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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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Summer 2002
Volume 3 , Issue 2

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Distal Molar Movement with an Intra-arch Device Provided with the Onplant System for Absolute Anchorage

Lars Bondemark, DDS, Odont Dr, Ingalill Feldmann, DDS, Hartmut Feldmann, DDS

Pages: 117124

Aim: To demonstrate and evaluate molar distalization treatment with an intra-arch device provided with the Onplant system for absolute anchorage. Methods: Absolute anchorage was achieved using an Onplant placed subperiosteally in the palate to create osseointegration. The Onplant was, via an abutment, connected to a transpalatal bar that was bonded to the anchorage teeth. Two sectional arches were attached bilaterally to brackets and tubes on premolars and molars in the maxilla. A compressed open nickel titanium coil was inserted between the second premolar and the first molar to create molar distalization. The method is described and illustrated with a case report showing the nonextraction treatment of a patient with a Class II malocclusion and space deficiency in the maxilla. Results and Conclusion: It was demonstrated that an intra-arch device provided with an Onplant system for absolute anchorage is suitable for maxillary molar distalization. The Class II molar relationship was transformed to a Class I relationship during 4.5 months of treatment, and the amount of simultaneous distal movement of maxillary first and second molars was 2.5 mm. No anchorage loss could be found, ie, there was no forward movement of the anterior teeth. The patient had no problems with the surgical placement of the Onplant system. World J Orthod 2002;3:117124.

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