Oral biomechanics, an important fundamental discipline within orthodontics, continually evolves and expands upon traditional orthodontic mechanical systems. As advancements in new orthodontic devices and techniques persist, interest within the field progressively focuses on the investigation of biomechanical effects of various orthodontic systems. Furthermore, relentless optimization, innovation, and breakthroughs in oral biomechanics technology offer an essential pathway to simulate and understand the biomechanical impacts within orthodontic treatment more accurately. This review primarily summarized the research development from the recent years across three principal orthodontic treatment systems: fixed orthodontics, invisible orthodontics, and orthopedic treatment, including orthodontic concepts, emergence of new technologies, and implementations of novel biomechanical techniques within these systems.