Abstract Objectives To evaluate the efficacy of a conservative treatment to prevent the progression of caries using an infiltrant on non-cavitated pit and fissures. Material and Methods This controlled clinical trial selected 23 volunteers with clinically and radiographically non-cavitated occlusal caries among patients presenting a “rather low” to “very high” caries risk. Eighty-six teeth were randomly divided into two experimental groups: teeth receiving a commercial pit-and-fissure sealant (Alpha Seal-DFL) and contralateral teeth receiving Icon infiltrant (DMG). Caries progression was monitored by clinical (laser fluorescence caries detection) and radiographic examination at 12-month intervals over a period of 3 years of monitored caries progression. Probing the sealing materials to detect areas of retention was also used to evaluate marginal integrity. Results Statistical analysis showed no difference in caries progression using laser fluorescence caries detection when both materials were compared, regardless of the evaluation times (p>0.05). No significance was observed when the marginal sealant integrity of both materials was compared, regardless of the evaluation time (p<0.05). Marginal integrity significantly reduced after 1 year for both materials (p<0.05), but remained stable after 2 and 3 years of evaluation, compared with 1-year results (p>0.05). SEM analysis exhibited a more homogeneous sealing for the infiltrant than obtained by the sealant. Conclusions The infiltrant was effective to prevent the caries progression in non-cavitated pit-and-fissures after 3 years of clinical evaluation, comparable with the conventional sealant. The infiltrant also presented better results in terms of caries progression at the 3-year evaluation time using the radiographic analysis.

ResumoObjetivoAlguns parâmetros clínicos de saúde periodontal foram avaliados comparativamente em pacientes que utilizavam braquetes convencionais e linguais.Material e métodoUm examinador treinado registrou as frequências de placa bacteriana visível (PB) e sangramento à sondagem (SS), bem como dos índices higiene oral simplificado (IHO-S) e gengival modificado (IGM), em 83 pacientes de duas clínicas. Os efeitos dos tratamentos ortodônticos na saúde periodontal foram analisados por regressão logística (α=0,05).ResultadoNo grupo convencional, a frequência de placa bacteriana foi significativamente mais elevada nas superfícies vestibulares dos dentes anteriores (OR = 12,5) e posteriores superiores (OR = 3,6), p < 0,01. O SS nos dentes posteriores também foi mais frequente neste grupo, p < 0,05. O grupo lingual apresentou frequência mais alta de placa bacteriana nas superfícies linguais dos dentes anteriores (OR = 4,3; p = 0,0034). O grupo convencional apresentou frequências significativamente elevadas de gengivite leve nas regiões vestibulares dos dentes anteriores (OR = 9,0) e posteriores superiores (OR = 16,7), p < 0,05, e de papilas anteriores (OR = 9,0 p = 0,0003). Por outro lado, o grupo lingual evidenciou gengivite leve mais frequentemente nas superfícies linguais dos dentes anteriores (OR = 54,5), p < 0,01.ConclusãoCom base nos resultados deste estudo, as condições clínicas de saúde periodontal podem ser consideradas razoáveis em pacientes que utilizavam braquetes convencionais e linguais.

AbstractObjectiveSome clinical periodontal health parameters were assessed comparatively in patients using conventional and lingual brackets.Material and methodA trained examiner registered the frequencies of visible plaque (VP), bleeding on probing (BOP), as well as the simplified oral hygiene (OHI-S) and modified gingival (MGI) indices in 83 subjects from two clinics. The effects of orthodontic treatments on periodontal health were analyzed using logistic regression (α = 0.05).ResultIn the conventional group, the frequency of visible plaque was significantly higher on the buccal surfaces of anterior (OR = 12.5) and maxillary posterior (OR = 3.6) teeth, p < 0.01. BOP in posterior teeth was also more frequent in this group, p < 0.05. The lingual group presented higher frequency of visible plaque on the lingual surfaces of anterior teeth (OR = 4.3; p = 0.0034). The conventional group had significantly higher frequencies of mild gingivitis in the buccal regions of anterior (OR = 9.0) and maxillary posterior (OR = 16.7) teeth, p < 0.05, and anterior papillae (OR = 9.0; p = 0.0003). On the other hand, the lingual group evidenced mild gingivitis more often in the lingual regions of anterior teeth (OR = 54.5), p < 0.01.ConclusionBased on the results of this study, the clinical periodontal health conditions may be considered acceptable for patients using both conventional and lingual brackets.

The plasma cell neoplasms may present in soft tissue as extramedullary plasmacytoma (EMP), in bone as a solitary plasmacytoma of bone (SPB), or as part of the multifocal disseminated disease multiple myeloma (MM). The EMP is rare, comprising around 3% of all plasma cell neoplasm. The majority (80%) occurs in the head and neck region. In this study we report a case of a man, 70 years old, melanoderm, with a lesion of the oral cavity. Upon physical examination, a lesion was found that extended throughout the posterior upper alveolar ridge, as far as the maxillary tuber on the left side, extending towards the palate. Radiographic examination, complementary laboratory exams were performed. Based on the conclusive symptoms of plasmacytoma, the patient was referred to the hematology service for treatment with local radiotherapy. The patient responded satisfactorily to the treatment, and after 15 months, all clinical symptoms of the lesion in the oral cavity had disappeared.

La neoplasia de células plasmáticas se presenta en los tejidos blandos como plasmocitoma extramedular (EMP), en el hueso como plasmocitoma solitario (SPB), o como parte de una enfermedad diseminada, el mieloma múltiple (MM). El EMP es poco frecuente, manifestandose en alrededor de un 3%. Se presentan generalmente (80%) en las regiones de cabeza y cuello. En este reporte de caso, un hombre de 70 años, melanoderma, presentaba una lesion en la cavidad oral. En el examen físico se observó la lesión a lo largo de la parte posterior del reborde alveolar superior, en la tuberosidad maxilar en el lado izquierdo hacia el paladar. Se realizaron exámenes radiográficos y de laboratorio. Con base en los signos de plasmocitoma, el paciente fue referido a tratamiento con radioterapia. El tratamiento fue muy exitoso y después de 15 meses se observó que el paciente no presentaba los signos clínicos característicos de la lesión neoplásica.