Kyu-Rhim Chung; Seong-Hun Kim; Yoon-Ah Kook; HyeRan Choo
June 2008
World Journal of Orthodontics;2008, Vol. 9 Issue 2, p105
Academic Journal
Aim: To show the clinical application of surface-treated mini-implants (C-Implants) in managing an anterior torque control during en masse retraction of anterior dentition. Methods: Nickel-titanium archwire with reverse curve of Spee, which is directly engaged in the hole of C-Implants, and severe curve of Spee can be overlaid on anterior segmented archwires to generate anterior torque on the anterior dentition to resist lingual tipping during en masse retraction. This treatment mechanics is called the biocreative therapy type II technique. The characteristics and procedure of the type II technique for treating maximum anchorage using the C-Implants is shown with case reports of treated patients. The biomechanics and a comparison to the type I technique of this treatment are also described. Results: The authors show the clinical application of type II technique during anterior retraction on various cases, possible indications, and simplicity of the mechanics. Conclusion: Biocreative therapy, which implements partial-osseointegrated mini-implants, presents a novel therapeutic approach in orthodontics. A technique of intrusion overlay archwires for anterior torque control also simplifies the design of orthodontic appliances while eliminating unwanted side effects, such as vertical changes on posterior anchorage teeth during en masse retraction.


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