Sichuan University Seeks $215,000 Licensing Deal for Novel Invisible Orthodontic Technology for Molar Distalization
Recently, the Institute of Scientific and Technological Development at Sichuan University released a public notice on the transfer of scientific and technological achievements, proposing to transfer an invention patent titled “Orthodontic Method and Device for Distalizing Molars Suitable for Clear Aligner Therapy.” The patent is intended to be commercialized through a patent license agreement, with a transaction price of RMB 1.5 million.
This patent is the result of in-depth research and development by a team from Sichuan University, including Long Hu, Pu Lingling, Liu Lu, Zhou Jing, and other R&D personnel. The team members span multiple fields, such as clinical orthodontics, materials engineering, and digital design. Core developers, including expert Lai Wenli, have long been engaged in clinical practice and scientific research on the correction of malocclusion. They possess profound theoretical knowledge and extensive clinical experience, enabling them to accurately address clinical pain points such as molar distalization.
This patent relates to a method and device specifically designed for distalizing molars in clear aligner therapy. Its core innovation lies in determining the centers of resistance of the target molars on both sides of the maxilla and applying orthodontic forces parallel to the dental arch at this horizontal plane, thereby achieving bodily parallel distal movement of the molars. The orthodontic device primarily consists of four components: an arched palatal bar connecting the molars on both sides, anchorage implanted in the mid-palatal suture of the maxilla (such as mini-implants), distal extension arms extending in the distal direction, and force-delivering elements connecting the two (such as coil springs or elastic bands).
This patent proposes a solution to address issues such as dental crowding and protrusion caused by the mesial movement of molars in orthodontic clinical practice. Previous treatment approaches for distalizing molars (such as headgear with extraoral bows, pendulum appliances, or fixed appliances) have their respective limitations: the former relies on patient compliance, is prone to loss of anchorage, and may lead to wear of anterior teeth, mesial movement of anchor teeth, and distal tipping of molars; while the latter improves compliance, part of the space gained for molars may result from the mesial movement of anchor teeth, making it still difficult to completely avoid tipping movement of molars, thereby increasing the risk of post-treatment relapse.
Against this backdrop, the key technical aspects of this patent are primarily reflected in two areas: First, regarding force control, force is applied at the height of the center of resistance of the molars, with an arched palatal arch connecting the bilateral molars. This ensures that the direction of the orthodontic force is parallel to the dental arch, aiming to achieve bodily translation of the molars rather than tipping movement, thereby reducing the risk of relapse at a mechanistic level. Second, the anchorage design utilizes mini-implants as skeletal anchorage, concentrating the force for molar distalization on the implants. This maximizes the reduction of adverse effects such as labial inclination and wear of the anterior teeth that may result from loss of anterior anchorage, providing a biomechanical foundation for more efficient and controlled molar distalization.
The digital orthodontics sector in which this patent operates is highly competitive. Numerous industry players are continuously exploring a digital closed-loop system that spans diagnosis, treatment planning, production, and course monitoring.
According to publicly available corporate information and industry reports, leading companies are demonstrating a trend toward intelligence and precision in their product and technological roadmaps. Smartee (Zhengya) states that its R&D system is underpinned by “over 1,000 patents,” with a focus on integrating biomechanical research with AI-driven modeling. Its product portfolio includes mandibular repositioning technology, the GS/GE series, and specialized lines for children (Smartee Kinder) and adolescents (Smartee Teen), covering both domestic and international markets, which reflects its continued investment in niche application scenarios.
Meanwhile, Align Technology (Invisalign) continues to intensify its investments in early intervention and digital platforms. According to the company’s public disclosures, its product pipeline now includes a mandibular advancement clear aligner system integrated with solid bite blocks for treating Class II skeletal discrepancies in children and adolescents, as well as the Invisalign™ 3D-printed custom expander, which offers a solution for skeletal expansion.
Furthermore, the “MORE Dental Comfortable Orthodontic System” released by MORE Dental represents another significant market trend: enhancing the treatment experience. This system integrates modules such as clinical behavioral and psychological assessment, digital pathway simulation, pain pre-management, and standardized doctor-patient communication mechanisms, with a focus on improving patient comfort throughout the entire cycle from initial consultation to the completion of treatment.