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Combined use of miniscrews and continuous arch for intrusive root movement of incisors in Class II division 2 with gummy smile

Authors
 Sung-Jin Kim  ;  Jin-Wook Kim  ;  Tae-Hyun Choi  ;  Kee-Joon Lee 
Citation
 Angle Orthodontist, Vol.84(5) : 910-918, 2014 
Journal Title
 Angle Orthodontist 
ISSN
 0003-3219 
Issue Date
2014
Abstract
Adequate intrusion and torque control of the retroclined maxillary incisors are critical for the treatment of Class II division 2 (div2) malocclusion. In addition, anterior retraction via lingual root movement can be challenging. This case report demonstrates a combined use of miniscrews and continuous arch with additional torque for intrusion, retraction, and torque control of maxillary incisors in the Class II div2 with gummy smile. A 20-year-old woman presented with multiple issues, including impacted canine, lip protrusion, prolonged retained mandibular primary molar, and two missing maxillary premolars. In order to improve her facial profile and eliminate the need for prosthetic work, the mandibular primary molar and contralateral premolar were extracted. Two miniscrews were placed at the maxillary buccal alveolar bone to apply the posterosuperior force for retraction of anterior teeth, with additional labial crown torque on the arch wire. The results were the intrusion (4 mm) and lingual root movement (17°) of the maxillary incisors without anchorage loss of maxillary molars, flattening of the Curve of Spee, and Class I molar relation that were maintained after 50 months of retention period. The combined use of miniscrews and continuous arch could be a reliable and effective treatment modality for torque control and intrusion of retroclined maxillary incisors in the Class II div2 patient.
Full Text
http://www.angle.org/doi/full/10.2319/080713-587.1
DOI
10.2319/080713-587.1
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Jin(김성진) ORCID logo https://orcid.org/0000-0003-4115-0403
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
Choi, Tae Hyun(최태현)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/99596
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