Liliana Aparecida Pimenta De Barros

Conservative Treatment of Odontogenic Myxoma

Odontogenic myxomas (OMs) are nonencapsulated rare benign tumors that can occur in gnathic bones. They are locally invasive and have a high recurrence rate. Radiologically, OMs show a multilocular (in the majority of cases) or unilocular radiolucency, with either distinct or poorly defined margins. Histopathologically, OMs are characterized by spindle-, wedge-, or stellate-shaped cells loosely arranged in an abundant mucoid background. Myxomas are mainly asymptomatic. Radical surgery, excision, and enucleation followed by curettage of the surrounding bony tissue have all been advocated as treatment options. This study presents a successful case of conservative treatment of OMs with a 5-year follow-up.

Recomendações para o tratamento da síndrome de Sjögren

The recommendations proposed by the Sjögrens Syndrome Committee of the Brazilian Society of Rheumatology for the treatment of Sjögrens syndrome were based on a systematic review of literature in Medline (PubMed) and the Cochrane databases until October 2014 and on expert opinion in the absence of studies on the subject. 131 items classified according to Oxford & Grade were included. These recommendations were developed in order to guide the appropriate management and facilitate the access to treatment for those patients with an appropriate indication, considering the Brazilian socioeconomic context and pharmacological agents available in this country.

Oral Lichen Planus: Clinical Profile and Determination of Oral Epithelial Dysplasia

El liquen plano oral (LPO) es la enfermedad no infecciosa mas comun y se considera un trastorno potencialmente maligno. La etiologia y la patogenesis del LPO no se conoce y la transformacion maligna sigue siendo objeto de debate. El objetivo de este estudio fue evaluar las caracteristicas citologicas e histologicas del LPO y establecer la relacion entre los perfiles clinicos y microscopicos. Un total de 10 pacientes diagnosticados con LPO fueron investigados. Secciones histologicas se prepararon y tineron con hematoxilina-eosina para identificar 8 caracteristicas histologicas y 8 alteraciones citologicas. Finalmente, se determino el grado de displasia epitelial. La hiperplasia y la perdida de la polaridad de las celulas basales se detectaron en el 90 % de los casos. Anisonucleosis, pleomorfismo nuclear e hipercromasia afectaron al 100 % de las muestras. Seis casos fueron clasificados como displasia epitelial oral (DEO) de grado leve y no se reportaron casos de grado severo. Las alteraciones microscopicas fueron mayores en las mujeres (p <0,0001) y DEO de grado moderado fue diagnosticado solo en este grupo (p <0,0014). Los resultados demostraron que la asociacion de datos microscopicos y clinicos deben ser analizados para una mejor comprension del comportamiento de la enfermedad. La DEO estuvo ausente solo en un caso, por lo que el seguimiento periodico de los pacientes diagnosticados con LPO es necesario para evitar la transformacion maligna.

Enamel-Renal-Syndrome: case report: RARE ENAMEL-RENAL-SYNDROME REPORT

AIMS to describe a case in which dental changes were observed and investigation proceeded to consider Enamel-Renal-Syndrome (ERS), a rare disorder that associates amelogenesis imperfecta with nephrocalcinosis. CASE REPORT an 11-year-old male patient upon intraoral examination revealed generalized gingival hyperplasia, a few teeth were absent clinically and the remaining ones were yellowish-brown in color. The enamel alterations were suggesting of amelogenesis imperfecta. Unerupted teeth with increased pericoronal spaces, suggesting hyperplasic follicles or dentigerous cysts and an enamel with lower thickness and density were observed in the panoramic radiography. The patient was referred for an assay to investigate mucopolysaccharidosis; however, it was negative. A renal ultrasound showed bilateral nephrocalcinosis and laboratory exams, including calcium, phosphate, and creatinine levels were below the average. An incisional gingival biopsy showed numerous round to ovoid basophilic calcifications in the connective tissue. The final diagnosis was ERS. CONCLUSION Dentists should refer patients with similar clinical presentation for renal ultrasound evaluation in order to rule out the possible diagnosis of ERS.

Immunohistochemical Study of Laminin-332 γ2 Chain and MMP-9 in High Risk of Malignant Transformation Oral Lesions and OSCC

ABSTRACT Objectives Oral squamous cell carcinoma is associated with alterations in basement membrane. Laminin-332 is present in basal lamina and performs multiple biologic effects by γ2 chain. Matrix metalloproteinase acts disrupting extracellular components and was related to poor prognosis in cancer. Here, molecular profile of laminin-332 γ2 chain and matrix metalloproteinase-9 was assessed in oral lesions. Material and Methods The expression of laminin-332 γ2 chain and matrix metalloproteinase-9 (MMP-9) was examined by immunohistochemistry in 10 patients with high risk of malignant transformation oral lesions and 26 cases of oral squamous cell carcinoma (OSCC). Associations between microscopic and clinicopathologic features were established. Results Immunostaining of laminin-332 γ2 chain in high risk oral lesions was most detected in basement membrane which is continuous, while the majority of OSCC cases showed a discontinuous membrane (P = 0.001). It was observed a positive reaction for γ2 chain in invasive fronts and a higher expression in epithelial compartment of smoking patients with OSCC (P < 0.0001). In epithelium, MMP-9 expression was presented in all layers with no difference between lesions. However, an elevated immunostaining in stromal cells was associated with male patients (P = 0.0054), older than 60 years (P = 0.0101) and with OSCC. Conclusions Present study results support the hypothesis of changes in molecules expression in high risk oral lesions and oral squamous cell carcinoma. A relation between clinical and molecule profile was observed. Those molecules may represent a useful tool to predict oral cancer behaviour.

AB0533 Recommendations of Brazilian Society of Rheumatology for the Treatment of SjÖGren's Syndrome

Objectives Recommendations of Brazilian Society of Rheumatology for the treatment of Sjögrens syndrome (SS) were developed to guide management of SS considering the Brazilian social and economic context. Methods It was based on specialists opinion and systematic review on MEDLINE (PubMed) and Cochrane database until October 2014, including 127 articles classified according Oxford & Grade. Results Forty-four recommendations were organized in 3 main topics: Part 1. General recommendations and patient education: The management of SS should be conducted by multidisciplinary team. Systemic treatment should be according disease severity measured by EULAR Sjögrens Syndrome Disease Activity (ESSDAI). Patients should avoid caffeine, tobacco, alcohol, toothpaste with abrasive, and mouthrinses with alcohol. Patient should be educated about preventive measures for oral health and hydration. Aerobic exercise improves fatigue and quality of life. Immunization to influenza and pneumococo are indicated. Serum levels of vitamin D should be evaluated and supplemented if it is necessary. Part 2. Symptomatic treatment of dryness: Topical treatment for dry mouth includes saliva substitutes, sugar-free candies and gums. Topical treatments for dry eye are lubricants (glucanes or carboximethylcelulose), cyclosporine 0.05%, and punctual occlusion. Topical glucocorticoids may be used for severe dry eye for short time avoiding complications. Pilocarpine and cevimeline should be used for dry mouth and for severe dry eye. N-acetylcysteine may be used for dryness symptoms, including patients showing intolerance for muscarinic agonists. Omega-3 supplementation may be used to dry eye. Part 3. Systemic treatment: Immunosupressant and/or biological therapy are not indicated to dryness treatment. Hydroxichloroquine, glucocorticoid, and immunossupressants (azathioprine, mycophenolate mofetil, cyclophosphamide, cyclosporine) should be indicated according severity of systemic involvement. Rituximab is indicated to treat systemic manifestations without improvement with immunosuppressive therapy. Abatacept and belimumab may be considered in patients not responding to rituximab and with high level of disease activity. Acknowledgements Sociedade Brasileira de Reumatologia (SBR) Disclosure of Interest None declared

Transformação Cística como Consequência de Terceiro Molar Inferior Incluso

The permanence of impacted third molar in the jaws can cause many pathological alterations, amongst them the appearance of odontogenic cysts. The paradental cyst appearance and evolution next to a mandibular included third molar was diagnosised in radiograph routine follow-up, and its evolution and treatment are described. Are discussed the aspects related with the preventive removal to the impacted third molars and the necessity to institution a plan of treatment based in clinical history and radiograph in order to establish a preventive protocol the alterations caused by these impactions. The indication of extraction of impacted third enclosed can be a way to preventing the appearance of these and others pathologies associates to these lesions.