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Objective: To evaluate the results of a finishing protocol implemented in patients treated in the Orthodontics graduate program at Universidad de Antioquia. Evaluation was carried out by means of the criteria set by the Objective Grading System (OGS) of the American Board of Orthodontics (ABO). Methods: Cast models and panoramic radiographs of 34 patients were evaluated. The intervention group (IG) consisted of 17 patients (19.88 ± 4.4 years old) treated under a finishing protocol. This protocol included training in finishing, application of a finishing guide, brackets repositioning and patient's follow-up. Results of the IG were compared to a control group of 17 patients (21.88 ± 7.0 years old) selected by stratified randomization without finishing intervention (CG). Results: The scores for both CG and IG were 38.00 ± 9.0 and 31.41 ± 9.6 (p = 0.048), respectively. The score improved significantly in the IG group, mainly regarding marginal ridges (CG: 5.59 ± 2.2; IG: 3.65 ± 1.8) (p = 0.009) and root angulation (CG: 7.59 ± 2.8; IG: 4.88 ± 2.6) (p = 0.007). Criteria that did not improve, but had the highest scores were: alignment (CG: 6.35 ± 2.7; IG: 6.82 ± 2.8) (p = 0.62) and buccolingual inclination (CG: 3.6 ± 5.88; IG: 5.29 ± 3.9) (p = 0.65). Conclusions: Standardization and implementation of a finishing protocol contributed to improve clinical performance in the Orthodontics graduate program, as expressed by occlusal outcomes. Greater emphasis should be given on the finishing phase to achieve lower scores in the ABO grading system.

Introducción: el objetivo de esta investigación fue estudiar las características de los estadios de maduración sexual y esquelética en un grupo de niños de Medellín. Métodos: estudio descriptivo longitudinal prospectivo. Se observaron 33 pacientes, 18 hombresy 15 mujeres, entre los 8 y 13 años; sanos, evaluados con parámetros de maduración esquelética, según Hägg y Taranger; de maduración sexual, según Tanner, y medidas antropométricas de talla y peso. Se realizaron mediciones cada seis meses durante treinta meses. Resultados: se encontraron asociaciones estadísticamente significativas entre la maduración esquelética y la sexual, con la edad, el peso  la talla; dimorfismo sexual con respecto a la edad de iniciación de la pubertad. Los incrementos de talla y peso del periodo inmediatamente anterior al inicio de la pubertad fueron iguales o mayores a los registrados en algunas etapas del periodo puberal evaluado. Conclusiones: el desarrollo esquelético, representado por los incrementos en talla y peso en el periodo prepuberal, es semejante a los del periodo puberal evaluado. Estas observaciones sustentan la pertinencia de instaurar la terapia ortopédica en un periodo anterior al puberal. Sin embargo, dadas las características de la muestra, se recomienda validar estos resultados con una muestra más representativaDOI: http://dx.doi.org/10.16925/od.v10i18.719

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Introduction. The differential management of anchorage and the acceleration of tooth movement are some of the current greatest challenges for orthodontists. Diverse techniques and devices to reinforce anchorage and increase the rate of tooth movement have been proposed. Whether micro-osteoperforations (MOPs) can be used for both purposes is currently investigated. Objectives. To propose and describe a new technique for biological anchorage, which involves six MOPs performed every four weeks, and to present its results in a clinical case of upper premolar extraction. Intervention. In a dental class II patient who met the selection criteria, three MOPs both on the buccal and palatine sides on the intervention side were performed on the extraction area following the protocol described. No MOPs were performed on the control side. The allocation of the intervention was randomised. The MOPs were performed three times at an interval of four weeks. A 0.019 × 0.025 -inch stainless steel wire was activated with calibrated NiTi springs. The three-dimensional movement of the first molars and upper canines was evaluated. In addition, the comfort, periodontal status, and canine root resorption of the patient were evaluated. Results. Clinical and radiographic results suggest that the MOPs had a positive effect in reducing the loss of biological anchorage of the posterior sector and in the rate of canine tooth movement, without damaging changes in the soft and hard tissues. Conclusion. The proposed protocol involving six MOPs every four weeks improved the behaviour of biological anchorage and increased distalization on the intervention side in this clinical case.

Introducción: Este estudio observacional de corte transversal fue  realizado con el fin de determinar el tiempo de tratamiento y los factores que pueden afectarlo en los pacientes finalizados en el programa de posgrado de ortodoncia de la Universidad de Antioquia. Métodos: Los datos fueron obtenidos de las historias clínicas, radiografías panorámicas y modelos finales de 40 pacientes (21 mujeres y 19 hombres) con edad promedio de  15.97 años (± 5.79), que cumplieron los criterios de selección. Se estudiaron variables administrativas como  número de citas cumplidas en total, numero de citas cumplidas por año de tratamiento, numero de citas incumplidas en total,  numero de meses  totales de tratamiento, numero de meses efectivos de tratamiento, número de docentes, número de residentes que atendieron a los pacientes y porcentaje de planeación de cita y variables clínicas como edad, complejidad de la maloclusión, calidad de la finalización del tratamiento, exodoncias y numero de reparaciones. Resultados: Se encontró un  tiempo promedio de tratamiento de 55.5 meses (± 22.2). El tiempo de tratamiento en los pacientes con exodoncias fue significativamente mayor (p=0.0231) comparado con los que no se les realizaron exodoncias. Un modelo de regresión lineal múltiple explico el 59% de la variabilidad e identifico cuatro variables significativas, dos administrativas (número de citas incumplidas y número de docentes) y dos clínicas (número de reparaciones y calidad de finalización). Conclusiones: Algunos factores administrativos y clínicos afectan el tiempo de tratamiento de manera significativa y el alargar excesivamente el tiempo de tratamiento, puede empeorar los resultados clínicos estáticos obtenidos.

Aim The aim of the present study was to establish the relationship between lower facial third and smile type in silent mixed‐dentition patients. Methods This cross‐sectional study, approved by the ethics committee, was conducted in a population of 2760 children, from which a convenient sample of 198 was included: 75 with gingival smile (GS) and 123 without GS (1:1.64). Clinical examination and videos were taken. Occlusal relation, overjet (OJ), overbite (OB), superior lip length at rest, superior lip length while smiling (SLLS), lower facial third height (LFTH), mid‐facial third height (MFTH), clinical crown length, and lip lift ability (LLA) were measured by two calibrated examiners (intraclass correlation coefficient: ≥.95). A normality test and demographic and bivariate analyses were undertaken. A non‐paired Student's t test was carried out in order to observe statistically‐significant differences between variables. Results There were no differences between sexes or associations between LFTH and GS. Statistically‐significant differences (P < .05) in MFTH, SLLS, LLA, OJ, and OB were found. A logistic regression model showed that the sum of LLA (odds ratio [OR]: .65, 95% confidence intervals [CI]: .50,.83]) and OB (OR: .88, 95% CI: .82, .93]) were GS predictive factors in 81.3% of cases. Conclusions OB and LLA are GS predictive factors in prepubertal participants. There is no relation between LFTH and GS.

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