The influence of 3x3 bonded retainer on anterior crowding relapse in mandibular incisor extraction cases

To evaluate the 3x3 bonded retainer influence on the mandibular anterior crowding in cases treated with mandibular incisor extraction. The sample comprised pretreatment, posttreatment and follow-up orthodontic records of 16 subjects (10 females and 6 males) with Class I malocclusion treated with ext...

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Bibliographic Details
Published in:Dental press journal of orthodontics 2021, Vol.26 (6), p.e212081-e212081
Main Authors: Berbert, Marcelo, Cotrin, Paula, Oliveira, Renata Cristina Gobbi de, Oliveira, Ricardo Gobbi de, Valarelli, Fabricio Pinelli, Freitas, Marcos Roberto de, Freitas, Karina Maria Salvatore
Format: Article
Language:English
Subjects:
Adolescent
Adult
DENTISTRY, ORAL SURGERY & MEDICINE
Female
Follow-Up Studies
Humans
Incisor
Male
Malocclusion
Mandible - surgery
Original
Orthodontic Appliances, Fixed
Orthodontic Retainers
Recurrence
Relapse
Stability
Tooth extraction
Young Adult
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Summary:To evaluate the 3x3 bonded retainer influence on the mandibular anterior crowding in cases treated with mandibular incisor extraction. The sample comprised pretreatment, posttreatment and follow-up orthodontic records of 16 subjects (10 females and 6 males) with Class I malocclusion treated with extraction of a single mandibular incisor. The mean ages (± SD) at pretreatment, posttreatment and follow-up evaluation were 23.45 ± 9.14 years, 25.50 ± 8.95 years and 30.11 ± 8.59 years, respectively. The mean (± SD) treatment time and posttreatment evaluation time were 2.05 ± 0.45 years and 4.60 ± 1.85 years , respectively. Little irregularity index and interdental widths were evaluated using dental casts. The sample was divided into two subgroups, according to the presence of the 3x3 bonded retainer at follow-up. The subgroup without 3x3 bonded retainer presented a greater relapse at the follow-up, when compared to 3x3 bonded retainer subgroup. There was a significant relapse in cases treated with mandibular incisor extraction at follow-up. The subgroup without 3x3 bonded retainer showed a significant relapse at the follow-up when compared to the retainer group.
ISSN:2176-9451
2177-6709
2177-6709
DOI:10.1590/2177-6709.26.6.e212081.oar