Extraoral vs intraoral appliance for distal movement of maxillary first molars: a randomized controlled trial

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Bondemark, LarsMalmö högskola,Odontologiska fakulteten (OD) (author)

Extraoral vs intraoral appliance for distal movement of maxillary first molars : a randomized controlled trial

Article/chapterEnglish2005

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Angle Society,2005
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LIBRIS-ID:oai:DiVA.org:mau-15417
https://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-15417URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:vet swepub-contenttype
Subject category:art swepub-publicationtype

Notes

Using randomized controlled trial methodology, the aim of this study was to evaluate and compare the treatment effects of an extraoral appliance (EOA) and an intraoral appliance (IOA) for distal movement of maxillary first molars. A total of 40 patients (mean 11.5 years, SD 1.29) at the Orthodontic Clinic, National Health Service, Skane County Council, Malmö, Sweden, were randomized to receive treatment with either extraoral traction (cervical headgear) or an IOA us-ing superelastic coils for distal movement of maxillary first molars. The inclusion criteria were a nonextraction treatment plan, a Class II molar relationship and maxillary first molars in occlusion with no erupted maxillary second molars. The outcome measures to be assessed in the trial were treatment time, cephalometric analysis of distal molar movement, anterior movement of maxillary central incisors, ie, anchorage loss and sagittal and vertical skeletal positional changes of the maxilla and mandible. In the IOA group, the molars were distalized during an average time of 5.2 months, whereas in the EOA group the corresponding time was 6.4 months (P < .01). The mean amount of distal molar movement was significantly higher in the IOA than in the EOA group, three mm vs 1.7 mm (P < .001). Moderate anchorage loss was produced with the IOA implying increased overjet (0.9 mm) whereas the EOA created decreased overjet (0.9 mm). It can be concluded that the IOA was more effective than the EOA to create distal movement of the maxillary first molars.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Odontologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Dentistry hsv//eng

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Karlsson, IngelaOrthodontic Clinic, National Health Service, Skane County Council, Malmö, Sweden (author)
Malmö högskolaOdontologiska fakulteten (OD) (creator_code:org_t)

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In:Angle orthodontist: Angle Society75:5, s. 699-7060003-32191945-7103

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By the author/editor: Bondemark, Lars; Karlsson, Ingela

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Dentistry

Articles in the publication: Angle orthodonti ...

By the university: Malmö University

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