Double aortic arch diagnosed in a 44-year-old woman with recurring respiratory infections

Complete vascular rings are originated because of the persistence of the fourth aortic arches, which surround the trachea and esophagus partially or completely, compressing them. The most common type of complete vascular ring is the double aortic arch. Symptoms usually appear in the first months of life, and are provoked by esophageal and tracheal compression. The diagnosis is usually made through the chest X-ray and the esophagogram in patients with dysphagia. We present a case in which the diagnosis of a double aortic arch was made in adulthood, suspected through a spirometry test and a chest X-ray

Influence of the patients' sex, type of dental prosthesis and antagonist on residual bone resorption at the level of the premaxilla

Objectives: To analyze the height and width of the ridge at the level of the premaxilla in edentulous patients, eva-luating whether the sex of the patient, type of prosthetic rehabilitation and antagonist have an influence. Material and Method: We randomly selected a total of 89 patients, having an average age of 66.21 years old. A total of 308 measurements were made, all of them at the level of the premaxilla, in the intercanine area. As dependent variables, we analyzed the patients' sex, age and the antagonist: removable (dental) prostheses (RP), fixed (dental) prostheses (FD), natural dentition (ND). As independent variables, we measured the height and residual width in sagittal sections provided by tomographic studies using Dentascan®. Results: We observed a significantly smaller ridge in women versus in men, and in patients whose antagonist was a fixed prosthesis; whereas for the type of prosthesis, we did not observe significant differences between the two categories analyzed. Conclusions: Bone resorption at the level of the premaxilla is a variable process in which a smaller size is observed (height and width) in women and when the antagonist is a fixed prosthesis. © Medicina Oral S. L

Meta-analytic study on the frequency and treatment of oral antral communications

Objective: To determine the optimum surgical treatment for oral antral communications (OAC) and to understand the main post-operative complications.Study Design: Meta-analytical, observational and retrospective study of 1,072 cases of OAC obtained from a literature review of 15 articles. Results: OAC occur slightly more often in men and during the fourth decade of life. Its primary etiological factor is dental extraction, most often affecting the third molar. The most common treatment has been the use of Bichat's fat pad grafts, whereas the technique with the highest percentage of complications has been the use of the palatal rotation flap. The most frequent complication has been the fistulization of the OAC. Conclusions: Early diagnosis of OAC and its treatment within 48 hours of evolution are fundamental in order to properly resolve this pathology. The use of Bichat's fat pad grafts is a simple technique that offers excellent vascularization and results. © Medicina Oral

Observational study of 67 wide platform implants treated with avantblast surface : results at three year

Objective: This paper shows the results of the clinical and radiographic behavior, at 3 years, of 67 wide platform implants undergoing prosthetic load. Study Design: This is an observational prospective study of 67 implants in 49 patients within the range of 54-69 years of age. Screening was performed after a radiological study with panoramic and tomographic radiographs followed by the implantological treatment with prosthetic load and clinical (15 days, 1, 6, 12, 24 and 36 months) and radiological control follow-up (6, 12, 24 and 36 months). Results: During the healing period 1 implant failed, representing a 98.5% survival. After placing the prosthesis, it was not necessary to remove any implant, therefore 66 implants remain successfully in place. Conclusions: The favorable results and follow-up after the prosthetic load of 66 implants (CSR of 100%) attest that wide platform implants can and should be applied after careful planning and case selection

Efficacy of platelet-rich plasma applied to post-extraction retained lower third molar alveoli. A systematic review

Dental retentions have a high prevalence among the general population and their removal can involve multiple complications. The use of platelet rich plasma has been proposed in an attempt to avoid these complications, as it contains high growth factors and stimulates diverse biological functions that facilitate the healing of soft and hard tissues. Objectives: To evaluate the available scientific evidence related to the application of platelet-rich plasma in the post-extraction alveoli of a retained lower third molars. Material and Methods: A systematic review of published literature registered in the Medline, EMBASE, Cochrane and NIH databases. The following categories were included: human randomized clinical studies. Key search words were: platelet rich plasma; platelet rich plasma and oral surgery; platelet rich in growth factors and third molar. Results: Of 101 potentially valid articles, seven were selected, of which four were rejected as they failed to meet quality criteria. Three studies fulfilled all selection and quality criteria: Ogundipe et al.; Rutkowski et al.; Haraji et al. The studies all measured osteoblast activity by means of sintigraphy, and also registered pain, bleeding, inflammation, temperature, numbness as perceived by the patients, radiological bone density and the incidence of alveolar osteitis. Conclusions: Scientific evidence for the use of PRP in retained third molar surgery is poor. For this reason rando - mized clinical trials are needed before recommendations for the clinical application of PRP can be made

Evaluation of the anaesthetic properties and tolerance of 1:100,000 articaine versus 1:100,000 lidocaine. : a comparative study in surgery of the lower third molar

Objectives: To evaluate the anaesthetic properties and tolerance of articaine versus lidocaine at equal vasoconstrictor concentration. Study Design: A total of 96 male and female patients who underwent surgical treatment of the lower third molar participated. Patients were randomly assigned to articaine hydrochloride with epinephrine 1:100,000 and lidocaine hydrochloride with epinephrine 1:100,000. The variables analysed were latency period, duration of anaesthetic effect, tolerance and adverse reactions. Results: Both the latency period and the duration of anaesthetic effect were greater for articaine, although the differences were not statistically significant. Latency: mean difference of 2.70 ± 2.12 minutes (95%CI of -1.51 minutes - 6.92 minutes). Duration: mean difference of -33 minutes 5 seconds ± 31 minutes (95% CI -1 hour 35 minutes - 29 minutes). There were 4 adverse events that did not require the patients to be withdrawn from the study. Conclusions: The anaesthetics in this study have very similar properties for use in surgery and have demonstrated a good safety and tolerability profile. © Medicina Oral

Material flow accounting in Chile, Ecuador, Mexico and Peru (1980-2000)

In this paper we compare the resource flows of Chile, Ecuador, Mexico and Peru between 1980 and 2000. In this time span, the domestic extraction of materials increased in the four countries, mainly due to the mining sector in Chile and Peru, biomass and oil in Ecuador and construction minerals in Mexico. Imports and exports increased too, due to the increasing integration in the international markets, prompted by the liberalization policies undertaken by the four countries between the late 1970s and the late 1990s. The four countries had a negative physical trade balance for most of the period analyzed, meaning that their exports exceeded their imports in terms of weight. However, the increase of imports reduced the physical deficit in Chile, Mexico and Peru. Ecuador’s physical deficit was the highest and did not decrease in the period analyzed. Also, a diversification of exports away from bulk commodities could be observed in Chile and Mexico, and to a lesser extent in Peru, whereas in Ecuador the export sector remained mainly based on oil and biomass. More research is needed to explore the environmental effects of this phenomenon. Also, the indirect flows associated to the direct physical flows deserve to be subject to further analysis.

Inteligencia emocional rasgo como amortiguador del estado de ánimo en docentes de educación infantil y primaria durante el impacto de la COVID-19

Background: Trait Emotional Intelligence (EI) is a personal characteristic that can act as a buffer factor against vital challenging circumstances and be a predictor of mood in a variety of natural situations such as those derived from the social context of the COVID-19 pandemic. The general aim of this research was to study the relationship between trait EI and teacher moods during confinement. Method: The study included 478 participants, 316 Preschool teachers and Elementary teachers from public centers in the Region of Murcia and 162 university students of Preschool and Elementary education degrees. The instrument used to assess trait EI was the TEIQue-SF; to assess the moods experienced during the impact of COVID-19, a short version of the POMS was used.Results: Teachers with high trait EI were perceived to be more energized and kinder, as well as less nervous, moody, sad and tired, just the opposite pattern of teachers with a low trait EI profile. In addition, female teachers obtained higher scores in negative mood states. Conclusions: Although the study is correla-tional, the results support the idea of trait EI as a protective factor against stress, which reinforces its role as a promoter of teacher well-being.Antecedentes: La Inteligencia Emocional (IE) rasgo es una característica personal que puede actuar como factor protector contra circunstancias vitales desafiantes y ser un predictor del estado de ánimo en situaciones naturales como las derivadas del contexto social de la pandemia COVID-19. El objetivo general fue estudiar la relación entre IE rasgo y los estados anímicos docentes durante el confinamiento. Método: Se contó con 478 participantes, 316 docentes de Educación Infantil (EI) y Primaria (EP) de centros públicos de la Región de Murcia y 162 estudiantes de los Grados de EI y EP. Los instrumentos empleados fueron: para evaluar la IE rasgo, el TEIQue-SF; para evaluar los estados de ánimo vividos durante el impacto de la COVID-19 se utilizó una versión breve del POMS. Resultados: Los docentes con IE elevada se percibieron más enérgicos y considerados con los demás; así como menos nerviosos, malhumorados, tristes y cansados, justo el patrón contrario al de docentes con perfil de IE baja. Además, las maestras obtienen puntuaciones mayores en los estados emocionales negativos. Conclusiones: Si bien el estudio es correlacional, los resultados avalan la idea de la IE rasgo como factor protector frente al estrés, lo que refuerza su papel como promotor del bienestar docente

Panoramic and tomographic implant studies : role in the diagnosis of sinus disorders

Objective: To study the presence of sinus disorders and their diagnosis based on clinical and radiographic findings, correlating their presence with tomography tests and panoramic radiography. Study design: We conducted a retrospective study on 152 patients who were seeking implant treatment, thereby allowing us to evaluate 42 patients who had abnormal sinuses. The patients underwent an evaluation of their medical history as well a clinical examination, panoramic radiography and tomographic study. Results: The average age of the patient was 59.8 years old, and 54.76% of the group were males and 45.23% were females. Prior respiratory disorders were present in 52.38% of the patients, and 57.3% of the group presented dental disorders. In assessing the type of wound, we observed that 73.21% were mucosal hyperplasia and 26.78% were mucous cysts. Of the 56 sinuses affected, only 28.57% were diagnosed using panoramic radiography. Conclusions: Panoramic radiography has limitations in the diagnosis of sinus disorders; computerized tomography (CT) remains the most effective diagnostic test