Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (41): 7317-7322.doi: 10.3969/j.issn.2095-4344.2013.41.020

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Rapid maxillary expansion combined with fixed orthodontics

Chen Wei-ru, Wang Pei-jun   

  1. Department of Orthodontics, the Second Affiliated Hospital of Harbin Medical University, Harbin  150086, Heilongjiang Province, China
  • Received:2013-03-05 Revised:2013-06-27 Online:2013-10-08 Published:2013-11-01
  • Contact: Wang Pei-jun, Professor, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China hydwpj@163.com
  • About author:Chen Wei-ru★, Studying for master’s degree, Department of Orthodontics, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang Province, China 315002872@qq.com

Abstract:

BACKGROUND: In the treatment of teeth later fixed appliance, whether the expansion effect can be maintained? Whether the expansion in the process of mandibular rotation could be improved? Whether the high angle cases are suitable for rapid palatal expansion?
OBJECTIVE: To sum the effect of rapid maxillary expansion combined with fixed orthodontic technique on the occlusion craniofacial three-dimensional direction, hard and soft tissues and temporomandibular joint, as well as its long-term stability.
METHODS: The CNKI database, PubMed database and Wanfang database were searched for the academic journals and literatures on rapid maxillary expansion combined with fixed appliance with the key words of “maxillary expansion, fixed appliance, high angle, stable”. The analysis function of database was used.
RESULTS AND CONCLUSION: Rapid maxillary expansion can effectively obtain arch expansion, increase the arch width, and provide space of align teeth required. Fixed appliance can effectively control the tooth movement in three-dimensional space, precisely adjust the teeth, and make the tooth rows into the ideal arch form. Combination of these two kinds of appliances can obtain the complementary efficiency advantages of the appliances, and shorten the treatment course. Expansion can cause mandibular clockwise rotation and mandibular plane angle increasing, while with the application of upper and lower fixed appliance, the occluding relation between maxilla and mandible can be adjusted more precisely in order to make the mandibular first molar move to the maxillary molar buccal, establish good occlusal relationship, so that decrease the mandibular plane angle. So the rapid maxillary expansion combined with fixed orthodontic can be used appropriately in the treatment of the patients with high angle intraversion.

Key words: mouth, orthodontic appliances, orthodontic extrusion, mandible, dental arch, bite force

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