Maxillary protraction using customized mini-plates for anchorage in an adolescent girl with skeletal Class III malocclusion

Shuran Liang; Xianju Xie; Fan Wang; Qiao Chang; Hongmei Wang; Yuxing Bai

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자료유형: 학술저널

저자정보: Shuran Liang (Capital Medical University) Xianju Xie (Capital Medical University) Fan Wang (Capital Medical University) Qiao Chang (Capital Medical University) Hongmei Wang (Capital Medical University) Yuxing Bai (Capital Medical University)

저널정보: 대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제50권 제5호

발행연도: 2020.9

수록면: 346 - 355 (10page)

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The treatment of skeletal Class III malocclusion in adolescents is challenging. Maxillary protraction, particularly that using bone anchorage, has been proven to be an effective method for the stimulation of maxillary growth. However, the conventional procedure, which involves the surgical implantation of mini-plates, is traumatic and associated with a high risk. Three-dimensional (3D) digital technology offers the possibility of individualized treatment. Customized miniplates can be designed according to the shape of the maxillary surface and the positions of the roots on cone-beam computed tomography scans; this reduces both the surgical risk and patient trauma. Here we report a case involving a 12-year-old adolescent girl with skeletal Class III malocclusion and midface deficiency that was treated in two phases. In phase 1, rapid maxillary expansion and protraction were performed using 3D-printed mini-plates for anchorage. The mini-plates exhibited better adaptation to the bone contour, and titanium screw implantation was safer because of the customized design. The orthopedic force applied to each mini-plate was approximately 400–500 g, and the plates remained stable during the maxillary protraction process, which exhibited efficacious orthopedic effects and significantly improved the facial profile and esthetics. In phase 2, fixed appliances were used for alignment and leveling of the maxillary and mandibular dentitions. The complete two-phase treatment lasted for 24 months. After 48 months of retention, the treatment outcomes remained stable.

#Face mask #Implant design #Customized mini-plates #Three-dimensional printing

참고문헌 (20)

참고문헌 신청

Allwright WC / 1964 / A survey of handicapping dentofacial anomalies among Chinese in Hong Kong / Int Dent J 14:505~519

Guyer EC / 1986 / Components of class III malocclusion in juveniles and adolescents / Angle Orthod 56:7~30

Kim JH / 1999 / The effectiveness of protraction face mask therapy : a meta-analysis / Am J Orthod Dentofacial Orthop 115:675~685

De Clerck HJ / 2009 / Orthopedic traction of the maxilla with miniplates : a new perspective for treatment of midface deficiency / J Oral Maxillofac Surg 67:2123~2129

국윤아 / 2015 / New approach of maxillary protraction using modified C-palatal plates in Class III patients / 대한치과교정학회지 45(4):209~214

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