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Mandibular incisor ...
Mandibular incisor alignment in untreated subjects compared with long-term changes after orthodontic treatment with or without retainers
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- Schütz-Fransson, Ulrike (author)
- Malmö universitet,Odontologiska fakulteten (OD),County Orthodontic Clinic Uddevalla, Västra Götalands Regionen, Uddevalla, Sweden
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- Lindsten, Rune (author)
- Department of Orthodontics, Institute for Postgraduate Dental Education, Jönköping, Sweden
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- Bjerklin, Krister (author)
- Malmö universitet,Odontologiska fakulteten (OD)
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- Bondemark, Lars (author)
- Malmö universitet,Odontologiska fakulteten (OD)
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(creator_code:org_t)
- Elsevier, 2019
- 2019
- English.
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier. - 0889-5406 .- 1097-6752. ; 155:2, s. 234-242
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Introduction: The aim of this work was to analyze the dental and skeletal changes in patients treated with fixedorthodontic appliances with or without retention appliances, and to compare the changes with untreated sub- jects. Specifically, mandibular incisor irregularity was analyzed. Methods: A total of 105 children who had undergone orthodontic treatment with fixed appliances in both jaws were examined in 2 groups: 64 had a lingual mandibular retainer and 41 had no retainer. Retention time was 2.7 +/- 1.5 years. The untreated group consisted of 25 subjects. Measurements were done on study casts and lateral head radiographs before and after treatment and 6 and 12 years after treatment. The Little irregularity index (LII) was the most important variable. Results: No differences were found in LII 12 years after treatment between the group that had a retainer and the group without a retainer after treatment. In the untreated group, LII was increased over time, but not to the same extent as in the treated groups. Correction of overjet and overbite was stable long-term. At the last examination, the amount of overjet was almost the same in all 3 groups. Conclusions: The routine use of mandibular retainers for 2 to 3 years does not appear to prevent long-term relapse. If the patient wants to constrain natural development and changes, lifelong retainers are needed.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Odontologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dentistry (hsv//eng)
Keyword
- Dentistry
- Oral Surgery & Medicine
Publication and Content Type
- ref (subject category)
- art (subject category)
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