[Comparison of the outcome of orthodontic dental movement using aligners versus fixed orthodontics: a review]. / Comparación del resultado del movimiento dentario ortodóncico usando alineadores versus ortodoncia fija: una revisión.

Introduction: The aligners have become a preferred alternative in terms of orthodontic treatment, surpassing the choice of conventional brackets, due to the comfort and aesthetics that the aligners represent, however, the final result with this system continues to be a controversial issue. The objective of this review was to verify the effectiveness of the treatment completed with aligners versus conventional brackets. Materials and methods: An exhaustive search was carried out in the PubMed, ScienceDirect, Scopus and Embase databases up to the date of January 5, 2023, including comparative studies that evaluated the final result and treatment time of the aligners compared to conventional braces. Two researchers carefully selected the articles evaluated and analyzed different key topics on the subject. Results: In this study, 8 articles were included, according to the studies, the vast majority did not find significant differences in completion between the compared groups. In addition to this, the treatment time in 3 articles was faster with aligners, in 3 articles it was faster with conventional brackets, and in one article no significant difference was found, so it is not yet established whether a system is faster than the other. Conclusions: Both aligners and conventional fixed orthodontics had good results at the end of orthodontic treatment and presented a similar treatment time, however, the majority of treated cases belonged to malocclusions of medium to low complexity, so these cannot be generalized. findings to all malocclusions.

Success rate of infrazygomatic miniscrews considering their design and insertion techniques. A review.

Miniscrews offer the possibility of performing dental movements, minimizing unwanted side effects and enhancing effectiveness. Extra-alveolar miniscrews are ideal as they provide excellent primary stability and avoid anatomical structures. However, in some cases the primary stability is lost before achieving the success of the mechanics used and thus, the most likely causes of failure should be determined. The purpose of this review was to analyze the success rate of infrazygomatic miniscrews, considering their design and the insertion techniques used. Data collection of this literature review was carried out by searching PubMed, Wiley, Google Scholar sites, SCIELO, Elsevier and Dialnet for publication made from 2003 to June 2022. The search was carried out on June 10th, 2022 and the following keywords were used; infrazygomatic crest, miniscrews, anchorage and stability. Different topics were analyzed and discussed highlighting their clinical relevance. After analyzing the 798 articles, 566 were excluded. The remaining articles were re-analyzed and 153 articles were excluded for the title or abstract and 33 articles were excluded for the methodology. Finally, 46 items remained. After thoroughly analyzing all the articles included, this study concluded that the alloy of the miniscrew (stainless steel or titanium), perforation of the maxillary sinus and the placement area (adhered mucosa or mobile mucosa) do not influence the survival of the miniscrew. The evidence also indicates that the percentage of failure is lower in infrazygomatic compared to intraradicular miniscrews. Orthodontists can confidently and safely include infrazygomatic miniscrew in different orthodontic procedures.

Los minitornillos ofrecen la posibilidad de realizar movimientos dentales, lo que minimiza los efectos secundarios no deseados y potencia la eficacia. Los minitornillos extraalveolares son ideales ya que proporcionan una excelente estabilidad primaria y evitan estructuras anatómicas. Sin embargo, en algunos casos se pierde la estabilidad primaria antes de lograr el éxito de la mecánica utilizada y, por lo tanto, se deben determinar las causas más probables de la falla. El propósito de esta revisión fue analizar la tasa de éxito de los minitornillos infracigomáticos, considerando su diseño y las técnicas de inserción utilizadas. La recolección de datos de esta revisión bibliográfica se realizó mediante la búsqueda en PubMed, Wiley, sitios de Google Scholar, SciELO, Elsevier y Dialnet para publicaciones realizadas desde 2003 hasta junio de 2022. La búsqueda se realizó el 10 de junio de 2022 y se utilizaron las siguientes palabras clave: cresta infracigomática, minitornillos, anclaje y estabilidad. Se analizaron y discutieron diferentes temas destacando su relevancia clínica. Tras analizar los 798 artículos, se excluyeron 566. Los restantes fueron reanalizados y 153 resultaron excluidos por el título o resumen, y 33 por la metodología. Finalmente, quedaron 46 artículos. Tras analizar exhaustivamente todos los artículos incluidos, este estudio concluye que la aleación del minitornillo (acero inoxidable o titanio), la perforación del seno maxilar y la zona de colocación (mucosa adherida o mucosa móvil) no influyen en la supervivencia del minitornillo. La evidencia también indica que el porcentaje de fracaso es menor en los minitornillos infracigomáticos en comparación con los intrarradiculares. Los ortodoncistas pueden incluir con confianza y seguridad minitornillos infracigomáticos en diferentes procedimientos de ortodoncia.