A bstract Aim and objective Determine the benefits of low-level laser therapy (LLLT) as a complement to rapid maxillary expansion (RME), through a systematic review. Background Transversal maxillary compression is a common skeletal problem that can be treated with different devices. This RME technique consists of the separation and regeneration of the midpalatal suture. Low-level laser therapy has been suggested to be able to accelerate bone healing after trauma or bone defects. Review results Thirty-two publications were found by electronic search during July to August of 2019 on Medline (PubMed) and Google Scholar, using the terms “ Low-Level Laser ”, “LLLT ”, “ Rapid Maxillary Expansion ”, and “O steogenesis Distraction ”. Only 16 were used (2 systematic reviews, 6 articles on humans, and 8 on animals). Even though all the studies had different intervention protocols, they all revealed that LLLT has the effect of accelerating bone regeneration after RME. Conclusion The use of LLLT as a complement to RME has shown promising results with cellular biostimulation, promoting angiogenesis and bone regeneration of the midpalatal suture. Clinical significance This study provides scientific evidence of the benefits of using LLLT as a complement to RME during orthopedic and orthodontic treatments, accelerating bone regeneration and reducing the time of consolidation of the maxillary. How to cite this article Lai P-S, Fierro C, Bravo L, et al. Benefits of Using Low-level Laser Therapy in the Rapid Maxillary Expansion: A Systematic Review. Int J Clin Pediatr Dent 2021;14(S-1):S101–S106.

El objetivo de esta revisión de literatura es identificar los estudios de ortodoncia y ortopedia en modelos animales. Describiendo su metodología, analizando los resultados y comparando los diferentes estudios. El uso frecuente de animales de experimentación ha permitido el desarrollo de la biomedicina a lo largo de la historia de la humanidad. El modelo de estudio más utilizado en investigaciones de medicina y odontología con modelo animal, han sido las ratas. Los campos más estudiados son ortodoncia; interacción de los movimientos de ortodoncia con otros procesos biológicos o agentes que influyen como cirugías, toma de medicamentos o enfermedades. En cambio, en el área de ortopedia no ha presentado tantas investigaciones en modelo animal, por lo que podría ser un área a desarrollar en futuras investigaciones.