RESUMO
We developed an orthodontic appliance completely made of organic polymer. The appliance was used for many years and proved very effective. It was used for the treatment of patients with metal allergy, and as a result, it is believed to be the best choice for treating metal allergies. In this report, we are presenting a surgical case with Class III malocclusion for a patient with metal allergy, and the concept of the appliance is briefly discussed.
Assuntos
Má Oclusão Classe III de Angle/terapia , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos , Polímeros , Adolescente , Ligas Dentárias/efeitos adversos , Dermatite de Contato/prevenção & controle , Feminino , Humanos , Técnicas de Fixação da Arcada Osseodentária/instrumentação , Má Oclusão Classe III de Angle/cirurgia , Contenções Ortodônticas , Osteotomia , Técnica de Expansão Palatina/instrumentação , Polímeros/química , Técnicas de Movimentação Dentária/instrumentaçãoAssuntos
Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos , Polímeros , Adulto , Carbonatos , Estética Dentária , Feminino , Humanos , Má Oclusão/terapia , MaleabilidadeRESUMO
Mandibular osteomyelitis often is associated with involvement of the masticator space. Assessment of mandibular osteomyelitis should therefore involve assessment of soft tissue involvement of the lesion. The purpose of this study was to clarify the relationship between computed tomography patterns and the presence of inflammation in soft tissues. Thirty-three cases diagnosed with osteomyelitis of the mandible were analyzed radiologically with conventional radiographs and with computed tomography scans. Computed tomography patterns of osteomyelitis were classified into four types, lytic, mixed, sclerotic, and sequestrum patterns. Location, extent of the lesion, and change of the cortical plate were evaluated and compared with conventional radiographic findings. Mixed pattern cases displayed diffuse bone abnormalities, which sometimes were accompanied by cortical plate disruption and periosteal reaction. In addition, most mixed pattern cases showed soft tissue involvement, especially of the masseter muscle. Inflammation of the masseter muscle was found to be related to periosteal reaction and disruption of the buccal cortical plate. The data demonstrate a close interaction between cortical plate disruption and muscle inflammation. The extent of inflammation including soft tissue involvement was better appreciated with computed tomography in osteomyelitis, especially in mixed pattern cases.
Assuntos
Doenças Mandibulares/diagnóstico por imagem , Osteomielite/diagnóstico por imagem , Periostite/diagnóstico por imagem , Adolescente , Adulto , Idoso , Análise de Variância , Fasciite/diagnóstico por imagem , Feminino , Humanos , Masculino , Músculos da Mastigação/diagnóstico por imagem , Pessoa de Meia-Idade , Miosite/diagnóstico por imagem , Parotidite/diagnóstico por imagem , Estomatite/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Filme para Raios XRESUMO
A case of oral cancer that had derived from a 19-year skin graft on the left buccal mucosa is reported. The patient had had three previous operations due to squamous cell carcinoma, erosion, and squamous cell carcinoma of the left buccal mucosa, respectively. In the last two operations, skin was transplanted, and the present cancer is believed to have derived from the latter one. The tumor was resected, and a new skin was grafted. In situ hybridization of human papilloma virus (HPV) was carried out; the HPV 16 DNA could not be detected in the specimen. Eight months later, a cervical lymph node metastasis was detected; thus, a radical neck dissection was performed.
Assuntos
Carcinoma de Células Escamosas/patologia , Mucosa Bucal/patologia , Neoplasias Bucais/patologia , Transplante de Pele/patologia , Idoso , Carcinoma in Situ/patologia , Carcinoma de Células Escamosas/cirurgia , Feminino , Seguimentos , Neoplasias Gengivais/cirurgia , Humanos , Metástase Linfática , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Pólipos/patologia , Pólipos/cirurgia , Transplante de Pele/efeitos adversos , Úlcera/patologiaRESUMO
Actinomycosis is an uncommon chronic disease usually caused by Actinomyces israelii. It affects the soft tissue mainly but sometimes spreads to involve salivary glands, bone, or even the skin of the face and neck. Five cases have been seen in our department. Several imaging modalities were used to assist in making the diagnosis. The cases are presented and the literature reviewed. Ultrasonography was found to be a useful diagnostic tool especially in developing the differential diagnosis.
Assuntos
Actinomicose/diagnóstico , Doenças das Glândulas Salivares/diagnóstico , Transtornos da Articulação Temporomandibular/diagnóstico , Idoso , Diagnóstico Diferencial , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Doenças Parotídeas/diagnóstico , Neoplasias das Glândulas Salivares/diagnóstico , Sialografia , Doenças da Glândula Submandibular/diagnóstico , Tomografia Computadorizada por Raios X , UltrassonografiaAssuntos
Lipoma/diagnóstico por imagem , Doenças Mandibulares/diagnóstico por imagem , Neoplasias Mandibulares/diagnóstico por imagem , Osteoporose/diagnóstico por imagem , Adulto , Doenças da Medula Óssea/diagnóstico por imagem , Diagnóstico Diferencial , Feminino , Humanos , Tomografia Computadorizada por Raios XRESUMO
The effect of periosteal elevation on the growth of the mandible was investigated in 142 3-week-old male rats. Surgery was performed at 3 weeks of age, and the animals were sacrificed at 6, 9, and 15 weeks of age. Measurements were carried out on dried halves of the mandibles. A bone defect was found at the 3rd week postoperatively but had filled in at the 6th week postoperatively. Histological and microangiographical studies were carried out up to the 6th week postoperatively. No significant differences were recorded in the size of the operated and unoperated halves of the mandibles. The growth pattern for the experimental group tended to be similar to that of the control group. It is therefore concluded that periosteal elevation alone does not induce growth impairment in the mandible of young rats.