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KJO Korean Journal of Orthodontics

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eISSN 2005-372X
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Korean J Orthod

Published online October 28, 2020

Copyright © The Korean Association of Orthodontists.

Evaluation of strategic uprighting of the mandibular molars using an orthodontic miniplate and a nickel-titanium reverse curve arch wire: Preliminary cephalometric study

Jae-Hyun Parka*, HyeRan Choob*, Jin-Young Choic, Kyu-Rhim Chungd, Seong-Hun Kime

aGraduate student, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
bClinical Assistant Professor, Department of Plastic Surgery Stanford University School of Medicine, Lucile Packard Children’s Hospital, Palo Alto, CA, USA.
cClinical Fellow, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
dClinical Professor, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
eProfessor and Head, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.

Correspondence to:Seong-Hun Kim D.M.D., M.S.D., Ph.D.
Department of Orthodontics, Graduate School, Kyung Hee University, #1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
Telephone: 82-2-958-9392
Fax: 82-2-966-7160
E-mail address: bravortho@gmail.com

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives: To evaluate the overall treatment effects in terms of the amount of uprighting with the change of sagittal and vertical position of mandibular molars after applying an orthodontic miniplate with a nickel-titanium reverse curve arch wire (Biocreative Reverse Curve (BRC) system). Methods: Total 30 female patients (mean age, 25.99±8.96 years) were treated by the BRC system (mean BRC time, 10.3±4.07 months). An I-shape C-tube miniplate was placed at the labial aspect for the alveolar bone of the mandibular incisors. A .017x.025 NiTi reverse curve arch wire was engaged at the C-tube mini-plate anteriorly and the 1st and 2nd premolars and molars posteriorly in the mandibular arch. Pre- and post-BRC lateral cephalograms were analyzed. The paired t-test was used to analyze the treatment effects of BRC. Results: The mandibular 2nd molars were intrusive uprighted successfully by the BRC system. A distal uprighting with vertical dimension controlled was noted on the 1st molars when they remained engaged in the BRC and the distal ends of the arch wire were laid on the 2nd molars. In the mandibular 1st and 2nd premolars, a slight extrusion was observed. The changes in the mandibular incisors were unremarkable while the mandibular molar angulation improved significantly. The lower occlusal plane rotated counterclockwise (MPLOP: 1.13±2.60°). Conclusions: The BRC system can provide a very effective molar uprighting solution without compromising the position of the mandibular anterior teeth.

Keywords: Molar uprighting, C-tube miniplate, intrusion, reverse curved archwire, biocreative reverse curve, BRC.

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Korean J Orthod

Published online October 28, 2020

Copyright © The Korean Association of Orthodontists.

Evaluation of strategic uprighting of the mandibular molars using an orthodontic miniplate and a nickel-titanium reverse curve arch wire: Preliminary cephalometric study

Jae-Hyun Parka*, HyeRan Choob*, Jin-Young Choic, Kyu-Rhim Chungd, Seong-Hun Kime

aGraduate student, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
bClinical Assistant Professor, Department of Plastic Surgery Stanford University School of Medicine, Lucile Packard Children’s Hospital, Palo Alto, CA, USA.
cClinical Fellow, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
dClinical Professor, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.
eProfessor and Head, Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea.

Correspondence to:Seong-Hun Kim D.M.D., M.S.D., Ph.D.
Department of Orthodontics, Graduate School, Kyung Hee University, #1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
Telephone: 82-2-958-9392
Fax: 82-2-966-7160
E-mail address: bravortho@gmail.com

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives: To evaluate the overall treatment effects in terms of the amount of uprighting with the change of sagittal and vertical position of mandibular molars after applying an orthodontic miniplate with a nickel-titanium reverse curve arch wire (Biocreative Reverse Curve (BRC) system). Methods: Total 30 female patients (mean age, 25.99±8.96 years) were treated by the BRC system (mean BRC time, 10.3±4.07 months). An I-shape C-tube miniplate was placed at the labial aspect for the alveolar bone of the mandibular incisors. A .017x.025 NiTi reverse curve arch wire was engaged at the C-tube mini-plate anteriorly and the 1st and 2nd premolars and molars posteriorly in the mandibular arch. Pre- and post-BRC lateral cephalograms were analyzed. The paired t-test was used to analyze the treatment effects of BRC. Results: The mandibular 2nd molars were intrusive uprighted successfully by the BRC system. A distal uprighting with vertical dimension controlled was noted on the 1st molars when they remained engaged in the BRC and the distal ends of the arch wire were laid on the 2nd molars. In the mandibular 1st and 2nd premolars, a slight extrusion was observed. The changes in the mandibular incisors were unremarkable while the mandibular molar angulation improved significantly. The lower occlusal plane rotated counterclockwise (MPLOP: 1.13±2.60°). Conclusions: The BRC system can provide a very effective molar uprighting solution without compromising the position of the mandibular anterior teeth.

Keywords: Molar uprighting, C-tube miniplate, intrusion, reverse curved archwire, biocreative reverse curve, BRC.