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Quintessence Publishing: Journals: ORTHODONTICS
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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Publication:
Winter 2006
Volume 7 , Issue 4

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A NEW APPROACH IN THE TREATMENT OF SKELETAL OPEN BITE: VERTICALLY ACTIVATED BITE BLOCK

Züleyha Mirzen Arat, DDS, PhD / F. Emel Sezer, DDS / Ays¸egül Dalkiran Arslan

Pages: 345–356
PMID: 17190227

This study examined the effects of the vertically activated bite block, a new appliance designed for maxillary molar intrusion in open bite malocclusion, on the dentofacial structures in 1 adolescent patient and 1 adult patient. The vertically activated bite block consists of 2 parts, the main block and an auxillary segment. The auxilliary segment is separated bilaterally from the main block in the posterior region and connected bilaterally to the main block in the palatal region by open jackscrews. Closing the jackscrews moves the auxiliary segment toward the palate, thereby inducing molar intrusion. The present study achieved a reduction in open bite, using the VABB through: (1) active intrusion of the maxillary molars; (2) control of posterior vertical alveolar development and/or compensatory eruption of the mandibular molars; (3) stimulation of anterior vertical alveolar development by restriction of the tongue; and (4) anterior repositioning of mandible. Achieving these dentoalveolar and skeletal changes are required treatment objectives in cases of skeletal open bite. As a result of attaining these objectives, the open bite was eliminated in 1 early growth and 1 late growth patient by 14 mm and 6 mm, respectively. World J Orthod 2006;7:345–356.

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