Intraoral Molar Distalization with Intraosseous Mini Screw.

The aim of the present study was to evaluate the effects of the miniscrew-supported, modified Hyrax appliance on bilateral distalization of posterior teeth. A 15-year-old girl with Class II malocclusion (end-to-end molar relationships, space deficiency for maxillary canine) underwent orthodontic treatment. The patient rejected tooth extraction. Then, she was treated with the miniscrew-supported, modified Hyrax appliance. An activation of 1 mm per month was planned. Lateral cephalometric views were used to evaluate distal movement. Distalization was successfully achieved at 4 months. No anchorage loss and incisor protrusion were noted. It would be beneficial to choose this appliance for the distalization of maxillary molars in patients with maxillary incisor protrusion, as this appliance does not cause anchorage loss in the upper jaw.

[1]  R. Sabri.  Treatment of a severe arch-length deficiency with anteroposterior and transverse expansion: long-term stability. , 2010, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[2]  M. Papadopoulos.  Orthodontic treatment of Class II malocclusion with miniscrew implants. , 2008, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[3]  L. Franchi,et al.  Dentoskeletal effects induced by rapid molar distalization with the first class appliance. , 2004, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[4]  R. Haas,et al.  Alternative to the median region of the palate for placement of an orthodontic implant. , 2000, Clinical oral implants research.

[5]  A. J. Haas.  Headgear therapy: The most efficient way to distalize molars , 2000 .

[6]  H. Wehrbein,et al.  Palatal bone support for orthodontic implant anchorage--a clinical and radiological study. , 1999, European journal of orthodontics.

[7]  R. Nanda,et al.  Evaluation of an intraoral maxillary molar distalization technique. , 1996, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[8]  R. D. Mitchell,et al.  Molar and incisor changes with Wilson rapid molar distalization. , 1993, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[9]  A. Gianelly,et al.  Molar distalization with superelastic NiTi wire. , 1992, Journal of clinical orthodontics : JCO.

[10]  J. Hilgers.  The pendulum appliance for Class II non-compliance therapy. , 1992, Journal of clinical orthodontics : JCO.

[11]  R K Gongloff,et al.  Rigid endosseous implants for orthodontic and orthopedic anchorage. , 1989, The Angle orthodontist.