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2015 Apr-Jun; Vol 6, No 2:e2 |
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Stability after Cleft Maxillary Distraction Osteogenesis or Conventional Orthognathic Surgery J Oral Maxillofac Res 2015;6(2):e2 doi:10.5037/jomr.2015.6202 |
Stability after Cleft Maxillary Distraction Osteogenesis or Conventional Orthognathic Surgery
1Department of Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark.
2Private practice.
Corresponding Author:
Department of Oral and Maxillofacial Surgery
Aarhus University Hospital
Nørrebrogade 44, 8000 Århus C, Aarhus
Denmark
Phone: 004589492970
Fax: 004589492930
E-mail: krisae@rm.dk
ABSTRACT
Objectives: To compare stability of maxillary advancements in patients with cleft lip and palate following distraction osteogenesis or orthognathic surgery.
Material and Methods: Inclusion criteria: 1) cleft lip and palate, 2) advancement > 8 mm. Eleven patients comprised the distraction osteogenesis group (DOG). Seven patients comprised the orthognathic treatment group (CONVG). Skeletal and soft tissue points were traced on lateral cephalograms: T1 (preoperatively), T2 (after surgery), T3 (follow-up). Group differences were analyzed using Students t-test.
Results: At T1-T2, advancement of 6.98 mm (P = 0.002) was observed in DOG. Horizontal overjet increased 11.62 mm (P = 0.001). A point-nasion-B point (ANB) angle increased 8.82° (P = 0.001). Aesthetic plane to upper lip was reduced 5.44 mm (P = 0.017) and the naso-labial angle increased 16.6° (P = 0.001). Vertical overbite (VOB) increased 2.27 mm (P = 0.021). In T2-T3, no significant changes were observed in DOG. In T1-T2, horizontal overjet increased 8.45 mm (P = 0.02). The ANB angle, 9.33° (P = 0.009) in CONVG. At T2-T3, VOB increased, 2.35 mm (P = 0.046), and the ANB angle reduced, 3.83° (P = 0.003). In T2-T3, no parameters changed in CONVG.
At follow-up (T3), VOB increased in CONVG compared with DOG, (P = 0.01). Vertical position of A point differed between the groups (P = 0.04). No significant intergroup differences between soft tissue parameters occurred.
Conclusions: Distraction osteogenesis resulted in a stable position of the maxilla and movement upwards in vertical plane, however in case of orthognathic treatment sagittal relapse and a continued postoperatively downward movement was registered.
J Oral Maxillofac Res 2015;6(2):e2
doi: 10.5037/jomr.2015.6202
Accepted for publication: 30 January 2015
Keywords: cleft palate; distraction osteogenesis; orthognathic surgery.
To cite this article: Stability after Cleft Maxillary Distraction Osteogenesis or Conventional Orthognathic Surgery. J Oral Maxillofac Res 2015;6(2):e2 URL: http://www.ejomr.org/JOMR/archives/2015/2/e2/v6n2e2ht.htm |
Received: 11 December 2014 | Accepted: 30 January 2015 | Published: 30 June 2015
Copyright: © The Author(s). Published by JOMR under CC BY-NC-ND 3.0 licence, 2015.