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Quintessence Publishing: Journals: ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Fall 2003
Volume 4 , Issue 3

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Orthopedic and Orthodontic Components of Class II, Division 1 Malocclusion Correction with Balters Bionator: A Cephalometric Study with Metallic Implants

Ana Cláudia Moreira Melo, DDS, MDS/Ary dos Santos-Pinto, DDS, MDS, PhD/Joel Claudio da Rosa Martins, DDS, MDS, PhD/Lídia Parsekian Martins, DDS, MDS, PhD/Maurício Tatsuei Sakima, DDS, MDS, PhD

Pages: 237–242

The bionator, introduced by Balters, is used in the treatment of Class II, Division 1 malocclusions when there is mandibular retrusion or decreased mandibular growth. The major controversy of this treatment technique is its precise effect. This investigation aims at developing data to improve understanding of the Balters bionator treatment. The study sample consisted of 16 patients; 8 patients in the control group, who received no treatment, and 8 patients treated with the Balters bionator. Both groups were followed for 1 year. Metallic implants were inserted in all patients, to serve as reference points for cephalometric tracing superimposition that, together with 25 traditional cephalometric measurements, generated data for the evaluation of the potential orthopedic and orthodontic effects of Class II malocclusion treatment with this appliance. The results demonstrated a maxillary growth restriction and a stimulus of mandibular growth, as well as a change in the direction of condylar growth. There was also a restriction of the mesial movement of the maxillary molars and verticalization of the maxillary incisors. In the mandibular arch, the Balters bionator increased the proclination of the incisors and had no effect on molar movement. World J Orthod 2003;4:237–242.

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