Comparative evaluation of miniscrew and orthognathic surgery in treatment of skeletal open bite in adults

ZHAO   Hong; BU  Ya-Ping; MA   Yan; ZHENG  Chun-Xiu; GU  Xiao-Ming; WANG  Xiao-Kun

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Medical Journal of the Chinese People Armed Police Forces ›› 2012, Vol. 23 ›› Issue (12) : 1026-1030.

Comparative evaluation of miniscrew and orthognathic surgery in treatment of skeletal open bite in adults

ZHAO Hong¹,BU Yaping¹,MA Yan¹,ZHENG Chunxiu¹,GU Xiaoming¹,WANG Xiaokun²

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Abstract

Objective To compare the treatment results in patients with skeletal open bite treated with molar intrusion by using miniscrew anchorage and orthognathic surgery. Methods Twenty-five patients with skeletal open bite were treated either by miniscrew anchorage (n=14) or LeFortⅠosteotomy combined with sagittal split ramus osteotomy(SSRO) (n=11). Self -drilling miniscrew implants were inserted into the buccal alveolar bone between maxillary molars and mandibular molars. Palatal and lingual arches were used respectively. 150 g force each side was added to miniscrew to intrude posterior teeth. Pretreatment and posttreatment lateral cephalograms were measured and compared. Results Skeletal open bite malocclusion in 25 patients were corrected effectively. There was no significant difference between miniscrew anchorage and orthognathic surgery, with increased overbites of 6.6mm and 7.2 mm, respectively. Miniscrew was more effective than orthognathic surgery in intruding posterior teeth. U6-PP (1.8 mm，0.2 mm，P<0.01) and L6-MP (1.2 mm，0.3 mm，P<0.05) were intruded significantly. Orthognathic surgery was more effective than miniscrew anchorage in reducing vertical dimension. The MP/SN(6.3°，3.3°，P<0.01)，N-Me (3.8 mm，1.8 mm，P<0.05), ANS-Me (3.9 mm，1.6 mm，P<0.05) and Gn-TH (2.8 mm，0.9 mm，P<0.05) were decreased significantly. Conclusion Self-drilling minisrcew implant can be used as an efficient method to control vertical anchorage and correct skeletal open bite malocclusion effectively through absolute intrusion of posterior dental alveoli.

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skeletal open bite / miniscrew anchorage / orthognathic surgery

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ZHAO Hong,BU Yaping,MA Yan,ZHENG Chunxiu,GU Xiaoming,WANG Xiaokun. Comparative evaluation of miniscrew and orthognathic surgery in treatment of skeletal open bite in adults[J]. Medical Journal of the Chinese People Armed Police Forces. 2012, 23(12): 1026-1030

References

［1］ Proffit W R, Fields H W, Ackerman J L, et al. Contemporary orthodontics［M］. 3 ed. St Louis: CV Mosby, 2000:231.
［2］ Buschang P H, Sankey W, English J D. Ealy treatment of hyperdivergent open-bite malocclusions［J］. Semin Orthod, 2002,8(3):130-140.
［3］ Keles A, Erverdi N, Sezen S. Bodily distalization of molars with absolute anchorage［J］. Angle Orthod, 2003,73(4):471-482.
［4］ Block M S, Hoffman D R. A new device for absolute anchorage for orthodonics［J］. Am J Orthod Dentofacial Orthop, 1995,107(3):251-258.
［5］ Costa A, Raffaini M, Melsen B. Miniscrews as orthodontic anchorage: a preliminary report［J］. Int J Adult Orthod Orthognath Surg, 1998,13(2):201-209.
［6］ Sugawara J, Daimaruya T, Umemori M, et al. Distal movement of mandibular molars in adult patients with the skeletal anchorage system［J］. Am J Orthod Dentofacial Orthop, 2004,125(2):130-138.
［7］ Chunlei X, Xianglong Z, Xing W. Miniscrew anchorage in skeletal anterior open-bite treatment［J］. Angle Orthod, 2007,77(1):47-56.
［8］ Shingo K, Yuichi S, Nagato T, et al. Treatment of severe anterior open bite with skeletal anchorage in adults: Comparison with orthognathic surgery outcomes［J］. Am J Orthod Dentofacial Orthop, 2007, 132(5):599-605.
［9］ Christopher D, Carla A, Michael M, et al. Stability of open bite correction with saggital split osteotomy and closing rotation of the mandible［J］. J Oral Maxillofac Surg,2010,68(1):149-159.
［10］ Kim Y H, Han U K, Lim D D, et al. Stability of anterior openbite correction with multiloop edgewise therapy: a cephalometric follow-up study［J］. Am J Orthod Dentofacial Orthop, 2000, 118(1):43-54.
［11］ Umemori M, Sugawara J, Mitani H. Skeletal anchorage system for open-bite correction［J］. Am J Orthod Dentofacial Orthop, 1999, 115(2):166-174.
［12］ Reyneke J P, Ferretti G. Anterior open bite correction by Le Fort Ⅰor bilateral sagittal split osteotomy［J］. Oral Maxillofac Surg Clin North Am,2007,19(3):321-328.[ZK)]
(2012-08-13