Evaluating the Effects of Carriere Motion Appliance and Twin Block Appliances in Class II Correction-A Retrospective Study.

This retrospective study compared Class II orthodontic non-extraction treatment using Carriere Motion Appliance (CMA) and Twin Block (TB) appliances. METHODS: The treatment of 38 patients was assessed. Pre- and post-treatment cephalometric radiographs were analyzed to evaluate skeletal, dental, and soft tissue treatment outcomes and efficacy. RESULTS: Both appliances effectively corrected the Class II molar relationship. When measured at the distal aspect of the first molar, TB achieved 4.22 mm, while CMA had a 2.55 mm correction. When measured in the mesial aspect, the CMA achieved a 3.9 mm correction. The changes in SNB and ANB were statistically significant only in the TB group. The CMA appliance demonstrated statistically significantly less protrusion of the mandibular incisors and less upper incisor retrusion without vertical changes compared to the TB appliance. The TB demonstrated statistically significant lower lip protrusion compared to the CMA. CONCLUSION: The CMA corrects Class II malocclusions only by exerting a dentoalveolar influence and does not demonstrate the added effects associated with TB, such as elongation of lower facial height (LFH) and less loss of lower anchorage. Nonetheless, the correction in the TB group comprised both dentoalveolar and skeletal components. The CMA promotes a multidirectional upper and lower molar movement, and despite our 2D cephalometric analysis, we were able to estimate the extent of upper molar derotation.

Why do second-cycle medical students choose oncology? A literature overview.

INTRODUCTION: Given the current global cancer epidemic across the world, the need for healthcare professionals in this field is crucial. Little is known about the factors that drive medical students toward oncology. METHOD: We conducted a systematic review of the literature (from 1980 to the present), using several search equations and selecting original articles written in English based on qualitative or quantitative surveys, to understand what motivates medical students to choose oncology. RESULTS: We identified only seven articles that reported quantitative surveys; no qualitative surveys were found. These seven surveys are composed of closed-ended questions and are pragmatic questionnaires based on field knowledge, but without an underlying theory. These studies most often interrogate students already oriented towards oncology. The following five concepts associated with the choice of oncology had the highest recurrence among these seven surveys, which had been conducted in different countries and at various times: interest in cancer management, initiation of the specialty during the 2nd cycle, job opportunities, low working hours, and quality of life. DISCUSSION: The literature on this topic is particularly scarce. No qualitative studies have been published in the English language. The limited data in the literature do not allow us to fully comprehend the problem.

Cephalometric and digital model analysis of dentoskeletal effects of infrazygomatic miniscrew vs. Essix- anchored Carriere Motion appliance for distalization of maxillary buccal segment: a randomized clinical trial.

TRIAL DESIGN: Parallel. OBJECTIVE: To compare skeletally anchored Carriere Motion appliance (CMA) for distalization of the maxillary buccal segment vs. Essix anchored CMA. METHODS: Thirty-two class II malocclusion patients were randomly allocated into two equal groups. One group was treated with infrazygomatic (IZC) miniscrew- anchored CMA (IZCG) and the other group treated with Essix retainer- anchored CMA (EXG). Two lateral cephalograms and two digital models for upper and lower arches were taken for each patient: immediately before intervention and after distalization had been completed. RESULTS: Distalization period was not significantly different between the two groups. In contrast to EXG, IZCG showed insignificant difference in ANB, lower incisor proclination, and mesial movement of the lower first molar. There was significant rotation with distal movement of maxillary canine and first molar in both groups. CONCLUSION: IZC anchored CMA could eliminate the side effects of class II elastics regarding lower incisor proclination, mesial movement lower molars with a more significant amount of distalization of the maxillary buccal segment but with significant molar rotation. TRIAL REGISTRATION: The ClinicalTrials.gov Protocol Registration and Results System (PRS) has this RCT registered as (NCT05499221) on 12/08/2022.

Evaluation of the effects of different distalization systems on dentoalveolar structures in Class II malocclusions using finite element analysis.

This study aimed to evaluate the movement pattern of two different distalization systems during the distalization of the maxillary dentition from the maxillary canine to the second molar tooth and the stresses in the periodontal ligament by anchoring the mandibular dentition using the finite element analysis method. A standard three-dimensional finite element model was created that simulates the mechanics planned to be implemented with maxillary and mandibular teeth, periodontal ligaments, cortical and trabecular bones. Two different distalization mechanics were applied to this model with the Carriere Distalizer appliance (CDA) and the clear splint appliance (CSA), and two scenarios were created. The amount of displacement of the teeth from the maxillary canine to the second molar tooth was calculated, and the von Mises stress distribution in the periodontal ligament of the relevant teeth was visualized with a color scale. The current study found that the distalization movement of the CDA and the CSA after the force applied by anchoring from the mandibular dentition was similar. Although the amount of distalization obtained with the CDA is higher, it is seen that the mass movement is more significant in the CSA. The CDA and CSA showed a similar distalization pattern. The current study findings suggest that the CSA can be added to the Class II distalization treatment options such as the CDA.

[The evolution of nursing careers, between hope and disillusionment]. / L'évolution des carrières infirmières, entre espoirs et désillusions.

The onset of the pandemic has exhausted and disenchanted most hospital professionals. It also seems to have accelerated awareness within the nursing group, particularly among the new "mastered" staff. Working conditions continue to deteriorate and career promises seem to be eroding. Yet in the late 2010s, spokespersons for the nursing occupational group were congratulating themselves on their latest victories. So what happened in such a short time?

A New Digital Method to Quantify the Effects Produced by Carriere Motion Appliance.

The aim of this study was to analyze a novel digital technique to quantify the distal tooth displacement and derotation angle produced by the Carriere Motion Appliance (CMA). Twenty-one patients with a class II molar and canine relationship underwent orthodontic treatment with CMA. All patients were exposed before (STL1) and after the CMA placement (STL2), submitted to a digital impression, and afterwards, data were uploaded to specific cephalometric software to allow automatic mesh network alignment of the STL digital files. Subsequently, the distal tooth displacement of the upper canines and first upper molars, as well as the derotation angle of the first upper molars were analyzed using the Pearson correlation coefficient (ρ). Repeatability and reproducibility were analyzed using Gage R&R statistical analysis. An increase in canine displacement was correlated with an increase in contralateral canine displacement (ρ = 0.759; p < 0.000). An increase in canine displacement was correlated with an increase in molar displacement (ρ = 0.715; p < 0.001). An increase in upper first molar displacement was correlated with an increase in the contralateral upper first molar displacement (ρ = 0.609; p < 0.003) and the canine displacement (ρ = 0.728; p < 0.001). The distal tooth displacement showed a repeatability of 0.62% and reproducibility of 7.49%, and the derotation angle showed a repeatability of 0.30% and reproducibility of 0.12%. The novel digital measurement technique is a reproducible, repeatable, and accurate method for quantifying the distal tooth displacement of the upper canine and first upper molar, as well as the derotation angle of the first upper molars after using CMA.

[French careers in oncology radiotherapy: Crossing views]. / Carrières en oncologie radiothérapie : réflexions croisées SFjRO-SFRO-SNRO.

The French Society of Young Radiation Oncologists (SFjRO), the National Union of Radiation Oncologists (SNRO) and the French Society of Oncological Radiotherapy (SFRO) aim to reconcile career opportunities and demographic needs in oncology. In 2021, 932 radiation oncologists (RO) are in regular activity in France, this represents an increase of more than 20% in ten years. Physician distribution is changing in public hospitals, cancer centers and private clinics. Currently one third of ROs works in each sector. In addition, fifteen percent of ROs have a mixed activity. In 2021, 180 young RO (trainees and residents) were questioned by SFjRO board about their training, internship, coaching and career guidance. An interactive communication was organized during the 32nd SFRO Meeting in 2021. It was an opportunity to bring the results of this study. More than 70% RO interviewed answered to the survey, for 55% among them, career choice was difficult. In order to help young ROs in their professional approach, three RO made an oral presentation during this session, about radiotherapy in public hospitals, private centers or with a mixed practice. The aim of this article is to summarize the highlights of the last SFjRO/SFRO session: expectations of young RO, career prospects and trends.

Retrospective investigation of the 3D effects of the Carriere Motion 3D appliance using model and cephalometric superimposition.

OBJECTIVES: Carriere Motion 3D™ appliance (CMA) represents a method for molar distalization and correction of class II malocclusion. The aim was to investigate the 3D effects of the CMA by superimposing digital models and cephalometric X-rays. MATERIALS AND METHODS: We retrospectively examined 16 patients treated with CMA in combination with class II elastics. We compared digitized models and cephalometric X-rays of records taken before therapy and after the removal of CMA. The records were superimposed to assess the skeletal and dentoalveolar changes. The results of the cephalometric X-ray analysis were compared to an untreated age- and gender-matched sample. RESULTS: Class II occlusion was corrected after 11.85 ± 4.70 months by 3.45 ± 2.33 mm. The average distalization of the upper first molars was 0.96 ± 0.80 mm. The analysis of the cephalometric X-rays confirmed a distalization of the upper first molars with distal tipping and revealed a mesialization of the lower first molars of 1.91 ± 1.72 mm. Importantly, CMA resulted in a mild correction of the skeletal class II relationship (ANB: - 0.71 ± 0.77°; Wits: - 1.99 ± 1.74 mm) and a protrusion of the lower incisors (2.94 ± 2.52°). Compared to the untreated control group, there was significant distalization of the upper first molars and canines with mesialization and extrusion of the lower first molars. CONCLUSION AND CLINICAL RELEVANCE: CMA is an efficient method for treating class II malocclusions. However, the class II correction is only partially caused by a distalization of the upper molars.

Anchorage control using miniscrews in comparison to Essix appliance in treatment of postpubertal patients with Class II malocclusion using Carrière Motion Appliance.

OBJECTIVES: To evaluate anchorage control using miniscrews vs an Essix appliance in treatment of Class II malocclusion by distalization using the Carrière Motion Appliance (CMA). MATERIALS AND METHODS: Twenty-four postpubertal female patients with Class II, division 1 malocclusion were randomly distributed into two equal groups. CMA was bonded in both groups, and one group was treated with miniscrews as anchorage (12 patients, mean age = 18.0 years) while the other group was treated with an Essix appliance as anchorage (12 patients, mean age = 17.8 years). For each patient, two cone-beam computed tomographic scans were obtained: one preoperatively and another after completion of distalization. RESULTS: In the Essix appliance group, there was a statistically significant anterior movement (2.2 ± 1.43 mm) as well as proclination of the lower incisor (5.3° ± 4.0°), compared to a nonsignificant anterior movement (0.06 ± 1.45 mm) and proclination (0.86° ± 2.22°) in the miniscrew group. The amount of maxillary molar distalization was higher in the miniscrew group (2.57 ± 1.52 mm) than in the Essix appliance group (1.53 ± 1.11 mm); however, the difference was not statistically significant. CONCLUSIONS: Miniscrews led to a decrease in the amount of anchorage loss in the mandibular incisors, both in terms of anterior movement and proclination.

[Goals, motivations, and difficulties of young oncology residents]. / Objectifs, motivations et difficultés des internes en phase socle en oncologie.

INTRODUCTION: The Association for education and research of interns in oncology (AERIO) conducted a national survey of the 2020-year oncology residents promotion in the "phase socle". The objective was to collect and analyze their motivations, as well as the objectives and limitations in the life and career of the residents during this first year of residency. METHODS: A questionnaire included 45 closed questions divided into 6 sections describing: the demographic characteristics of the population, the commitment of the students' and their clinical and academic expectations in the, their training, their life and career objectives, and their commitment in associative life. RESULTS: Seventy-eight of 119 residents participated (66%), of which 68 (87.2%) completed the questionnaire entirely. The population was predominantly women (60%) with a median age of 24 years. The choice between medical or radiation oncology was mostly undefined (87%) and 15% of the residents considered to change their medical specialty. The average hospital work time reported was predominantly between 45 and 65hours per week (83%). Sixty-nine percent were primarily interested in clinical research. One out of two residents (52%) did not have access to their half-day of training per week. DISCUSSION: This national survey made possible to analyze the perception of oncology young residents, as well as their career aspirations and their relationship to research.

Comparative Repeat Profiling of Two Closely Related Conifers (Larix decidua and Larix kaempferi) Reveals High Genome Similarity With Only Few Fast-Evolving Satellite DNAs.

In eukaryotic genomes, cycles of repeat expansion and removal lead to large-scale genomic changes and propel organisms forward in evolution. However, in conifers, active repeat removal is thought to be limited, leading to expansions of their genomes, mostly exceeding 10 giga base pairs. As a result, conifer genomes are largely littered with fragmented and decayed repeats. Here, we aim to investigate how the repeat landscapes of two related conifers have diverged, given the conifers' accumulative genome evolution mode. For this, we applied low-coverage sequencing and read clustering to the genomes of European and Japanese larch, Larix decidua (Lamb.) Carrière and Larix kaempferi (Mill.), that arose from a common ancestor, but are now geographically isolated. We found that both Larix species harbored largely similar repeat landscapes, especially regarding the transposable element content. To pin down possible genomic changes, we focused on the repeat class with the fastest sequence turnover: satellite DNAs (satDNAs). Using comparative bioinformatics, Southern, and fluorescent in situ hybridization, we reveal the satDNAs' organizational patterns, their abundances, and chromosomal locations. Four out of the five identified satDNAs are widespread in the Larix genus, with two even present in the more distantly related Pseudotsuga and Abies genera. Unexpectedly, the EulaSat3 family was restricted to L. decidua and absent from L. kaempferi, indicating its evolutionarily young age. Taken together, our results exemplify how the accumulative genome evolution of conifers may limit the overall divergence of repeats after speciation, producing only few repeat-induced genomic novelties.

[Cooperation protocol and advanced practice, an evolutionary perspective for the French radiation therapist]. / Protocole de coopération et pratique avancée, une perspective d'évolution pour le manipulateur en radiothérapie français.

For several years, the profession of radiographer has been unattractive and is in search of professional recognition. Increasingly complex therapeutic and diagnostic evolutions forces professionals to develop their skills to ensure quality and safe care for all patients. The primary role of the radiographer is to support patients and to accompany them during their examination or treatment, combining caregiver and technician's roles. Transversal missions and delegation of tasks are inherent to the profession but are not widely recognized. Cooperation between radiotherapy professionals is a response to offer the therapeutic radiographer/radiation therapist (RTT) opportunities in terms of attractiveness, career prospects, and increased skills. In radiotherapy, advanced practice activities already exist in some departments but require regulatory adjustments, in particular regarding the redistribution of the roles of RTT but also the status of these professionals. The formalization of these practices can be largely inspired by the many feedbacks around the world. This article aims to reflect the evolution's perspectives in the career of an RTT and on the valorisation of this profession in the current context.

Treatment effects of Carriere Motion Appliance on patients with class II malocclusion: A systematic review and meta-analysis.

OBJECTIVE: To investigate the treatment effects of Carriere Motion Appliance (CMA) on class II patients. METHODS: A comprehensive electronic search was performed in PubMed, Scopus, Web of science, ScienceDirect, ProQuest (dissertation and thesis), Google Scholar and ClinicalTrials.gov. All types of clinical trials that contained at least pre- and post-treatment measures of patients treated by CMA were included in this systematic review and meta-analysis. The risk of bias was assessed for all included studies. The considered outcomes were the skeletal, dento-alveolar, soft tissues, temporomandibular joint and airway changes, electromyographic activity and stability. RESULTS: Sixteen studies were included in this systematic review and meta-analysis. The absence of randomized controlled trials which could induce confounding and selection of participant bias is considered the main risk of bias affecting the available studies. Regarding the skeletal changes, no significant effects were appreciated (changes in SNB angle; SMD=-0.13; 95% CI (-0.57, 0.31); P=0.58. Changes in SN-MP; SMD=-0.11; 95% CI (-0.54, 0.33); P=0.64). With respect to the dento-alveolar changes, an increased lower incisor's proclination (L1-MP) was observed; SMD=-0.69; 95% CI (-1.14, -0.24); P=0.003. CMA caused an increase in the airway volume, an increase in the masseter and temporalis muscles activities and a minor relapse of malocclusion after 4-years of follow-up. The results should be taken with caution because only secondary level of evidence was found. CONCLUSIONS: The CMA used for the treatment of class II malocclusion did not cause skeletal changes; however, largely dento-alveolar effects were noticed. Prospective randomized clinical trials are highly recommended.

Three-dimensional cone-beam computed tomography comparison of shorty and standard Class II Carriere Motion appliance.

OBJECTIVES: To compare treatment effects of the standard and shorty Class II Carriere Motion appliances (CMAs) on adolescent patients. MATERIALS AND METHODS: Fifty adolescents with Class II malocclusion formed group 1, who were treated with shorty CMA (n = 25, 12.66 ± 1.05 years), and age- and sex-matched group 2, who were treated with standard CMA (n = 25, 12.73 ± 1.07 years). Treatment effects were analyzed by tracing with Invivo software to compare pretreatment (T1) cone-beam computed tomography (CBCT) images with post-CMA (T2) CBCT images. A total of 23 measurements were compared within and between groups. RESULTS: In groups 1 and 2, maxillary first molars showed significant distal movement from T1 to T2 (1.83 ± 2.11 mm and 2.14 ± 1.34 mm, respectively), with distal tipping and rotation in group 1 (6.52° ± 3.99° and 3.15° ± 7.52°, respectively) but only distal tipping (7.03° ± 3.45°) in group 2. Similarly, in both groups, the maxillary first premolars experienced significant distal movement with distal tipping but no significant rotation. In group 1, maxillary canines did not undergo significant distal movement. In both groups 1 and 2, mandibular first molars experienced significant mesial movement (1.85 ± 1.88 mm and 2.44 ± 2.02 mm, respectively). Group 1 showed statistically significantly less reduction in overjet and less canine distal movement with less distal tipping than group 2 (α < .05). CONCLUSIONS: The shorty CMA achieved Class II correction similarly to the standard CMA, with less change in overjet and distal tipping movement of the maxillary canines.

Evaluation of adolescent and adult patients treated with the Carriere Motion Class III appliance followed by fixed appliances.

OBJECTIVES: To determine dentoalveolar and skeletal effects produced in mature patients by the Carriere Motion Class III (CM3) appliance followed by fixed appliances. MATERIALS AND METHODS: This retrospective study evaluated 32 patients at three time points: T1 (initial), T2 (removal of CM3), and T3 (posttreatment). Serial cephalograms were traced and digitized, and best-fit regional superimpositions were constructed. Eleven linear and 7 angular variables were measured. The starting forms of the CM3 patients were compared with a sample of untreated subjects with normal occlusions and well-balanced faces. RESULTS: The CM3 phase lasted 6.3 months, followed by a phase of fixed appliances lasting 12.9 months; the total duration of treatment was 19.2 months. Minimal skeletal changes were measured sagittally, with only a slight increase in lower anterior facial height observed during treatment. Most treatment changes were dentoalveolar in nature. Wits appraisal increased 4.0 mm during treatment. The molar relationship improved by 6.0 mm during phase I, a value that rebounded slightly during phase II, resulting in an improvement toward Class I of 4.8 mm. Best-fit regional superimpositions revealed anterior movement of upper molars relative to the maxilla and posterior movement of lower molars relative to the mandible. CONCLUSIONS: The Carriere Motion Class III appliance is an effective and efficient method of resolving occlusal problems in minimally growing Class III patients. Primary treatment effects are dentoalveolar in nature with minimal skeletal alterations.

The Class II Carriere Motion appliance.

OBJECTIVES: To determine three-dimensional treatment changes produced by the Class II Carriere Motion appliance (CMA) in Class II adolescent patients with Class I and Class II skeletal relationships. MATERIALS AND METHODS: The sample included 59 adolescents (16 boys and 43 girls) with unilateral or bilateral Class II molar and bilateral Class II canine relationship. They were divided into group 1 with skeletal Class I (N = 27; ANB 2.90° ± 1.40°; 13.30 ± 1.53 years) and group 2 with skeletal Class II (N = 32; ANB 6.06° ± 1.64°; 13.26 ± 1.76 years). Cone beam computed tomography images were traced with Invivo software pretreatment (T1) and post-CMA usage (T2). The treatment changes in 36 measurements were calculated in each group, and the changes in 16 measurements were compared between them. RESULTS: In group 1 and 2, maxillary first molars underwent significant distal movement (1.92 mm ± 0.80 mm and 1.67 mm ± 1.56 mm, respectively) with distal tipping and rotation, maxillary canines underwent significant distal movement (2.34 mm ± 1.07 mm and 2.24 mm ± 1.91 mm, respectively) with distal tipping and rotation, and mandibular molars underwent significant mesial movement (-1.37 mm ± 1.23 mm and -2.51 mm ± 1.51 mm, respectively) with mesial tipping. Between the groups, there were significant differences in mandibular molar mesial movement and the U1-SN changes (P < .05). CONCLUSIONS: The CMA corrected Class II malocclusion through distal tipping and rotational movement of maxillary canines and molars and corrected mesial tipping of mandibular molars. Significantly more mandibular molar mesial movement and maxillary incisor flaring were observed in patients with skeletal Class II.

Relações e condições de trabalho dos professores paulistas (1995-2018) / Relaciones y condiciones de trabajo de los profesores paulistas (1995-2018) / Relations et conditions de travail des enseignants de são paulo (1995-2018) / Working relations and conditions of paulista teachers (1995-2018)

Resumo Neste artigo são analisadas as relações e condições de trabalho do professor da rede estadual paulista, destacando-se as formas de admissão, a progressão na carreira, o vencimento básico e a jornada de trabalho durante o período de 1995 a 2018. O artigo apresenta uma síntese dos dados obtidos por meio de pesquisa bibliográfica, estudo documental com base na legislação nacional e estadual e análise de dados estatísticos. Conclui-se que o período analisado foi caracterizado por uma política de desvalorização do trabalho docente expresso no grande número de professores contratados em caráter temporário, nos frágeis critérios de movimentação na carreira, no vencimento base abaixo do piso salarial e no descumprimento stricto sensu da composição da jornada expressa na Lei do Piso.

Resumen En este artículo son analizadas las relaciones y condiciones de trabajo del profesor de la red estadual paulista, destacándose las formas de admisión, la progresión en la carrera, el vencimiento básico y la jornada de trabajo durante el periodo de 1995 a 2018. El artículo presenta una síntesis de los datos obtenidos por medio de una investigación bibliográfica, estudio documental con base en la legislación nacional, estadual y análisis de datos estadísticos. Se concluye que el periodo analizado fue caracterizado por una política de desvalorización del trabajo docente expreso en el gran número de profesores contratados en carácter temporal, en los frágiles criterios de movilidad en la carrera, en el vencimiento base debajo del piso salarial y en el incumplimiento stricto sensu de la composición de la jornada expresa en la Ley del Piso.

Résumé Cet article analyse les relations et les conditions de travail des enseignants dans le réseau publique de l'État de São Paulo, en particulier les modalités d'admission et de progression dans la carrière, le salaire de base et la durée de la journée de travail, pour la période 1995 à 2018. L'article présente une synthèse des données obtenues à partir de recherches bibliographiques, d'études documentaires basées sur la législation nationale et de l'état de São Paulo et d'une analyse des données statistiques. En conclusion, la période se caractérise par une politique de dévalorisation du travail enseignant, manifeste par le grand nombred'embauches temporaires, par la fragilité des critères d'avancement professionnel, par le salaire de base qui reste inférieur au minimum et par le non-respect stricto sensu de la réglementation de la journée de travail établie par la Lei do Piso, censée garantir les conditions de travail et l'application du salaire minimum national pour les enseignants.

Abstract In this article, working relations and conditions of the teacher from the São Paulo state school system are analyzed, highlighting the forms of admission, career progression, base salary and working hours during the period from 1995 to 2018. The article presents a synthesis of data obtained through bibliographic research, documentary study based on national and state legislation and analysis of statistical data. It is concluded that the analyzed period was characterized by a policy of devaluation of the teaching work expressed in the large number of teachers hired on a temporary basis, in the fragile criteria of movement in the career, in the base salary below the base level of pay and in the strict noncompliance with the working hours composition expressed in the law (Lei do Piso).

Abandono docente en américa latina: revisión de la literatura / Labandon de la carrière de lenseignement en amérique latine : révision de la littérature / Abandono docente na américa latina: revisão da literatura / Teacher turnover in latin america: a literature review

Resumen La cantidad de docentes que deciden abandonar el aula antes de cumplir cinco años de experiencia es una preocupación creciente a nivel internacional. Para contribuir a la discusión, este estudio realiza una revisión sistemática de la literatura en torno al abandono docente producida en América Latina. El texto se focaliza en las razones aludidas por los/as docentes para irse del aula que se desprenden de las investigaciones realizadas en este contexto geográfico específico. Dentro de nuestras conclusiones vemos al encuentro con la vida escolar como una razón para dejar el aula. Por esto, aludimos al concepto de alfabetización micropolítica como una manera de abordar el fenómeno estudiado.

Résumé Le nombre d'enseignants qui décident d'abandonner la salle de classe avant cinq années en métier est une préoccupation croissante à l'échelle internationale. Pour contribuer à la discussion, cette étude effectue une révision systématique de la littérature sur le sujet en Amerique Latine. Appuyé sur des recherches menées dans ce contexte géographique l'accent est mis sur les raisons invoquées par les enseignant.e.s pour décrocher. En conclusion, nous avons identifié que la principale raison de leur abandon du métier est la confrontation avec la vie professionelle en école et cela nous a, par conséquent, amené vers le concept d'alphabétisation micro-politique en tant que moyen d'aborder le phénomène.

Resumo A quantidade de docentes que decidem abandonar a sala de aula antes de cumprir cinco anos de experiência é uma preocupação crescente em nível internacional. Para contribuir com tal discussão, este estudo realiza uma revisão sistemática da literatura produzida na América Latina em torno do tema. Por meio das pesquisas realizadas nesse contexto geográfico específico, são abordadas as razões apontadas pelos/as docentes para abandonar a sala de aula. Em nossas conclusões, consideramos que a vida escolar seria a razão principal para desistir da profissão. Por isso, apontamos o conceito de alfabetização micropolítica como uma maneira de abordar o fenômeno estudado.

Abstract Growing numbers of teachers are leaving the classroom before having served five years, and this is increasingly becoming an international concern. To contribute to the discussion, this study systematically reviews the literature on teacher attrition in Latin America, focusing on the reasons teachers give for abandoning their profession, in this specific geographical context. The results point to encountering school life as the main reason for leaving a teaching career; thus, we use the concept of micropolitical literacy to approach the phenomenon studied.

Federal civil service examinations for university faculty and affirmative actions for racial equality / Discrimination positive envers les candidats noirs dans le recrutement denseignants dans les universités publiques / Concursos públicos federales para profesores y acciones afirmativas para candidatos negros / Concursos públicos federais para docentes e ações afirmativas para candidatos negros

Abstract In this study, quali-quanti methodology was applied to analyze the implementation of Law no. 12,990/2014 on quotas for Black candidates at 63 federal universities and 38 federal 'institutes' (secondary and vocational training), during the period that spanned 2014 to 2018. The law reserves 20% of teaching vacancies filled through federal civil servant examinations for Black people. We observe the distance that separates the legally-stipulated conditions and actual practice in these institutions. As five years have now gone by since the passage of this legislation, it seems safe to say that the goal of expanding racial/color diversity in federal civil service will not be achieved through public examinations for teaching careers. Moreover, meeting this goal becomes progressively harder, given the present scenario of resurgence of meritocratic discourses that question the legitimacy of affirmative actions for Afro-Brazilians.

Résumé Ce travail utilise une méthodologie quali-quantitative pour analyser l'application de la loi no 12 990/2014, réservant 20% des postes à des candidats noirs dans les concours de recrutement d'enseignants dans 63 universités féderales et 38 instituts superieurs d´éducation dans la période 2014-2018. Il a été constaté que le pourcentage prévu par la loi est loin de celui pratiqué par les universités fédérales et les instituts fédéraux. Passés cinq ans de l'adoption de la loi, il semble que l'objectif d'élargir la diversité concernant la race et la couleur de la peau dans la fonction publique ne sera pas atteint par le biais de concours de recrutement, dans un contexte de recrudescence des discours méritocratiques remettant en question la légitimité de la discrimination positive envers les noirs.

Resumen Analizamos, por metodología cuali-cuantitativa, la implementación de la Ley no. 12.990/2014, que reserva el 20% de las vacantes de concursos públicos federales para docencia en 63 universidades federales y 38 institutos federales a candidatos negros, en el periodo de 2014 a 2018. Constatamos que el porcentaje legalmente previsto está muy lejos del practicado en universidades federales e institutos federales. Transcurridos más de cinco años después de la aprobación de la ley, parece que el objetivo de ampliar la diversidad de raza/color en el servicio público federal no será alcanzado mediante concursos para carreras docentes, en un escenario de resurgimiento de discursos meritocráticos que amenazan la legitimidad de acciones afirmativas para personas negras.

Resumo Analisamos, por metodologia qualiquantitativa, a implementação da Lei n. 12.990/2014, que reserva 20% das vagas de concursos públicos federais para candidatos negros e negras, no âmbito das carreiras docentes de 63 universidades federais e de 38 institutos federais, no período 2014 a 2018. Constatamos que o percentual legalmente previsto está longe do praticado nas universidades federais e institutos federais. Passados mais de cinco anos desde a aprovação da lei, parece que o objetivo de ampliar a diversidade de raça/cor no serviço público federal não será alcançado por concursos para as carreiras docentes, em um cenário de recrudescimento de discursos meritocráticos que colocam em xeque a legitimidade de ações afirmativas para pessoas negras.