Insights into Chinese Orthodontic Expertise Reported at JAO Coverage of DGAO 2024

Latest Developments in Orthodontics from China


The Journal of Aligner Orthodontics (JAO) recently released a detailed report highlighting significant discussions from the 8th Congress of the German Society for Aligner Orthodontics (DGAO) held in November 2024 in Cologne, Germany. This report was particularly illuminating as it encompassed innovative techniques and clinical insights, especially from the renowned Professor Gang Shen. Leading the orthodontics division at Smartee Denti-Technology, Professor Shen shared his structured approach to the often challenging task of mandibular repositioning therapy, emphasizing its non-surgical success in addressing Class II skeletal discrepancies.

A Comprehensive Overview of Class II Malocclusions


Professor Shen initiated his keynote address by outlining his diagnostic framework for three-step malocclusion, a complex condition characterized by a retrusive mandible, increased facial convexity, excessive overbite, deep overbite, distinctive Spee curve, and a Class II molar relationship. The challenges associated with treating adult patients lodged in this predicament are notable, as orthognathic surgery is frequently suggested yet often declined by the patients, while conventional treatments like maxillary molar distalization or premolar extractions yield limited outcomes.

To bridge these challenges, Professor Shen proposed an orthopedic treatment model utilizing Smartee's S8-SGTB Clear Aligner System. His dual-phase treatment strategy commences with the repositioning of the mandible, achieved by employing vertical bite devices coupled with the guided advancement of the mandible using the S8-SGTB apparatus. Following this, aligners are applied to manage the intrusion of incisors and extrusion of molars, optimizing occlusal relationships. Remarkably, the forward placement of the mandible also stimulates adaptive bone remodeling at the posterior aspect of the condyle.

It's noteworthy that the vertical dental movements are facilitated through the aligner system, rather than being a direct result of the mandible advancement. Professor Shen clarified that the remolding of the temporomandibular joint (TMJ) remains biologically plausible even in adults, permitting effective repositioning beyond adolescence. He also presented a detailed four-step simulation protocol to ascertain and document the optimal mandibular advancement position:
1. Conducting an intraoral scan to capture the patient's dental anatomical structures.
2. Performing a repositioning simulation to determine the new jaw position.
3. Using wax registration to secure this position.
4. Finally, executing a scan of the posterior occlusion for the ultimate digital capture of the mandibular position.

It is vital to maintain a posterior clearance of 5 mm in the construction bite. The remarkable success of the Smartee GS System, evidenced by over 100,000 clinical applications, emphasizes its scalability, precision, and non-invasive treatment potential.

For those interested in exploring the pioneering Smartee technology for jaw repositioning more comprehensively or to review case studies, further details can be found on their website: www.smarteealigners.com. Overall, the session led by Professor Shen has significantly contributed to the discourse on effective malocclusion management within the orthodontic community, showcasing the potential for innovative, patient-friendly techniques.

JOA Orthodontics

Topics Health)

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