TY - JOUR
T1 - Combined use of miniscrews and continuous arch for intrusive root movement of incisors in Class II division 2 with gummy smile
AU - Kim, Sung Jin
AU - Kim, Jin Wook
AU - Choi, Tae Hyun
AU - Lee, Kee Joon
N1 - Publisher Copyright:
© 2014 by The EH Angle Education and Research Foundation, Inc.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2014/9/1
Y1 - 2014/9/1
N2 - 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 (17u) 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 ofretroclined maxillary incisors in the Class II div2 patient.
AB - 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 (17u) 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 ofretroclined maxillary incisors in the Class II div2 patient.
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U2 - 10.2319/080713-587.1
DO - 10.2319/080713-587.1
M3 - Article
C2 - 24512532
AN - SCOPUS:84907010664
VL - 84
SP - 910
EP - 918
JO - Angle Orthodontist
JF - Angle Orthodontist
SN - 0003-3219
IS - 5
ER -