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 1^st and 2^nd 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 2^nd molars were intrusive uprighted successfully by the BRC system. A distal uprighting with vertical dimension controlled was noted on the 1^st molars when they remained engaged in the BRC and the distal ends of the arch wire were laid on the 2^nd molars. In the mandibular 1^st and 2^nd 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.