Determinación de la morfología del canal incisivo mandibular mediante tomografía computarizada de haz cónico (CBCT) en población de Valdivia, Chile / Determination of mandibular incisor canal morphology by cone beam computed tomography (CBCT) in a population of Valdivia, Chile

RESUMEN: El canal incisivo mandibular (MIC) es un canal neural que contiene una de las ramas inferiores del nervio alveolar inferior, llamado nervio incisivo mandibular, que puede resultar dañado durante intervenciones quirúrgicas y causar complicaciones postoperatorias. Estudio descriptivo de corte transversal. Se identificó el MIC en la imagen transversal del canino en 83 hemiarcadas. Se registró edad, sexo, hemiarcada, longitudes desde reborde alveolar vestibular de canino a MIC, cortical lingual y vestibular de canino a MIC, base mandibular de canino a MIC y ubicación del MIC (tercio lingual, medio, vestibular). Medidas se registraron en milímetros. Se aplicó test T-student para muestras independientes para variables de longitud y Chi-cuadrado para ubicación espacial del MIC, en relación con grupo etario y sexo. Se evaluó el MIC en todas las muestras (100 %). El MIC fue encontrado mayormente en el tercio medio mandibular (p <0,05). La media desde el MIC a la cortical lingual es de 5,25 mm ? 1,42 mm (derecho) y 5,24 mm ? 1,18 mm (izquierdo). La media desde el MIC a la cortical vestibular fue de 4,42 mm ? 1,29 mm (derecho) y 4,53 mm ? 1,24mm (izquierdo). La media entre centro del canal y reborde alveolar vestibular fue 18,89 mm ? 2,68mm (derecho) y 18,20 mm ? 3,06 mm (izquierdo), media desde centro del MIC al margen basal fue de 9,77 mm ? 1,93 (derecho) y 10,12 mm ? 1,92 mm (izquierdo). Se encontró mayor distribución del MIC en el tercio medio mandibular. Se identificó el MIC en el 100 % de las muestras a través de CBCT por lo que su uso como examen complementario debe ser considerado al planificar cirugías en el sector anterior mandibular.

SUMMARY: The objective of the study was to determine the morphology of the mandibular incisive canal (MIC) and its location using cone beam computed tomography (CBCT) in the population of Valdivia, Chile. Descriptive cross-sectional study. MIC was identified in the canine cross image in 83 quadrants. Age, gender, quadrants, length from buccal alveolar ridge of canine to MIC, lingual and buccal cortical of canine to MIC, mandibular base of canine to MIC, and location of MIC (lingual, middle and buccal third) were recorded. Measurements were recorded in millimeters. Independent sample Student-T test was performed to determine length variables and Chi-square test was performed to determine spatial location of MIC, in relation to age group and gender. MIC was evaluated in all samples (100 %). MIC was found mainly in the mandibular third quadrant (p < 0.05). The mean from the MIC to the lingual cortex is 5.25 mm ? 1.42 mm (right) and 5.24 mm ? 1.18 mm (left). The mean from the MIC to the buccal cortex was 4.42 ? 1.29 mm (right) and 4.53 mm ? 1.24 mm (left). The mean between the center of the canal and the buccal alveolar ridge was 18.89 mm ? 2.68mm (right) and 18.20 mm ? 3.06 mm (left), the mean from the center of the MIC to the basal edge was 9.77 mm ? 1.93 (right) and 10.12 mm ? 1.92 mm (left). A greater distribution of MIC was found in the mandibular third quadrant. MIC was identified in 100 % of the samples through CBCT, therefore, its use as a complementary examination should be considered when planning surgeries in the anterior mandibular area.

Conductas de riesgo para la salud en adolescentes escolarizados del municipio de Tabio, Colombia / Health-risk behaviors in school-based adolescents in Tabio, Colombia

RESUMEN Objetivos Identificar los comportamientos de riesgo para la salud y describir su relación con las características sociodemográficas en los adolescentes de un colegio del municipio de Tabio, provincia de Sabana Centro, Cundinamarca, Colombia. Metodología Estudio descriptivo y de corte transversal en población adolescente escolar de 14 a 19 años, durante el año 2018, elegidos por medio de muestreo por conveniencia. Se obtuvo información mediante el cuestionario en español de la herramienta RAAPS (Rapid Assessment for Adolescent Preventive Services), que evaluó los comportamientos de riesgo, previa firma de consentimiento y asentimiento informado. Se realizó análisis estadístico en el programa STATA versión 14.0. Resultados Se incluyó una muestra de 217 estudiantes, con edad promedio de 15,8 años (53% mujeres y 47% hombres). La mayoría de zona rural y estrato 2. Dentro de los comportamientos de riesgo detectados se destacan la falta de uso de cinturón de seguridad y casco en casi la mitad de los participantes, síntomas de tristeza en 37,3% (que afecta más a las mujeres), consumo de alcohol en el 45,2% y actividad sexual en el 30,9% (son más frecuentes en el grupo de 17 a 19 años y en el sexo masculino). Conclusión Los hallazgos confirman la presencia de comportamientos de riesgo para la salud en los adolescentes de la población estudiada, que deben ser intervenidos a través de estrategias preventivas efectivas y que alertan sobre la necesidad de implementar un sistema periódico de vigilancia.

ABSTRACT Objective to identify health-risk behavior and describe their correlation with sociodemo-graphic characteristics in a group of adolescents from a school located in Tabio, Sabana Centro, Cundinamarca. Methodology A descriptive and cross-sectional study was carried out in school adoles-cents from 14 to 19 years of age during 2018; chosen by convenience sampling. The information was collected using the Spanish version of the RAAPS questionnaire (Rapid assessment for preventive services for adolescents) that assesses risk behaviors, signing of informed consent and assent prior. The statistical analysis was performed in the STATA program, version 14.0. Results A sample of 217 students was included, the average age was 15.8 years, 53% were women and 47% were men, most of them from the rural area and socioeconomic status 2. Among the main risk behaviors were never wearing a belt of safety or helmet in almost half of the adolescents, symptoms of sadness in 37.3% with higher prevalence in women, alcohol consumption in 45.2% and sexual activity in 30.9%, both being more fre-quent in the group of 17 to 19 years old and male. Conclusion The results confirmed the presence of health risk behaviors in the adolescents of studied population, who must be intervened through effective preventive strategies and warn about the need to implement a periodic surveillance system.

Esophageal lichen planus

Abstract Lichen planus is a chronic inflammatory disease that affects the skin, mucous membranes, nails and scalp. Esophageal lichen planus is a rarely reported manifestation of lichen planus, presenting itself commonly in middle-aged women, with symptoms such as dysphagia. We report a case of esophageal lichen planus in a 54-year-old woman associated with oral, cutaneous and ungual lichen planus. Although lichen planus is a disorder well known by dermatologists, reports of esophageal lichen planus are rare in dermatologic literature. The esophageal lichen planus is little known and underdiagnosed, with a significant delay between the onset of symptoms and diagnosis.