hand (nondominant hand) and the fingers in which most perforations occurred were the forefinger and the thumb.
Reposi??o cirúrgico-ortopédica de implante mal posicionado: relato de caso
Silva, Luiz Carlos Ferreira da;Vasconcelos, Belmiro Cavalcanti do Egito;Vasconcellos, Ricardo José de Holanda;Anjos, Edvaldo Dorea dos;
Revista Dental Press de Ortodontia e Ortopedia Facial , 2005, DOI: 10.1590/S1415-54192005000300012
Abstract: oral rehabilitation through dental implants has become a common procedure at dental practice. however, if the implant is placed in an inappropriate position either because of inadequate presurgical planning or poor surgical technique, it may be unrestorable in spite of osseointegrated. many authors have reported the possibility of using segmental maxillary or mandibular osteotomies to reposition an alveolar segment with its implants. this can be an effective, predictable technique for restoring implants in a compromised anatomic position. this paper presents a case report describing the use of this procedure associated to distraction osteogeneis to reposition one malpositioned implant in a 20 years old girl.
Acesso transmaxilar à base do cranio: avalia??o de 11 casos
Caubi, Antonio Figueiredo;Lago, Carlos Augusto Pereira;Vasconcelos, Belmiro Cavalcanti do Egito;Silva, Emanuel Dias e Oliveira;Rocha, Nelson Studart;Morais, Hécio Henrique Araújo de;
Revista Brasileira de Otorrinolaringologia , 2008, DOI: 10.1590/S0034-72992008000500003
Abstract: surgical access to the skull base is always difficult, especially because of the noble anatomic structures present there. maxillary osteotomy provides direct view to the clivus region and the neck spine, and it also bears less morbidity when compared to the many other accesses described in the literature. aim: to assess 11 patients submitted to transmaxillary osteotomy, describing the surgical technique and postoperative results and complications. materials and methods: a retrospective study involving eleven patients submitted to transmaxillary approach to the brainstem. we studied dental occlusion, trans and postoperative bleeding, bone necrosis and soft tissue alterations. all followed the same surgical protocol and were followed up for two years. results: after treatment, all the patients improved in their clinical status and had no neurological complication, trans and postoperative hemorrhage or major complications were seen. among the complications, two patients had incomplete maxilla fracture, two had laceration of their nasal mucosa and one had, as late complication, an oral-sinusal fistula. conclusion: transmaxillary osteotomy provided proper access to the clivus for brainstem decompression with low rate of complications in this series.
Análise das varia es morfológicas da ATM em pacientes com artrite reumatóide através de tomografia computadorizada
Vasconcelos, Belmiro Cavalcanti do Egito et al.
Revista Odonto Ciência , 2005,
Abstract: Realizou-se um estudo qualitativo e quantitativo enfocando as altera es morfométricas da articula o temporomandibular (ATM), em pacientes com o diagnóstico de artrite reumatóide (AR) por meio de tomografia computadorizada. Foram analisados 6 casos onde s o descritas as altera es estruturais dos componentes ósseos de 12 ATMs. Os resultados indicaram que todas as ATMs apresentaram altera es, sendo as altera es mais freqüentes a esclerose óssea subcondral, seguida do aplainamento da eminência articular. Todos os pacientes apresentaram distúrbio de mobilidade.
Facial nerve injury following surgery for the treatment of ankylosis of the temporomandibular joint
Bessa Nogueira,Ricardo Viana; Vasconcelos,Belmiro Cavalcanti do Egito;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2007,
Abstract: objective: the purpose of the present paper was to carry out a longitudinal study of a series of cases in which injury of the facial nerve was observed following surgery for the treatment of temporomandibular ankylosis. study design: the sample was composed of 13 patients, both male and female, in whom 18 surgical approaches were made. a postoperative assessment of the motor function of the facial nerve was made in accordance with the house-brackmann grading system. all the patients were photographed and assessed at the following postoperative times: 24 hours, one week, one month and three months. results: the results showed that injury of the facial nerve occurred in 31% of the cases. an increase in the frequency of nerve injury was observed in the cases in which the interpositional arthroplasty technique was employed, as well as the fact that 75% of the patients had undergone at least one surgical intervention prior to the study. after three months all the patients displayed normal function of the facial nerve. conclusion: the frequency of facial nerve injury is related to the degree of difficulty involved in the surgery determined by the type of ankylosis. the nerve lesions were shown to be of a temporary nature.
Tratamiento de la anquilosis de la articulación temporomandibular por artroplastia simple
Cavalcanti do Egito Vasconcelos,Belmiro; Viana Bessa-Nogueira,Ricardo; Vago Cypriano,Rafael;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2006,
Abstract: purpose: the purpose of this paper is to show that gap arthroplasty improve mouth opening when treating tmj ankylosis. patients and methods: eight patients with tmj ankylosis were treated by gap arthroplasty. the patients were evaluated by at least twenty-four months (minimum 24 and maximum 48 months). results: of the eight patients (eleven joints), five (62.5%) had unilateral involvement and three patients (37.5%) had bilateral involvement. the mean age was 20 years ± 9 (range 3 to 30 years). the mean maximal incisal opening (mio) in the preoperative period was 9.25 ± 6.41 mm and in the postoperative period it was 29.88± 4.16 mm. the complication of temporary facial nerve paresis was encountered in two patients (25%). no recurrence was observed in our series. conclusions: trauma was the major cause of tempomandibular joint ankylosis in our sample. gap arthroplasty showed good results when treating tmj ankylosis.
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