Twelve-year follow-up of mandibular incisor stability: Comparison between two bonded lingual orthodontic retainers

Schütz-Fransson, UlrikeMalmö högskola,Odontologiska fakulteten (OD),County Orthodontic Clinic in Uddevalla, Västra Götaland, Sweden (författare)

Twelve-year follow-up of mandibular incisor stability : Comparison between two bonded lingual orthodontic retainers

Objective: To compare the long-term outcome 9 years after removal of two different types of fixed retainers used for stabilization of the mandibular anterior segment. Materials and Methods: Sixty-four children who had undergone orthodontic treatment with fixed appliances in both arches were divided into two groups depending on which kind of retainer being used. Twenty-eight of the patients had a canine-to-canine retainer bonded to the canines and 36 had a bonded twistflex retainer 3-3, bonded to each tooth. Measurements were made on study models and lateral head radiographs, before and after treatment, 6 years after treatment, and 12 years after treatment, with a mean of 9.2 years after removal of the retainers. Results: No significant differences were found between the two groups at the long-term follow-up according to Little's Irregularity Index or available space for the mandibular incisors. The overjet and overbite were reduced after treatment in both groups and stayed stable throughout the observation period. Also, no differences in bonding failures between the two retainers were found. Conclusions: Both a canine-to-canine retainer bonded only to the canines and a twistflex retainer 3-3 bonded to each tooth can be recommended. However, neither of the retention types prevented long-term changes of mandibular incisor irregularity or available space for the mandibular incisors after removal of the retainers.

Lindsten, RuneDepartment of Orthodontics, Institute for Postgraduate Dental Education, Jönköping, Sweden (författare)
Bjerklin, KristerMalmö högskola,Odontologiska fakulteten (OD)(Swepub:mau)odkrbj (författare)
Bondemark, LarsMalmö högskola,Odontologiska fakulteten (OD)(Swepub:mau)odlabo (författare)
Malmö högskolaOdontologiska fakulteten (OD) (creator_code:org_t)

Ingår i:Angle orthodontist: Angle Orthodontist87:2, s. 200-2080003-32191945-7103

Av författaren/redakt...: Schütz-Fransson, ...; Lindsten, Rune; Bjerklin, Kriste ...; Bondemark, Lars

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Odontologi

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.