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1.
J. Health Sci. Inst ; 37(4): 377-380, Oct-Dec 2019. ilus
Article in Portuguese | LILACS | ID: biblio-1359828

ABSTRACT

Rinolitíase é uma formação calcárea rara situada no interior das fossas nasais. Geralmente apresenta-se acompanhada de rinorréia purulenta e obstrução nasal. Porém, outros sintomas como epistaxe recorrente e cacosmia podem estar presentes. O diagnóstico é realizado por meio de exames nasais endoscópicos e tomografia computadorizada (TC) associados à alta suspeita clínica. O tratamento consiste na sua remoção e antibioticoterapia. Neste artigo os autores descrevem o caso de um rinolito de grandes dimensões, assintomático, em indivíduo do gênero masculino, 17 anos, descoberto em exame de tomografia de feixe cônico realizada após observação de uma radiografia panorâmica.


Rhinolithiasis is a rare calcareous formation located within the nasal fossae. It is usually accompanied by purulent rhinorrhea and nasal obstruction. However, other symptoms such as recurrent epistaxis and cacosmia may be present. The diagnosis is made through endoscopic nasal exams and computed tomography (CT) associated with high clinical suspicion. The treatment consists of its removal and antibiotic therapy. In this paper, the authors describe the case of a large, asymptomatic, rhinolith in a 17-year-old male, discovered on a conical beam tomography scan performed after a routine panoramic radiograph


Subject(s)
Humans , Male , Adolescent , Radiography, Panoramic , Cone-Beam Computed Tomography , Otolaryngology , Rhinorrhea , Nasal Cavity
2.
Araçatuba; s.n; 2016. 166 p. tab, ilus, graf.
Thesis in Portuguese | LILACS, BBO | ID: biblio-881622

ABSTRACT

A deficiência óssea vertical do seio maxilar impossibilita a instalação de implantes dentais necessários para a reabilitação protética contudo, técnicas cirúrgicas para a elevação da membrana sinusal e o uso dos biomateriais para enxertia óssea permitiram alterar esta condição. O ósseo autógeno é considerado o mais previsível e o padrão ouro para tal finalidade porém, biomateriais como o vidro bioativo, amplamente utilizado na odontologia, permitem substituí-lo. O objetivo deste estudo foi avaliar formação óssea, o comportamento celular e a taxa de reabsorção do vidro bioativo em 2 proporções: puro (grupo 1); adicionado ao osso autógeno 1:1 (grupo 2), comparando com o osso autógeno (grupo 3) em seios maxilares de humanos. Com 15 dias de operados os pacientes realizaram um tomografia computadorizada (TC) cone beam para determinar o volume inicial do enxerto (T1). Após 6 meses uma nova TC foi realizada determinando o volume ósseo final (T2) e também, a coleta das biópsias com a instalação simultânea de implantes dentais. As amostras foram divididas em 3 áreas: leito, intermediária e apical onde foram avaliadas a histomorfometria e imunomarcações para Runx2, VEGF, osteocalcina e TRAP. No grupo 1 os resultados foram de 42.6%, 44.5% e 48% de formação óssea no leito, intermediária e apical respectivamente. No grupo 2 as taxas encontradas foram de 36.6% no leito, 33.2% na intermediária e 45.8% na apical. No grupo 3 foi de 34.4% para o leito, 35.0 na intermediária e 42.0% na apical. (p>0.05) Os 3 grupos apresentaram-se com comportamento semelhante nas imunomarcações realizadas mostrando estar maturado e calcificado o suficiente para receber implantes dentais. As taxas de reabsorção também mostraram-se semelhantes com 44.2% para o grupo 1, 37.9% para o grupo 2 e 45.7% no grupo 3. (p>0.05) Assim, podemos concluir que o vidro bioativo possui resultados equiparados ao osso autógeno(AU)


Vertical bone deficit due maxillary sinus pneumatization forbid the dental implants placement required for prosthetic rehabilitation however, surgical techniques to elevate maxillary sinus membrane and studies about biomaterials, allows repair these situation. Autogenous bone graft is considered the most predictable and the gold standard for this nevertheless, biomaterials as bioactive glass, has been widely used in dental surgery and allows substitute it. The aim of this study was evaluate the bone formation, the cellular behavior and the resorption rates of bioactive glass in 2 proportions: pure (group 1); add to autogenous bone graft (group 3), comparing then with autogenous bone graft in human maxillary sinus. Post-operative cone beam computed tomography (CT) was used to measure the initial graft volume after 15 days (T1). Six months later, another CT was performed to evaluate the final graft volume (T2) and determine the graft resorption rate and the harvest of biopsies with dental implants placement simultaneously. The samples were divided in 3 areas: bed, intermediately and apical which were evaluated to histomorphometric and immunostaining to Runx2, VEGF, osteocalcin and TRAP. In group 1 the bone formation were 42.6%, 44.5 and 48.0% for bed, intermediately and apical respectively. In group 2 the rates were 36.6% in bed, 33.2% in intermediately and 45.8% in apical. In group 3 were 34.4% in bed, 35.0% in intermediately and 42.0% in apical. (p>0.05) the 3 groups had the same behavior for the 4 proteins showing be matured and calcified to receive dental implants. The resorption rates were similar for the 3 groups with 44.2% % for group 1, 37.9% for group 2 and 45.7% for group 3. (p>0.05) In conclusion, the bioactive glass is a good substitute to autogenous bone graft in both proportions evaluated(AU)


Subject(s)
Biocompatible Materials , Bone Substitutes , Maxillary Sinus , Dental Implants , Spiral Cone-Beam Computed Tomography
3.
RSBO (Impr.) ; 12(1): 94-97, Jan.-Mar. 2015. ilus
Article in English | LILACS | ID: lil-782790

ABSTRACT

Introduction and Objective:To report a rare case of a patient who presented two mesiodens and the treatment performed at two moments. Case report: A 7 year-old male patient reported a supernumerary tooth extracted at age 4. The dental clinical exam revealed giroversion of permanent maxillary right central incisor. Cone-beam computed tomography (CBTC) revealed a presence of a mesiodens located at the buccal surface mesially to the permanent maxillary left central incisor and also indicated that the mesiodens was located close to the f loor of the nasal cavity. The surgery was performed with a conservative intervention and osteotomy by preserving the adjacent structure. The one-year following-up postoperative x-ray indicated new bone deposition and a more favorable eruption position of the right permanent maxillary lateral incisor. Conclusion: It can be concluded that an early diagnosis by CBTC allowed an adequate treatment planning, which avoid the formation of cysts and a prolonged retention of permanent tooth.

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