Protocolo de pesquisa: avaliação do Tratamento Restaurador Atraumático em pacientes adultos

O objetivo primeiro do Tratamento Restaurador Atraumático (TRA) é reduzir a indicação de extrações dentárias através de uma técnica operatória de baixo custo. Considerando as dificuldades do Serviço de Saúde Pública do Brasil de suprir a demanda de serviço requerida pela população adulta de baixa renda, que usualmente recebe atendimento emergencial, o objetivo deste estudo é avaliar a performance clínica de um cimento de ionômero de vidro de alta viscosidade empregado através da técnica atraumática modificada em cavidades de uma e de múltiplas superfícies, comparativamente à abordagem restauradora convencional. Serão analisados a performance clínica dos materiais; o custo (material e recursos humanos); a satisfação do paciente com o tratamento recebido; e o impacto preventivo do tratamento.The primary objective of the Atraumatic RestorativeTreatment (ART) is to reduce the indication of tooth extraction by means of a low-cost technique. Considering the difficulties of Brazilian public services to meet the demand of care of the low-income population, with lack of care to the adult population, which usually receives only emergency care, the aim of this study is to assess the performance of high-viscosity glass ionomer cements accomplished by the modified atraumatic restorative treatment in one- and multiple-surface cavities, compared to the conventional restorative approach. It will be analyzed the clinical performance of the materials; cost (material and human resources); patient satisfaction with the treatment received; and preventive effect of treatment

Dynamics of homeomorphisms of the torus homotopic to Dehn twists

In this paper we consider torus homeomorphisms $f$ homotopic to Dehn twists. We prove that if the vertical rotation set of $f$ is reduced to zero, then there exists a compact connected essential "horizontal" set K, invariant under $f$. In other words, if we consider the lift $\hat{f}$ of $f$ to the cylinder, which has zero vertical rotation number, then all points have uniformly bounded motion under iterates of $\hat{f}$. Also, we give a simple explicit condition which, when satisfied, implies that the vertical rotation set contains an interval and thus also implies positive topological entropy. As a corollary of the above results, we prove a version of Boyland's conjecture to this setting: If $f$ is area preserving and has a lift $\hat{f}$ to the cylinder with zero Lebesgue measure vertical rotation number, then either the orbits of all points are uniformly bounded under $\hat{f}$, or there are points in the cylinder with positive vertical velocity and others with negative vertical velocity