Coronectomia: percepção dos buco-maxilo-faciais em hospitais do Recife-PE / Coronectomy: perception of bucco-maxillofacials in hospitals in Recife-PE

Introdução: A Coronectomia é um tratamento alternativo à remoção total do terceiro molar inferior impactado/incluso, removendo apenas a região coronária do dente, preservando suas raízes. O objetivo desta pesquisa é mensurar o nível de conhecimento e percepção dos Cirurgiões e Residentes Buco-Maxilo-Faciais, em três hospitais da rede pública da cidade do Recife, Pernambuco, sobre a técnica da Coronectomia. Metodologia: A amostra foi composta por 40 profissionais, dentre os quais 50% de todos os entrevistados declararam não realizar a técnica da Coronectomia na remoção de terceiros molares. Foi realizado o Teste Exato de Fisher que não apontou dependência entre as categorias de participante da entrevista quanto ao grau de conhecimento sobre a técnica de Coronectomia. Resultados: Os entrevistados conhecem a técnica de Coronectomia, mas a sua indicação não é frequente e as contraindicações mais citadas foram lesões neoplásicas e terceiros molares com patologia apical. Consideram muito importantes e importantes as vantagens do procedimento em relação à remoção total dos terceiros molares. 70% dos entrevistados veem a necessidade de reintervenção como a maior desvantagem na técnica, porém, estudos dizem que raramente ocorrem erupções dessas raízes. Conclusão: A técnica da Coronectomia é eficaz quando corretamente indicada e realizada, pois, reduz o risco de uma lesão ao nervo alveolar inferior... (AU)

Introduction: Coronectomy is an alternative treatment to the total removal of the impacted / included lower third molar, removing only the coronary region of the tooth, preserving its roots. The objective of this research is to measure the level of knowledge and perception of Surgeons and Buco-Maxillofacial Residents, in three public hospitals in the city of Recife, Pernambuco, on the technique of Coronectomy. Methodology: The sample consisted of 40 professionals, among whom 50% of all respondents stated that they did not perform the Coronectomy technique in the removal of third molars. Fisher's Exact Test was performed, which did not show any dependence between the interviewee categories regarding the degree of knowledge about the Coronectomy technique. Results: The interviewees are familiar with the Coronectomy technique, but its indication is not frequent and the most frequently mentioned contraindications were neoplastic lesions and third molars with apical pathology. The advantages of the procedure in relation to the total removal of third molars are considered very important and important. 70% of respondents see the need for reintervention as the biggest disadvantage in the technique; however, studies say that eruptions of these roots rarely occur. Conclusion: The Coronectomy technique is effective when correctly indicated and performed, as it reduces the risk of injury to the lower alveolar nerve... (AU)

Palatal obturator designed by 3-dimensional prototyping for a patient with a large ameloblastoma: a case report.

The aim of the present report was to detail the advantages of using 3-dimensional (3D) prototyping in the planning, modeling, and manufacturing of an immediate palatal obturator for a 62-year-old man who underwent a left total maxillectomy to remove a solid, multicystic ameloblastoma. The prosthesis provided favorable restoration of stomatognathic functions, including speech, swallowing, and mastication. The use of an immediate obturator prosthesis made with 3D technology is an important aid in the treatment of patients diagnosed with tumors in the head and neck region.

Conservative treatment of an aggressive odontogenic tumor: a case report.

An ameloblastoma is a polymorphic, benign, locally invasive tumor made up of odontogenic epithelium, clinically characterized by slow, progressive, painless growth. There are reports in the literature on the treatment of ameloblastomas with aggressive mural invasion through resections, in order to minimize recurrence. However, different approaches may be used at the bone level, such as curettage combined with a chemical fixative (Carnoy's solution), cryotherapy, or thermal cauterization. The findings of this case report demonstrate that the use of Carnoy's solution following the enucleation of a unicysticameloblastoma with mural invasion may be a treatment alternative with a low rate of recurrence, as well as a reduced rate of postoperative complications, a reduction in costs, and preservation of both esthetics and function.

Atividade antimicrobiana do extrato de Momordica charantia L. / Antimicrobial activity of the Mormodica charantia L. extract

A Momordica charantia L., conhecida popularmente como Melão de São Caetano, pertencente àfamília das Cucurbitaceae, é uma planta tropical, de crescimento rápido, comum em terrenos abandonados e que apresenta efeito medicinal, comprovado para o tratamento de várias afecções de origem microbiana...

The Momordica charantia L., a member of the Cucurbitaceae plant family, is a fast-growing tropicalplant, commonly found on abandoned land, which has proven medicinal effects for the treatment of variousdiseases of microbial origin...

Infrared laser light further improves bone healing when associated with bone morphogenic proteins: an in vivo study in a rodent model.

OBJECTIVE: This study assessed histologically the effect of laser photobiomodulation (LPBM) on the repair of surgical defects created in the femurs of Wistar rats treated or not treated with bone morphogenic proteins (BMPs) and organic bovine bone graft. BACKGROUND DATA: This paper is part of an ongoing series of works in which biomaterials are used in association with LPBM. Several previous reports by our group have shown that the use of laser photobiomodulation improves the treatment of bone defects. MATERIALS AND METHODS: Forty-eight adult male Wistar rats were divided into four randomized groups: group I (control, n = 12); group II (LPBM, n = 12); group III (BMPs + organic bovine bone graft, n = 12); and group IV (BMPs + organic bovine bone graft + LPBM, n = 12). The irradiated groups received seven irradiations every 48 h, beginning immediately after the surgical procedure. The laser therapy (lambda = 830 nm, 40 mW CW, varphi = 0.6 mm) consisted of 16 J/cm(2) per session divided equally over four points (4 J/cm(2) each) around the defect. The subjects were sacrificed after 15, 21, and 30 d, and the specimens were routinely embedded in wax, stained with hematoxylin and eosin and sirius red, and analyzed under light microscopy. RESULTS: The results showed histological evidence of increased deposition of collagen fibers (at 15 and 21 d), as well as an increased amount of well-organized bone trabeculae at the end of the experimental period (30 d) in the irradiated animals versus the non-irradiated controls. CONCLUSION: The use of LPBM with BMPs and organic bovine bone grafts increases the positive biomodulating effects of laser light.

Assessment of bone repair associated with the use of organic bovine bone and membrane irradiated at 830 nm.

OBJECTIVE: The aim of the present investigation was to assess histologically the effect of LLLT (GaAIAs, 830 nm, 40 mW, CW, (Phi) approximately 0.6 mm, 16 J/cm(2) per session) on the repair of surgical defects created in the femur of the Wistar Albinus rat. The defects were filled to lyophilized bovine bone (Gen-ox), organic matrix) associated or not to GTR (Gen-derm). BACKGROUND DATA: A major problem on modern Dentistry is the recovery of bone defects caused by trauma, surgical procedures or pathologies. Several types of biomaterials have been used in order to improve the repair of these defects. These materials are often associated to procedures of GTR. Previous studies have shown positive effects of LLLT on the repair of soft tissue wounds, but there are a few on its effects on bone healing. METHODS: Surgical bone defects were created in 42 animals divided into five groups: Group I (control, 6 animals); Group II (Gen-ox, 9 animals); Group III (Gen-ox + Laser, 9 animals); Group IV (Gen-ox + Gen-derm, 9 animals); Group V (Gen-ox + Gen-derm + Laser, 9 animals). The animals on the irradiated group received 16 J/cm(2) per session divided into four points around the defect (4 J/cm(2)) being the first irradiation immediately after surgery and repeated seven times at every 48 h. The animals were humanly killed after 15, 21, and 30 days. RESULTS: The results of the present investigation showed histological evidence of improved amount of collagen fibers at early stages of the bone healing (15 days) and increased amount of well organized bone trabeculae at the end of the experimental period (30 days) on irradiated animals compared to non irradiated ones. CONCLUSIONS: It is concluded that a positive biomodulative effect on the healing process of one defect associated or not to the use of organic lyophilized bone and biological bovine lyophilized membrane on the femur of the rat.

Effect of 830-nm laser light on the repair of bone defects grafted with inorganic bovine bone and decalcified cortical osseus membrane.

OBJECTIVE: The aim of this study was to histologically assess the effect of low-level laser therapy (LLLT) (lambda830 nm) on the repair of standardized bone defects of the femur of Wistar albinus rats grafted with inorganic bovine bone and associated (or not) with decalcified bovine cortical bone membrane. BACKGROUND DATA: Bone loss may be a result of pathology, trauma, or surgical procedure. Extensive studies on the process of bone repair have been undertaken, and several techniques for the correction of bone defects have been proposed. Amongst them is the use of several types of grafts, the use of membranes, and the combination of both techniques. There is evidence in the literature of the positive effect of LLLT on the healing of soft tissue wounds. However, its effect on bone healing is not completely understood. MATERIALS AND METHODS: Five randomized groups were studied: group I (control); group IIA (Gen-ox); group IIB (Gen-ox + LLLT); group IIIA (Gen-ox + Gen-derm); and group IIIB (Gen-ox + Gen-derm + LLLT). Bone defects were created at the femur and were treated according to the group. The animals of irradiated groups were irradiated every 48 h for 15 days; the first irradiation was performed immediately after the procedure. The animals were irradiated transcutaneuosly at four points around the defect. At each point, a dose of 4 J/cm2 was given (phi approximately equal to 0.6 mm, 40 mW), and the total dose per session was 16 J/cm2. The animals were humanely killed at 15, 21, and 30 days after surgery. The specimens were routinely processed to wax, serially cut, stained with H&E and Picrosirius stains, and analyzed under light microscopy. RESULTS: The results showed more advanced repair of the irradiated groups when compared to the non-irradiated ones. The repair of the irradiated group was characterized by both increased bone formation and on the amount of collagen fibers around the graft within the cavity, as early as the 15th day after surgery, considering the osteoconductive capacity of the Gen-ox and the increment of the cortical repair in specimens with Gen-derm membrane. CONCLUSION: It is concluded that LLLT had a positive effect on the repair of bone defect by graft associated or not with the use of biological membrane.

Effect of low level laser therapy on the repair of bone defects grafted with inorganic bovine bone.

The aim of this study was to assess histologically the effect of LLLT (lambda 830 nm) on the repair of standardized bone defects on the femur of Wistar albinus rats which were grafted with inorganic bovine bone Gen-ox(R). Three randomized groups were studied: group I (control, n=6); group II (Gen-ox, n=9) and group III (Gen-ox + LLLT, n=9). The animals were irradiated every 48 h during 15 days; the first irradiation was performed immediately after the procedure. The animals were irradiated transcutaneuosly at four points around the defect. At each point a dose of 4 J/cm(2) was given (Ø approximately 0.6 mm, 40 mW) and the total dose per session was 16 J/cm(2). The animals were killed by an overdose of general anesthetic 15, 21 and 30 days after surgery. The specimens were routinely processed by embedding in paraffin, serially cut and stained with H&E and Picrosirius and analyzed under light microscopy. The results showed evidence of a more advanced repair in the irradiated group when compared to the non-irradiated groups. The repair of the irradiated group was characterized by both increased bone formation and amount of collagen fibers around the graft within the cavity from the 15th day after surgery, also considering the osteoconductive capacity of the Gen-ox. We conclude that LLLT had a positive effect on the repair of bone defects implanted with inorganic bovine bone.

Effect of low level laser therapy on the repair of bone defects grafted with inorganic bovine bone

O objetivo deste trabalho foi avaliar histologicamente a influência da radiação laser não-cirúrgica (830 nm) sobre o reparo ósseo de defeitos padronizados em fêmur de ratos Wistar albinus e submetidos a implante de osso bovino inorgânico Gen-ox. Foram estabelecidos três grupos de animais: grupo I (controle, n=06); grupo II (Gen-ox, n=09) e grupo III (Gen-ox + LLLT, n=09). Os animais foram irradiados a cada 48 horas, sendo a primeira irradiação realizada imediatamente após a cirurgia. Os animais foram irradiados transcutaneamente em quatro pontos em torno da ferida. Cada ponto recebeu uma dose de 4 J/cm2 e a dose total por sessão foi de 16 J/cm2. Os sacrifícios foram realizados 15, 21 e 30 dias após a cirurgia. Os espécimes foram removidos e fixados para procedimento laboratorial, sendo corados com HeE e Picrosirius e analisados em microscopia de luz. Os resultados mostraram evidência de um reparo ósseo mais avançado nos espécimes irradiados em relação aos não irradiados. O reparo nos espécimes irradiados foi caracterizado por uma maior neoformação óssea, bem como por uma maior proliferação de fibras colágenas no interior do defeito já a partir de 15 dias após a cirurgia, também considerando a capacidade osteocondutiva do Gen-ox. Conclui-se que a LLLT resultou num efeito de biomodulação positiva sobre o reparo do defeito ósseo submetido a implante de osso bovino inorgânico.