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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 2007
Volume 8 , Issue 2

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Posterior Impaction with Orthodontic Miniscrews for Open-bite Closure and Improvement of Facial Profile

Neal D. Kravitz, DMD / Budi Kusnoto, DDS, MS

Pages: 157166
PMID: 17580510

Skeletal anterior open bite is often caused by posterior dentoalveolar excess and downward and backward mandibular rotation. Orthodontic miniscrews can successfully impact the posterior dentition, allowing for open-bite correction through upward and forward mandibular autorotation. An Asian male, 27 years of age, with a Class II skeletal relationship, dolichocephalic facial type, high mandibular plane angle, 4.0-mm anterior open bite, and convex soft-tissue profile was treated with 4 dentoalveolar orthodontic miniscrews. The maxillary first and second molars were impacted 1.4 mm, resulting in open-bite closure, 2.1 degrees of upward and forward mandibular autorotation, 2.0-mm advancement of pogonion, 3.5-degree reduction in soft-tissue facial convexity, and 2.6-mm increase in anteroposterior pharyngeal dimension on the lateral cephalogram. This case report demonstrates successful treatment with orthodontic miniscrews in open-bite closure with Class II correction, without extraction or surgically positioned miniplates. Miniscrew-supported posterior impaction and mandibular autorotation may become a viable treatment alternative to surgery in patients desiring improvement in their excessive dentofacial vertical dimension and facial esthetics. World J Orthod 2007;8:157166.

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