[pt] O presente trabalho tem como objetivo investigar as contradições e possibilidades clínicas inauguradas pelo conceito de regressão. Partiremos das postulações freudianas, nas quais abordaremos a regressão em seu aspecto intrapsíquico, sendo associada aos processos oníricos e de formação sintomática, para depois seguirmos com autores que consideramos relacionais. Dentre eles, o primeiro a ser abordado é o húngaro Sándor Ferenczi, quem primeiro apresenta a regressão enquanto fenômeno clínico e destaca a importância dos processos internos do analista na relação terapêutica. Em sua esteira, seguiremos com Donald Winnicott e Michael Balint. Veremos nas contribuições dos dois autores uma descrição mais detalhada e assertiva sobre os estados regressivos. Em todos os três autores, na medida em que tratamos do fenômeno da regressão, estaremos cotejando também as ideias de contratransferência e as teorias acerca da constituição subjetiva. Em uma última parte do trabalho faremos uma aproximação da clínica contemporânea em uma tentativa de descrever como o conceito da regressão é um que exprime inovações importantes para se pensar a clínica hoje. Veremos como as discussões acerca do conceito ao longo da história da psicanálise contemplam aspectos essenciais para a clínica como o campo transferencial, o corpo e o manejo. / [en] The present work has as main objective investigate the contradictions as well as clinical possibilities initiated by the notion of regression. We ll start off from the freudian postulations, through which we ll approach the idea of regression in its intrapsychic aspect associating it with the process of dream and symptom formation. We ll then proceed with authors by us considered relational. Among them, the first to be addressed will be the Hungarian Sándor Ferenczi, who is the first to introduce the idea of regression as a clinical phenomena and to highlight the importance of the analyst s internal world in the therapeutic relationship. Following Ferenczi, we ll regard the works of Donald Winnicott e Michael Balint. Through their contributions we ll bring to light a more detailed and assertive description of the regressive states. However, in all threes authors, as we approach the phenomena of regression, we ll be also examining the idea of counter- transference and the theories regarding the constitution of subjectivity. In the last part of the work we ll propose an approximation to contemporary psychoanalysis in an attempt to describe how the concept of regression contains important innovations for clinical references today. We ll progress by presenting how the discussions about such phenomena through history of psychoanalysis contemplate pivotal clinical aspects such as transference, body and clinical handling.

[pt] O presente trabalho tem como objetivo investigar a problemática do trauma a partir do paradigma inaugurado pelas contribuições teórico-clínicas de Sándor Ferenczi, e que foram, posteriormente, desenvolvidas por Michael Balint e Donald Winnicott. Para isso, na primeira parte desse trabalho, apresentaremos as noções de trauma, nas perspectivas teóricas de Sigmund Freud e de Ferenczi, destacando as suas principais diferenças. A partir da compreensão ferencziana do trauma, abordaremos as principais modificações técnicas propostas pelo autor. Essas modificações serão tomadas como base para discutirmos, na segunda parte, a maneira pela qual Balint redefine a teoria sobre os primórdios da constituição subjetiva, principalmente, a partir das definições de amor primário e de falha básica. Essas concepções implicarão em uma revisão da técnica psicanalítica, no sentido de reconhecer e manejar fenômenos clínicos que remetem aos momentos iniciais de subjetivação. Na terceira parte, apresentaremos a compreensão de Winnicott sobre a experiência traumática, entendida como reação às falhas ambientais, assim como a compreensão de seus efeitos no processo de amadurecimento emocional. Além disso, discutiremos a maneira pela qual Winnicott define o espaço analítico, o manejo das regressões e o uso das interpretações. Por fim, na quarta parte desse trabalho, destacaremos, a partir desses três autores, alguns elementos que podem ser tomados como coordenadas teórico-clínicas para pensarmos a especificidade de uma clínica do trauma. / [en] Our investigation aims to research how the notion of trauma was described in Sándor Ferenczi s works and to relate his contributions to Michael Balint and Donald Winnicott s later developments. To achieve this objective, in the first part of this investigation, we will introduce the notion of trauma in both Sigmund Freud and Ferenczi s works, aiming to highlight their key differences. We will then discuss the main technical adjustments proposed by Ferenczi. Based on this discussion, in the second part, we will investigate the manner through which Balint redefines the early moments of the constitution of subjectivity, based mainly on his notions of primary love and basic fault. This new approach will lead us to a revision of the psychoanalytic technique, whereby the identification and clinical handling of clinical phenomena are referred to the early moments of the constitution of the ego. In the third part, we will discuss Winnicott s understanding of the traumatic experience, conceived as a reaction to environmental flaws, as well as the effects that these flaws will have on the process of emotional maturation. We will study the manner through which Winnicott defines the analytical setting, clinical handling of regressions in analysis and the use of interpretations. Finally, in the fourth part of this thesis, we aim to extract, from these authors, key elements that could be used as theoretical and clinical references for defining the specificities regarding the approach of cases pertaining to early trauma in psychoanalysis.

Depuis plus de 60 ans, les résines composites à usage dentaire n’ont cessé d’évoluer vers des matériaux toujours plus fonctionnels et esthétiques. Toutefois, l’obtention du matériau de restauration idéal présentant des propriétés mécaniques et physico-chimiques optimales reste encore aujourd’hui un défi de taille. La nature et la proportion des monomères, le type, la taille et le taux de charges, la qualité des liens entre charges et matrice et la présence de porosités au sein des matériaux apparaissent comme des éléments pouvant influencer ces propriétés. Afin d’avancer dans le compréhension de l’impact de ces différents facteurs, plusieurs études ont été entreprises à l’aide de trois résines composites commerciales de viscosités différentes : une résine de viscosité élevée (Filtek P60 – 3M ESPE), une résine de viscosité moyenne (Grandio – Voco) et une résine de viscosité faible (Filtek Supreme XTE – 3M ESPE). L’influence de la manipulation clinique des matériaux sur le taux et le volume des porosités a été évaluée à l’aide de la tomographie 3D à rayons X. La manipulation augmente le pourcentage et diminue le volume moyen des porosités. En outre, plus le matériau est fluide et plus il présente de porosités en son sein. Deux groupes d’échantillons ont été réalisés afin d’évaluer l’influence de la porosité sur le comportement mécanique et physico-chimique des matériaux : l’un à partir des matériaux simplement extrudés des seringues et l’autre au sein duquel nous avons réalisé une adjonction artificielle de porosités. La contrainte de polymérisation à été déterminée à l’aide d’une machine de traction, l’absorption/solubilité a été mesurée en respectant le cadre ISO 4049, le comportement mécanique vrai a été évalué en traction à l’aide du système VidéoTractionTM, les comportements apparents en compression et flexion ont été étudiés respectivement à l’aide d’une machine de compression et d’une machine de flexion 3 points. Les différents constituants organiques et minéraux apparaissent comme des éléments déterminants dans le comportement physico-chimique et mécanique des matériaux. La porosité initiale est également un facteur prépondérant dans l’explication dudit comportement. Son influence n’est cependant pas proportionnelle à son taux puisque l’ajout de porosités artificielles n’influence pas significativement les résultats / For the past 60 years, dental resin composites have been constantly evolving, becoming increasingly functional and aesthetic materials. However, obtaining the ideal dental restorative material, with optimum mechanical and physicochemical properties, is still a significant challenge today. The nature and proportion of the monomers, the type, size and content of fillers, the quality of the bonds between the fillers and the matrix and the presence of porosities inside materials all emerge as aspects that can influence these properties. To improve our understanding of the impact of these various factors, a number of studies have been undertaken using three commercially-available resin composites with different viscosities: one high-viscosity resin (Filtek P60 – 3M ESPE), one moderate-viscosity resin (Grandio – Voco) and one low-viscosity resin (Filtek Supreme XTE – 3M ESPE). The influence of clinical handling of materials on the rate and volume of porosities has been evaluated by 3D X-ray computed tomography. Handling increases the porosity percentage and reduces the average porosity volume. Furthermore, the more flowable the material is, the more porosities it has within it. Two groups of samples were prepared in order to evaluate the influence of porosity on the mechanical and physicochemical behavior of materials: one group of samples consisted of materials simply extruded from syringes, while additional porosities were added artificially in the other samples. The polymerization stress was determined using a tensile testing machine, the absorption/solubility was measured in accordance with ISO 4049, the true tensile mechanical behavior was assessed using the VidéoTractionTM system, and the apparent compressive and flexural behaviors were studied using a compression test machine and a 3-point flexural test machine, respectively. The various organic and mineral components appear to be key elements in the physicochemical and mechanical behavior of materials. The initial porosity is also a predominant factor in terms of explaining this behavior. However, its influence is not proportional to its rate, since the addition of artificial porosities does not significantly affect the results