Journal Article

Skeletal and dento‐alveolar stability after surgical‐orthodontic treatment of anterior open bite: a retrospective study

Katleen Swinnen, Constantinus Politis, Guy Willems, Isabelle De Bruyne, Steffen Fieuws, Kristin Heidbuchel, Ria van Erum, An Verdonck and Carine Carels

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 23, issue 5, pages 547-557
Published in print October 2001 | ISSN: 0141-5387
Published online October 2001 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/23.5.547
Skeletal and dento‐alveolar stability after surgical‐orthodontic treatment of anterior open bite: a retrospective study

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The aim of this investigation was to assess skeletal and dento‐alveolar stability after surgical‐orthodontic correction of skeletal anterior open bite treated by maxillary intrusion (group A) versus extrusion (group B). The cephalometric records of 49 adult anterior open bite patients (group A: n = 38, group B: n = 11), treated by the same maxillofacial surgeon, were examined at different timepoints, i.e. at the start of the orthodontic treatment (T1), before surgery (T2), immediately after surgery (T3), early post‐operatively (±20 weeks, T4) and one year post‐operatively (T5). A bimaxillary operation was performed in 31 of the patients in group A and in six in group B. Rigid internal fixation was standard. If maxillary expansion was necessary, surgically assisted rapid palatal expansion (SRPE) was performed at least 9 months before the Le Fort I osteotomy. Forty‐five patients received combined surgical and orthodontic treatment.

The surgical open bite reduction (A, mean 3.9 mm;B, mean 7.7 mm) and the increase of overbite (A, mean 2.4 mm;B, mean 2.7 mm), remained stable one year post‐operatively. SNA (T2–T3), showed a high tendency for relapse. The clockwise rotation of the palatal plane (1.7 degrees;T2–T3), relapsed completely within the first post‐operative year. Anterior facial height reduction (A, mean −5.5 mm;B, mean −0.8 mm) occurred at the time of surgery.

It can be concluded that open bite patients, treated by posterior Le Fort I impaction as well as with anterior extrusion, with or without an additional bilateral sagittal split osteotomy (BSSO), one year post‐surgery, exhibit relatively good clinical dental and skeletal stability.

Journal Article.  0 words. 

Subjects: Restorative Dentistry and Orthodontics

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